摘要
采用水热法制备异质结构的硫化亚锡-碳球(SnS-CSs)复合物,并使用扫描电镜和X射线衍射对其进行表征.利用循环伏安法研究SnS-CSs修饰玻碳电极对亚硝酸盐的电催化氧化性能.结果表明:SnS-CSs的电化学活性优于SnS和CSs;在最佳实验条件下, SnS-CSs/GCE电极的氧化峰电流与亚硝酸盐浓度在0.5~1 200.0μmol·L-1范围内呈线性关系,检测限为0.32μmol·L-1.该修饰电极具有良好的重现性、稳定性和抗干扰性,是一种具有广阔应用前景的亚硝酸盐电化学传感器.
Tin(Ⅱ) sulfide-carbon sphere(SnS-CSs) heteronanostructure composites are obtained via a hydrothermal method in this work. The products are characterized by scanning electron microscope(SEM) and X-ray diffraction(XRD). Cyclic voltammetry is used to investigate the electrocatalytic performance of SnS-CSs modified glassy carbon(GC) electrode for nitrite. The results show that the electrochemical activity of the SnS-CSs is better than that of SnS and CSs. In the optimal experimental conditions, SnS-CSs/GCE offers a good linearity from 0.5 to 1 200.0 μmol·L-1. The detection limit of the proposed strategy is estimated to be 0.32 μmol·L-1. The good reproducibility, stability and anti-interference performance of the materials suggest that the modified GCE has great potential working as a nitrite electrochemical sensor for environmental applications.
作者
朱鸣
张娅
许姗
戚华晨
ZHU Ming;ZHANG Ya;XU Shan;QI Huachen(School of Environmental Science&Engineering,Yangzhou Universty,Yangzhou 225127,China)
出处
《扬州大学学报（自然科学版）》
CAS
北大核心
2019年第4期21-25,共5页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省科技厅自然科学基金资助项目(BK20171281)
关键词
硫化亚锡
碳球
亚硝酸盐
电化学传感器
tin(Ⅱ) sulfide
carbon spheres
nitrite
electrochemical sensor
