血晶素负载TiO_2光催化还原CO_2的研究  

Study on Photocatalytic Reduction of CO_2 by Hemin Supported TiO_2

作　　者：郭云超[1] 金靓婕[1] 孙晓伟[1] 李荫[1] 

机构地区：[1]海军航空工程学院,山东烟台264001

出　　处：《当代化工》2018年第1期4-7,共4页Contemporary Chemical Industry

摘　　要：光催化还原CO_2是时下研究的热点课题。建立了一个相对高效、稳定的非均相光催化还原CO_2体系。将血晶素作为助催化剂负载于TiO_2的表面,对比了负载前后TiO_2的晶形变化和血晶素负载量对还原效果的影响,选择合适的溶剂,优化了该体系最佳反应条件。[Ru(bpy)_3]^(2+)作为光敏剂,BIH、TEOA作为牺牲剂,在乙腈溶液中光催化还原CO_2,体系最高TON_(CO)可达832。The photocatalytic reduction of CO_2 is a hot topic of current researches.A relatively efficient and stable heterogeneous photocatalytic CO_2 reduction system was established.The hemin as cocatalyst was supported on the surface of TiO_2.The change of crystal form of TiO_2 before and after the loading was compared,and the effect of hemin loading on the reduction was investigated,appropriate solvent was selected,the reaction conditions of the system were optimized.The results showed that,when [Ru（bpy）_3]^（2＋） was used as photosensitizer,BIH and TEOA were used as sacrificial agent,photocatalytic reduction of CO_2 was realized in the acetonitrile solution,TONCO of the system was up to 832.

关 键 词：光催化 CO2还原 血晶素 TIO2 

分 类 号：O644.1[理学—物理化学]