Probing photocatalytic reactions in semiconductor systems: Study of the chemical intermediates in 4 -chlorophenol degradation by a variety of methods

Kimberly A. Gray; Ulick Stafford

doi:10.1163/156856794X00586

Probing photocatalytic reactions in semiconductor systems: Study of the chemical intermediates in 4 -chlorophenol degradation by a variety of methods

Kimberly A. Gray^*, Ulick Stafford

^*Corresponding author for this work

Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

The photocatalytic transformation of 4-chlorophenol (4-CP) has been studied in aqueous slurries, on powders and on immobilized particulate films of TiO₂. These results are compared to those obtained using gamma and pulse radiolysis in order to establish a comprehensive picture of the 4-CP reaction pathway in TiO₂ systems. The disappearance of 4-CP and its reaction intermediates in TiO₂ slurries involves a combination of hydroxyl radical oxidation, direct electron transfer and surface chemical reactions.

Original language	English (US)
Pages (from-to)	835-853
Number of pages	19
Journal	Research on Chemical Intermediates
Volume	20
Issue number	8
DOIs	https://doi.org/10.1163/156856794X00586
State	Published - Jan 1994

Funding

The authors gratefully acknowledge the support of NSF (Grant No. BCS91-57948) and use of the facilities at the University of Notre Dame's Radiation Laboratory and the Center for Bioengineering and Pollution Control. The advice and comments of Drs. Prashant Kamat and K. Vinodgopal are greatly appreciated. The authors would also like to thank Degussa Corporation and Dr. John Crittenden at Michigan Technological University for their gifts of TiO2.

ASJC Scopus subject areas

General Chemistry

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title = "Probing photocatalytic reactions in semiconductor systems: Study of the chemical intermediates in 4 -chlorophenol degradation by a variety of methods",

abstract = "The photocatalytic transformation of 4-chlorophenol (4-CP) has been studied in aqueous slurries, on powders and on immobilized particulate films of TiO2. These results are compared to those obtained using gamma and pulse radiolysis in order to establish a comprehensive picture of the 4-CP reaction pathway in TiO2 systems. The disappearance of 4-CP and its reaction intermediates in TiO2 slurries involves a combination of hydroxyl radical oxidation, direct electron transfer and surface chemical reactions.",

author = "Gray, {Kimberly A.} and Ulick Stafford",

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year = "1994",

month = jan,

doi = "10.1163/156856794X00586",

language = "English (US)",

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AB - The photocatalytic transformation of 4-chlorophenol (4-CP) has been studied in aqueous slurries, on powders and on immobilized particulate films of TiO2. These results are compared to those obtained using gamma and pulse radiolysis in order to establish a comprehensive picture of the 4-CP reaction pathway in TiO2 systems. The disappearance of 4-CP and its reaction intermediates in TiO2 slurries involves a combination of hydroxyl radical oxidation, direct electron transfer and surface chemical reactions.

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Probing photocatalytic reactions in semiconductor systems: Study of the chemical intermediates in 4 -chlorophenol degradation by a variety of methods

Abstract

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