Structural and surface properties of thermally prepared Ti/RhxTi(1-x)Oy electrodes:: I -: influence of preparation parameters

被引：7

作者：

De Campos, PM

Benedetti, A

De Faria, LA

Cardoso, V

Boodts, JFC

机构：

[1] Univ Sao Paulo, Inst Chem Sao Carlos, Sao Carlos, SP, Brazil

[2] UNESP, Inst Chem Araraquara, Araraquara, SP, Brazil

[3] Univ Fed Uberlandia, Inst Chem, BR-38400 Uberlandia, MG, Brazil

来源：

ELECTROCHIMICA ACTA | 2002年 / 47卷 / 08期

关键词：

electrocatalysis; dimensionally stable anodes; rhodium oxide; optimisation; characterisation;

D O I：

10.1016/S0013-4686(01)00800-3

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrodes of RhxTi(1-x) O-y nominal composition were prepared by thermal decomposition of the chloride or nitrate precursor salts dissolved in strongly acidic medium and applied by brush to both sides of a Tidegrees support. A systematic study of the influence of calcination temperature and time as well as oxygen flux was conducted. The coatings were characterised by SEM, EDAX, XRD, open circuit potential measurements and cyclic voltammetry (CV). Visible-ultraviolet spectrophotometry was employed to identify the chemical form of the precursor in solution while thermogravimetric analysis (TGA) was used to assess the decomposition temperature ranges. Optimisation of the coating preparation parameters showed coatings obtained from [Rh(H2O)(6)](NO3)(3) precursor dissolved in HNO3 1:2 (v/v) and fired at 430 degreesC for 2 h in a 5 1 min (-1) oxygen stream-furnished stable electrodes having the highest electrochemically active surface area. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1283 / 1295

页数：13

共 38 条

[1] Platinum oxide as a catalyst in the reduction of organic compounds III Preparation and properties of the oxide of platinum obtained by the fusion of ceiloroplatinic acid with sodium nitrate [J].