Download or read book Metal Oxide Hierarchical Porous Silica Nanocomposites Prepared by Nanoemulsion Templating and Integrative Synthesis written by Manal Amin Abdel-Mogoud Hessien and published by . This book was released on 2012 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoemulsions are templates that have the potential to fill the gap between micellar systems and latex particles in the preparation of porous materials. A nanoemulsion can also be used as a carrier for uploading the desired materials inside the pore formed after the removal of the template. In this research, oil-in-water (O/W) nanoemulsions were prepared by means of a low-energy method based on a phase inversion composition (PIC) technique, using two nonionic surfactants (Tween 80 and Span 80), which can be mixed in order to adjust the hydrophilic-lipophilic balance (HLB). The influence of a number of parameters on the tunability and stability of such nanoemulsions was also studied. The effect of the simultaneous intercrossing of multifactors on droplet size was explored using a process- mixture design, and the size of the nanoemulsion oil droplets was measured by means of dynamic light scattering (DLS). The nanoemulsions were combined with sol-gel method in order to prepare porous silica with a macroporosity in the 50 nm to 400 nm range. The results demonstrate that a precise synergy between the silica source and the nanoemulsions is essential for effective interactions and homogeneous structures. Depending on the nature of such interactions, a variety of materials were observed, from hollow particles to continuous gels. Changing the size of the oil droplet and the volume of the nanoemulsions produced silica with differing pore sizes and varying total pore volumes. The obtained hierarchical porous silica (HPS) were characterized using mercury porosimetry, small angle X-ray scattering (SAXS), nitrogen isotherms, Fourier transform infrared (FTIR) analysis, transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The parallel use of the oil vesicles as containers for the further synthesis of metal oxide is a novel method of internally functionalizing the silica. When hydrophobic metal precursors are dissolved into the oil phase before the preparation of the nanoemulsion, they are confined within the globular cavities of the silica. The thermal treatment applied to the material to burn the organics then leads to the final formation of metal oxide nanoparticles, which are larger than the porosity of the silica matrix but entrapped within the large cavities, producing a "rattle-like" structure. This method was demonstrated through the synthesis of Fe2O3, Fe3O4, and Co3O4 nanoparticles, and the results showed that a rather large amount of metal oxide (up to a 60 wt.% of metal oxide in nanocomposites) be generated while still maintaining the nanometric size observed at lower concentrations. This method allows control of the type of metal oxide, the concentration of the metal oxide, and the pore size, which enables the creation of different types of nanocomposites. Metal oxide hierarchical porous silica (MHPS) nanocomposites were characterized based on nitrogen isotherms, TEM and SEM observations, FTIR analysis, X-ray diffraction (XRD), and Mossbauer spectroscopy. Magnetic measurements were also taken. This new method, using the new templating objects, is a perfect illustration of the concept of "integrative synthesis,” whereby the combination of building units and reactional mechanisms leads to complex structures as a result of true synergy among the elements during the reaction. In this case, the size of the nanoemulsion and the total water volume both contribute to the generation of distinctive architectures. In addition, the reaction of the metal oxide precursors within the cavities limits the extension of the final crystal size, but the surrounding solid matrix plays a role as well by keeping the particles apart. The final factor is that the reactive materials cannot leak from the silica because of the rattle-like structure, but the reagents can reach those particles through the porosity of the silica framework.
Download or read book Metal Oxide Nanocomposites written by B. Raneesh and published by John Wiley & Sons. This book was released on 2021-02-17 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Oxide Nanocomposites: Synthesis and Applications summarizes many of the recent research accomplishments in the area of metal oxide-based nanocomposites. This book focussing on the following topics: Nanocomposites preparation and characterization of metal oxide nanocomposites; synthesis of core/shell metal oxide nanocomposites; multilayer thin films; sequential assembly of nanocomposite materials; semiconducting polymer metal oxide nanocomposites; graphene-based metal and metal oxide nanocomposites; carbon nanotube–metal–oxide nanocomposites; silicon mixed oxide nanocomposites; gas semiconducting sensors based on metal oxide nanocomposites; metal ]organic framework nanocomposite for hydrogen production and nanocomposites application towards photovoltaic and photocatalytic.
