Enhanced Photothermal Selective Conversion of CO_(2)to CH4 in Water Vapor over Rod-Like Cu and N Co-Doped TiO_(2)  

作　　者：Ji-Chao Wang Xiu Qiao Weina Shi Huiling Gao Lingchen Guo 

机构地区：[1]College of Chemistry and Chemical Engineering,Henan Institute of Science and Technology,Xinxiang 453000,China [2]School of Chemistry and Materials Engineering,Xinxiang University,Xinxiang 453000,China [3]School of Ecology and Environment,Zhengzhou University,Zhengzhou 450052,China

出　　处：《Chinese Journal of Structural Chemistry》2022年第12期33-42,共10页结构化学（英文）

基　　金：National Natural Science Foundation of China(No.51802082);Key Scientific and Technological Project of Henan Province(No.222102320100);Program for Science&Technology Innovation Talents in Universities of Henan Province(No.21HATIT016).

摘　　要：Enhancing catalytic efficiency and selectivity is critical issues for CO_(2) conversion.The rod-like Cu/N co-doped TiO_(2) samples(Cu/N-TiO_(2)) were synthesized by the electrospinning-calcination method.The substitutional Cu and interstitial N doping not only enhanced visible-light absorption ability,but also formed the Ti(Ⅲ)sites.The obviously synergistic effect between the photocatalysis and thermalcatalysis appeared for CO_(2) conversion over the 8-Cu/N-TiO_(2) catalyst.After 9 h visible-light-illumination at 160℃,the CO,CH4and O_(2) yields reached 49.7,1455.1 and 2910.2μmol/gcat,respectively.In the 7thcycling,the yields of two main CH4and O_(2) products were slightly down by less than 11.5%,and the selectivity of CH_(4) product kept above 98%.Combined with the theoretical surface mode,Cu/N co-doping could promote the adsorption-ability for H_(2)O and CO_(2) molecules and reduce activation-energy for CO_(2)conversion.Hence,the co-doping construction showed a great significance of designing efficient photothermal catalysts for the CO_(2)conversion application.

关 键 词：CO_(2)conversion photothermal catalysis ROD-LIKE TiO_(2) CO-DOPED 

分 类 号：X701[环境科学与工程—环境工程] TQ426[化学工程]