Download or read book Photocatalytic Oxidation of Cytostatic Drugs Via Uv and Visible Light Responsive TiO2 in the Aqueous Environment written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photocatalytic Activity Enhancement of Titanium Dioxide Nanoparticles written by Mohamed A. Barakat and published by Springer. This book was released on 2015-10-26 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this brief, a comprehensive review of the UV/visible-TiO2 photocatalytic oxidation process is presented with an insight into the mechanisms involved, the role of titanium dioxide as a catalyst, irradiation sources, types of reactors, and a comparison between various modes of TiO2 application. An overview of the development and enhancement of the activity of TiO2 nanoparticles in photocatalysis is presented. The topics covered include a detailed look at the unique properties of the TiO2 nanoparticles and their relationship to photocatalytic properties. The utilization of the TiO2 nanoparticles as photocatalysts, in the non-doped and doped forms is also reviewed. Finally, the use of modified TiO2 nanoparticles has made a significant contribution in providing definitive mechanistic information regarding the visible light photocatalytic processes.
Download or read book TiO2 Photocatalysis written by Akira Fujishima and published by . This book was released on 1999 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adsorption and Photocatalytic Oxidation of Pharmaceuticals Using TiO2 Under UV and Visible Light Irradiation written by Ahmed Radhi Mkaouar and published by . This book was released on 2018 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the adsorption and the photocatalytic degradation of ibuprofen, carbamazepine, sulfamethoxazole, acetaminophen, atenolol and primidone was investigated under both UV and Visible Light irridiation using TiO2 as a catalyst. The interactions between the photocatalyst and pharmaceuticals were investigated based on their physico-chemical properties. The adsorption kinetic showed that ibuprofen exhibited the highest adsorption rate followed by sulfamethoxazole, carbamazepine, acetaminophen, atenolol and primidone resulting in the removal of 82%, 32%, 31%, 20%, 20%, and 16% respectively after 120 min adsorption. The photocatalytic activity was measured under high-pressure UV and visible light illumination without and with catalyst. The results imply that pharmaceutical compounds can absorb UV and visible light with better degradation in the presence of TiO2. Ibuprofen and carbamazepine degradation did not change with light sources, however, UV photo-catalysis was higher than visible light especially for atenolol, acetaminophen and primidone (79% acetaminophen, 61% atenolol, and 36% primidone compared to 58%, 39% and 33% for acetaminophen, atenolol and primidone respectively). Sulfamethoxazole removal on the other hand increased from 66% to 100%. These changes can be explained by the pharmaceuticals'' adsorption capacity under different wavelengths. Both UV and visible light photo-oxidation reactions fitted the Langmuir-Hinshelwood pseudo-first-order kinetics model. The highest photodegradation rate was for ibuprofen (8.443 min−1 UV light and 0.033 min−1 visible light) and the lowest was shown by primidone (0.217 min−1 UV light and 0.0029 min−1 visible light).
