水热法制备二氧化锰及在过氧化氢传感器中的应用

doi:10.16085/j.issn.1000-6613.2017-0157

化工进展 ›› 2017, Vol. 36 ›› Issue (09): 3380-3387.DOI: 10.16085/j.issn.1000-6613.2017-0157

水热法制备二氧化锰及在过氧化氢传感器中的应用

靳福娅¹, 余林¹, 蓝邦^1,2, 程高¹, 孙明¹, 郑小颖¹

1 广东工业大学轻工化工学院, 广东广州 510006;
2 广东省梅州市质量计量监督检测所, 广东梅州 514072

收稿日期:2017-01-22 修回日期:2017-05-15 出版日期:2017-09-05 发布日期:2017-09-05
通讯作者: 余林,教授,主要研究方向为催化新反应、催化新材料、电催化氧还原反应和超级电容器等领域。
作者简介:靳福娅(1992-),女,硕士研究生。E-mail:timegoneby@163.com
基金资助:
国家自然科学基金（21576054）、广东省科技计划（2014A010106030，2016A010104017，2016B020241003）及广东省质监局科技计划（2017ZZ07）项目。

Preparation of MnO₂ nanomaterials in hydrothermal method and applied in hydrogen peroxide sensing

JIN Fuya¹, YU Lin¹, LAN Bang^1,2, CHENG Gao¹, SUN Ming¹, ZHENG Xiaoying¹

1 School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, Guangdong, China;
2 Guangdong Meizhou Quality & Metrology Supervision and Testing Institution, Meizhou 514072, Guangdong, China

Received:2017-01-22 Revised:2017-05-15 Online:2017-09-05 Published:2017-09-05

摘要/Abstract

摘要： 以高锰酸钾、硫酸锰、过硫酸钠等为原料，采用水热法合成了一系列二氧化锰（MnO₂）催化剂，通过X射线衍射分析（XRD）、扫描电镜（SEM）以及N₂吸附-脱附等手段进行了表征。后将一定量的二氧化锰材料与Nafion混合后滴涂于玻碳电极（GCE）表面，构成了一系列新型的过氧化氢传感器。并采用循环伏安法（CV）和计时电流法（I-t）分别对修饰电极进行表征，考察其相应的传感性能。结果表明，海胆状α-MnO₂催化剂修饰的玻碳电极对过氧化氢有优异的电催化性能，其灵敏度为26.2μA·L/mmol。H₂O₂峰电流值在（2×10^-6）~（0.14×10^-3）mol/L范围内与浓度呈线性关系，最低检出限为0.57×10^-6mol/L（S/N=3）。

关键词: 二氧化锰, 水热法, Nafion, 过氧化氢, 电化学传感器

Abstract: A series of manganese dioxide,namely urchin α-MnO₂,α-MnO₂ nanowires and β-MnO₂ nanorods were synthesized using hydrothermal method by changing raw materials such as KMnO₄、MnSO₄、Na₂S₂O₈,etc. The MnO₂ materials were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),and N₂ adsorption-desorption measurements. A novel hydrogen peroxide (H₂O₂)sensor was fabricated by coating the mixture of Nafion and nanomaterials on a glassy carbon electrode(GCE). The performances of the modified electrode was investigated using cyclic voltammetry(CV)and chronoamperometry current-time response(I-t). The test results indicated that the urchin α-MnO₂ nanowires based sensor exhibited the best electro catalytic activity towards the reduction of H₂O₂ with a sensitivity of 26.2μA·L/mmol. And the reduction peak currents of H₂O₂ were linear to their concentrations in the range of 2×10^-6mol/L to 0.14×10^-3mol/L wih a lowest limit of detection of 0.57×10^-6mol/L(S/N=3).

Key words: manganese oxide, hydrothermal method, Nafion, hydrogen peroxide (H₂O₂), electrochemical sensor

中图分类号:

O614.7

靳福娅, 余林, 蓝邦, 程高, 孙明, 郑小颖. 水热法制备二氧化锰及在过氧化氢传感器中的应用[J]. 化工进展, 2017, 36(09): 3380-3387.

JIN Fuya, YU Lin, LAN Bang, CHENG Gao, SUN Ming, ZHENG Xiaoying. Preparation of MnO₂ nanomaterials in hydrothermal method and applied in hydrogen peroxide sensing[J]. Chemical Industry and Engineering Progress, 2017, 36(09): 3380-3387.

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水热法制备二氧化锰及在过氧化氢传感器中的应用

Preparation of MnO₂ nanomaterials in hydrothermal method and applied in hydrogen peroxide sensing

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水热法制备二氧化锰及在过氧化氢传感器中的应用

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Preparation of MnO₂ nanomaterials in hydrothermal method and applied in hydrogen peroxide sensing