PHOTOCATALYTIC REDUCTION OF CO2 WITH H2O ON TIO2 AND CU/TIO2 CATALYSTS

被引：141

作者：

YAMASHITA, H

NISHIGUCHI, H

KAMADA, N

ANPO, M

TERAOKA, Y

HATANO, H

EHARA, S

KIKUI, K

PALMISANO, L

SCLAFANI, A

SCHIAVELLO, M

FOX, MA

机构：

[1] NAGASAKI UNIV,FAC ENGN,DEPT APPL CHEM,NAGASAKI 852,JAPAN

[2] OSAKA PREFECTURAL IND TECHNOL RES INST,ANALYT TECHNOL LAB,OSAKA 577,JAPAN

[3] ION ENGN RES INST CORP,HIRAKATA,OSAKA 57301,JAPAN

[4] FUJIKIN INC,SUMINOE KU,OSAKA 559,JAPAN

[5] UNIV PALERMO,DIPARTIMENTO INGN CHIM PROC & MAT,I-90134 PALERMO,ITALY

[6] UNIV TEXAS,DEPT CHEM,AUSTIN,TX 78712

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 1994年 / 20卷 / 08期

关键词：

D O I：

10.1163/156856794X00568

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photoinduced reduction of CO2 by H2O to produce CH4 and CH3OH has been investigated on well-characterized standard TiO2 catalysts and on a Cu2+ loaded TiO2 catalyst. The efficiency of this photoreaction depends strongly on the kind of catalyst and the ratio of H2O to CO2. Anatase TiO2, which has a large band gap and numerous surface OH groups, shows high efficiency for photocatalytic CH4 formation. Photogenerated Ti3+ ions, H and CH3 radicals are observed as reactive intermediates, by ESR at 77 K. Cu-loading of the small, powdered TiO2 catalyst (Cu/TiO2) brings about additional formation of CH3OH. XPS studies suggest that Cu+ plays a significant role in CH3OH formation.

引用

页码：815 / 823

页数：9

共 13 条

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