稀土改性ZnO应用及研究进展  

Application and Research Progress of Rare Earth Modified ZnO

作　　者：唐洋洋 李林波[2] 王超[2] 杨潘[1] 杨柳 Tang Yangyang;Li Linbo;Wang Chao;Yang Pan;Yang Liu(Huciqing College,Xi'an University of Architecture and Technology,Xi'an 710045,China;College of Metallurgical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]西安建筑科技大学华清学院,陕西西安710055 [2]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《中国稀土学报》2021年第5期698-710,共13页Journal of the Chinese Society of Rare Earths

基　　金：陕西省科技统筹创新工程计划项目(2011KTDZ01-04-01);陕西省2019专项科研计划项目(19JK0490);西安建筑科技大学华清学院2020年度专项科研计划项目(20KY02)资助。

摘　　要：ZnO具有光催化活性、强光敏性等优点被广泛关注,但是ZnO使用中存在诸多局限性,如宽禁带、不可吸收可见光、光催化效率降低等。稀土元素加入ZnO中可改变改善ZnO的电导率、光学、发光、磁性等物理性质,重点阐述了稀土掺杂ZnO材料应用现状,包括磁半导体、太阳能电池、气体传感器、发光材料、光催化剂和生物系统等。综述不同稀土元素修饰改性ZnO研究进展并给出相关建议,La掺杂ZnO可将光吸收范围拓宽到可见光区域,非均相半导体-离子复合材料有望实现多功能光催化剂的制备;Ce掺杂ZnO应深入机制研究或采用共掺杂等工艺提高光催化活性;掺Er的ZnO纳米管通过刺激Er离子的特征辐射制备绿色发光二极管;Sm可敏化材料的光致发光性,掺Sm的ZnO具有优异的性能,未来应扩大Sm应用领域并提高稀土利用率;Nd掺杂ZnO的研究应集中在铁磁性及抗菌活性,并进一步表征反应机制;开发应用于氢能和环境减排的高性能光催化剂、气体传感器或太阳能电池、薄膜晶体管等光电器件;建立性能设计和组装的数据库,降低成本并实现工业化生产。ZnO has the advantages of photocatalytic activity,strong photosensitivity.However,there are many limitations in the application of ZnO,such as wide bandgap,without absorption of visible light,photocatalytic efficiency,etc.Adding rare earth elements in ZnO can improve the ZnO physical properties such as conductivity,optics,luminescence and magnetism.This paper expounds the application status of rare earth elements doped ZnO materials,including magnetic semiconductors,solar cells,gas sensors,luminous materials,photocatalysts and biological systems.The research progress of ZnO modified by different rare earth elements is reviewed and some suggestions are given.La doped ZnO can expand the range of light absorption to the visible region,and heterogeneous semiconductor-ion composites are expected to realize the preparation of multifunctional photocatalysts.The mechanism of doped ZnO with Ce should be further studied or the photocatalytic activity should be improved by co-doping.With Er doped ZnO nanotubes,green light-emitting diodes were prepared by stimulating the characteristic radiation of Er ions.Sm can sensitize the photoluminescence of materials,and Sm doped ZnO has excellent performance.In the future,the application field of Sm should be expanded and the utilization of rare earth should be improved.The research of Nd doped ZnO should focus on its ferromagnetism and antimicrobial activity,and further characterize the reaction mechanism.High performance photocatalysts,gas sensors,solar cells,thin film transistors and other optoelectronic devices are developed for hydrogen energy and environmental emission reduction.We must establish a database of performance design and assembly to reduce the cost and realize industrial production.

关 键 词：稀土 掺杂 ZNO 光催化 太阳能电池 

分 类 号：O643.3[理学—物理化学]