Preparation, Characterization and Photocatalytic Activity of High Surface Area Titania PDF Download
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Author: Yuhang Bu
Publisher:
ISBN:
Category :
Languages : en
Pages : 274
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Book Description
Author: Yuhang Bu
Publisher:
ISBN:
Category :
Languages : en
Pages : 274
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Book Description
Author: Akira Fujishima
Publisher:
ISBN: 9784939051036
Category : Photocatalysis
Languages : en
Pages : 176
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Book Description
Author: Jamshed A Khan
Publisher:
ISBN: 9781681173238
Category :
Languages : en
Pages : 341
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Book Description
Years of human ignorance has diminished our natural resources and aged our planet. Now, people are making an effort to change the way they are treating the planet. Being more environmentally conscious about the impact materials used for fashion have on our planet is one-way designers can reduce waste and help enable a better world. By going eco-friendly can be less harmful to our natural resources. Not all fashion is following this eco-friendly trend, but more designers are embracing the trend toward eco-fashion than ever before. If the entire fashion industry became eco-friendly, it would make a huge difference for future generations because the fashion industry employs over a billion people globally. There is need for eco-friendly wet processing that is sustainable and beneficial methods. Number of sustainable practices has been implemented by various textile processing industries such as Eco- friendly bleaching; Peroxide bleaching; Eco-friendly dyeing and Printing; Low impact dyes; Natural dyes; Azo Free dyes; Phthalates Free Printing. There are a variety of materials considered "environmentally-friendly" for a variety of reasons. The industry is desperately in the need of newer and very efficient dyeing/finishing and functional treatments of textiles. There is growing awareness and readiness to adapt new perspective on industrial upgradation of Cleaner Production Programme, such new technologies help enterprises achieve green production and cost reduction at the same time. Green Production has become necessary for enterprises under the upgrade and transformation policy. The book Eco-Friendly Textile Dyeing and Finishing covers topics in the area of sustainable practices in textile dyeing and finishing.
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: Aracely Hernández-Ramírez
Publisher: Springer
ISBN: 3319109995
Category : Science
Languages : en
Pages : 298
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Book Description
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.
Author: Azad Kumar
Publisher: BFC Publications
ISBN: 9390675499
Category : Juvenile Nonfiction
Languages : en
Pages : 190
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Book Description
In this thesis, describes a proficient method for synthesis of Titania, titania based nanocomposites, Ni:TiO2, Co:Ni:TiO2, Co:La:TiO2, Co:TiO2, Cu-TiO2, TiO2/PAni, TiO2/PAni/GO, TiO2/PPy and TiO2/PPy/GO nanocomposites. The doping of metal ions were made by solution impregnation method in the Titania nanopowder followed by the calcination in the muffle furnace. The polymer based nanocomposites were prepared by one-step in situ deposition oxidative polymerization of Aniline and pyrrole hydrochloride using Ammonium persulphate (APS) as an oxidant in the presence of ultra-fine grade powder of TiO2 nanoparticles cooled in an ice bath. The obtained nanocomposites were characterized by XRD, TEM, SEM and UV-Vis for band gap determination. The Photocatalytic degradation of Eriochrome black-T, Acetic acid, methyl blue, methyl green, Thymol Blue, Rose Bengal and Victoria blue dye was done at different condition viz concentration of dye, time of illumination, pH and dose of the photocatalyst. The maximum photodegradation was found at 7 pH, lowest concentration of compound solution, highest amount of photocatalyst and 120 min irradiation of visible light. Kinetics of photodegradation was investigated for organic dyes were found first order kinetics. The doping of metal ions and coating of Polyaniline and PolyPyrrole and GO has enhanced the photocatalytic activity of Titania.
Author: Sher Bahadar Khan
Publisher: BoD – Books on Demand
ISBN: 178985475X
Category : Science
Languages : en
Pages : 158
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Book Description
This book enlightens the type, chemical structure, and application of photo-catalysts. It covers the recent developments in photo-catalysts and their applications, particularly in photo-catalytic degradation of different organic pollutants, hydrogen production, etc. It provides a concise but complete coverage and overview of photocatalysts and their recent advances for a broad audience: beginners, graduate students, and specialists in both academic and industrial sectors.
