Modulating reaction pathways of formic acid oxidation for optimized electrocatalytic performance of PtAu/CoNC

作     者：Mengchao Liang Tianyu Xia Han Gao Kai Zhao Tianqi Cao Meng Deng Xiaoyan Ren Shunfang Li Haizhong Guo Rongming Wang Mengchao Liang;Tianyu Xia;Han Gao;Kai Zhao;Tianqi Cao;Meng Deng;Xiaoyan Ren;Shunfang Li;Haizhong Guo;Rongming Wang

作者机构：Key Laboratory of Material PhysicsMinistry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China Collaborative Innovation Center of Light Manipulations and ApplicationsShandong Normal UniversityJinanShandong 250358China Beijing Advanced Innovation Center for Materials Genome EngineeringBeijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceSchool of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第2期

页      面：1221-1229页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：support from the National Natural Science Foundation of China(Nos.51801188,12034002,and 51971025) the China Postdoctoral Science Foundation(No.2018M632792) program for the Innovation Team of Science and Technology in University of Henan(No.20IRTSTHN014) Excellent Youth Foundation of Henan Scientific Committee(No.202300410356) the CAS Interdisciplinary Innovation Team(No.JCTD-2019-01) Beijing Natural Science Foundation(No.2204085) 

主　　题：formic acid oxidation direct oxidation pathway metal organic framework co-doping CO binding energy 

摘      要：Formic acid oxidation(FAO)is a typical anode reaction in fuel cells that can be facilitated by modulating its direct and indirect reaction ***,PtAu bimetallic nanoparticles loaded onto Co and N co-doping carbon nanoframes(CoNC NFs)were designed to improve the selectivity of the direct reaction pathway for efficient *** on these subtle nanomaterials,the influences of elemental composition and carbon-support materials on the two pathways of FAO were investigated in *** results of fuel cell tests verified that the appropriate amount of Au in PtAu/CoNC can promote a direct reaction pathway for FAO,which is crucial for enhancing the oxidation efficiency of formic *** particular,the obtained PtAu/CoNC with an optimal Pt/Au atomic ratio of 1:1(PtAu/CoNC-3)manifests the best catalytic performance among the analogous obtained Pt-based *** FAO mass activity of the PtAu/CoNC-3 sample reached 0.88 A·mg_(Pt)^(-1),which is 26.0 times higher than that of Pt/*** results of first-principles calculation and CO stripping jointly demonstrate that the CO adsorption of PtAu/CoNC is considerably lower than that of Pt/CoNC and PtAu/C,which indicates that the synergistic effect of Pt,Au,and CoNC NFs is critical for the resistance of Pt to CO *** work is of great significance for a deeper understanding of the oxidation mechanism of formic acid and provides a feasible and promising strategy for enhancing the catalytic performance of the catalyst by improving the direct reaction pathway for FAO.