钐掺杂钛酸铋的制备及其可见光催化性能的研究  

Synthesis of samarium-doped bismuth titanate and its photocatalytic properties under visible light

作　　者：王雅苹 朱冰彦 李红亮 张涵[3] 燕启社[3] WANG Ya-ping;ZHU Bing-yan;LI Hong-liang;ZHANG Han;YAN Qi-she(School of Chemistry and Chemical Engineering,Zhengzhou Normal University,Zhengzhou 450044,China;Xinxiang Ecology and Environmental Monitoring Center of Henan Province,Xinxiang 453007,China;School of Chemistry,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州师范学院化学化工学院,河南郑州450044 [2]河南省新乡生态环境监测中心,河南新乡453007 [3]郑州大学化学学院,河南郑州450001

出　　处：《化学研究与应用》2024年第7期1466-1471,共6页Chemical Research and Application

基　　金：河南省科技攻关项目(222102320190)资助;郑州师范学院本科教学改革研究项目(JXGGYB-221933)资助;郑州师范学院大学生创新性实验计划项目(DCY2022012)资助。

摘　　要：以Ti(OBu)_(4)、Bi(NO_(3))_(3)和Sm(NO_(3))_(3)为原料,通过水热法制备了Sm掺杂的纳米片组装的花状结构Sm-Bi_(4)Ti_(3)O_(12)。利用XRD、SEM和UV-Vis DRS等方法对制备材料的结构和性能进行表征,并以四环素为目标降解物,考察了材料的可见光催化性能和降解过程中的活性物质。结果表明:Sm掺杂增强了Bi_(4)Ti_(3)O_(12)对可见光的吸收能力,带隙变小;Sm-Bi_(4)Ti_(3)O_(12)的光催化降解性能提高,·OH在降解过程中发挥主要作用。Samarium doped bismuth titanate nanoflowers were synthesized by a one-step hydrothermal process using Ti(OBu)_(4)、Bi(NO_(3))_(3)和Sm(NO_(3))_(3)as raw materials.The structure and properties of the photocatalysts were characterized by means of SEM,XRD and UV-Vis DRS.The visible light catalytic properties of Sm-Bi_(4)Ti_(3)O_(12) and the active substances in the degradation process were investigated with tetracycline as the target degradation material.The results demonstrated that Sm doping enhanced the absorption capacity of Bi_(4)Ti_(3)O_(12) for visible light,and the band gap became smaller.The photocatalytic degradation performance of Sm-Bi,Ti,Oi2 was improved,and:OH played a major role in the degradation process.

关 键 词：钐掺杂 钛酸铋 光催化降解 四环素 

分 类 号：O614.1[理学—无机化学]