NiOOH/ZnO复合光阳极制备与性能研究  

Study on preparation and performance of NiOOH/ZnO composite photoanode

作　　者：伍芳艺 卫博慧 王磊 孟莉新 赵燕飞 姚陈忠 WU Fang-yi;WEI Bo-hui;WANG Lei;MENG Li-xin;ZHAO Fei-yan;YAO Chen-zhong(Science Experiment Center,Yuncheng University,Yuncheng 044000,China)

机构地区：[1]运城学院理科实验中心

出　　处：《化学研究与应用》2019年第9期1673-1678,共6页Chemical Research and Application

基　　金：国家自然科学基金项目(21576230,51808485)资助;中国国家留学基金;山西省优秀青年基金项目(201701D211004)资助;山西省青年基金项目(201701D221045)资助

摘　　要：以NiOOH为助催化剂对ZnO进行改性,采用电化学沉积方法制备了纳米阵列结构的NiOOH/ZnO复合光电极。运用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、傅立叶红外光谱仪(FT-IR)和紫外可见光谱(UV-Vis)等测试手段对样品进行表征,并用电化学方法研究电极材料的光电化学性能。结果表明,制备的复合电极中NiOOH在ZnO表面分布均匀,颗粒大小约为50 nm,该复合电极在紫外和可见光区均表现出优良的光学吸收性能;电化学研究表明,该复合电极电阻率小,在模拟太阳光条件下其光电化学响应性能比ZnO明显增强,且对甲醇有良好的光电催化性质。NiOOH/ZnO复合电极展现出的这些优良光电化学性能,预示其在光电化学领域将会有良好地应用前景。NiOOH/ZnO composite photoanode with nano-array structure was prepared by electrochemical deposition after ZnO was modificated using NiOOH as cocatalyst.The samples were characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(FE-SEM),transmission electron microscopy(TEM),Fourier transform infrared spectroscopy(FT-IR)and ultraviolet-visible spectroscopy(UV-Vis).Theirelectrochemical properties were studied by electrochemical method.The results show that the NiOOH can be distributed evenly on the surface of the ZnO in the composite electrode,and the particle size is about 50 nm.The composite electrode exhibits excellent optical absorption properties in both ultraviolet and visible regions,and had low resistivity under simulated sunlight conditions.The photoelectrochemical response of the composite electrode is much stronger than that of ZnO,and it had good photocatalytic properties for methanol.After 100 min,the photoelectrochemical degradation rate of NiOOH/ZnO is about 95%,which is higher than that of ZnO.These excellent photoelectrochemical properties of composite electrodes indicate that they will have good application prospects in the field of photoelectrochemistry in the future.

关 键 词：羟基氧化镍 光学性能 复合电极 光电化学 

分 类 号：O646[理学—物理化学]