High-valance molybdenum doped Co_(3)O_(4) nanowires:Origin of the superior activity for 5-hydroxymethyl-furfural oxidation

作     者：Bingying Xia Guangjin Wang Shasha Cui Jinyu Guo Hong Xu Zhijuan Liu Shuang-Quan Zang Bingying Xia;Guangjin Wang;Shasha Cui;Jinyu Guo;Hong Xu;Zhijuan Liu;Shuang-Quan Zang

作者机构：Henan Key Laboratory of Crystalline Molecular Functional MaterialsHenan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhouUniversityZhengzhou 450001China School of Materials Science and Energy EngineeringFoshan UniversityFoshan 528000China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2023年第34卷第7期

页      面：384-389页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by National Natural Science Foundation of China (Nos. 92061201, 21825106, 22102155 and 32072304) the China Postdoctoral Science Foundation (Nos. 2021M692909 and 2022T150587) the Program for Innovative Research Team (in Science and Technology) in Universities of Henan Province and Zhengzhou University (No. 19IRSTHN022) the Key Scientific and Technological Project of Henan Province (No. 2021102210027)。 

主　　题：Spinel Co_(3)O_(4) High-valance Mo^(6+)-doping Electronic structure Adsorption ability 5-Hydroxymethyl-furfural oxidation 

摘      要：Co_(3)O_(4) has been widely explored in electrocatalytic 5-hydroxymethyl-furfural(HMF) oxidation. However,the poor intrinsic ability has seriously limited its electrochemical ability. Heteroatom-doping is an efficient method to enhance the electrocatalytic ability of catalyst by regulating electronic structure. Herein,we have modulated the electronic structure of Co_(3)O_(4) by high valance Mo^(6+)-doping. With the introduction of Mo^(6+), the content of Co^(2+) was increased and metal-oxygen bond was strength. Electrochemical results suggested that the electrocatalytic ability of Co_(3)O_(4) towards HMF oxidation has been dramatically improved and reaction kinetics has been fasten. Theoretical calculations demonstrated that the surrounding cobalt sites after Mo^(6+)-doping with assembled electron has a strong adsorption ability towards HMF molecule leading to more favourable oxidation of HMF. Post characterizations demonstrated pristine Co_(3)O_(4) structure was kept after electrolysis cycles and CoOOH active species were formed. This work provides a valuable reference for developing efficient heteroatom-doped electrocatalysts for HMF oxidation.