期刊
ELECTROCHIMICA ACTA
卷 56, 期 13, 页码 4930-4936出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2011.03.014
关键词
Carbon nanotubes; Pd nanoparticles; Modified electrode; Hydrazine; Electrocatalytic oxidation
资金
- National Natural Science Foundation of China [20873065, 21073094, 21005039]
- Natural Science Foundation of Jiangsu Higher Education Institutions of China [10KJB150007]
- University Postgraduate Research and Innovation Project in Jiangsu Province [CX10S_036Z]
- Priming Scientific Research Foundation for Advanced Talents in Nanjing Normal University [2010103XGQ0057]
Pd nanoparticle catalysts supported by multiwall carbon nanotubes (Pd/MWNTs) prepared using a complexation-reduction method are used in this study for the electrochemical determination of hydrazine. The physico-chemical properties of the Pd/MWNT catalyst were characterized by X-ray diffraction analysis (XRD), transmission electron microscopy (.TEM) and scanning electron microscopy physico-chemical (SEM). These structural analyses reveal that the Pd/MWNTs-modified glassy carbon electrode possesses a three-dimensional network structure in which the Pd nanoparticles, with an average size of 5 nm, are uniformly distributed on the surface of the MWNTs. After Nation solution was coated on the surface of the Pd/MWNT layer, the resulting Pd/MWNT-Nafion modified electrode retained the three-dimensional network structure. Electrochemical measurements show that the oxidation peak current of hydrazine decreases with increasing pH. Under optimum conditions, the Pd/MWNT-Nafion-based hydrazine sensor exhibits a broad linear calibration range (2.5-700 mu M) and a low detection limit of 1.0 mu M for hydrazine. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据