摘要
利用电化学方法制备了树枝状纳米银-石墨烯复合材料,该材料对过氧化氢的还原展现出优异的电催化活性,归因于其独特的纳米结构以及纳米银优良的催化性能。用差分脉冲伏安法对过氧化氢进行检测,还原峰电流与其浓度在25~2000μmol/L范围内呈线性关系,灵敏度为4.875mA·cm-2·(mmol/L)-1,检出限为0.61mmol/L,并具有较好的重现性和稳定性。
Ag Nanodendrites-graphene composites were prepared by electrochemical method.The composites exhibited excellent electrocatalytic activity for the reduction of hydrogen peroxide due to its unique nanostructure and excellent catalytic performance of nano-silver.The reduction peak current of hydrogen peroxide was proportional to its concentration in the range of 25-2000μmol/L with the sensitivity of 4.875 mA·cm-2·(mmol/L)-1 and the detection limit of 0.61 mmol/L.This sensor showed a good reproducibility and stability.
作者
郭伟华
张悦
石亚东
GUO Wei-hua;ZHANG Yue;SHI Ya-dong(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013;Chemistry,Biological and Materials Sciences Department,East China University of Technology,Nanchang 330013)
出处
《分析试验室》
CAS
CSCD
北大核心
2019年第12期1397-1400,共4页
Chinese Journal of Analysis Laboratory
基金
国家自然科学基金(21401022)
江西青年科学基金资助项目(201818AB213009)
东华理工大学核资源与环境国家重点实验室开放基金项目(NRE1811)资助
关键词
树枝状银
石墨烯
过氧化氢
修饰电极
电催化
Ag nanodendrites
Graphene
Hydrogen peroxide
Modified electrode
Electrocatalysis
