CoPc/TiO_2催化剂的制备及其光催化还原CO_2的研究  

Preparation of CoPc/TiO_2 catalyst and study of the photocatalytic reduction of CO_2

作　　者：赵志换[1] 范济民[1] 王志忠[1] 

机构地区：[1]太原理工大学化学化工学院,山西太原030024

出　　处：《应用化工》2005年第10期632-634,共3页Applied Chemical Industry

摘　　要：以钴酞菁(CoPc)为活性组分,TiO2为载体,采用浸渍法进行负载,制备CoPc/TiO2催化剂。用正交实验得到的最佳催化剂制备条件为:CoPc负载量为TiO2的1.0%,焙烧温度600℃,浸渍时间12 h,溶剂为甲苯。将此催化剂用于CO2还原,在可见光照下,即可将CO2还原为HCOOH、CO、CH4等,其中HCOOH为主产物,产量最高可达450.64μmol/g。另外,实验中还发现了光照下产生电子转移,CoPc变为CoPc.+,而CO2在TiO2表面获得电子被还原。CoPe and TiO2 were used as active component impregnation,and the catalyst of CoPc/TiO2 was obtained and carrier respectively, the loading method is The optimum condition obtained by orthogonal experiment are as follows ： CoPc loading is 1.0% of TiO2, the solution of impregnation is methylbenzene, the impregnation time is 12 h and the temperature of roasting is 600℃ ,this catalyst can photocatalytic reduce CO2. Irradiated under visible light can reduce CO2 to products of HCOOH, CO, CH4 etc. The yield of HCOOH can reach 450. 64 μmol/g, the irradiation leads to transfer of electron and formation of CoPc ^＋. At same time, CO2 can be reduced on the surface of TiO2.

关 键 词：CoPc/TiO2催化剂 光催化 CO2还原 

分 类 号：O643.32[理学—物理化学]