ZnO-based visible-light photocatalyst Band-gap engineering and multi-electron reduction by co-catalyst

被引：164

作者：

Anandan, Srinivasan ^{[1
]}

Ohashi, Naoki ^{[2
]}

Miyauchi, Masahiro ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2010年 / 100卷 / 3-4期

关键词：

Zinc oxide; Photocatalyst; Band engineering; Visible-light; CHARGE-TRANSFER ABSORPTION; TITANIUM-DIOXIDE; ZINC-OXIDE; THIN-FILMS; TIO2; IRRADIATION; MECHANISM; OXIDATION; CADMIUM; SPECTRA;

D O I：

10.1016/j.apcatb.2010.08.029

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Efficient ZnO based visible-light photocatalysts Cu(II) modified CdxZn1-xO were developed by adopting a hybrid approach consisting of band-engineering by formation of a solid solution and sui face modification of co-catalysts The CdxZn1-xO solid solution exhibited the visible-light activity for decomposing gaseous acetaldehyde while bare ZnO showed negligible activity under visible-light Further the visible-light activity of CdxZn1-xO photocatalysts was greatly improved by the surface modification of Cu2+ ions Photogenerated electrons in CdxZn1-xO are injected into the modified Cu2+ ions under visible-light irradiation and electrons in Cu2+/Cu redox couples cause the efficient reduction of absorbed oxygen molecules The strategy in the present study is a promising approach for applying ZnO-based photocatalysts for indoor applications (C) 2010 Elsevier B V All rights reserved

引用

页码：502 / 509

页数：8

共 44 条

[1] Pristine simple oxides as visible light driven photocatalysts: Highly efficient decomposition of organic compounds over platinum-loaded tungsten oxide [J].

Abe, Ryu ;

Takami, Hiticishi ;

Murakami, Naoya ;

Ohtani, Bunsho .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (25) :7780-+

[2] Complete oxidation of acetaldehyde and toluene over a Pd/WO3 photocatalyst under fluorescent- or visible-light irradiation [J].

Arai, Takeo ;

Horiguchi, Masumi ;

Yanagida, Masatoshi ;

Gunji, Takahiro ;

Sugihara, Hideki ;

Sayama, Kazuhiro .

CHEMICAL COMMUNICATIONS, 2008, (43) :5565-5567

[3] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[4] The cadmium seleniophosphate (CdPSe3) XPS and XAES spectra [J].

Calareso, C ;

Grasso, V ;

Silipigni, L .

APPLIED SURFACE SCIENCE, 2001, 171 (3-4) :306-313

[5] Spatial confinement of laser light in active random media [J].

Cao, H ;

Xu, JY ;

Zhang, DZ ;

Chang, SH ;

Ho, ST ;

Seelig, EW ;

Liu, X ;

Chang, RPH .

PHYSICAL REVIEW LETTERS, 2000, 84 (24) :5584-5587

[6] Trinuclear intermediate in the copper-mediated reduction of O-2: Four electrons from three coppers [J].

Cole, AP ;

Root, DE ;

Mukherjee, P ;

Solomon, EI ;

Stack, TDP .

SCIENCE, 1996, 273 (5283) :1848-1850

[7] Interfacial charge-transfer absorption: Semiclassical treatment [J].

Creutz, C ;

Brunschwig, BS ;

Sutin, N .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (20) :10251-10260

[8] Interfacial charge-transfer absorption: 3. Application to semiconductor-molecule assemblies [J].

Creutz, Carol ;

Brunschwig, Bruce S. ;

Sutin, Norman .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (50) :25181-25190

[9] Combustion synthesis and photocatalytic properties of transition metal-incorporated ZnO [J].

Ekambaram, S. ;

Iikubo, Yoichi ;

Kudo, Akihiko .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 433 (1-2) :237-240

[10] INITIAL AND FINAL-STATE EFFECTS IN ESCA SPECTRA OF CADMIUM AND SILVER-OXIDES [J].

GAARENSTROOM, SW ;

WINOGRAD, N .

JOURNAL OF CHEMICAL PHYSICS, 1977, 67 (08) :3500-3506

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