稀土掺杂对半导体光催化剂性能影响的进展(特邀)  

Research Progress on Effect of Rare Earth Doping on Performance of Semiconductor Photocatalysts(Invited)

作　　者：马润东 杨涛[1] 侯新梅[1] 崔香枝[2] 安胜利[3] MA Rundong;YANG Tao;HOU Xinmei;CUI Xiangzhi;AN Shengli(Carbon Neutrality Institute,Beijing University of Science and Technology,Beijing 100871,China;State Key Lab of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;School of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]北京科技大学碳中和研究院,北京100871 [2]中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室,上海200050 [3]内蒙古科技大学材料与冶金学院,包头014010

出　　处：《光子学报》2024年第9期130-142,共13页Acta Photonica Sinica

基　　金：国家杰出青年科学基金(No.52025041);国家自然科学基金(Nos.51902020,51974021,52250091)。

摘　　要：光催化是能够利用太阳能进行能源转化和环境治理的环保方法。稀土元素在光催化中具有独特的电荷调控机制和光学改性机制,能够有效提升传统半导体的光催化活性。首先,从提升半导体光催化剂光电性能和降低载流子复合率方面,介绍了稀土元素的掺杂对半导体光催化剂性能的调控,并根据稀土元素的分类和掺杂所占组元数的不同,分别从一元稀土掺杂、二元共掺杂到多元及高熵稀土掺杂的角度综述了稀土改性半导体光催化剂的研究进展和相应的光催化动力学机理。通过总结可知,稀土元素较大的原子半径能够有效地引起半导体光催化剂的晶格畸变从而增加半导体的缺陷,达到细化颗粒度,暴露催化剂活性位点的作用;同时,稀土元素特殊的能带结构能有效调整半导体光催化剂的光电性能,促进载流子的高效分离并拓宽其可见光的响应范围,促进光催化反应高效进行。最后,阐述和总结了稀土元素改性对于半导体光催化剂活性改善的重要意义并进行了展望。Photocatalysis is an environmental protection method that can utilize solar energy for energy conversion and environmental governance.Among them,catalysts play a crucial role as an important part of photocatalysis.At present,the most commonly used catalysts are still traditional semiconductor catalysts,which have good environmental adaptability and stability,the large specific surface area and excellent photocatalytic intrinsic activity to ensure their excellent catalytic activity.Meanwhile,semiconductor photocatalysts have lower production costs and abundant reserves of raw materials on Earth,which also ensures their larger production volume and lower production costs.However,the bandgap of semiconductor catalysts is generally wide,which leads to high carrier recombination rate and insufficient visible light response,thereby limiting the efficient photocatalytic reaction.Rare earth elements,as dopants,have unique charge control mechanisms and optical modification mechanisms in photocatalysis,which can effectively enhance the photocatalytic activity of traditional semiconductors.Rare earth elements are a collective term for a total of 17 elements,including 15 lanthanide elements and scandium(Sc)and yttrium(Y),which have similar chemical properties to lanthanide elements.China is a major country in rare earth resources,with reserves of around 44 million tons,accounting for approximately 34%of the global rare earth reserves and ranking first in the world.Nowadays,rare earth elements have been widely used in metallurgy,chemical industry,aerospace transportation,and military fields,demonstrating their significant application value.They also have profound research significance in the field of photocatalysis industry,such as photocatalytic degradation of industrial printing and dyeing wastewater,reduction of CO2,preparation of hydrogen and oxygen from photocatalytic water splitting,etc.This article mainly introduces the regulation of rare earth element doping on the performance of semiconductor photocatalysts from the

关 键 词：稀土元素 光催化 半导体光催化剂 光催化机理 

分 类 号：O649.4[理学—物理化学]