Sol-gel Derived Silver Doped Nanocrystalline Titania Catalysed Photodegradation of Methylene Blue from Aqueous Solution PDF Download
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Author: Nur Amirah Azhar
Publisher:
ISBN:
Category : Methylene blue
Languages : en
Pages : 60
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Book Description
Author: Nur Amirah Azhar
Publisher:
ISBN:
Category : Methylene blue
Languages : en
Pages : 60
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Book Description
Author: Mythreyi M
Publisher: Partridge Publishing
ISBN: 1543700608
Category : Medical
Languages : en
Pages : 116
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Book Description
Nanoparticles have received much attention recently due to their use in cancer therapy. Studies have shown that different metal oxide nanoparticles induce cytototoxicity in cancer cells. Drug delivery systems are designed to achieve drug therapeutic index and enhance the efficacy of controlled drug release targeting with specificity and selectivity by successful delivery of therapeutic agents at the desired sites without affecting the non-diseased neighbouring cells or tissues. In this work, nano-titanium dioxide, as anatase phase, was obtained by the sol-gel method with a cleaner technology a bio-extract obtained from the plant Artemisia pallens containing poly alcohols- used as a solvent, the structural, optical, particle size and the morphological properties of TiO2 nanoparticles were analyzed using x-ray diffraction data, scanning electron microscope. The green TiO2 nanoparticles had a bandgap of 3.2 eV. The fourier transformer infra red spectroscopy (FT-IR) shows a single band attributed to TiO2 using the simple aqueous based organic solvent free approach is further used as nano carriers for drug delivery system. Also we have developed and demonstrated a bio-based titanium dioxide that can be loaded with anticancer drug and selectively deliver it to cancer cells with high specificity by achieving the effective cervical cancer cell death without inducing specific toxicity. The study showed that the DOX loaded TiO2 nanocrystals has promising applications in delivery of anticancer drugs.
Author: Martin Mkandawire
Publisher: Cambridge Scholars Publishing
ISBN: 1036404404
Category : Science
Languages : en
Pages : 404
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Book Description
The focus of technological development has changed from sustaining life to improving the quality of life. This change is exerting excessive demand for fuel and resources. The consequences manifest as challenges to environmental and energy sustainability and to climate change. Thus, further technological advancements need urgent re-focusing to save the earth from becoming uninhabitable. This book looks specifically at the direction of technologies and research innovations, including those just entering the market for abating, rehabilitating, and restoring degraded environments. Scientific and engineering perspectives are presented on promising technologies for a) sustaining environmental conditions, which are cost-effective and efficient with the potential to reach the most underprivileged world economies and b) clean energy production, which is either renewable or has low- or zero-carbon emissions. This book is a ‘must-read’ for a diverse and interdisciplinary audience ranging from academics, researchers, industry professionals and advanced students.
Author: A. K. Haghi
Publisher: CRC Press
ISBN: 1926895282
Category : Technology & Engineering
Languages : en
Pages : 232
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Book Description
This new book provides a solid understanding of the recent developments in the field of composites and nanocomposites. It explains the significance of the new fillers, such as graphene and arbon nanotubes in different matrix systems. The application of these materials in biological and others fields also makes this book unique. This detailed study of nanocomposites, their structure, processing and characterization will be of value in all walks of engineering life. The book covers the following topics: • polymer matrix composites • ceramic matrix composites • carbon matrix composites • wood-based composites • biocomposites • ecocomposites • nanocomposites • processing • properties • fracture and damage mechanics • durability • and more Composite materials are solids that contain two or more distinct constituent materials or phases, on a scale larger than the atomic. The term “composite” is usually reserved for those materials in which the distinct phases are separated on a scale larger than the atomic, and in which properties such as the elastic modulus are significantly altered in comparison with those of a homogeneous material. Composites have properties that cannot be achieved by either of the constituent materials alone. Composites are becoming more and more important as they can help improve our quality of life. Composites are put into service in flight vehicles, automobiles, boats, pipelines, buildings, roads, bridges, and dozens of other products. Researchers are finding ways to improve other qualities of composites so they may be strong, lightweight, long-lived, and inexpensive to produce. The science and engineering of composites and nanocomposites draws on traditional characterization and processing technologies. Research describing structures containing nanoparticles seems to rely on methods that are being pushed to the limit of resolution. Preparation of nanocomposites also poses very real processing challenges. The list of questions about the fabrication, characterization, and use of nanocomposites is long despite massive financial and intellectual investment. The magnitude of the effects these small particles impart to the bulk properties of a composite are great enough that the science is likely to continue to grow in importance.
Author: Uma Shanker
Publisher: CRC Press
ISBN: 100060991X
Category : Science
Languages : en
Pages : 359
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Book Description
Nanoscience technology is playing a vital role in multidisciplinary research due to its unique characteristics at nanoscale as compared to bulk materials. In view of such excellent properties, like high surface area, semiconducting nature, and non-toxicity, nanotechnology has emerged as a promising means to curb pollution. Liquid and crystal nanomaterials aim for products and processes that are ecofriendly, economically sustainable, safe, and energy-efficient. One of the most popular fields widely adopted is photocatalysis of nanomaterials that involves photo-conduction in efficient removal/degradation of noxious pollutants. This book focuses on generation of liquid and crystal nanomaterials for environmental remediation.