Download or read book Understanding and Modifying TiO 2 for Aqueous Organic Photodegradation written by and published by . This book was released on 2005 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photocatalysis with semiconductor has recently emerged as an advanced oxidation process for environmental decontamination. It is safe and versatile, and consumes only light. It is very promising for solving the environmental problems in the most economic way. TiO2 of anatase phase has proven to be the most promising semiconductor photocatalyst for widespread environmental applications because it shows a high reactivity under ultraviolet (UV) light and it is nontoxic, stable and inert chemically. However, anatase TiO2 has a band gap of 3.2eV. This limits its application under sunlight as well as providing its high reactivity because the light with the energy larger than 3.2eV (corresponding to a wavelength of 387nm) constitutes only 3︢︣4% of the energy of solar light reaching the earth. TiO2 of rutile phase is claimed as catalytically inactive or much less active for organic compound photodegradation although it has a smaller band gap (3.0eV) corresponding to a wavelength of 413nm. Therefore, modifications of TiO2 are needed to allow TiO2 to efficiently utilize the solar spectrum. The present dissertation aims at developments of the photocatalysts which can work under visible light. One method used in the study was modification of rutile TiO2 by surface platinization. The experimental results indicate that Pt can act as a bridge for electrons created in rutile TiO2 to transfer to O2, which enables rutile TiO2's photoactivity under visible light. Roles of Pt deposited on anatase and anatase-rutile TiO2 for aqueous organic photooxidation were also investigated experimentally and theoretically. The other method used was modification of TiO2 with transition metal ions. MCM-41, a kind of mesoporous material, was used as a host for incorporation of transition metal ions (Cr, V, Fe, Cu, Mn, Co, Ni, Mo and La) and TiO2 loading. Only Cr6+ was found to be able to sensitize TiO2 for organic degradatoin under visible light. Two other mesoporous materials (MCM-48, and SBA-15) with different pore sizes and dimensionalities were also studied as supports for Cr6+ and TiO2. MCM-41 was found to be the best for visible light photocatalyst development. Cr6+ concentration in TiO2-loaded Cr-incorporated MCM-41 was parametrically investigated and the optimal atomic ratio of Si to Cr was 20. The catalyst deactivates with reation time; the deactivated catalyst can be 100% reactivated by recalcination under 450 C. Cr leaching is minimal when the catalyst deactivates completely after reaction. What is more, the synergistic effect between anatase and rutile titanias named in the literature was investigated with different kinds of titanias. A technique was discovered for removal of organics containing acid and/or phenolic groups under visible light by using commercial pristine TiO2. Conclusively, it has been shown that visible light utilization for aqueous organic oxidation can be achieved by modification of TiO2 with surface platinization or Cr6+ incorporation.
Download or read book Advances in Photocatalytic Disinfection written by Taicheng An and published by Springer. This book was released on 2016-11-21 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest results related to photocatalytic inactivation/killing of microorganisms, which is a promising alternative disinfection method that produces less or even no disinfection byproduct. The book is divided into 13 chapters, which introduce readers to the latest developments in the photocatalytic disinfection of microorganisms, examine essential photocatalytic (PC) and photoelectrocatalytic (PEC) disinfection studies, and forecast and make recommendations for the further development of PC and PEC disinfection. Bringing together contributions by various leading research groups worldwide, it offers a valuable resource for researchers and the industry alike, as well as the general public. Taicheng An, PhD, is Chair Professor and Director at the Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, China. Huijun Zhao, PhD, is Chair Professor and Director at the Centre for Clean Environment and Energy & Griffith School of Environment, Griffith University, Australia. Po Keung Wong, PhD, is a Professor at the School of Life Sciences, the Chinese University of Hong Kong, Hong Kong SAR, China.
Download or read book Targeting the Elimination of Anti cancer Drugs from Wastewaters Via Some Advanced Oxidation and Membrane Processes written by Raphaël Janssens and published by Presses universitaires de Louvain. This book was released on 2019-11-20 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The detection of anti-cancer drugs in surface water bodies around the globe calls for upgrading currently applied wastewater treatment plants. Therefore one of the main objectives of this PhD thesis was to investigate advanced oxidation processes able to avoid such pollution. In addition of developing technological solutions, characterization of pollution sources was performed in this work. Results evidenced the presence of cytostatic drugs in hospital wastewaters, even though a major part of drug is administrated to patients in the ambulatory regime in Belgium (94%-w). In this work, two advanced oxidation process were investigated: photocatalytic membrane reactor (PMR) and photochemical oxidation (UV/H2O2). First PMR tests evidenced that catalyst particles were effectively confined in the system when using a ceramic ultrafiltration module at a transmembrane pressure of 3 bar and cross flow velocity of 3 m/s. Further photocatalytic tests showed that secondary wastewater effluent hindered the formation of OH radicals responsible for pollutants degradation. A successive filtration method of the investigated matrix highlighted that ionic species hindered more the removal rates than the natural organic matter. When comparing PMR and UV/H2O2 processes with an economic and life cycle analysis, the UV/H2O2 process scored best. However, the formation of toxic by-products was observed during the reaction of OH radicals with compounds present in the real water matrices investigated. Therefore UV/H2O2 stands as a promising technology for advanced water treatment, but still requires further studies to be implemented at large scale.
