介孔片层Ni_(2)FeS_(4)纳米结构修饰电极对尿酸的电催化研究  

Electrocatalysis of Uric Acid by Ni_(2)FeS_(4)Mesoporous Sheet Nanostructured Modified Electrode

作　　者：白思奇 吕仁江[1] 高立娣[1] 秦世丽 Bai Siqi;Lü RenJiang;Gao Lidi;Qin Shili(Chemistry and Chemical Engineering Institute,Qiqihar University,Qiqihar,Heilongjiang 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《化学世界》2024年第5期305-311,共7页Chemical World

基　　金：阳极氧化铝微腔反应器开发(No.220122121004)资助项目。

摘　　要：以硝酸镍、硝酸铁为金属源,硫代乙酰胺为硫源,以聚环氧乙烷-聚环氧丙烷-聚环氧乙烷三嵌段共聚物(P123)为导向剂,与致孔剂的在不同金属比下用软模板法合成了介孔Ni_(2)FeS_(4)纳米片,在玻碳电极(GCE)上成膜构成尿酸传感器,通过循环伏安法(CV)、电流时间法(I-t)和差分脉冲伏安法(DPV)检测了修饰电极对尿酸的电催化性能,并将其应用于血清中的尿酸检测。探究了Ni_(2)FeS_(4)支持电解液的pH值及扫描速率的与峰电流的关系,研究结果表明,在最优条件下合成并修饰的电极对尿酸有较高的电化学活性、良好的选择性、稳定性和重现性,其线性范围和检出限分别为3~300和0.55μmol/L,用此方法对血清中的目标物进行测定,回收率为95.2%~103.8%。Ni_(2)FeS_(4)mesoporous nanosheets were synthesized by soft template method under different metal ratios,with nickel nitrate and ferric nitrate acted as metal sources,thioacetamide as sulfur source,PEO20-PPO70-PEO20 triblock copolymer(P123)as guiding and pore-forming agent.The uric acid sensor was formed by film formation on glassy carbon electrode(GCE).Cyclic voltammetry(CV),current time(I-t)and differential pulse voltammetry(DPV)were used to detect uric acid in serum.The relationship between pH and scanning rate of Ni_(2)FeS_(4)supporting electrolyte and peak current was investigated.The results showed that the modified electrode prepared under optimal conditions has high electrochemical activity,good selectivity,stability and reproducibility for uric acid.The linear range and detection limit were 3~300 and 0.55μmol/L,and the recoveries were 95.2%~103.8%.

关 键 词：介孔纳米片 Ni_(2)FeS_(4) 修饰电极 尿酸 电催化 

分 类 号：O614.8[理学—无机化学]