Author: Nur Azira Iqlima Binti Azmi
Publisher:
ISBN:
Category : Biochemical engineering
Languages : en
Pages : 78
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Book Description
Photocatalytic is a method that can be used to replace conventional wastewater treatment to treat dyes in industry. Photocatalytic degradation of methylene blue (MB) required titanium dioxide (TiO2) photocatalyst under UV radiation. Immobilized TiO2 photocatalyst into support is a solution for easy recovery of photocatalyst after photocatalytic process. Sol-gel method was used to prepare immobilized TiO2 photocatalyst into montmorillonite. The surface morphology of photocatalyst developed has been studied using Scanning Electron Microscope (SEM) where the result indicated that the immobilization was a success. Increasing the amount of montmorillonite used can increase the immbolized amount of TiO2 photocatalyst. The photocatalytic equipment was successfully conducted under UV radiation in a closed box. The photocatalytic degradation was studied by considering three parameters which are photocatalyst loading, initial concentration of MB and pH of solution. Interaction of all three parameters on photocatalytic degradation of methylene was investigated using Design of Expert (DOE) software together with Response Surface Methodology (RSM). The optimum condition found was to be at 40.94 ppm initial concentration of methylene blue with 0.69 g/L photocatalyst loading and pH of 3.13
Author: Dongfang Yang
Publisher: BoD – Books on Demand
ISBN: 1789233267
Category : Technology & Engineering
Languages : en
Pages : 520
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Book Description
Titanium dioxide is currently being used in many industrial products. It provides unique photocatalytic properties for water splitting and purification, bacterial inactivation, and organics degradation. It has also been widely used as the photoanode for dye-sensitized solar cells and coatings for self-cleaning surfaces, biomedical implants, and nanomedicine. This book covers various aspects of titanium dioxide nanomaterials including their unique one-dimensional, two-dimensional, mesoporous, and hierarchical nanostructures and their synthetic methods such as sol-gel, hydrothermal, anodic oxidation, and electrophoretic deposition, as well as its key applications in environmental and energy sectors. Through these 24 chapters written by experts from the international scientific community, readers will have access to a comprehensive overview of the recent research and development findings on the titanium dioxide nanomaterials.
Author: M. Schiavello
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 218
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Book Description
Photocatalysis is a reaction which is accelerated by light while a heterogeneous reaction consists of two phases ( a solid and a liquid for example). Heterogeneous Photocatalysis is a fast developing science which to date has not been fully detailed in a monograph. This title discusses the basic principles of heterogeneous photocatalysis and describes the bulk and surface properties of semiconductors. Applications of various types of photoreactions are described and the problems related to the modeling and design of photoreactors are covered.
Author: Elvis Fosso-Kankeu
Publisher: John Wiley & Sons
ISBN: 1119631394
Category : Science
Languages : en
Pages : 320
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Book Description
Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment comprehensively covers a range of topics aiming to promote the implementation of photocatalysis at large scale through provision of facile and green methods for catalysts synthesis and elucidation of pollutants degradation mechanisms. This book is divided into two main parts namely “Synthesis of effective photocatalysts” (Part I) and “Mechanisms of the photocatalytic degradation of various pollutants” (Part II). The first part focuses on the exploration of various strategies to synthesize sustainable and effective photocatalysts. The second part of the book provides an insights into the photocatalytic degradation mechanisms and pathways under ultraviolet and visible light irradiation, as well as the challenges faced by this technology and its future prospects.
Author: Juan M. Coronado
Publisher: Springer Science & Business Media
ISBN: 1447150619
Category : Technology & Engineering
Languages : en
Pages : 352
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Book Description
Research for the development of more efficient photocatalysts has experienced an almost exponential growth since its popularization in early 1970’s. Despite the advantages of the widely used TiO2, the yield of the conversion of sun power into chemical energy that can be achieved with this material is limited prompting the research and development of a number of structural, morphological and chemical modifications of TiO2 , as well as a number of novel photocatalysts with very different composition. Design of Advanced Photocatalytic Materials for Energy and Environmental Applications provides a systematic account of the current understanding of the relationships between the physicochemical properties of the catalysts and photoactivity. The already long list of photocatalysts phases and their modifications is increasing day by day. By approaching this field from a material sciences angle, an integrated view allows readers to consider the diversity of photocatalysts globally and in connection with other technologies. Design of Advanced Photocatalytic Materials for Energy and Environmental Applications provides a valuable road-map, outlining the common principles lying behind the diversity of materials, but also delimiting the imprecise border between the contrasted results and the most speculative studies. This broad approach makes it ideal for specialist but also for engineers, researchers and students in related fields.
