氧化铈的光催化研究及应用进展

Research and application progress on ceria photocatalysis

氧化铈是一种n型半导体,由于其独特的晶体结构和Ce^(3+)、Ce^(4+)间的可逆转变,具有优异的储氧和放氧能力,使其成为一种重要的光催化材料。近年来,氧化铈作为光催化剂在环境治理和能源利用等方面的应用研究已引起广泛地关注。从氧化铈的结构、基本性质及光催化基本原理入手,阐述了氧化铈通过负载、掺杂和半导体复合等手段提高氧化铈光催化性能的方法,对近年来氧化铈在光催化降解有机污染物、光催化二氧化碳还原、光解水制氢和光催化固氮方面的应用研究进展进行了总结。最后,对氧化铈在光催化应用领域未来的发展前景提出了展望。

Ceria is an n-type semiconductor.Due to its unique crystal structure and reversible conversion between Ce^(3+) and Ce^(4+),ceria has excellent oxygen storage and release capacity,which makes it an important photocatalytic material.In recent years,cerium oxide as a photocatalyst in environmental treatment and energy utilization has attracted extensive attention.Starting from the structure,basic properties and photocatalysis principle of ceria,the methods to improve the photocatalytic performance of ceria by loading,doping and semiconductor compounding were described.The application research progress of ceria in photocatalytic degradation of organic pollutants,photocatalytic carbon dioxide reduction,photocatalytic water splitting for hydrogen production and photocatalytic nitrogen fixation in recent years were summarized.Finally,the future development of ceria in the field of photocatalysis was prospected.