【作者】 程丹； 周键； 李玉刚； 李曦；

【Author】 Dan Cheng;Xi Li;School of Chemistry,Chemical Engineering and Life Sciences,Wuhan University of Technology;

【机构】 武汉理工大学化生学院；

【摘要】 本文通过先将单壁碳纳米管(SWCNTs)滴加到裸电极表面,再电聚合Cu-MOF-199这一简单经济的方法制备电极。Cu-MOF-199和SWCNTs的联合使修饰电极具备优异的电催化性能和稳定性。我们采用扫描电镜(SEM)、红外(FT-IR)、循环伏安(CV)以及差分脉冲伏安(DPV)来对修饰电极的表面结构和电化学性能进行表征。我们用修饰电极来同步检测抗坏血酸(AA)、多巴胺(DA)和尿酸(UA)。经过一系列条件优化,AA,DA和UA的检测范围和检测限分别达到1-909μM,1-741μM,5-99μM;0.59μM,0.06μM,0.21μM,优于大多数文献。更多还原

【Abstract】 A simple and economical approach to fabricate MOF-199 / single-walled carbon nanotubes(SWCNTs) modified electrodes by dropping SWCNTs on the bare GCE and then electropolymerizing MOF-199 on the surface of SWCNTs modified electrode. The combination of MOF-199 and SWCNTs endows the modified electrode with excellent electrocatalytic activity and stability. Scanning electron microscopy(SEM), Fourier-transform infrared(FT-IR), cyclic voltammetry(CV) and differential pulse voltammetry(DPV) were performed to characterize the electrochemical performance and surface characteristics of the as-prepared electrode. The modified electrode possessed excellent electrocatalytic activity for the simultaneous detection of ascorbic acid(AA), dopamine(DA) and uric acid(UA). After the optimization of experimental conditions, the linear ranges of AA, DA and UA were obtained as 1-909 μM, 1-741 μM and 5-99 μM with corresponding detection limits of 0.59 μM, 0.06 μM and 0.21 μM(S/N = 3) respectively.更多还原