Synthesis, characterization and applications of nanomaterials in the field of photocatalysis - Couverture souple
Synopsis
Doctoral Thesis / Dissertation from the year 2011 in the subject Chemistry - Materials Chemistry, East China University of Science and Technology (-), language: English, abstract: Considerable effort has been made to design, fabricate, and manipulate nanostructured materials by innovative approaches. The precise control of nanoscale structures will pave the way not only for elucidating unique size/shape dependent physicochemical properties but also for realizing new applications in science and technology. Nanotechnology offers unprecedented opportunities for improving our daily lives and the environment in which we live. This thesis mainly describes recent progress in the design, fabrication, and modification of nanostructured semiconductor materials for environmental applications. The scope of this thesis covers TiO2, Bi2O3 and BiOCl materials, focusing particularly on TiO2-based nanostructures (e.g., pure, doped, coupled, mesoporous, hierarchically porous, and ordered mesoporous TiO2). Mesoporous titania is of particular interest since this class of materials possesses well-defined porosity and large specific surface areas. For photocatalytic degradation of organics, these desirable properties are anticipated to improve the efficiency. So in the first part of work, I have synthesized the mesoporous titania by using poly ethylene glycol as a template in dilute acetic acid aqueous solution by hydrothermal process and investigated the effect of PEG molecular weights and thermal treatment on the resultant structure and photocatalytic activity. When the molecular weights of PEG vary from 600 to 20,000, the particle sizes of mesoporous-TiO2 structure decrease from 15.1 to 13.3 nm and mean pore sizes increase from 6.9-10.6 nm. The activities of these mesoporous-TiO2 photocatalysts prepared by using PEG are evaluated and compared with Degussa P-25 using chloro-phenol as a testing compound. [...]
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Synthesis, Characterization and Applications of Nanomaterials in the Field of Photocatalysis
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Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Doctoral Thesis / Dissertation from the year 2011 in the subject Chemistry - Materials Chemistry, East China University of Science and Technology (-), language: English, abstract: Considerable effort has been made to design, fabricate, and manipulate nanostructuredmaterials by innovative approaches. The precise control of nanoscale structures will pave theway not only for elucidating unique size/shape dependent physicochemical properties but alsofor realizing new applications in science and technology. Nanotechnology offersunprecedented opportunities for improving our daily lives and the environment in which welive.This thesis mainly describes recent progress in the design, fabrication, and modificationof nanostructured semiconductor materials for environmental applications. The scope of thisthesis covers TiO2, Bi2O3 and BiOCl materials, focusing particularly on TiO2-basednanostructures (e.g., pure, doped, coupled, mesoporous, hierarchically porous, and orderedmesoporous TiO2).Mesoporous titania is of particular interest since this class of materials possesseswell-defined porosity and large specific surface areas. For photocatalytic degradation oforganics, these desirable properties are anticipated to improve the efficiency. So in the firstpart of work, I have synthesized the mesoporous titania by using poly ethylene glycol as atemplate in dilute acetic acid aqueous solution by hydrothermal process and investigated theeffect of PEG molecular weights and thermal treatment on the resultant structure andphotocatalytic activity. When the molecular weights of PEG vary from 600 to 20,000, theparticle sizes of mesoporous-TiO2 structure decrease from 15.1 to 13.3 nm and mean poresizes increase from 6.9-10.6 nm. The activities of these mesoporous-TiO2 photocatalystsprepared by using PEG are evaluated and compared with Degussa P-25 using chloro-phenolas a testing compound. [.] 176 pp. Englisch. N° de réf. du vendeur 9783640986347
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Taschenbuch. Etat : Neu. Druck auf Anfrage Neuware - Printed after ordering - Doctoral Thesis / Dissertation from the year 2011 in the subject Chemistry - Materials Chemistry, East China University of Science and Technology (-), language: English, abstract: Considerable effort has been made to design, fabricate, and manipulate nanostructuredmaterials by innovative approaches. The precise control of nanoscale structures will pave theway not only for elucidating unique size/shape dependent physicochemical properties but alsofor realizing new applications in science and technology. Nanotechnology offersunprecedented opportunities for improving our daily lives and the environment in which welive.This thesis mainly describes recent progress in the design, fabrication, and modificationof nanostructured semiconductor materials for environmental applications. The scope of thisthesis covers TiO2, Bi2O3 and BiOCl materials, focusing particularly on TiO2-basednanostructures (e.g., pure, doped, coupled, mesoporous, hierarchically porous, and orderedmesoporous TiO2).Mesoporous titania is of particular interest since this class of materials possesseswell-defined porosity and large specific surface areas. For photocatalytic degradation oforganics, these desirable properties are anticipated to improve the efficiency. So in the firstpart of work, I have synthesized the mesoporous titania by using poly ethylene glycol as atemplate in dilute acetic acid aqueous solution by hydrothermal process and investigated theeffect of PEG molecular weights and thermal treatment on the resultant structure andphotocatalytic activity. When the molecular weights of PEG vary from 600 to 20,000, theparticle sizes of mesoporous-TiO2 structure decrease from 15.1 to 13.3 nm and mean poresizes increase from 6.9-10.6 nm. The activities of these mesoporous-TiO2 photocatalystsprepared by using PEG are evaluated and compared with Degussa P-25 using chloro-phenolas a testing compound. [.]. N° de réf. du vendeur 9783640986347
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Synthesis, characterization and applications of nanomaterials in the field of photocatalysis
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GRIN Verlag, 2011
ISBN 10 : 3640986342
ISBN 13 : 9783640986347
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Taschenbuch. Etat : Neu. Synthesis, characterization and applications of nanomaterials in the field of photocatalysis | Shamaila Sajjad | Taschenbuch | 176 S. | Englisch | 2011 | GRIN Verlag | EAN 9783640986347 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu. N° de réf. du vendeur 106835324
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