MnO2 nanoarrays: an efficient catalyst electrode for nitrite electroreduction toward sensing and NH3 synthesis applications

被引：49

作者：

Wang, Rui ^{[1
]}

Wang, Zao ^{[1
,2
]}

Xiang, Xiaojiao ^{[1
]}

Zhang, Rong ^{[2
]}

Shi, Xifeng ^{[3
]}

Sun, Xuping ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China

[2] Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China

[3] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China

来源：

CHEMICAL COMMUNICATIONS | 2018年 / 54卷 / 73期

基金：

中国国家自然科学基金;

关键词：

ELECTROCHEMICAL METHOD; HYDROGEN-PEROXIDE; NITRATE; CHEMILUMINESCENCE; REDUCTION; GLUCOSE; WATER; PERFORMANCE; ACID; ION;

D O I：

10.1039/c8cc05837g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

It is highly attractive to develop efficient electrocatalysts for the sensitive and selective detection of nitrite. In this communication, we report that an MnO2 nanoarray on titanium mesh (MnO2 NA/TM) is an efficient catalyst electrode for the electroreduction of nitrite. Electrochemical measurements demonstrate that the constructed MnO2 NA/TM sensor offers a superior sensing performance, having a short response time of 3 s, a wide detection range of 1.0 M to 5.0 mM, a low detection limit of 1.5 nM (S/N = 3), and a response sensitivity of 10301 A mM(-1) cm(-2), with satisfactory selectivity, specificity, and reproducibility. This electrochemical system is also capable of catalyzing the electrochemical reduction of nitrite to NH3 with a transformation efficiency of 6%.

引用

页码：10340 / 10342

页数：3

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