Download or read book Synthesis and Characterization of Ordered Mesoporous Inorganic Nanocomposite Materials written by Pasquale Fernando Fulvio and published by . This book was released on 2009 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ordered mesoporous inorganic nanocomposite materials were synthesized by using soft- and hard-templating strategies. Ordered mesoporous silicas (OMSs) were obtained by soft templating, whereas ordered mesoporous carbons (OMCs) and mesoporous mixed metal oxides were prepared by hard templating. Also, post-synthesis modification of OMSs was carried out by deposition of mixed metal oxides, carbon and nickel. The resulting materials were characterized by nitrogen and argon adsorption, thermogravimetric analysis, small angle X-ray scattering, powder X-ray diffraction, scanning and transmission electronic microscopy, elemental analysis, temperature programmed desorption and diffuse reflectance Fourier transform infrared spectroscopy. The first part of this dissertation is devoted to the optimization of experimental conditions such as time, temperature, pH and salt addition for the synthesis of several OMSs: SBA-15, SBA-16 and FDU-1. The size of ordered mesopores, surface area and pore volume of the aforementioned OMSs were tailored by adjusting the synthesis time and temperature as well as by combining solvent extraction and calcination for the template removal. A further improvement of SBA-16 and FDU-1 was achieved by using low acid concentration and adding NaCl addition, which resulted in OMSs with large cage diameters and uniform pore openings. Subsequently, the SBA-15 and SBA-16 materials were employed as hard templates for the synthesis of OMCs, using iron chloride as a catalyst for in situ polymerization of pyrrole. After carbonization and silica dissolution, the nitrogen-doped OMCs with tunable mesopores, graphitic domains and magnetic iron-iron carbide nanoparticles were obtained. Also, the pore walls of SBA-15 were modified with 2, 3-dihydroxy naphthalene, which was converted into thin carbon film. The impregnation of the resulting SBA-15-carbon nanocomposites with nickel salts afforded materials with "pea-pod" distribution of nickel nanoparticles. In addition, the pore walls of SBA-15 were modified with metal alkoxides of Al, Ti, and Zr by using a partially hydrolytic sol-gel process, which depending on the experimental conditions resulted in the deposition of thin films and nanoparticles of these oxides. Finally, OMCs were used as hard templates for the synthesis of mesoporous iron-doped alumina-titania mixed oxides, which exhibited high Lewis acidity and partially retained the structural symmetry of the templates used.
Download or read book Synthesis of Mesoporous Silica and Their Use as Templates for Metal and Metal Oxide Nanoparticles written by and published by . This book was released on 2011 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanotechnology in Diagnosis Treatment and Prophylaxis of Infectious Diseases written by Mahendra Rai and published by Academic Press. This book was released on 2015-05-23 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology in Diagnosis, Treatment and Prophylaxis of Infectious Diseases delivers comprehensive coverage of the application of nanotechnology to pressing problems in infectious disease. This text equips readers with cutting-edge knowledge of promising developments and future prospects in nanotechnology, paying special attention to microbes that are now resistant to conventional antibiotics, a concerning problem in modern medicine. Readers will find a thorough discussion of this new approach to infectious disease treatment, including the reasons nanotechnology presents a promising avenue for the diagnosis, treatment, and prophylaxis of infectious diseases. - Provides a comprehensive overview of the use of nanotechnology in the treatment and diagnosis of infectious diseases - Covers all common types of infective agents, including bacteria, viruses, fungi, and protozoa, along with their vectors, ticks, mosquitoes, flies, etc. - Delivers commentary from an international researcher base, providing insights across differing economic statuses - Includes a foundation of basic nanotechnological concepts to aid in designing new strategies to combat several pathogenic diseases and cancer - Illustrates the high antimicrobial potential of nanoparticles, ultimately demonstrating how they are a promising alternative class that can be successfully used in fighting a myriad of infections
Download or read book Carbons for Electrochemical Energy Storage and Conversion Systems written by Francois Beguin and published by CRC Press. This book was released on 2009-11-18 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: As carbons are widely used in energy storage and conversion systems, there is a rapidly growing need for an updated book that describes their physical, chemical, and electrochemical properties. Edited by those responsible for initiating the most progressive conference on Carbon for Energy Storage and Environment Protection (CESEP), this book undoub
Download or read book Advanced 3D Printed Systems and Nanosystems for Drug Delivery and Tissue Engineering written by Lisa C. du Toit and published by Elsevier. This book was released on 2020-03-08 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced 3D-Printed Systems and Nanosystems for Drug Delivery and Tissue Engineering explores the intricacies of nanostructures and 3D printed systems in terms of their design as drug delivery or tissue engineering devices, their further evaluations and diverse applications. The book highlights the most recent advances in both nanosystems and 3D-printed systems for both drug delivery and tissue engineering applications. It discusses the convergence of biofabrication with nanotechnology, constructing a directional customizable biomaterial arrangement for promoting tissue regeneration, combined with the potential for controlled bioactive delivery. These discussions provide a new viewpoint for both biomaterials scientists and pharmaceutical scientists. - Shows how nanotechnology and 3D printing are being used to create systems which are intelligent, biomimetic and customizable to the patient - Explores the current generation of nanostructured 3D printed medical devices - Assesses the major challenges of using 3D printed nanosystems for the manufacture of new pharmaceuticals
Download or read book Nanostructured Biomaterials written by Junbai Li and published by Springer Science & Business Media. This book was released on 2011-02-04 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials with designed biofunctions have brought about rapid and significant changes in materials science. "Nanostructured Biomaterials" provides up-to-date reviews of different methods for synthesizing new types of such materials and discusses their cutting-edge technological applications. The reviews mainly focus on potential applications of nanostructured materials in biology and the medical sciences. The book is of general interest to a broad audience of graduate students and researchers active in chemistry, materials science, engineering, biology, and physics. Dr. Junbai Li is a professor at the National Center for Nanoscience and Technology and the Institute of Chemistry, Chinese Academy of Sciences, China.
