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author:

Ding, Zhengxin (Ding, Zhengxin.) [1] | Yang, Haiyan (Yang, Haiyan.) [2] | Liu, Junfeng (Liu, Junfeng.) [3] | Dai, Wenxin (Dai, Wenxin.) [4] (Scholars:戴文新) | Chen, Xun (Chen, Xun.) [5] (Scholars:陈旬) | Wang, Xuxu (Wang, Xuxu.) [6] (Scholars:王绪绪) | Fu, Xianzhi (Fu, Xianzhi.) [7] (Scholars:付贤智)

Indexed by:

EI Scopus SCIE

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 H-2 and for preferential CO oxidation in the presence of H-2, as compared to the Pt/Co bimetallic component catalyst (Pt/Co/TiO2) prepared by H-2 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. (c) 2010 Elsevier B.V. All rights reserved.

Keyword:

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

Community:

  • [ 1 ] [Ding, Zhengxin]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China
  • [ 2 ] [Yang, Haiyan]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China
  • [ 3 ] [Liu, Junfeng]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China
  • [ 4 ] [Dai, Wenxin]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China
  • [ 5 ] [Chen, Xun]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China
  • [ 6 ] [Wang, Xuxu]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China
  • [ 7 ] [Fu, Xianzhi]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China

Reprint 's Address:

  • 戴文新

    [Dai, Wenxin]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China

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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

ESI Discipline: CHEMISTRY;

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 25

SCOPUS Cited Count: 26

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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