Novel photocatalyst, Bi 2Sn 2O 7, for photooxidation of As(III) under visible-light irradiation - Details

author：

Tian, Q. (Tian, Q..) ^[1] | Zhuang, J. (Zhuang, J..) ^[2] | Wang, J. (Wang, J..) ^[3] | Xie, L. (Xie, L..) ^[4] | Liu, P. (Liu, P..) ^[5]

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Abstract：

Nanocrystalline　Bi　2Sn　2O　7,　a　visible-light　photocatalyst　synthesized　via　a　facile　hydrothermal　route,　is　used　to　remove　arsenite　from　aqueous　solution　for　the　first　time.　The　as-synthesized　Bi　2Sn　2O　7　product　is　characterized　by　X-ray　diffraction,　N　2　sorption-desorption,　UV-vis　diffuse　reflectance　spectroscopy,　transmission　electron　microscopy,　electron　spin　resonance,　X-ray　photoelectron　spectra,　and　electrochemistry　technology.　The　results　reveal　that　the　sample　has　an　average　particle　size　of　approximately　10　nm,　a　specific　surface　area　of　51.3　m　2/g,　and　a　band　gap　of　2.88　eV.　Moreover,　the　Bi　2Sn　2O　7　nanoparticles　exhibit　a　high　photocatalytic　activity　in　the　oxidation　of　As(III)　(up　to　96.8%)　under　visible-light　irradiation.　O　2　-　and　h　+　are　recognized　as　the　primary　active　species　responsible　for　As(III)　oxidation.　Meanwhile,　a　possible　mechanism　for　the　photo-oxidation　of　As(III)　over　Bi　2Sn　2O　7　is　also　proposed.　©　2012　Elsevier　B.V.

Keyword：

As(III) removal; Bi 2Sn 2O 7; Hydrothermal process; Visible-light photocatalyst

Community：

[ 1 ] [Tian, Q.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou, 350002, China
[ 2 ] [Tian, Q.]Xi'An Catalyst Chemical Co. LTD., Northwest Institute for Nonferrous Metal Research, Xi'an, 710016, China
[ 3 ] [Zhuang, J.]State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
[ 4 ] [Wang, J.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou, 350002, China
[ 5 ] [Xie, L.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou, 350002, China
[ 6 ] [Liu, P.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou, 350002, China

Reprint 's Address：

[Liu, P.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou, 350002, China

Email：

liuping@fzu.edu.cn

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Source ：

Applied Catalysis A: General

ISSN： 0926-860X

Year： 2012

Volume： 425-426

Page： 74-78

3 . 4 1

JCR@2012

4 . 7 0 0

JCR@2023

JCR Journal Grade：1

CAS Journal Grade：2

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 2

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