Synergy of slow photon and chemically amplified photochemistry in platinum nanocluster-loaded inverse titania opals

被引：145

作者：

Chen, Jennifer I. L. ^{[1
]}

Loso, Edward ^{[1
]}

Ebrahim, Naazia ^{[1
]}

Ozin, Geoffrey A. ^{[1
]}

机构：

[1] Univ Toronto, Mat Chem Res Grp, Dept Chem, Toronto, ON M5S 3H6, Canada

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 16期

关键词：

D O I：

10.1021/ja800288f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We show that the photodegraclation efficiency of TiO2 has been amplified 4-fold via the cooperativity of slow photons in photonic crystal and the incorporation of Pt nanoclusters. Various loadings of Pt nanoparticles were photodeposited on the surface of TiO2 inverse opals and the photodegradation of adsorbed acid orange was investigated. While slow photons increased the effective path length of light, Pt nanoparticles extended the lifetimes of the UV-excited electrons and holes. With 2-4 wt % of Pt on the TiO2 inverse opal, we demonstrate a synergistic optical and chemical enhancement for the first time.

引用

页码：5420 / +

页数：3

共 26 条

[1] The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation [J].

Anpo, M ;

Takeuchi, M .

JOURNAL OF CATALYSIS, 2003, 216 (1-2) :505-516

[2] 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

[3] The influence of the preparation methods on the catalytic activity of platinum and gold supported on TiO2 for CO oxidation [J].

Bamwenda, GR ;

Tsubota, S ;

Nakamura, T ;

Haruta, M .

CATALYSIS LETTERS, 1997, 44 (1-2) :83-87

[4] ARTIFICIAL PHOTOSYNTHESIS - SOLAR SPLITTING OF WATER TO HYDROGEN AND OXYGEN [J].

BARD, AJ ;

FOX, MA .

ACCOUNTS OF CHEMICAL RESEARCH, 1995, 28 (03) :141-145

[5] Slow photons in the fast lane in chemistry [J].

Chen, Jennifer I. L. ;

von Freymann, Georg ;

Choi, Sung Yeun ;

Kitaev, Vladimir ;

Ozin, Geoffrey A. .

JOURNAL OF MATERIALS CHEMISTRY, 2008, 18 (04) :369-373

[6] Effect of disorder on the optically amplified photocatalytic efficiency of titania inverse opals [J].

Chen, Jennifer I. L. ;

von Freymann, Georg ;

Kitaev, Vladimir ;

Ozin, Geoffrey A. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (05) :1196-1202

[7] Amplified photochemistry with slow photons [J].

Chen, Jennifer I. L. ;

von Freymann, Georg ;

Choi, Sung Yeun ;

Kitaev, Vladimir ;

Ozin, Geoffrey A. .

ADVANCED MATERIALS, 2006, 18 (14) :1915-+

[8] TRANSPORT AND KINETICS IN PHOTOELECTROLYSIS BY SEMICONDUCTOR PARTICLES IN SUSPENSION [J].

CURRAN, JS ;

LAMOUCHE, D .

JOURNAL OF PHYSICAL CHEMISTRY, 1983, 87 (26) :5405-5411

[9] PLATINUM TITANIUM-DIOXIDE CATALYSTS - A PHOTOCONDUCTIVITY STUDY OF ELECTRON-TRANSFER FROM THE ULTRAVIOLET-ILLUMINATED SUPPORT TO THE METAL AND OF THE INFLUENCE OF HYDROGEN [J].

DISDIER, J ;

HERRMANN, JM ;

PICHAT, P .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1983, 79 :651-660

[10] EFFECT OF PRETREATMENT ON A PLATINIZED TIN OXIDE CATALYST USED FOR LOW-TEMPERATURE CO OXIDATION [J].

DRAWDY, JE ;

HOFLUND, GB ;

GARDNER, SD ;

YNGVADOTTIR, E ;

SCHRYER, DR .

SURFACE AND INTERFACE ANALYSIS, 1990, 16 (1-12) :369-374

← 1 2 3 →