摘要
本文通过超声波制备石墨烯(r GO)和Zr O2复合材料修饰电极,采用CV法、EIS法扫描电子显微镜(SEM)和能量色散X射线光谱(EDS)分析对复合材料进行表征。实验发现通过一定比例掺杂后的r GO/ZrO2/GCE复合材料电极比裸漏电极,r GO/GCE和Zr O2/GCE电化学性能得到了很大的提高,特别是浓度2 mg/mL的石墨烯和2 mg/mL的氧化锆以5∶5比例掺杂所制备得到的复合材料阻抗电阻小,有效面积最大,所产生的电流最大。将其应用于亚硝酸钠的检测,发现还原峰电流和亚硝酸钠的浓度具有良好线性(R2=0.9993),最低检测限为1 umol/L,回收率为92%~105%,是一种很好的检测亚硝酸盐的电化学传感器。
In this paper,graphene (rGO) and ZrO2composite material modified electrodes were prepared by ultrasound,and the composite materials were characterized by CV,EIS scanning electron microscopy (SEM) and energy dispersion X-ray spectroscopy (EDS) analysis.The experiment found that the electrochemical properties of rGO/ZrO2/GCE (doping through a certain proportion) were greatly improved than the bare electrode,the rGO/GCE and ZrO2/GCE,especially the concentration of 2 mg/mL graphene and 2 mg/mL zirconia prepared with 5∶5 doping with small impedance resistance,the largest effective area and the largest current.Applied to the detection of sodium nitrite,it is found that the reduction peak current and sodium nitrite concentration have good linearity(R~2=0.9993),the minimum detection limit is 1 umol/L,and the recovery rate is 92%~105%.It is a good electrochemical sensor to detect nitrite.
作者
陈键侨
郑德论
韩飞
林晓芝
Chen Jianqiao;Zheng Delun;Han Fei;Lin Xiaozhi(Department of Natural Science,Shantou Vocational and Technical College,Shantou 515041,China)
出处
《广东化工》
CAS
2022年第24期36-39,共4页
Guangdong Chemical Industry
基金
汕头职业技术学院科研课题项目“基于石墨烯的掺杂修饰光电材料的合成”(SZK2019Y06)。
