类石墨相氮化碳-碳纳米管复合膜修饰电极及对苯酚的电化学分析测定研究  

A glassy carbon electrode modified with graphitic carbon nitrides-carbon nitride nanotubes composite film for the electrochemical analytical determination of phenol

作　　者：王玫 田鑫 马璀[2] Wang Mei;Tian Xin;Ma Cui(Medical Science and Technology Research Center,Yinchuan 750010,China;School of Basic Medicine,Ningxia Medical University,Yinchuan 750010,China)

机构地区：[1]宁夏医科大学医学科学技术研究中心,宁夏银川750010 [2]宁夏医科大学基础医学院,宁夏银川750010

出　　处：《化学传感器》2019年第2期48-54,共7页Chemical Sensors

基　　金：宁夏自然科学基金项目(2018A0009);国家自然科学基金项目(51862029)。

摘　　要：该实验利用三聚氰胺(Melamine,MAM)和碳纳米管(Carbon Nanotubes,CNTs)之间的π-π堆积和静电作用通过固体研磨热聚合得到了类石墨相氮化碳-碳纳米管复合材料,采用SEM,TEM,XRD等方法对材料进行表征。利用循环伏安法和示差脉冲伏安法研究了苯酚在该修饰电极上的电化学行为。研究表明,该复合材料对苯酚具有良好的电催化活性。在最优实验条件下,采用示差脉冲伏安法测定了苯酚的线性范围为:1.0×10^-5~9.0×10^-5 mol/L,检出限为1.5×10^-6 mol/L(S/N=3)。该研究为苯酚的电化学研究提供了新的催化材料及实验基础。In this work,A new class of nanocomposite graphitic carbon nitride(g-C3N4)-carbon nanotubes(CNTs)has been synthesized via solid grinding of melamine and CNTs followed by thermal polymerization which driven byπ-πstacking and electrostatic interactions.Then the g-C3N4-CNTs composite-modified glassy carbon electrode was fabricated by coated.The g-C3N4-CNTs composites were characterized by Scanning electron microscopy,Transmission electron microscopy,X-ray diffraction.The electrochemical behavior of phenol was investigated on the modified electrode by cyclic voltammetry(CV)and differential pulse voltammetry(DPV).The results showed that the g-C3N4-CNTs/GCE exhibited excellent electrocatalytic activity to phenol.Under the optimum condition,DPV method was used to investigate the relationship of phenol,the result showed that the linear range for the calibration curve were 1.0×10^-5~9.0×10^-5 mol/L.The detection limit of g-C3N4-CNTs/GCE for phenol was 1.5×10^-6 mol/L(S/N=3).This work provided the electrochemistry research testing theories for phenol.

关 键 词：类石墨相氮化碳 碳纳米管 苯酚 电催化氧化 

分 类 号：TB332[一般工业技术—材料科学与工程] O657.1[理学—分析化学] X832[理学—化学]