Download or read book Clean by Light Irradiation written by Vincenzo Augugliaro and published by Royal Society of Chemistry. This book was released on 2010 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with the environmentally friendly cleaning materials functionalized with TiO2, a widely known semiconductor giving rise to redox reactions under artificial or solar irradiation. The role of titanium dioxide in the worldwide community is introduced first. The fundamental working principles of heterogeneous photocatalysis follow and a critical section on the semiconductor bulk and surface properties open the way to the differences between TiO2 blend features with respect to analogous thin film layouts. Then Follows the main section of the book which deals with the techniques applied to manufactured commercial devices, ranging from glasses to textiles and from concrete and other construction materials to paintings. Also road asphalt and other devices, such as photocatalytic air conditioning machines are outlined. Last generation materials, not yet commercialized, and the deposition techniques applied to prepare them are also widely discussed. The final part of the book covers the difficult and modern topic of standardization and comparison of performance of photocatalytic processes and in particular the guidelines proposed by various worldwide organizations for standardization are discussed. The book covers the general matters as well as the practical applications with the supporting methods discussed in detail. This book brings together a team of highly experienced and well-published experts in the field, providing a comprehensive view of the applications of supported titanium dioxide.
Download or read book Design and Development of a New Generation of UV visible light driven Nanosized Codoped Titanium Dioxide Photocatalysts and Biocides sporocides and Environmental Applications written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: For solar environmental remediation, a new generation of nanosized (10 nm) titanium dioxide photocatalysts codoped with metals and nonmetals, or metals only were prepared by the xero-gel and aero-gel methods. For silver or cobalt-based xero-gel titanium dioxide photocatalysts, photoactivities tests revealed that codoping of titanium dioxide with a metal (1% Ag or 2% Co) and nonmetals (carbon and sulfur) is necessary to achieve high-activities for acetaldehyde degradation under visible light (wavelength 420 nm). It was concluded that high visible-light-activities for acetaldehyde degradation over codoped titanium dioxide were attributed to an interplay of anatase crystallinity, high-surface area, reduced band-gap (3.0 eV), uniform dispersion of doped metal ions, and suppressed recombination rate of photogenerated electron-hole pairs. Moreover, the nature and amount of codoped metals play a significant role in visible-light-induced photocatalysis. Metals (Al, Ga, and In) doped/codoped titanium dioxide photocatalysts were prepared by the aero-gel method. The photocatalytic studies showed that activities of metal doped/codoped photocatalysts under UV light (wavelength 400 nm) were found to be dependent on pollutants. Indium demonstrated beneficial effects in both textural and photocatalytic properties. Gallium and indium codoped titanium dioxide photocatalysts displayed even better performance in the CO oxidation reaction under UV light. Notably, titanium dioxide codoped with Ga, In, and Pt, exhibited unique photoactivities for the CO oxidation under both UV and visible light irradiation, indicating that this system could have promise for the water-gas shift reaction for hydrogen production. Silver-based nanostructured titanium dioxide samples were developed for killing human pathogens (Escherichia coli cells and Bacillus subtilis spores). Biocidal tests revealed that silver, carbon, and sulfur codoped titanium dioxide nanoparticles (
Download or read book Development of Novel Visible and Solar Light activated Nanostructured Nitrogen fluorine Titanium Dioxide Photocatalyst for the Removal of Cyanotoxins in Water written by Miguel Pelaez and published by . This book was released on 2012 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prevalent and increasing occurrence of cyanobacteria and their toxins, known as cyanotoxins, in drinking water sources have become a potential health risk to humans. Physical treatment methods in conventional drinking water treatment have the capacity to remove cyanotoxins but are limited to a merely physical separation, where further treatment is required. Cyanotoxins are susceptible to chemical oxidation