Download or read book Micro and Nanomanufacturing Volume II written by Mark J. Jackson and published by Springer. This book was released on 2017-10-28 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive treatment of micro and nanofabrication techniques, and applies established and research laboratory manufacturing techniques to a wide variety of materials. It is a companion volume to “Micro and Nanomanufacturing” (2007) and covers new topics such as aligned nanowire growth, molecular dynamics simulation of nanomaterials, atomic force microscopy for microbial cell surfaces, 3D printing of pharmaceuticals, microvascular coaptation methods, and more. The chapters also cover a wide variety of applications in areas such as surgery, auto components, living cell detection, dentistry, nanoparticles in medicine, and aerospace components. This is an ideal text for professionals working in the field, and for graduate students in micro and nanomanufacturing courses.
Download or read book Encapsulation of Active Molecules and Their Delivery System written by Shirish Sonawane and published by Elsevier. This book was released on 2020-03-24 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encapsulation of Active Molecules and Their Delivery System covers the key methods of preparation of encapsulation, as well as release mechanisms and their applications in food, biotechnology, metal protection, drug delivery, and micronutrients delivery in agriculture. The book also provides real-life examples of applications in food and other industries. Sections encompasses (i) Synthesis and characterization methods of micro- and nanocarriers as the delivery systems, (ii) Up-to-date encapsulation techniques in the areas of pharmaceuticals, nutraceuticals and corrosion, (iii) The release methods of the encapsulated materials, and (iv) Industry perspectives, including scale up of the processes. - Focuses on encapsulation processes in chemical and materials engineering and biotechnology - Provides a relevant resource for the pharmaceutical and food industries - Presents wide coverage on the entrapment of molecules that scales-up to industrial sized needs
Download or read book Sustainable Agrochemistry written by Sílvio Vaz Jr. and published by Springer. This book was released on 2019-05-28 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a broad range of technologies for sustainable agrochemistry, e.g. semiochemicals for pest management, nanotechnology for release of eco-friendly agrochemicals, and green chemistry principles for agriculture. It provides a concise introduction to sustainable agrochemistry for a professional audience, and highlights the main scientific and technological approaches that can be applied to modern agrochemistry. It also discusses various available technologies for reducing the negative impacts of agrochemicals on the environment and human health.
Download or read book Nanoengineering written by Patricia I. Dolez and published by Elsevier. This book was released on 2015-05-26 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoengineering: Global Approaches to Health and Safety Issues provides a global vision on the impact of engineered nanomaterials both for the consumer/general public and in occupational settings. The book also presents a hint on what can be expected for the future from nanomaterials and their effects on our lives, both at home and at work. In addition, users will find valuable information on nanomaterials' irreplaceable value and their risks for health, safety, and environmental issues. Case studies illustrate key points and provide information on important processes. - Provides a global vision on the different aspects related to nanosafety and a synthesis of the information available - Gives all the information required for precision decision-making in a single book, offering both general public and occupational aspects - Contains separate chapters on each subject written by world-renowned contributors - Presents a complete vision of the problem, with perspectives on global approaches - Includes case studies that illustrate important processes
Download or read book Environmental Biotechnology Volume 4 written by K. M. Gothandam and published by Springer Nature. This book was released on 2021-09-24 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the production of bioplastic from various raw materials and recycling wastewater into useful bioproducts by bacteria. In addition, it also addresses the recent advancement in pest control in rice plants, different methods to analyse genotoxicity on soil samples and the effect of phytocompounds on acrylamide-induced toxicity in Drosophilla. Interestingly, this book also discusses mesoporous silica nanoparticles' role as nanocarrier material for inhibiting the cancer cell, especially breast cancer and various biotechnological applications of marine fungal exopolysaccharides.
