Unilamellar MnO_(2)nanosheets confined Ru-clusters combined with pulse electrocatalysis for biomass electrooxidation in neutral electrolytes  

单层MnO_(2)纳米片限域的Ru团簇结合电化学脉冲用于中性电解质中生物质电氧化

作　　者：Yuanqing He Chongyang Ma Shiheng Mo Chung-Li Dong Wei Chen Shuo Chen Huan Pang Renzhi Ma Shuangyin Wang Yuqin Zou 何元卿;马重阳;莫世恒;Chung-Li Dong;陈威;陈硕;庞欢;马仁志;王双印;邹雨芹

机构地区：[1]School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225009,China [2]State Key Laboratory of Chem/Bio-Sensing and Chemometrics,Advanced Catalytic Engineering Research Center of the Ministry of Education,College of Chemistry and Chemical Engineering,The National Supercomputer Centers in Changsha,Hunan University,Changsha 410082,China [3]Department of Physics,Tamkang University,New Taipei City 25137,China [4]School of Materials Science and Engineering,Central South University,Changsha 410083,China [5]International Research Center for Materials Nanoarchitectonics(WPI-MANA),National Institute for Materials Science(NIMS),Tsukuba,Ibaraki 305-0044,Japan

出　　处：《Science Bulletin》2025年第2期193-202,共10页科学通报(英文版)

基　　金：supported by the National Key R&D Program of China(2022YFA1504200);the National Natural Science Foundation of China(22122901);the Provincial Natural Science Foundation of Hunan(2021JC0008,2021JJ20024,and 2021RC3054);the Jiangsu Province Excellent Postdoctoral Program(2022ZB615)。

摘　　要：The electrochemical oxidation of 5-hydroxymethylfurfural(HMFOR)in alkaline electrolyte is a promising strategy for producing high-value chemicals from biomass derivatives.However,the disproportionation of aldehyde groups under strong alkaline conditions and the polymerization of HMF to form humic substances can impact the purity of 2,5-furandicarboxylic acid(FDCA)products.The use of neutral electrolytes offers an alternative environment for electrolysis,but the lack of OH^(-)ions in the electrolyte often leads to low current density and low yields of FDCA.In this study,a sandwich-structured catalyst,consisting of Ru clusters confined between unilamellar MnO_(2)nanosheets(S-Ru/MnO_(2)),was used in conjunction with an electrochemical pulse method to realize the electrochemical conversion of5-hydroxymethylfurfural into FDCA in neutral electrolytes.Pulse electrolysis and the strong electron transfer between Ru clusters and MnO_(2)nanosheets help maintain Ru in a low oxidation state,ensuring high activity.The increased*OH generation led to a groundbreaking current density of 47 mA/cm^(2)at1.55 V vs.reversible hydrogen electrode(RHE)and an outstanding yield rate of 98.7%for FDCA in a neutral electrolyte.This work provides a strategy that combines electrocatalyst design with an electrolysis technique to achieve remarkable performance in neutral HMFOR.

关 键 词：Electrocatalytic 5-hydroxymethylfurfural oxidation Neutral electrolyte ELECTROCATALYSTS Nano-confined structure Electrochemical pulse 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O643.36[理学—物理化学]