Solid-phase Titanium Dioxide Photocatalytic Oxidation of Hazardous Organic Compounds on Surfaces

Solid-phase Titanium Dioxide Photocatalytic Oxidation of Hazardous Organic Compounds on Surfaces PDF Author: Alexander P. Jones
Publisher:
ISBN:
Category : Anthracene
Languages : en
Pages : 94

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Solid-phase Titanium Dioxide Photocatalytic Oxidation of Hazardous Organic Compounds on Surfaces

Solid-phase Titanium Dioxide Photocatalytic Oxidation of Hazardous Organic Compounds on Surfaces PDF Author: Alexander P. Jones
Publisher:
ISBN:
Category : Anthracene
Languages : en
Pages : 94

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Heterogeneous Photocatalysis

Heterogeneous Photocatalysis PDF 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.

Photocatalytic Oxidation of Organic Compounds Via Waveguide-supported Titanium Dioxide Films

Photocatalytic Oxidation of Organic Compounds Via Waveguide-supported Titanium Dioxide Films PDF Author: Lawrence W. Miller (Jr.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 238

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Solid State Chemistry and Photocatalysis of Titanium Dioxide

Solid State Chemistry and Photocatalysis of Titanium Dioxide PDF Author: Maria K. Nowotny
Publisher: Trans Tech Publications Ltd
ISBN: 3038133736
Category : Technology & Engineering
Languages : en
Pages : 360

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Book Description
Volume is indexed by Thomson Reuters BCI (WoS). The goal of this special volume was to provide a unique opportunity to exchange information, to present the latest results and to review relevant issues affecting contemporary diffusion research. The large number (over 232) of peer-reviewed papers emphasizes the considerable academic and industrial interest in this field.

Modification of Titanium Dioxide for Photocatalytic Degradation of Indoor Volatile Organic Compounds

Modification of Titanium Dioxide for Photocatalytic Degradation of Indoor Volatile Organic Compounds PDF Author: Zahra Shayegan
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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The indoor air quality (IAQ) concern has risen since people spend most of their time (>90%) in indoor environments. Volatile organic compounds (VOCs) are categorized as a major group of gas pollutants. Indoor VOCs, known as hazardous compounds with several proven adverse health effects. Among various purification techniques, a heterogeneous photocatalytic oxidation process (PCO) is a promising technology for removing indoor VOC contaminants. Titanium dioxide (TiO2) is the leading candidate for PCO given its unique properties. However, no TiO2-based photocatalysts completely satisfy all practical requirements, considering the photoexcited charge carriers' short lifetime and a wide band gap requiring ultraviolet (UV) radiation. Moreover, the application of PCO for VOCs degradation is greatly hindered at high humidity levels. Herein, TiO2 modification techniques that include approaches for overcoming the inherent TiO2 limitations and improving the photocatalytic degradation of VOCs are studied. In this research, strategies for improving TiO2 photocatalyst activities by doping with different metal and/or non-metal ions as well as surface modification have been examined. Accordingly, the adsorption capacity and photocatalytic activity of P25 and surface fluorinated P25 coated on nickel foam were evaluated for VOCs removal. In addition, the photoactivity of visible-light-driven photocatalysts including; anatase/rutile carbon-doped P25, anatase/brookite cerium-doped TiO2, and anatase/brookite iron-doped TiO2 coated on nickel foam were evaluated for degradation of VOCs under both UV and visible light irradiation. Surface fluorination was then applied to reduce the surface hydrophilicity of Ce-TiO2 and Fe-TiO2 photocatalysts with the optimum Ce and Fe contents. Notably, their photocatalytic performance was investigated in continuous flow mode-of-operation reactors with small residence time, different relative humidity levels, and low-level inlet contaminant concentration. These techniques can improve PCO performance through the following mechanisms: i) by introducing an electron capturing level in the band gap that would generate some defects in the TiO2 lattice and help capture charge carriers and can also be excited under visible irradiation; ii) by slowing down the charge carrier recombination rate and increasing VOCs degradation; and iii) by reducing the surface hydrophilicity, which increases VOCs' adsorption capacity at high humid conditions.

Evaluation of Titanium Dioxide as a Photocatalyst for Removing Air Pollutants

Evaluation of Titanium Dioxide as a Photocatalyst for Removing Air Pollutants PDF Author:
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 36

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Surface Modification of TiO2 for Photocatalytic Selective Oxidation of Organic Compounds in Biphasic and Single Phase Systems

Surface Modification of TiO2 for Photocatalytic Selective Oxidation of Organic Compounds in Biphasic and Single Phase Systems PDF Author: Tania Gizeth Vitery Erazo
Publisher:
ISBN:
Category : Cyclohexane
Languages : en
Pages : 198

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Advances in Photocatalytic Disinfection

Advances in Photocatalytic Disinfection PDF Author: Taicheng An
Publisher: Springer
ISBN: 3662534967
Category : Science
Languages : en
Pages : 321

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Book Description
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.

Application of Titanium Dioxide Photocatalysis to Construction Materials

Application of Titanium Dioxide Photocatalysis to Construction Materials PDF Author: Yoshihiko Ohama
Publisher: Springer Science & Business Media
ISBN: 9400712979
Category : Technology & Engineering
Languages : en
Pages : 56

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Book Description
Titanium dioxide photocatalysis is based on the semiconducting nature of its anatase crystal type. Construction materials with titanium photocatalyst show performances of air purification, self-cleaning, water purification, antibacterial action. This book describes principles of titanium dioxide photocatalysis, its applications to cementitious and noncementitious materials, as well as an overview of standardization of testing methods.

Photocatalytic Activity Enhancement of Titanium Dioxide Nanoparticles

Photocatalytic Activity Enhancement of Titanium Dioxide Nanoparticles PDF Author: Mohamed A. Barakat
Publisher: Springer
ISBN: 3319242717
Category : Science
Languages : en
Pages : 39

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Book Description
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.