文献类型：期刊文献

英文题名：Unveiling the Gold Facet Effect in Selective Oxidation of 5-Hydroxymethylfurfural and Hydrogen Production

作者：Qin, Qizhen[1];Li, Tan[5];Sun, Xuehao[2];Pei, An[1];Jia, Yanyan[3];He, Hongpeng[4];Gao, Fan[1];Wang, Peng[1];Wu, Qiqi[1];Liu, Renfeng[1];Dai, Sheng[3];Lin, Haixin[4];Zhang, Qingfeng[2];Zhao, Yun[1];Chen, Guangxu[1]

机构：[1]South China Univ Technol, Sch Environm & Energy, State Key Lab Luminescent Mat & Devices, Guangdong Prov Key Lab Atmospher Environm & Pollut, Guangzhou 510000, Peoples R China;[2]Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200030, Peoples R China;[4]Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China;[5]Kunming Univ Sci & Technol, Fac Chem Engn, Kunming 650500, Yunnan, Peoples R China

年份：2024

卷号：24

期号：51

起止页码：16351

外文期刊名：NANO LETTERS

收录：;EI(收录号：20245017524545);WOS:【SCI-EXPANDED(收录号:WOS:001374989900001)】；

基金：We appreciate the financial support from the National Nature Science Foundation of China (21971070), the Guangdong Innovative and Entrepreneurial Research Team Program (2019ZT08L075), the Guangdong Pearl River Talent Program (2019QN01L159), the Natural Science Foundation of Guangdong Province (2022A1515012047), Science and Technology Program of Guangzhou, China (202103040002 and 202102020306), Program of International Cooperation and Exchange of the Ministry of Science and Technology, China (G20200019024), Guangzhou Basic and Applied Basic Research Program (202102020433), and Yunnan Fundamental Research Projects (202401AU070180).

语种：英文

外文关键词：Facet effect; Gold catalysis; 5-Hydroxymethylfurfuralselective oxidation; Spontaneous reaction

摘要：Direct oxidation of 5-hydroxymethylfurfural (HMF) to 5-hydroxymethyl-2-furancarboxylic acid (HMFCA), crucial for medical supply production, is hindered by overoxidation. We synthesized gold nanomaterials with distinct single-crystal facets, {111} in octahedra (OC), {100} in nanocubes (NCs), and {110} in rhombic dodecahedra (RD), to investigate the facet-dependent HMF oxidation. The Au RD achieved the spontaneous oxidation of HMF to HMFCA with stoichiometric hydrogen production, maintaining 95% carbon balance, 91% yield, and 98% selectivity. In contrast, Au OC and NCs were inert. The superior performance is due to the absence of a C-H activation energy barrier on the Au(110) facet. Furthermore, gas chromatography and isotope experiments supported that the intermediate is oxidized to produce H2 via H- transfer, rather than H2O via H+ transfer. Oxygen was essential for scavenging electrons, thereby closing the reaction loop. The Au RD exhibited remarkable stability, operating for 240 h without performance degradation, indicating its potential for efficient HMFCA production.