标题：Effective and rapid electrochemical detection of hydrazine by nanoporous gold
作者：Xiuling Yan;Fanhui Meng;Songzhi Cui;Jianguo Liu;Jun Gu;Zhigang Zou
作者机构：[Yan, X] School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China, School of Chemistry and Bioscience, Yili Normal Unive 更多
通讯作者地址：[Liu, JG]Nanjing Univ, Dept Mat Sci & Engn, Ecomat & Renewable Energy Res Ctr, 22 Hankou Rd, Nanjing 210093, Peoples R China.
来源：Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry
关键词：Nanoporous gold;Electrochemical detection;Hydrazine oxidation
摘要：Nanoporous gold (NPG) membranes prepared by dealloying AgAu alloys in concentrated nitric acid towards hydrazine electrochemical oxidation were studied. Compared with bulk gold, NPG shows not only the enhanced current but also the lower overpotential of hydrazine oxidation. The diffusion coefficient of hydrazine was examined to be 1.65 ×10~(-5) cm~2 s~(-1) using chronoamperometry. In addition, it can be found that the behavior of hydrazine oxidation on NPG depends strongly on the pH value of the solution.A detection limit of 16.7 nM hydrazine can be determined by high sensitive NPG. These results indicate that NPG can be employed to be as an efficient electrode material of electrochemical sensors for hydrazine detection in solution.