and recently advanced oxidation technologies (AOTs) and nanotechnologies (AONs), such as titanium dioxide (TiO2) photocatalysis, have been proven an effective alternative technology to chemically transform cyanotoxins in water. However, conventional TiO2 is restricted to UV light photoactivation for the generation of highly reactive oxygen species (i.e., hydroxyl radicals) representing an economical and technological limitation for the use of renewable energy sources such as solar light, since UV radiation accounts only for 5% of the total solar spectrum compared to the visible spectrum (~45%). This dissertation explored the development of nanostructured nitrogen and fluorine co-doped TiO2 (NF-TiO2) that can be activated under visible and solar light for the photocatalytic degradation of cyanotoxins in water. This work aimed to develop highly efficient NF-TiO2 nanoparticles and films to evaluate the environmental fate of microcystins, the most widespread and highly persistent group of cyanotoxins found in surface waters, and cylindrospermopsin which has emerged as the most significant toxin in freshwater sources. Specific attention was given to 1) the fundamental aspects on the synthesis method that influenced the physicochemical properties of NF-TiO2, such as the incorporation of nitrogen and fluorine in the structure of TiO2 and the synergistic effects induced by both dopants, 2) the surface interaction between the cyanotoxins and NF-TiO2 in different water matrix, 3) the reactivity and degradation kinetics of microcystins and cylindrospermopsin with NF-TiO2 and 4) the mechanism of radical formation with NF-TiO2 under visible and solar light. The existence of interstitial nitrogen and substitutional fluorine in the NF-TiO2 lattice was determined and the formation of localized intra-gap states was established implying that fluorine promotes nitrogen incorporation in TiO2. A shift in the absorbance capacity of NF-TiO2 in the visible range was also observed. Anatase/brookite heterojunctions, which promote photocatalytic efficiency, were found in NF-TiO2. High initial degradation rates for microcystin-LR (MC-LR) were obtained with NF-TiO2 nanoparticles and films in synthetic water under visible light. The effect of pH indicated that attractive forces at acidic conditions between the oppositely charged NF-TiO2 and MC-LR contributed to higher MC-LR initial degradation rates. The presence of alkalinity and natural organic matter had a scavenging effect since the initial MC-LR degradation rates decreased. Modifications to NF-TiO2 with Evonik Aeroxide P25-TiO2 (P25) nanoparticles lead to composite NF-TiO2-P25 with improved photocatalytic activity towards MC-LR, MC-RR, MC-YR, MC-LA and cylindrospermopsin under visible and UV-vis light. The general reactivity was MC-LA>MC-LR>MC-YR>MC-RR. Finally, results using selected scavengers indicate that the main mechanism of NF-TiO2 radical formation under visible light irradiation differed from UV-mediated TiO2 photocatalysis since no evidence of hydroxyl radical production from the surface holes was observed. It was suggested that under visible light, surface oxygen reduction of NF-TiO2 occurred to form superoxide radical anion as main radical specie. The affinity of the scavenger with NF-TiO2 and MC-LR in terms of pH was established as an important parameter to determine the radicals formed in this study.
Download or read book Photocatalytic Purification and Treatment of Water and Air written by David F. Ollis and published by Elsevier Publishing Company. This book was released on 1993 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises the results of the first international conference examining the promise of the emerging area of photochemistry. It includes coverage of such areas as: comparison with other competitive technologies; and transfer of research results into development and application activities.
Download or read book Photocatalytic Oxidation of Air Toxics Via Visible Light Irradiation and Nano photocatalysts written by Ruh Ullah and published by . This book was released on 2012 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores synthesis of various types of metal oxide nanoparticles through a wet-chemical synthesis route. The materials were used for photocatalytic oxidation of gaseous toluene irradiated with UV, artificial solar light, and pure visible light. Tantalum based compounds like BiTaO4: La, BiNbO4: Ga and Ta2O5 have shown better performance than a commercial TiO2 under UV and solar light. Ta2O5 and nitrogen doped Ta2O5 have shown excellent performance for toluene oxidation with solar and visible light.
