Carbon-based nanoarrays embedded with Ce-doped ultrasmall Co_(2)P nanoparticles enable efficient electrooxidation of 5-hydroxymethylfurfural coupled with hydrogen production

作     者：Shangfang Xie Hongchuan Fu Liyu Chen Yingwei Li Kui Shen Shangfang Xie;Hongchuan Fu;Liyu Chen;Yingwei Li;Kui Shen

作者机构：Guangdong Provincial Key Laboratory of Fuel Cell TechnologySchool of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2023年第66卷第7期

页      面：2141-2152页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported from the Natural Science Foundation of Guangdong Province(2023B1515040005) the State Key Laboratory of Pulp and Paper Engineering(2022PY05) the National Natural Science Foundation of China(22138003,21825802) 

主　　题：ultrasmall Co_(2)P nanoparticles Ce doping nanosheet arrays 5-hydroxymethylfurfural electrooxidation hydrogen evolution reaction 

摘      要：The electrooxidation of 5-hydroxymethylfurfural(HMFOR)not only offers a green route to attain high-value 2,5-furandicarboxylic acid(FDCA)from biomass,but also is considered as a promising approach to replace the kinetically sluggish OER for future hydrogen ***,we report the construction and structural optimization of Ce-doped ultrasmall Co_(2)P nanoparticles(NPs)in carbon-based nanoarrays to boost HER-coupled *** demonstrate that the electronic structure of Co-based electrocatalysts can be positively regulated by Ce doping and the optimized Ce-Co_(2)P-based electrocatalyst only require a low voltage of 1.20 V *** to achieve 10 m A cm^(-2)for HMFOR with an excellent FDCA Faraday efficiency(FEFDCA)of 98.5%,which are superior to its Ce-free counterpart(1.29 V ***;FEFDCA=83.9%).When being assembled into a HERcoupled HMFOR system,this bifunctional electrocatalyst can achieve 50 m A cm^(-2)with an ultralow voltage of 1.46 V,which is reduced by 210 m Vas compared with that of its Ce-free counterpart(1.67 V).Quasi-operando experiments and DFTcalculations further reveal the significant roles of Ce doping in promoting the charge transfer between active sites and HMF,and reducing the free energy barrier of intermediate(^(*)HMFCA)*** study provides new insights into the underlying mechanisms of Ce doping into metal phosphides for boosting HER-coupled HMFOR,developing a facile methodology to construct efficient electrocatalysts for energy storage/conversion systems.