Electrochemical reaction of nitrobenzene and its derivatives on glassy carbon electrode modified with MnFe₂O₄ colloid nanocrystal assemblies

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• 作者：Yutao SangAuthor Vitae ; Yuqian CuiAuthor Vitae ; Zhen LiAuthor Vitae ; Wanneng Ye ; ^{ywn@qdu.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Hongliang LiAuthor Vitae ; X.S. ZhaoAuthor Vitae ; Peizhi Guo ; ^{pzguo@qdu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; ^{guopz77@yahoo.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：MnFe2O4 ; Nitrobenzene ; Colloid nanocrystal assemblies ; Electrocatalysis
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2016
• 出版时间：29 October 2016
• 年：2016
• 卷：234
• 期：Complete
• 页码：46-52
• 全文大小：2396 K

文摘

The electrochemical reduction behavior of nitrobenzene was studied on glassy carbon electrodes modified with MnFe₂O₄ colloid nanocrystal assemblies. The crystalline size and structure of the colloid nanocrystal assemblies were found to play important roles in determining the catalytic activity of the electrode towards nitrobenzene. It was found that nitrobenzene was first reduced to phenylhydroxylamine via a four-electron reduction pathway, then phenylhydroxylamine was oxidized to nitrosobenzene by losing two-electron on the electrode. The electrochemical reaction mechanisms of p-nitrotoluene and m-dinitrobenzen on the electrodes were discussed and analyzed based on the experimental data.