One-pot method of synthesis of Pt/SnO2 system and its electrocatalytic activity

Chemistry Central Journal

Agnieszka Martyla²  Maciej Kopczyk²  Piotr Marciniak³  Robert Przekop¹ 

[1] Centre of Advanced Technologies Adam Mickiewicz University, 6 Grunwaldzka St., Poznan, 60-780, Poland

[2] Institute of Non-Ferrous Metals Division in Poznan, Central Laboratory of Batteries and Cells, 12 Forteczna St., Poznan, 61-362, Poland

[3] Adam Mickiewicz University Foundation Poznan Science and Technology Park, 46 Rubiez St., Poznan, 61-612, Poland

关键词: One-pot method;    Low temperature treatment;    Electrocatalyst;    Sol–gel;   

Others  :  1213795
DOI  :  10.1186/s13065-014-0049-0

 received in 2014-04-21, accepted in 2014-07-25,  发布年份 2014

【 摘 要 】

Background

Electro-oxidation of methanol in acidic solution was investigated on a Pt/SnO₂ based electrocatalyst obtained by the sol–gel method. Pt/SnO₂ systems were prepared by one pot synthesis using a sol–gel method and tin (IV) acetate as a precursor of SnO₂ and water solution of hexachloroplatinum acid as a source of metallic phase.

Results

The described method, thanks to its simplicity and mildprocessing temperature, offers uniform dispersion of metal phase in the bulk of the gel forming as a result of hydrolysis and condnastionon of tin precursor. It has been found that the obtained system exhibits high electrocatalytic activity just after low temperature processing. This work investigates the effect of the Pt concentration and the influence thermal treatment of Pt/SnO₂ on its electrochemical activity.

Conclusions

The described procedure is a simple method of producing a highly active Pt/SnO₂ electrocatalyst without using thermal treatment in reducing conditions. The oxidation state of Pt is a determining factor for its activity in an electrooxidation process.

【 授权许可】

   
2014 Martyla et al.

【 图 表 】

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