High-density triple-phase contact points for enhanced photocatalytic CO_(2) reduction to methanol

作     者：Hanwen Jian Kaiming Deng Tongyu Wang Chengxi Huang Fang Wu Hailing Huo Bo Ouyang Xuan Liu Jingjing Ma Erjun Kan Ang Li Hanwen Jian;Kaiming Deng;Tongyu Wang;Chengxi Huang;Fang Wu;Hailing Huo;Bo Ouyang;Xuan Liu;Jingjing Ma;Erjun Kan;Ang Li

作者机构：MIIT Key Laboratory of Semiconductor Microstructure and Quantum SensingSchool of ScienceNanjing University of Science and TechnologyNanjing 210094China College of Information Science and TechnologyNanjing Forestry UniversityNanjing 210037China State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical EngineeringNingxia UniversityYinchuan 750021China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第2期

页      面：252-256页

核心收录：

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：National Natural Science Foundation of China(Nos.22008121,11774173,51790492) the National Outstanding Youth Science Fund Project of National Natural Science Foundation of China(No.T2125004) the Fundamental Research Funds for the Central Universities(Nos.30920032204,30920041115) the Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering(No.2022-K12) Funding of NJUST(No.TSXK2022D002)for financial support 

主　　题：Photocatalysis CO_(2)reduction reaction Photocatalyst Triple-phase contact points Methanol 

摘      要：The efficiency of photocatalytic CO_(2) reduction reaction(PCRR)is restricted by the low solubility and mobility of CO_(2) in water,poor CO_(2) adsorption capacity of catalyst,and competition with hydrogen evolution reaction(HER).Recently,hydrophobic modification of the catalyst surface has been proposed as a potential solution to induce the formation of triple-phase contact points(TPCPs)of CO_(2)(gas phase),H_(2) O(liquid phase),and catalysts(solid phase)near the surface of the catalyst,enabling direct delivery of highly concentrated CO_(2) molecules to the active reaction sites,resulting in higher CO_(2) and lower H+surface *** TPCPs thus act as the ideal reaction points with enhanced PCRR and suppressed ***,the initial synthesis of triple-phase photocatalysts tends to possess a lower bulk density of TPCPs due to the simple structure leading to limited active points and CO_(2) adsorption ***,based on constructing a hydrophobic hierarchical porous TiO_(2)(o-HPT)with interconnected macropores and mesopores structure,we have significantly increased the density of TPCPs in a unit volume of the *** with hydrophobic macroporous TiO_(2)(o-MacPT)or mesoporous TiO_(2)(o-MesPT),the o-HPT with increased TPCP density leads to enhanced photoactivity,enabling a high methanol production rate with 1111.5μmol g^(−1) h^(−1) from *** results emphasize the significance of high-density TPCPs design and propose a potential path for developing efficient PCRR systems.