Electrodeposition of platinum on polytyramine-modified electrodes for electrocatalytic applications

被引：19

作者：

Spataru, Tanta ^{[1
]}

Marcu, Maria ^{[1
]}

Banu, Alexandra ^{[2
]}

Roman, Eugen ^{[1
]}

Spataru, Nicolae ^{[1
]}

机构：

[1] Inst Phys Chem Ilie Murgulescu, Bucharest 060021, Romania

[2] Univ Politehn Bucuresti, Fac Engn & Management Technol Syst, Bucharest 060042, Romania

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 12期

关键词：

Polytyramine; Platinum deposition; Phenol oxidation; Composite material; IMMOBILIZATION; FILM; CAPACITANCE;

D O I：

10.1016/j.electacta.2008.12.050

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Cyclic voltammetry was used in order to deposit conducting polytyramine (PTy) on graphite substrates. In acidic media, ca. 40 deposition cycles resulted in the formation of stable polymer films with reasonably good resistivity. Electrochemical deposition of platinum on the PTy-covered graphite substrate allowed us to obtain a composite material that exhibits, for a platinum loading of 0.34 mg cm(-2), a specific electrochemically active surface area of the Pt particles of ca. 57 m(2) g(-1). Good electrocatalytic activity of this electrode material for phenol oxidation in acidic media was found, and the results suggested that, when deposited as small particles in a PTy matrix, platinum is less sensitive to deactivation by phenol oxidation polymeric products. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3316 / 3319

页数：4

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