Promoted CO oxidation activity in the presence and absence of hydrogen over the TiO2-supported Pt/Co-B bicomponent catalyst - Details

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Abstract：

A　Pt　and　Co-B　bicomponent　catalyst　supported　on　TiO2　(Pt/Co-B/TiO2)　is　prepared　by　a　two-step　impregnation-reduction　method.　This　Pt/Co-B/TiO2　catalyst　exhibits　a　higher　activity　for　CO　oxidation　in　the　absence　of　H2　and　for　preferential　CO　oxidation　in　the　presence　of　H2,　as　compared　to　the　Pt/Co　bimetallic　component　catalyst　(Pt/Co/TiO2)　prepared　by　H2　reduction.　Based　on　the　results　of　the　X-ray　photoelectron　spectroscopy　analysis,　the　CO　adsorption　over　different　catalysts　and　the　density　functional　computation　of　Co-B,　it　is　proposed　that　the　electron　transfer　from　B　to　Co　atoms　in　Co-B　with　an　amorphous　structure　may　be　responsible　for　the　promoted　oxidation　of　CO　over　Pt/Co-B/TiO2.　This　electron　transfer　can　keep　a　high　surface　electron　density　of　Pt　in　Pt/Co-B/TiO2　via　inhibiting　the　electron　transfer　from　Pt　to　Co　atoms,　which　is　favorable　for　the　activation　of　CO　species　adsorbed　at　Pt　surface.　©　2010　Elsevier　B.V.

Keyword：

Cobalt boron compound; Electron transfer; Oxidation of carbon monoxide; Platinum cobalt bicomponent catalyst

Community：

[ 1 ] [Ding, Z.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 2 ] [Yang, H.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 3 ] [Liu, J.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 4 ] [Dai, W.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 5 ] [Chen, X.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 6 ] [Wang, X.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
[ 7 ] [Fu, X.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China

Reprint 's Address：

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

Email：

daiwenxin@fzu.edu.cn

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2011

Issue： 3-4

Volume： 101

Page： 326-332

5 . 6 2 5

JCR@2011

2 0 . 3 0 0

JCR@2023

JCR Journal Grade：1

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SCOPUS Cited Count： 24

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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