Author: Michał Marszewski
Publisher:
ISBN:
Category : Nanostructured materials
Languages : en
Pages : 191
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Book Description
The objectives of this dissertation are the design, synthesis, and characterization of titania materials with surface area, porosity, crystallinity and doping tailored toward photocatalytic applications. Ultimately, the research should result in a strategy allowing the synthesis of titania with all these important features. The synthetic methods investigated in this research will include: i) soft-templating, ii) hard-templating, and iii) modified precursor strategy. Soft-templating strategy uses organic templates--either block copolymers or surfactants--that under specific conditions assemble into micelles, and later, these micelles are used to template the desired material around them. The resulting organic-inorganic composite is then calcined in air to remove the organic template and recover the final material with high surface area and large pore volume. This work explores 1) synthesis of titania materials in the presence of polymer templates, and the effects of different synthetic conditions on the structure of the resulting materials. Hard-templating, in contrast to soft-templating, uses inorganic templates. The hard template is introduced during the synthesis to cast its shape onto the fabricated material and removed afterwards, when the material has formed. The final material is an inverse replica of the hard template used, typically with a well-developed mesostructure. This work explores 1) hard templating synthesis of titania materials using silica and alumina, and 2) the effects of the template amount and type. The modified precursor strategy is a novel synthetic method, developed in this research, and designed specifically to achieve titania material with high surface area, large pore volume, high crystallinity, and possibly doping. The modified precursors are prepared by reacting generic titania precursors, such as titanium isopropoxide (TIPO), with organic acids, which results in substitution of some or all alkoxide groups in TIPO structure. The goal is to introduce new, easily carbonizable groups in TIPO structure so that the modified precursor can serve as titania and carbon precursor simultaneously. Subsequently, during carbonization in inert atmosphere, a carbon framework is formed that works as a scaffold, protecting titania during its crystallization. Afterwards, the carbon scaffold is removed by calcination in air. This work explores the modified precursor strategy by 1) preparing titania materials from TIPO modified with different carboxylic acids and 2) investigating the effect of the modifying acid on the properties of the carbon-titania composites and the final titania materials.
Author:
Publisher:
ISBN: 9789745314221
Category : Catalysts
Languages : en
Pages :
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Book Description
Titania nanoparticles were prepared via a sol-gel method using titanium isopropoxide as a precursor and underwent calcination at various conditions. Titania was evaluated for its photocatalytic activity in photocatalytic oxidation of ethylene in gas phase. Various characterization techniques, including XRD, XRF, FTIR and nitrogen adsorption, were employed. Effects of calcination conditions, namely, temperature and holding time in the furnace, on properties of titania nanoparticles were investigated. Titania that was calcined at 200 degree celcius for one hour exhibited the highest photocatalytic activity because of its large specific surface area and absence of rutile phase in the photocatalyst. Four different metal oxides, namely, SiO[subscript 2], ZrO[subscript 2], SnO[subscript 2], and CeO[subscript 2], were added to TiO[subscript 2] to form binary metal oxides. The amount of second metal oxide added was 10 wt%. The mixed oxides were calcined at 200 degree celcius for one hour and were then tested for activities. Addition of the second metal oxide appeared to lower photocatalytic activity of the photocatalyst, when compared to that of pure titania.
Author: Jinlong Zhang
Publisher: Springer
ISBN: 9811321132
Category : Science
Languages : en
Pages : 414
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Book Description
This book describes the photocatalytic mechanism, factors affecting photocatalytic activity, design and preparation of different kinds of nanostructured photocatalysts, and their applications in the environmental and energy fields. Further, it illustrates a broad range of modification methods including ion-doping, heterojunction, noble metal deposition, morphological control and sensitizations, which are used to extend the light absorption range of photocatalysts and reduce recombination between electrons and holes. Promising applications include water splitting, contaminant decomposition and photocatalytic reduction of CO2, which are closely related to environmental redemption and new energy development. The book offers an intriguing and useful guide for a broad readership in various fields of catalysis, material sciences, environment and energy.