Download or read book Heterogeneous Photocatalytic Degradation of Organic Pollutants in Water Over Nanoscale Powdered Titanium Dioxide written by Khaled M. Mezughi and published by . This book was released on 2011 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic contaminants from industrial and/or domestic effluents may be harmful to humans directly or indirectly by degrading the quality of the aquatic environment. Consequently these contaminants must be reduced to levels that are not harmful to humans and the environment before disposal. Chemical, physical and biological methods exist for the removal of these pollutants from effluents. Among the available chemical methods, heterogeneous photocatalytic oxidation has been found particularly effective in removing a large number of persistent organics in water. In this study, photocatalytic degradation was explored for the removal of reactive azo-dye (textile dye), triclocarban (disinfectant), clopyralid (herbicide) and three endocrine disrupting compounds (EDCs) (estrone, 17?-estradiol and 17?-ethinylestradiol) from synthetic effluents. The major factors affecting the photocatalytic processes including the initial concentration of the target compounds, the amount of catalyst, the light intensity, the type of catalyst, the electron acceptor, the irradiation time and the pH were studied. Other oxidation techniques including (O3, H2O2, UV) were also studied. Generally UV light is used in combination with titanium dioxide, as photocatalyst, to generate photoinduced charge separation leading to the creation of electron-hole pairs. The holes act as electron acceptors hence the oxidation of organics occur at these sites. These holes can also lead to the formation of hydroxyl radicals which are also effective oxidants capable of degrading the organics. The results obtained in this study indicated that photolysis (i.e. UV only) was found to have no effect on the degradation of reactive azo-dye (RO16). However, complete photocatalytic degradation of 20 mg/L (3.24?10-2 mM) RO16 was achieved in 20 minutes in the presence of 1g/L TiO2 Degussa P25 at pH 5.5. Comparison between various types of catalysts (i.e. Degussa P25, VP Aeroperl, Hombifine N) gave varied results but Degussa P25 was the most effective photocatalyst hence it was selected for this study. For RO16 the optimum catalyst concentration was 0.5 g/L TiO2 with initial concentration of 20 mg/L RO16. It was found that the disappearance of RO16 satisfactorily followed the pseudo first-order kinetics according to Langmuir-Hinshelwood (L-H) model. The rate constant was k= 0.0928 mol/min. Photodegradation of TCC was studied in 70%v acetonitrile: 30%v water solutions. UV light degraded TCC effectively and the reaction rates increased with decreasing initial concentration of TCC. UV/TiO2 gave unsatisfactory degradation of triclocarban (TCC) since only 36% were removed in 60 minutes with initial concentration of TCC 20 mg/L. The degradation of clopyralid and the EDCs was studied using three oxidation systems UV/TiO2, UV/H2O2 and O3. Complete degradation of clopyralid (3,6-DCP) was achieved with UV/TiO2 in about 90 minutes at an optimum catalyst concentration of 1g/L. Zero-order kinetics was found to describe the first stage of the photocatalytic reaction in the concentration range 0.078-0.521 mM. At pH 5 the rate constant was 2.09?10-6? 4.32?10-7 M.s-1.Complete degradation of all the three EDCs was achieved with UV/H2O2 in 60 minutes at catalyst concentration of (2.94?10-2 M). On the other hand complete degradation of the EDCs was achieved in just 2 minutes with ozonation. For high concentration EDCs, TiO2/UV gave low efficiency of degradation as compared with ozone and H2O2/UV. First-order kinetics was found to describe the photocatalytic reaction of the EDCs.
