Photocatalytic Degradation of Organic Contaminants on Mineral Surfaces

Chen, Chuncheng; Wang, Zhaohui; Ma, Wanhong; Ji, Hongwei; Zhao, Jincai

doi:10.1002/9780470944479.ch4

Cited by 2 publications

(1 citation statement)

References 121 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The photodegradation pathway generally follows either by semiconductor initiated photocatalysis or photosensitized oxidation of the organic molecules. [32][33][34][35] We observed the enhanced photodegradation of CR dye in the presence of the a-Fe 2 O 3 photocatalyst, which could be the result of photosensitization of the dye molecules followed by semiconductor-initiated photocatalysis. The mechanism is proposed as follows: photosensitization of the CR dye takes place firstly where the charge transfer occurs from the LUMO level of the dye to the conduction band of the photocatalyst (eqn.…”

Section: Photocatalytic Performance Analysismentioning

confidence: 79%

Superior photocatalytic behaviour of novel 1D nanobraid and nanoporous α-Fe2O3 structures

et al. 2012

View full text Add to dashboard Cite

Section: Photocatalytic Performance Analysismentioning

confidence: 79%

Superior photocatalytic behaviour of novel 1D nanobraid and nanoporous α-Fe2O3 structures

et al. 2012

View full text Add to dashboard Cite

Mechanisms of Some Heterogeneous Photocatalytic Reactions of Oxidation Occurring via Oxygen Atom Transfer

Bakhtchadjian

2023

Oxygen Atom Transfer Reactions

View full text Add to dashboard Cite

Insights into the mechanisms of oxygen atom transfer in the photooxidation of organic compounds for heterogeneous photocatalytic systems have been presented. These reactions have a wide variety of practical applications in chemistry, biology, and applied sciences. The role of the oxygen atom transfer mechanism in homogeneous photocatalysis has been investigated for nearly a century. Relatively little attention has been paid to the disclosure of oxygen atom transfer reactions in heterogeneous photocatalytic systems. This chapter discusses some problems related to the catalytic oxygen atom transfer in the oxidation of organic compounds, mainly with dioxygen, under UV irradiation or visible light, in heterogeneous reaction systems. Various active oxygen species, including oxygen atom transfer agents, as reaction intermediates can be generated in these systems. Depending on the nature of the active oxygen species, including metal-oxo compounds, the photoassisted catalytic oxygen atom transfer can occur mainly by the primary photoexcitation of either the catalyst or its photosensitive solid support, in rare cases, also the catalyst/support complex. The peculiarities of the mechanism of photo-driven oxygen atom transfer were mainly exemplified by the reactions occurring in heterogeneous catalytic systems containing transition metal oxides, their metalorganic complexes, and other photosensitive solid materials, including heterogenized homogeneous photocatalysts on the different supports, such as the transition metal-oxo complexes on the semiconductor materials. Special attention has been paid to the chemistry of TiO2 and TiO2 -based semiconductor photocatalysis from the point of view of the reaction mechanisms, including oxygen atom transfer reactions.

show abstract

Photocatalytic Degradation of Organic Contaminants on Mineral Surfaces

Cited by 2 publications

References 121 publications

Superior photocatalytic behaviour of novel 1D nanobraid and nanoporous α-Fe2O3 structures

Superior photocatalytic behaviour of novel 1D nanobraid and nanoporous α-Fe2O3 structures

Mechanisms of Some Heterogeneous Photocatalytic Reactions of Oxidation Occurring via Oxygen Atom Transfer

Contact Info

Product

Resources

About