Electrodeposition of Pt/SnO2 Films with Three-dimensional Pores for Electrocatalytic Oxidation of Methanol

Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (23): 2669-2674. Previous Articles Next Articles

电沉积三维多孔Pt/SnO₂薄膜及其对甲醇的电催化氧化

周颖华¹^{,2, 岑树琼¹, 李则林¹, 牛振江*^,1}

(¹浙江省固体表面反应化学重点实验室浙江师范大学物理化学研究所金华 321004)
(²金华教育学院生化系金华 321000)

投稿日期:2007-02-12 修回日期:2007-06-08 发布日期:2007-12-14
通讯作者: 牛振江

Electrodeposition of Pt/SnO₂ Films with Three-dimensional Pores for Electrocatalytic Oxidation of Methanol

ZHOU Ying-Hua¹^{,2; CEN Shu-Qiong¹; LI Ze-Lin¹; NIU Zhen-Jiang*^,1}

(¹ Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004)
(² Department of Chemistry & Biology, Jinhua Education College, Jinhua 321000)

Received:2007-02-12 Revised:2007-06-08 Published:2007-12-14
Contact: NIU Zhen-Jiang

Abstract

Using cathodic hydrogen bubbles as templates, three dimensional (3D) porous tin films have been electrodeposited from a bath containing 0.05 mol•dm^－3 SnSO₄ and 1.5 mol•dm^－3 H₂SO₄, at 6.0 A•cm^－2 and 30 ℃. The porous SnO₂ films were produced by heating the Sn films at 200 ℃ for 2 h and 400 ℃ for 2 h, respectively. And 3D porous Pt/SnO₂ (3D-Pt/SnO₂) films were prepared by electrodepositing Pt on the 3D porous SnO₂, in a solution of 0.1% (NH₄)₂PtCl₆ at 30 mA•cm^－2. The morphologies and structures of the films were investigated with scanning electron microscopy and X-ray diffraction. The results showed that the Pt covered mainly the dendrites of SnO₂ to form Pt_shell/SnO_2core dendrites. Curves of cyclic voltammetry in an electrolyte of 0.5 mol•dm^－3 H₂SO₄＋1.0 mol•dm^－3 CH₃OH revealed that the activity and stability for methanol electrooxidation on the 3D-Pt/SnO₂ films were better than those on pure Pt electrodeposited.

Key words: Pt/SnO₂, three-dimensional porous film, electrodeposition, methanol, electrocatalytic oxidation

Cite this article

ZHOU Ying-Hua^1,2; CEN Shu-Qiong; LI Ze-Lin; NIU Zhen-Jiang*^,1. Electrodeposition of Pt/SnO₂ Films with Three-dimensional Pores for Electrocatalytic Oxidation of Methanol[J]. Acta Chimica Sinica, 2007, 65(23): 2669-2674.

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电沉积三维多孔Pt/SnO₂薄膜及其对甲醇的电催化氧化

Electrodeposition of Pt/SnO₂ Films with Three-dimensional Pores for Electrocatalytic Oxidation of Methanol

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电沉积三维多孔Pt/SnO2薄膜及其对甲醇的电催化氧化