Download or read book Improving the Optoelectronic Property and Photoactivity of Nano structured Titanuim Dioxide written by Hong-Ying Lin and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium dioxide (TiO 2) has been proven to be one of the most important and widely used photocatalyst for applications such as gas/liquid phase environmental cleaning, solar hydrogen generation, sensitized solar cell, UV filtration, etc. The biggest challenge in the applications of this semiconductor photocatalyst is its large band gap (~ 3.2 eV) which limits the utilizable spectrum of photons from the solar light (~ 4 to 5 %). To improve the optical sensitivity of TiO 2 in the visible light region, the band gap of TiO 2 needs to be tailored. The reduction of TiO 2 band gap can be achieved by controlling of its electronic structure via two routes: changing the particle size and doping it with impurities. To precisely control the size of TiO 2 particles, anatase TiO 2 nanocrystallines (17 to 29 nm) were synthesized by metallo-organic chemical vapor deposition (MOCVD) method with moderate control on system parameters (i.e. pressure and gas flow rates). The results of band gap change as a function of particle size agreed well with what was predicted using the Brus' effective mass model (EMM). However, the observations from photocatalytic oxidation of 2-chlorophenol (2-CP) showed that the smaller the particle size, the faster the degradation rate. This is attributed in part to the combined effect of band gap change relative to the spectrum of the light source and the specific surface area (or particle size) of the photocatalysts. Our results indicate that the gain in specific surface area due to the smaller particle size outweighs the improvement on its optical property (e.g. reduction in bandgap) under similar experimental condition. Our observation also showed the secondary particle size to be time dependent due to the aggregation and is highly correlated with its primary particle size. The nitrogen doped TiO 2 thin film synthesis was carried out with two different approaches: (1) oxidation of the titanium nitride (TiN) thin film and (2) reactive pulsed laser deposition (PLD). Nitrogen doping of TiO 2 in the former approach was done by the oxidation of TiN thin films at 800 ̊C in ambient air. The phase transformation of TiN to TiO 2 appears to be a function of annealing time. The X-ray photoelectron spectroscopy (XPS) studies have shown that the substitutionally doped TiO 2-x N x (N 1 s ~ 396 eV) remains stable only for the first two minutes of annealing. As the annealing proceeds, the N 1s XPS peak shifts to higher binding energy (N1 s ~ 400 and 402 eV) which indicates that binding energy of N atom shifted from substitutional site (Ti-N) to chemisorbed site (N=-N) when annealing process exceeds five minutes due to the substitution of Ti-N bond by Ti-O bond. Results from both depth profile XPS and cross-section TEM showed that the formation of TiO 2-x N x depends on the distance from the film surface. Film structure studied by X-ray diffraction (XRD) showed that mixed TiN and rutile TiO 2 phases formed between four and twenty four hours of annealing time. The optical properties were examined using UV-VIS spectroscopy. The most visible light sensitive samples showed ~65 to 105 nm red-shift on its absorption edges from that of pure TiO 2, which is equivalent to ~0.47 to 0.73 eV reduction in the effective bandgap. Our results suggest that surface oxidation of TiN is an effective method for the synthesis of band gap tailored oxides which have applications in photocatalysis, photovoltaic, etc. Doping of N into TiO 2 lattice was also achieved using the reactive pulsed laser deposition technique. The N concentration was controlled by adjusting the mixing ratio of make-up (N 2) and buffer (1:1 O 2 and Ar mixture) gases during laser ablation. (Abstract shortened by UMI.).
Download or read book Photocatalytic Semiconductors written by Aracely Hernández-Ramírez and published by Springer. This book was released on 2014-11-17 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This critical volume examines the different methods used for the synthesis of a great number of photocatalysts, including TiO2, ZnO and other modified semiconductors, as well as characterization techniques used for determining the optical, structural and morphological properties of the semiconducting materials. Additionally, the authors discuss photoelectrochemical methods for determining the light activity of the photocatalytic semiconductors by means of measurement of properties such as band gap energy, flat band potential and kinetics of hole and electron transfer. Photocatalytic Semiconductors: Synthesis, Characterization and Environmental Applications provide an overview of the semiconductor materials from first- to third-generation photocatalysts and their applications in wastewater treatment and water disinfection. The book further presents economic and toxicological aspects in the production and application of photocatalytic materials.
Download or read book Photocatalytic Oxidation of Organic Compounds Via Waveguide supported Titanium Dioxide Films written by Lawrence W. Miller (Jr.) and published by . This book was released on 1998 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Visible Light Photocatalytic Remediation of Organics in Water Using Zinc Oxide and Titanium Oxide Nanostructures written by Srikanth Gunti and published by . This book was released on 2017 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The petroleum compounds were photocatalytically remediated from water using G- TiO2 nanoparticles material in visible light radiation. The G-TiO2 nanoparticle was synthesized using sol-gel technique and used on various petroleum-based chemicals (toluene, naphthalene and diesel) were remediated, and samples were analysed using optical and gas chromatography (GC) techniques. The importance of pollutant to come in contact with photocatalyst have been demonstrated by employing surfactant along with G-TiO2 nanoparticles to remediate naphthalene.
