新型氧化锌纳米材料在电化学检测对硝基苯酚中的应用

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.

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

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 voltammetry ulteriorly.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 0.25 μmol/L(3%S/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.