Bi/Yb^3+,Er^3+∶TiO2复合纳米纤维的合成及光催化产氢性能  

Preparation and Photocatalytic Hydrogen Production of Bi/Yb^3+,Er^3+∶TiO2 Nanofibers

作　　者：赵晓波 李跃军 曹铁平 孙大伟 ZHAO Xiao-Bo;LI Yue-Jun;CAO Tie-Ping;SUN Da-Wei(College of Chemistry,Baicheng Normal University,Baicheng,Jilin 137000,China;College of Chemistry,Jilin Normal University,Siping,Jilin 136000,China)

机构地区：[1]白城师范学院化学学院,白城137000 [2]吉林师范大学化学学院,四平136000

出　　处：《无机化学学报》2020年第8期1535-1542,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21573003);国家级大学生创新创业训练计划项目(No.201810206003)资助。

摘　　要：以静电纺丝技术制备的稀土Yb3+和Er3+共掺杂TiO2纳米纤维为基质,结合水热法合成了Bi复合Yb3+,Er3+∶TiO2纳米纤维光催化剂。以三乙醇胺为牺牲剂,研究了Bi/Yb3+,Er3+∶TiO2的紫外、可见、近红外和全谱光催化产氢性能。结果表明:全谱光照5 h,产氢速率达到1650.3μmol·g-1·h-1。Bi作为一种新兴的非贵金属具有独特的等离子体光催化或辅助光催化性能,能与稀土元素丰富的能级结构和特殊的上转换发光特性相结合。对TiO2进行双重协同修饰改性,可以有效提高TiO2纳米纤维的光催化活性。Bi deposited Yb3+,Er3+codped TiO2 nanofiber photocatalysts were synthesized from Yb3+and Er3+co-doped TiO2 substrate by combining electrospinning technique and hydrothermal method.Using triethanolamine as a sacrificial agent,we studied the ultraviolet,visible,near infrared and full spectrum photocatalytic hydrogen produc-tion over Bi/Yb3+,Er3+∶TiO2.The results showed that the full-spectrum illumination for 5 h resulted in a hydrogen production rate of 1650.3μmol·g-1·h-1.As an emerging non-noble metal,Bi displays unique plasma photocatalytic or assisted photocatalytic properties.The advantages of Bi metal can be further combined with a rich energy level structure of rare earth elements and unique up-conversion luminescence properties.The double synergistic modifi-cation of TiO2 can effectively improve the photocatalytic activity of TiO2 nanofibers.

关 键 词：金属Bi YB^3+ Er^3+∶TiO2纳米纤维 水热合成 光催化 

分 类 号：O643.36[理学—物理化学]