Download or read book Chemical Analysis of Food Techniques and Applications written by Yolanda Pico and published by Academic Press. This book was released on 2012-09-01 with total page 813 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Analysis of Food: Techniques and Applications reviews new technology and challenges in food analysis from multiple perspectives: a review of novel technologies being used in food analysis, an in-depth analysis of several specific approaches, and an examination of the most innovative applications and future trends. This book won a 2012 PROSE Award Honorable Mention in Chemistry and Physics from the Association of American Publishers. The book is structured in two parts: the first describes the role of the latest developments in analytical and bio-analytical techniques and the second reviews the most innovative applications and issues in food analysis. Each chapter is written by experts on the subject and is extensively referenced in order to serve as an effective resource for more detailed information. The techniques discussed range from the non-invasive and non-destructive, such as infrared spectroscopy and ultrasound, to emerging areas such as nanotechnology, biosensors and electronic noses and tongues. Important tools for problem-solving in chemical and biological analysis are discussed in detail. - Winner of a PROSE Award 2012, Book: Honorable Mention in Physical Sciences and Mathematics - Chemistry and Physics from the American Association of Publishers - Provides researchers with a single source for up-to-date information in food analysis - Single go-to reference for emerging techniques and technologies - Over 20 renowned international contributors - Broad coverage of many important techniques makes this reference useful for a range of food scientists
Download or read book Nanotheranostics written by Mahendra Rai and published by Springer Nature. This book was released on 2019-11-22 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is specifically designed to provide information about various nanocarriers currently developed under the emerging field of nanotheranostics for a sustained, controlled, and targeted co-delivery of diagnostic and therapeutic agents. Diverse theranostic applications of nanotechnology and their limitations are also addressed. It integrates nanobiotechnology with theranostic applications. The combined term nanotheranostics has diverse application particularly in chemotherapy and other infectious diseases.Among other topics addressed are antimicrobial resistance, targeting intra-cellular pathogens, viruses and bacteria, chemotherapy, cancer therapeutics, and inflammatory disorders. This interdisciplinary volume is essential for a diverse group of readers including nanotechnologists, microbiologists, biotechnologists, bioengineering and bioprocess industry.
Download or read book Nanobiotechnology Applications in Plant Protection written by Kamel A. Abd-Elsalam and published by Springer Nature. This book was released on 2019-10-04 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanobiotechnology Applications in Plant Protection: Volume 2 continues the important and timely discussion of nanotechnology applications in plant protection and pathology, filling a gap in the literature for nano applications in crop protection. Nanobiopesticides and nanobioformulations are examined in detail and presented as powerful alternatives for eco-friendly management of plant pathogens and nematodes. Leading scholars discuss the applications of nanobiomaterials as antimicrobials, plant growth enhancers and plant nutrition management, as well as nanodiagnostic tools in phytopathology and magnetic and supramagnetic nanostructure applications for plant protection. This second volume includes exciting new content on the roles of biologically synthesized nanoparticles in seed germination and zinc-based nanostructures in protecting against toxigenic fungi. Also included is new research in phytotoxicity, nano-scale fertilizers and nanomaterial applications in nematology and discussions on Botyris grey mold and nanobiocontrol. This book also explores the potential effects on the environment, ecosystems and consumers and addresses the implications of intellectual property for nanobiopesticides. Further discussed are nanotoxicity effects on the plant ecosystem and nano-applications for the detection, degradation and removal of pesticides.
Download or read book Nanozymology written by Xiyun Yan and published by Springer Nature. This book was released on 2020-01-30 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the new concept of “nanozyme”, which refers to nanomaterials with intrinsic enzymatic activity, rather than nanomaterials with biological enzymes incorporated on the surface. The book presents the cutting-edge advances in nanozyme, with emphasis on state-of-the-art applications in many important fields, such as in the biomedical fields and for environmental protection. The nanozyme is a totally new type of artificial enzyme and exhibits huge advantages over natural enzymes, including greater stability, low cost, versatility, simplicity, and suitability for industry. It is of interest to university researchers, R&D engineers, as well as graduate students in nanoscience and technology, and biology wishing to learn the core principles, methods, and the corresponding applications of “nanozyme”.
