Photodeposition of Pt nanoparticles on TiO2-carbon xerogel composites

被引：7
|
作者：
Gomes, Helder T. [1 ,2 ]
Machado, Bruno F. [1 ]
Silva, Adrian M. T. [1 ]
Drazic, Goran [3 ]
Faria, Joaquim L. [1 ]
机构：
[1] Univ Porto, Fac Engn, Dept Engn Quim, Lab Associado LSRE,LCM, P-4200465 Oporto, Portugal
[2] Inst Politecn Braganca, Escola Super Tecnol & Gestao, Dept Tecnol Quim & Biol, P-5300857 Braganca, Portugal
[3] Jozef Stefan Inst, Dept Nanostruct Mat, SI-1000 Ljubljana, Slovenia
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 06期
关键词：
Carbon xerogel; Titanium dioxide; Platinum; Photodeposition; SURFACE-CHEMISTRY; CARBON; OXIDATION;
D O I：
10.1016/j.matlet.2010.12.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Carbon xerogels synthesized from polycondensation of resorcinol with formaldehyde, having specific surface areas in the range 650 to 990 m(2) g(-1) and variable degrees of surface oxidation, are used to prepare TiO2-carbon xerogel composites by sol-gel methods. These composite materials are used to support Pt nanoparticles (5 wt.%) by the photodeposition technique. After a high temperature reduction treatment at 773 K, the obtained materials were characterized in order to assess the interactions between the phases Pt, TiO2 and carbon xerogel. It is observed that the carbon xerogel acts as an adhesive agent of the TiO2 and Pt particles, enhancing the interaction between the metal and the composite support. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：966 / 969
页数：4
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