In Situ Exfoliation and Pt Deposition of Antimonene for Formic Acid Oxidation via a Predominant Dehydrogenation Pathway
作者机构：State Key Laboratory of Chemo/Bio-Sensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Jiangsu Collaborative Innovation Centre of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjingChina Department of PhysicsTamkang UniversityTamsui 25137Taiwan
出 版 物：《Research》 (研究（英文）)
年 卷 期：2020年第2020卷第1期
页 面：891-901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：The authors acknowledge the support received from the National Natural Science Foundation of China(Grant Nos.21573066 and 21825201) the Provincial Natural Science Foundation of Hunan(Grant Nos.2016JJ1006 and 2016TP1009)
摘 要：Direct formic acid fuel cell(DFAFC)has been considered as a promising energy conversion device for stationary and mobile *** platinum(Pt)electrocatalysts for formic acid oxidation reaction(FAOR)are critical for ***,the oxidation of formic acid on Pt catalysts often occurs via a dual pathway mechanism,which hinders the catalytic activity owing to the CO ***,we directly exfoliate bulk antimony to 2D antimonene(Sb)and in situ load Pt nanoparticles onto antimonene sheets with the assistance of *** to the Bader charge analysis,the charge transfer from antimonene to Pt occurs,confirming the electronic interaction between Pt and ***,antimonene,as a cocatalyst,alters the oxidation pathway for FAOR over Pt catalyst and makes FAOR follow the more efficient dehydrogenation *** density functional theory(DFT)calculation demonstrates that antimonene can activate Pt to be a lower oxidative state and facilitate the oxidation of HCOOH into CO_(2) via a direct pathway,resulting in a weakened intermediate binding strength and better CO tolerance for *** specific activity of FAOR on Pt/Sb is 4.5 times,and the mass activity is 2.6 times higher than the conventional Pt/C.
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