Water promoted photocatalytic transfer hydrogenation of furfural to furfural alcohol over ultralow loading metal supported on TiO_(2)

作     者：Shuang Lv Huifang Liu Jian Zhang Qiang Wu Feng Wang Shuang Lv;Huifang Liu;Jian Zhang;Qiang Wu;Feng Wang

作者机构：Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric PowerShanghai University of Electric PowerShanghai 200090China State Key Laboratory of CatalysisDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina 

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

年 卷 期：2022年第31卷第10期

页      面：259-267,I0006页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 080703[工学-动力机械及工程] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the Ministry of Science and Technology of the People’s Republic of China, China (2018YFE0118100) the National Natural Science Foundation of China, China (21905275, 22025206, 21721004, 21991090) the Liaoning Revitalization Talents Program, China (XLYC2002012) the Joint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy, China (Grant. YLU-DNL Fund 2021019) the CAS-NSTDA Joint Research Project, China (GJHZ2075) Dalian Institute of Chemical Physics, CAS, China (Grant: DICP I202131) the Science and Technology Commission of Shanghai Municipality, China (19DZ2271100) support of the Liaoning Key Laboratory of Biomass Conversion for Energy and Material 

主　　题：Furfural Photocatalysis Transfer hydrogenation Furfural alcohol Selectivity control 

摘      要：Photocatalytic hydrogenation of furfural offers an ideal method for selective biomass upgrading into value-added chemicals or fuel additives under mild conditions. However, it is still challenging to control the product selectivity due to side reactions of functional groups and reactive radical ***, photocatalytic transfer hydrogenation of furfural was studied using the TiO_(2)-based photocatalysts with alcohols as both the solvent and hydrogen donor. Ultralow loading metal supported on TiO_(2),together with adding a small amount of water in the system, were demonstrated to greatly increase the selectivity of furfuryl alcohol product. Electron paramagnetic resonance(EPR), ultraviolet-visible spectroscopy(UV-Vis) and photoluminescence(PL) measurements gave evidence that ultralow loading Pt or Pd on TiO_(2)increase the oxygen vacancy concentration and the photogenerated charge separation efficiency, which accelerates the photocatalytic reduction of furfural. In situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS) and mechanistic studies confirmed that photogenerated holes and electrons are active species, with dissociatively adsorbed methanol being directly oxidized by holes,furfural hydrogenated by protons and electrons and H_(2)O modifying the intermediate diffusion which contributes to high selectivity of furfuryl alcohol. This work demonstrates a simple approach to design photocatalysts and tune product selectivity in biomass valorization.