Plasmonic gold-silver alloy on TiO2 photocatalysts with tunable visible light activity

被引：131

作者：

Verbruggen, Sammy W. ^{[1
,2
]}

Keulemans, Maarten ^{[1
]}

Filippousi, Maria ^{[3
]}

Flahaut, Delphine ^{[4
]}

Van Tendeloo, Gustaaf ^{[3
]}

Lacombe, Sylvie ^{[4
]}

Martens, Johan A. ^{[2
]}

Lenaerts, Silvia ^{[1
]}

机构：

[1] Univ Antwerp, Dept Biosci Engn, B-2020 Antwerp, Belgium

[2] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, B-3001 Louvain, Belgium

[3] Univ Antwerp, EMAT, B-2020 Antwerp, Belgium

[4] Univ Pau & Pays Adour, IPREM UMR CNRS 5254, F-64053 Pau 9, France

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2014年 / 156卷

关键词：

Photocatalysis; Surface plasmon resonance (SPR); Titanium dioxide (TiO2); Stearic acid; Visible light; Gold; Silver; NANOPARTICLE SYNTHESIS; METAL NANOPARTICLES; NANOCOMPOSITE FILMS; STEARIC-ACID; NANOSTRUCTURES; OXIDATION; DIOXIDE; ENERGY; DESTRUCTION; DEPENDENCE;

D O I：

10.1016/j.apcatb.2014.03.027

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：

Adaptation of the photoresponse of anatase TiO2 to match the solar spectrum is an important scientific challenge. Modification of TiO2 with noble metal nanoparticles displaying surface plasmon resonance effects is one of the promising approaches. Surface plasmon resonance typically depends on chemical composition, size, shape and spatial organization of the metal nanoparticles in contact with TiO2. AuxAg(1-x) alloy nanoparticles display strong composition-dependent surface plasmon resonance in the visible light region of the spectrum. In this work, a general strategy is presented to prepare plasmonic TiO2-based photocatalysts with a visible light response that can be accurately tuned over a broad range of the spectrum. The application as self-cleaning material toward the degradation of stearic acid is demonstrated for a plasmonicTiO(2) photocatalyst displaying visible light photoactivity at the intensity maximum of solar light around 490 nm. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：116 / 121

页数：6

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