Efficient visible-light-induced photocatalytic reduction of 4-nitroaniline to p-phenylenediamine over nanocrystalline PbBi 2Nb 2O 9 - Details

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Abstract：

Nanocrystalline　PbBi　2Nb　2O　9　was　successfully　prepared　by　a　modified　sol-gel　method.　The　as-prepared　nanocrystalline　PbBi　2Nb　2O　9　was　an　active　visible-light-driven　photocatalyst　for　the　photoreduction　of　4-nitroaniline　to　p-phenylenediamine　in　aqueous　solution　upon　purging　with　N　2.　Its　photocatalytic　activity　was　determined　by　the　balance　between　the　surface　area　and　crystallinity.　The　best　sample　was　obtained　after　calcination　at　650　°C,　giving　4-nitroaniline　conversion　of　∼100%　and　p-phenylenediamine　selectivity　of　∼99%　after　irradiation　for　150　min,　which　was　much　higher　than　those　of　bulk　PbBi　2Nb　2O　9　and　TiO　2-xN　x　photocatalysts.　Further　experiments　revealed　that　oxalate　anion　(as　a　hole　scavenger)　was　indispensable　for　the　photocatalytic　reduction　of　4-nitroaniline.　Moreover,　on　the　basis　of　the　electron　spin　resonance　analysis　result,　a　mechanism　was　proposed　to　explain　the　photoreduction　of　4-nitroaniline　over　nanocrystalline　PbBi　2Nb　2O　9.　©　2012　Elsevier　Inc.　All　rights　reserved.

Keyword：

Nanocrystalline; Nitro reduction; PbBi 2Nb 2O 9; Photocatalysis; Visible light

Community：

[ 1 ] [Wu, W.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 2 ] [Liu, G.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 3 ] [Liang, S.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 4 ] [Chen, Y.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 5 ] [Shen, L.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 6 ] [Zheng, H.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 7 ] [Yuan, R.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 8 ] [Hou, Y.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 9 ] [Wu, L.]State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China

Reprint 's Address：

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

Email：

wuling@fzu.edu.cn

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Source ：

Journal of Catalysis

ISSN： 0021-9517

Year： 2012

Volume： 290

Page： 13-17

5 . 7 8 7

JCR@2012

6 . 5 0 0

JCR@2023

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 64

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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