碳元素掺杂CdS/TiO2复合光催化剂的制备及表征  

The Preparation and Characterization of CdS/C-TiO2 Composite Photocatalysts

作　　者：樊慧娟[1] 曹先启[1] 王晶[1,2] 张惠[1,2] 单雯妍[1] 张雪[1] 李胜[1,2] 谭蕾[1,2] 杨艳晶 FAN Hui-juan;CAO Xian-qi;WANG Jing;ZHANG Hui;SHAN Wen-yan;ZHANG Xue;LI Sheng;TAN Lei;YANG Yan-jing(Institute of Petrochemistry,Heilongjiang Academy of Sciences,Harbin 150040,China;Institute of)

机构地区：[1]黑龙江省科学院石油化学研究院,黑龙江哈尔滨150040 [2]黑龙江省科学院高技术研究院,黑龙江哈尔滨150020

出　　处：《化学与粘合》2019年第6期460-463,共4页Chemistry and Adhesion

摘　　要：以柠檬酸(CA)和TiO2-P25为原料,经浸渍-焙烧制备出C-TiO2,再经水热法合成出CdS/C-TiO2复合光催化剂。催化剂的分析表征结果表明,C取代了TiO2晶格中的Ti原子,形成了Ti-O-C的结构;掺杂C后,晶型未发生变化,电荷分离效率提高,TiO2的吸收边发生红移。可见光催化分解硫化氢制氢结果表明,CdS/C-TiO2催化性能明显改善,产氢速率可达10291.7μmol/(h g),高于未掺杂改性的CdS/TiO2。The C doping TiO2 is obtained by the impregnation-calcination method with citric acid(CA)and TiO2-P25 as raw materials,and then the CdS/C-TiO2 composite photocatalysts is prepared by hydrothermal method.The results of analysis and characterization show that the C substitutes for partial Ti atoms in the lattice of TiO2 and a Ti-O-C structure is formed.It is indicated from the photocatalytic decomposition of H2S to produce H2 over the above photocatalysts that the photocatalytic properties of CdS/C-TiO2 composite photocatalysts is evidently improved as a result of a noticeable shift to visible region and the enhancement of the charge separation efficiency.The H2 evolution rates reaches 10291.7μmol/(h·g)over CdS/CTiO2 which is higher than that over CdS/TiO2.

关 键 词：柠檬酸 浸渍-焙烧 复合光催化剂 硫化氢 产氢速率 

分 类 号：O643.36[理学—物理化学]