【作者】 张丙兴； 张建玲；

【Author】 Bingxing Zhang;Jianling Zhang;CAS Key Laboratory of Colloid,Interface and Thermodynamics,Institute of Chemistry,Chinese Academy of Sciences;

【机构】 胶体界面与化学热力学院重点实验室中国科学院化学研究所；

【摘要】 氧化锌（ZnO）纳米材料作为一种传统半导体材料被广泛应用于光催化及电子器件等领域。如何调控ZnO的微纳结构进而提高其性能是具有重要意义的研究课题。本工作采用湿法制备方法,合成了ZnO纳米片组装体。透射电子显微镜结果表明,所制得材料的形态呈片状聚集的球形结构,即由超薄的ZnO纳米片组装成多孔微米球（1-1.5微米）。进一步采用扫描电子显微镜、X-射线衍射、傅立叶变换红外光谱、X-射线光电子能谱、X-射线吸收光谱、N₂吸附等测试手段对产物的形貌、微观结构和孔性质等进行了表征。将所制备的ZnO材料用于CO₂电还原反应,展现出较高的产物法拉第效率,优于传统ZnO材料的催化活性。由于该材料具有较高的比表面和暴露的活性位点,因此在其他催化反应中也有重要的应用前景。更多还原

【Abstract】 As a traditional semiconductor material, ZnO nanomaterials are widely used in the fields of photocatalysis and electronic devices. To construct the ZnO nanomaterials with desirable structures is of great importance to its applications. Here, the highly porous ZnO microspheres are constructed by a wet chemistry method. The obtained material has a spherical structure, which is assembled by ultrathin nanosheets. Different techniques were used to characterize the microstructure and properties of ZnO microspheres, including powder X-ray diffraction, fourier transform infrared, scanning electron microscope and transmission electron microscope, N₂ adsorption, etc. The as-synthesized ZnO shows high activity for CO₂ electroreduction, which is much better than the traditional ZnO material. Owing to the unique features of the as-synthesized ZnO, it can be utilized as catalyst for other chemical reactions.更多还原