Pd nanoclusters/TiO2(B) nanosheets with surface defects toward rapid photocatalytic dehalogenation of polyhalogenated biphenyls under visible light - Details

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Abstract：

Constructing　effective　photocatalysts　with　visible　light　response　to　achieve　rapid　dehalogenation　of　polyhalogenated　compounds　remains　a　challenge　nowadays.　Herein,　Pd　nanoclusters-decorated　TiO2　nanosheets　with　surface　defects　(Pd/TNS)　are　designed　for　polyhalogenated　biphenyls　dehalogenation　under　visible　light.　Pd/TNS　is　able　to　rapidly　remove　bromine　atoms　of　4-bromobiphenyl　in　30　min.　Experimental　results　reveal　that　oxygen　vacancies　and　Ti3+　are　in-situ　generated　in　TNS　during　Pd　photodeposition,　which　extend　the　absorption　band　edge　of　Pd/TNS　to　visible　light　region.　Besides,　the　unique　two-dimensional　nanosheets　structure　of　TNS　contributes　to　a　high　surface　area　for　high　dispersion　of　Pd　nanoclusters.　Importantly,　the　Pd　nanoclusters　serve　to　activate　carbon-halogen　bond　in　polyhalogenated　biphenyls　and　hydrogen-oxygen　in　H2O.　The　high　dehalogenation　efficiency　could　be　assigned　to　a　strong　chemical　interaction　and　synergistic　effect　between　the　Pd　nanoclusters　and　TiO2(B)　nanosheets.　Finally,　a　collaborative　mechanism　is　proposed　for　photocatalytic　dehalogenation　of　polyhalogenated　biphenyls　on　Pd/TNS.　©　2020

Keyword：

Pd nanoclusters; Photocatalytic dehalogenation; TiO2(B) nanosheets; Visible light

Community：

[ 1 ] [Guo, W.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Zou, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
[ 3 ] [Guo, B.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Xiong, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Xiong, J.]College of chemistry and material science, Longyan University, Longyan, 364000, China
[ 6 ] [Liu, C.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
[ 7 ] [Xie, Z.]Institute of food safety and environmental monitoring, Fuzhou University350108, China
[ 8 ] [Wu, L.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address：

[Wu, L.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou UniversityChina

Email：

wuling@fzu.edu.cn

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2020

Volume： 277

1 9 . 5 0 3

JCR@2020

2 0 . 3 0 0

JCR@2023

ESI HC Threshold：160

JCR Journal Grade：1

CAS Journal Grade：1

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WoS CC Cited Count：

SCOPUS Cited Count： 65

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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