新型氧化锌纳米材料在电化学检测对硝基苯酚中的应用  

Synthesis of New Type ZnO Nanomaterial and Its Application for Electrochemical Detection of p-Nitrophenol

作　　者：胡海霞[1,2] 胡世荣[1] 董培辉 唐元军 洪可俊 王松华 

机构地区：[1]闽南师范大学化学与环境学院,漳州363000 [2]福建省漳州市药品检验所,漳州363000

出　　处：《高等学校化学学报》2017年第7期1171-1177,共7页Chemical Journal of Chinese Universities

基　　金：福建省质量技术监督局技术基金(批准号:FJQI2013108)资助~~

摘　　要：通过溶剂热法控制合成了花生形氧化锌纳米材料,并利用扫描电子显微镜(SEM)、X射线粉末衍射仪(XRD)和傅里叶变换红外光谱(FTIR)对材料进行了表征和分析.循环伏安和Nyquist测试结果表明,该材料具有良好的电化学导电性,且对对硝基苯酚(p-NP)具有良好的选择性.侧分脉冲伏安法(DPV)测试结果表明,在p-NP浓度为0.8~24μmol/L和32~80μmol/L这2个浓度范围内,电流强度与浓度呈线性关系,通过3倍信噪比计算得出检测限分别为0.25和0.61μmol/L.该材料修饰的电极具有良好的稳定性和重现性,用于实际样品中p-NP含量的测定显示出优良的效果.A new type nanomaterial, peanut-like ZnO, was synthesized via hydrothermal method, and SEM and XRD were utilized to characterize and analyze the surface morphology and crystalline lattices of the nanomaterials. The electrochemical performance of the peanut-like ZnO was investigated by cyclic voltammetry, Nyquist and differential pulse vohammetry uheriorly. The peanut-like ZnO modified electrode displayed excellent conductivity and had a strong electroreduction ability to detect p-nitrophenol, showing a good linear relationship within the concentration ranges of 0. 8 - 24 μmol/L and 32 - 80 μmol/L, and the detection limits were calculated to be 0. 25μmol/L（3S/N）. The modified electrodes were used to analyze and detect p-nitrophenol in real water samples with the recovery from 95.6% to 103.4%, and gave a satisfactorily result.

关 键 词：新型氧化锌纳米材料 修饰电极 电还原 对硝基苯酚 

分 类 号：O657.1[理学—分析化学] O646[理学—化学]