Pt/TiO2 coupled with water-splitting catalyst for organic pollutant photodegradation: Insight into the primary reaction mechanism - Details

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Abstract：

A　composited　system　was　fabricated　by　coupling　Pt/TiO2　with　water-splitting　catalyst　for　photooxidation　of　organic　pollutants　in　aqueous　solutions.　The　new　composited　system　exhibits　more　efficient　photocatalytic　activity　than　pure　Pt/TiO2　does　under　UV　light　irradiation.　The　promoting　effect　is　dependent　on　the　photo-produced　H2　over　the　composited　system.　The　active　oxygen　species,　hydroxyl　radical　(·OH)　and　hydrogen　peroxide　(H2　O2),　are　measured　by　fluorescence　spectroscopy　and　photometric　method,　respectively.　The　results　reveal　that　the　produced　H2　by　photocatalytic　water　splitting　over　NiO/NaTaO3:La　transfers　to　Pt　particle　of　TiO2　surface,　then　reacts　with　introducing　O2　to　generate　in　situ　intermediate　H2O2,　and　finally　translates　into　·OH　radical　to　accelerate　the　photooxidation　of　organic　pollutants.

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[ 1 ] [Zhang, Z.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 2 ] [Wang, X.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 3 ] [Long, J.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 4 ] [Fu, X.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 5 ] [Ding, Z.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 6 ] [Li, Z.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China

Reprint 's Address：

付先亮
[Fu, X.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China

Email：

xzfu@fzu.edu.cn

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Source ：

Research Letters in Physical Chemistry

ISSN： 1687-6873

Year： 2008

Volume： 2008

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SCOPUS Cited Count： 1

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 1

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化学学院本学院/部未明确归属的数据

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