In situ Supported Nanoscale RuxTi1-xO2 on Anatase TiO2 with Improved Electroactivity

被引：24

作者：

Chen, Ruiyong ^{[1
]}

Trieu, Vinh ^{[1
]}

Natter, Harald ^{[1
]}

Stoewe, Klaus ^{[1
]}

Maier, Wilhelm F. ^{[1
]}

Hempelmann, Rolf ^{[1
]}

Bulan, Andreas ^{[2
]}

Kintrup, Juergen ^{[2
]}

Weber, Rainer ^{[2
]}

机构：

[1] Univ Saarland, D-66123 Saarbrucken, Germany

[2] Bayer MaterialSci AG, D-51368 Leverkusen, Germany

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 23期

关键词：

SOL-GEL; SURFACE; NANOPARTICLES; NANOCRYSTALS; OXIDES; RUO2; REACTIVITY; ELECTRODES; CHEMISTRY; EVOLUTION;

D O I：

10.1021/cm102414n

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：

A facile preparation strategy to obtain a novel coating structure with in situ supported active nanoscale RuxTi1-xO2 on inert anatase TiO2 by using a combined sol-gel/solvothermal route was reported. Transmission electron microscopy (TEM) images of the powders scratched from the SVTPST coatings show the 20 nm sized, well-crystallized anatase TiO2 particles, and the neighboring rutile RuxTi1-xO2 domains of a few nanometers in size with orientational disorder and lattice distortions. The aspects responsible for the enhancement in electrocatalytic activity of the in situ supported rutile nanocrystals include the increased fraction of cus sites due to the reduced particle dimension and the complete crystallization and organic impurities-free catalyst surface assured by the solvothermal processing.

引用

页码：6215 / 6217

页数：3

共 35 条

[1] Electrochemical impedance spectroscopic study of dimensionally stable anode corrosion [J].