In-situ preparation of TiO_(2)/N-doped graphene hollow sphere photocatalyst with enhanced photocatalytic CO_(2) reduction performance

作     者：Libo Wang Bicheng Zhu Bei Cheng Jianjun Zhang Liuyang Zhang Jiaguo Yu 王立博;朱必成;程蓓;张建军;张留洋;余家国

作者机构：State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070HubeiChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong LaboratoryXianhu Hydrogen ValleyFoshan 528200GuangdongChina Laboratory of Solar FuelFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074HubeiChina School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001HenanChina 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2021年第42卷第10期

页      面：1648-1658页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 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：国家自然科学基金(21905219,51872220,51932007,51961135303,21871217,U1905215,U1705251) 中央高校基本科研业务费专项资金资助(武汉理工大学:2019IVB050) 先进能源科技广东实验室仙湖实验室创新研究基金(XHD2020-001) 

主　　题：Ultrathin N-doped graphene layer Chemical vapor deposition Intimate interfacial contact Photocatalytic CO_(2)reduction Pyridinic N site 

摘      要：Photocatalytic CO_(2)conversion efficiency is hampered by the rapid recombination of photogenerated charge *** is effective to suppress the recombination by constructing cocatalysts on photocatalysts with high-quality interfacial ***,we develop a novel strategy to in-situ grow ultrathin/V-doped graphene(NG)layer on TiO_(2) hollow spheres(HS) with large area and intimate interfacial contact via a chemical vapor deposition(CVD).The optimized TiO^(2)/NG HS nanocomposite achieves total CO_(2)conversion rates(the sum yield of CO,CH_(3)OH and CH_(4))of 18.11μmol·g^(-1)h^(-1),which is about 4.6 times higher than blank T1O_(2)*** results demonstrate that intimate interfacial contact and abundant pyridinic N sites can effectively facilitate photogenerated charge carrier separation and transport,realizing enhanced photocatalytic CO_(2)reduction *** addition,this work provides an effective strategy for in-situ construction of graphene-based photocatalysts for highly efficient photocatalytic CO_(2)conversion.