氧化亚铜光催化剂的制备方法及其研究进展

Synthesis and research progress of cuprous oxide photocatalyst

氧化物半导体光催化技术是解决水环境污染问题和能源短缺问题的有效方法之一。和其他金属氧化物半导体相比,氧化亚铜(Cu_(2)O)具有无毒性、良好的环境可接受性、低价格和高活性等优点,使得人们在过去的几十年间对其进行了大量的研究。研究者们分别采用液相法、固相法和气相法制备了Cu_(2)O及其复合材料,通过调控合成样品的形貌、增大活性晶面暴露程度、构建分层结构和异质结结构、增大比表面积等手段提高了Cu_(2)O的光催化活性和光稳定性,促进了其在光催化降解染料、太阳能电池和制氢等领域的应用。文章前言部分从Cu_(2)O的主要缺点入手,指出其不同形貌、大小和结构的合成对性能有着重要的影响;主体部分介绍了主要制备方法及其优缺点,评述了研究者主要的研究焦点和取得的进展;结论部分根据目前未解决的Cu_(2)O研究问题展望了未来的研究方向。

Oxide semiconductor photocatalytic technology is one of the effective methods to solve the problem of water pollution and energy shortage.Compared with other metal oxide semiconductors,cuprous oxide has many advantages,such as non-toxicity,good environmental acceptability,low price and high activity,which have led to a great deal of research on this material in the past decades.Researchers prepared cuprous oxide and its composites by liquid phase,solid phase and gas phase methods,respectively.The photocatalytic activity and photostability of cuprous oxide were improved by adjusting the morphology of the synthesized samples,increasing the exposure degree of the active crystal plane,building layered structure and heterojunction structure,and increasing the specific surface area.That has promoted the application of cuprous oxide in many fields,such as photocatalytic degradation of dyes,solar cells and hydrogen production.In the preface of this paper,the main shortcomings of cuprous oxide are discussed to point out that the synthesis of cuprous oxide with different morphologies,sizes and structures has an important effect on its properties.In the main part,the main preparation methods and their advantages and disadvantages are introduced,and the main research focus and progress of the researchers are reviewed.In the conclusion part,the future research direction is prospected according to the unsolved research problems of cuprous oxide.