期刊论文

Preparation of MnO_2nanorods-reduced graphene composite modified electrodes and application in detection of amaranth

Deng, Peihong(dph1975@163.com)

中文

复合材料学报

1000-3851

2018

35

11

3227-3234

10.13801/j.cnki.fhclxb.20180329.003

国家自然科学基金（61703152） 湖南省自然科学基金（2016JJ4010 2018JJ3134） 衡阳师范学院省级平台开放基金（GD16K02） 湖南工业大学博士学科建设项目。

本校为通讯机构

利用电化学还原法制备MnO_2纳米棒-还原石墨烯复合修饰电极(MnO_2NRs-ErGO/GCE)用于苋菜红的检测。采用SEM和XRD分别对修饰电极材料进行微观形貌和成分结构表征。通过循环伏安法考察了苋菜红在裸电极、ErGO/GCE和MnO_2NRs-ErGO/GCE上的电化学行为,并对测定条件如pH值、富集电位、富集时间进行了优化。结果表明,MnO_2NRs-ErGO增大了GCE电化学活性面积,提高了苋菜红的电化学氧化响应。在最优的检测条件下,MnO_2NRs-ErGO/GCE线性扫描伏安法检测苋菜红线性范围为2.0×10~(-8)~1.0×10~(-5) mol/L和1.0×10~(-5)~ 4.0×10~(-4) mol/L,检测限为1.0×10~(-8) mol/L。MnO_2NRs-ErGO/GCE用于真实饮料样品...

MnO 2 nanorods-reduced graphene composite modified glassy carbon electrode (MnO 2 NRs-ErGO/GCE) was prepared for the detection of amaranth using electrochemical reduction method. The surface morphology and crystal structure of the modified materials were characterized by SEM and XRD. The electrochemical behavior of amaranth on the bare electrode, ErGO/GCE and MnO 2 NRs-ErGO/GCE modified electrodes were investigated by cyclic voltammetry, respectively. The determination conditions (including pH value, accumulation potential, and accumulation tim...