Carbon quantum dots modified TiO_(2) composites for hydrogen production and selective glucose photoreforming

作     者：Heng Zhao Xinti Yu Chao-Fan Li Wenbei Yu Aiguo Wang Zhi-Yi Hu Steve Larter Yu Li Md Golam Kibria Jinguang Hu Heng Zhao;Xinti Yu;Chao-Fan Li;Wenbei Yu;Aiguo Wang;Zhi-Yi Hu;Steve Larter;Yu Li;Md Golam Kibria;Jinguang Hu

作者机构：Department of Chemical and Petroleum EngineeringUniversity of Calgary2500 University DriveNWCalgaryAlberta T2N 1N4Canada State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070HubeiChina Nanostructure Research CentreWuhan University of Technology.Wuhan 430070Hubei.China Department of GeosciencesUniversity of Calgary2500 University DriveNWCalgaryAlberta T2N 1N4Canada 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第1期

页      面：201-208,I0006页

核心收录：

学科分类：081702[工学-化学工艺] 080703[工学-动力机械及工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Canada First Research Excellence Fund (CFREF) National Key R&D Program of China (2016YFA0202602) 

主　　题：CQDs Size regulation Hydrogen production Glucose photoreforming Arabinose 

摘      要：Lignocellulosic biomass photoreforming is a promising and alternative strategy for both sustainable H_(2) production and biomass valorization with infinite solar ***,harsh reaction conditions(high alkalinity or toxic organic solvents),with low biomass conversion and selectivity are often reported in *** this work,we report glucose photoreforming for coproduction of H_(2) and arabinose with improved selectivity under neutral condition using carbon quantum dots(CQDs)modified TiO_(2) *** show that the conventional CQDs fabricated by a facile one-step hydrothermal process could be endowed with novel color changing property,due to the particle aggregation under the regulation of incident *** as-fabricated CQDs/TiO_(2) composites with certain colored CQDs could greatly improve glucose to arabinose conversion selectivity(-75%)together with efficient hydrogen evolution(up to 2.43 mmolh^(-1)g^(-1))in *** arabinose is produced via the direct C1-C2 α-scissions mechanism with reactive oxygen species of·O_(2)^(-) and·OH,as evidenced by ^(13)C labeled glucose and the electron spin-resonance(ESR)studies,*** work not only sheds new lights on CQDs assisted photobiorefinery for biomass valorization and H_(2) coproduction,but also opens the door for rationale design of different colored CQDs and their potential applications for solar energy utilization in the noble-metal-free system.