ZnO/石墨烯修饰电极的制备及电化学性能研究  

Preparation and Electrochemical Properties of ZnO-GO Nanocomposite Modified Electrode

作　　者：刘素芹[1] 王婧雯 戴高鹏[1] 罗天雄[1] 李常贵 

机构地区：[1]湖北文理学院化学工程与食品科学学院低维光电材料与器件湖北省重点实验室,襄阳441053

出　　处：《化学通报》2015年第6期547-551,共5页Chemistry

基　　金：国家自然科学基金项目(51378183);襄阳市科技项目(襄科业[2014]12号)资助

摘　　要：采用水热法合成了纳米氧化锌-氧化石墨烯复合材料,并基于该复合材料构制了一种新型双酚A传感器,研究了该传感器的电化学行为。结果表明,在含8.0×10-5mol/L CTAB的p H 7.0磷酸盐缓冲液中,双酚A在0.573V处出现1个不可逆的氧化峰,具有良好的电化学响应;其氧化峰电流与浓度在1.0×10-8~4.0×10-5mol/L范围内呈良好的线性关系,检出限为5.0×10-9mol/L;对模拟环境水样中双酚A进行3次平行测定的回收率在96.3%~101.9%之间,相对误差在1.2%~3.8%范围内。该传感器具有灵敏度高、线性范围宽的特点。Zn O-graphene oxide nanocomposite was successfully synthesized by a hydrothermal method,and a biosensor for detection of bisphenol A was constructed. The electrochemical behavior of bisphenol A on the Zn Ographene oxide modified glassy carbon electrode( Zn O-GO / GCE) was investigated by cyclic voltammetry( CV) in the presence of cetyl trimethyl ammonium bromide( CTAB). The results showed that bisphenol A exhibits a good electrochemical response on Zn O-GO / GCE in p H 7. 0 phosphate buffer in the presence of 8. 0 × 10- 5mol / L CTAB,and a irreversible oxidation peak can be observed at 0. 573 V. For determination of bisphenol A on the Zn O-GO /GCE,the anodic peak currents were linear related with the concentration of bisphenol A in the range of 1. 0 × 10- 8~4. 0 × 10- 5mol / L,the detection limit was 5. 0 × 10- 9mol / L. The recovery for three parallel determination of bisphenol A in simulation environment water was between 96. 3% and 101. 9%,and the relative error was in the range of 1. 2% ~ 3. 8%. The sensor has the characteristics of high sensitivity and wide linear range.

关 键 词：传感器 纳米氧化锌/氧化石墨烯 修饰电极 循环伏安法 双酚A 

分 类 号：O657.1[理学—分析化学] TP212.2[理学—化学]