【作者】 谭东兴； 张建玲；

【Author】 Dongxing Tan;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】 氧化亚铜是一种典型的P型半导体材料,被广泛应用于太阳能转化、传感器、电极材料以及各种催化反应。如何调控氧化亚铜的组成和结构进而提高其催化性能具有极其重要的意义。本文利用溶剂热法制备了氧化亚铜/聚合物复合物中空纳米球。扫描电子显微镜(SEM)和透射电子显微镜(TEM)图片显示,氧化亚铜/聚合物纳米球粒径大约为200纳米,呈空心结构,壁厚大约为30纳米,且纳米球的外壳由小的纳米颗粒组装而成。采用X-射线衍射、红外光谱、X-射线光电子能谱等多种表征手段对氧化亚铜/聚合物复合材料的结构、组成、组分间相互作用等进行了研究。以氧化亚铜/聚合物中空纳米球为电催化剂,可以有效地将二氧化碳转化为甲酸,且具有较高的法拉第效率和电流密度。另外,由于聚合物的稳定作用,氧化亚铜在二氧化碳还原过程中始终保持着较高的稳定性。氧化亚铜/聚合物复合材料在其他催化反应中也具有一定的应用前景。更多还原

【Abstract】 Cuprous oxide is a typical P-type semiconductor material, which is widely used in solar energy conversion, sensors, electrode materials and various catalytic reactions. To regulate the composition and structure of cuprous oxide and improve its catalytic performance is of great significance. In this study, hollow cuprous oxide/polymer composite was prepared by solvothermal method. Scanning electron microscopy(SEM) and transmission electron microscopy(TEM) images show that the particle size of cuprous oxide/polymer composite is about 200 nm, the wall thickness is about 30 nm, and the shell of the nanosphere is composed of small nanoparticles. Using cuprous oxide/polymer composite as electrocatalyst, carbon dioxide can be effectively converted into formic acid with high faradaic efficiency and current density. In addition, due to the stabilization of polymer, cuprous oxide maintains high stability in the process of carbon dioxide reduction. Cuprous oxide/polymer composites also open up new opportunities in other catalytic reactions.更多还原