摘要
利用电沉积法制备了铂金纳米/壳聚糖/石墨烯修饰电极。利用扫描电镜(SEM)和能量色散X射线光谱(EXD)对铂金纳米/壳聚糖/石墨烯修饰电极进行了表征;采用循环伏安法(CV)对修饰电极电化学性质进行了研究,考察了电沉积时间和电位对修饰电极制备的影响,探讨了修饰电极对鸟嘌呤(G)的电催化作用。利用示差脉冲法(DPV)对G进行检测,在1.0×10^-7~1.4×10^-6 mol·L^-1浓度范围内,G的氧化峰电流和浓度呈良好的线性关系,相关系数为0.9985,检出限(S/N=3)为6.1×10^-8 mol·L^-1。该修饰电极可望用于实际样品中鸟嘌呤的测定。
This paper described an effective route to fabricate a platinum-gold nanoparticles/chitosan/graphene modified glassy carbon electrode(Au-Pt/CS-RGO/GCE)by electrodeposition method.The Au-Pt/CS-RGO/GCE electrodes were characterized by field emission scanning electron microscopy(FE-SEM)and energy-dispersive X-ray spectroscopy(EXD).The electrochemical behaviorsof the modified electrode was investigated by cyclic voltammetry(CV),and theelectrodeposition parameters,including electrodeposition time and potential,were discussed carefully.Moreover,it was found that the prepared modified electrode showed strong electrocatalytic ability towards the oxidation of guanine(G),and DPV method was used to detect guanine based on the linear relationship between oxidation peak current of guanine and its concentration at the range of 1.0×10^-7~1.4×10^-6 mol·L^-1(r=0.9985).The detection limit was 6.1×10^-8mol·L^-1(S/N=3).
作者
吴晴晴
王玉凤
陈志兵
WU Qing-qing;WANG Yu-feng;CHEN Zhi-bing(Department of Food Engineering,Weihai Ocean Vocational College,Rongcheng 264300,China)
出处
《化学研究与应用》
CAS
CSCD
北大核心
2019年第11期1912-1915,共4页
Chemical Research and Application
基金
国家自然科学基金项目(21271136)
威海海洋职业学院科研平台开放基金(GSGC-2019-0010)资助
关键词
铂金纳米
壳聚糖
石墨烯
鸟嘌呤
Platinum-gold nanoparticles
Chitosan
Graphene
Guanine
