Effect of Acid Treatment on Electrocatalytic Performance of PtNi Catalyst  

作　　者：GUO Ruihua QIAN Fei AN Shengli ZHANG Jieyu CHOU Kuo-Chih YE Jinyu ZHOU Zhiyou 

机构地区：[1]School of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou,014010,P.R.China [2]Inner Mongolia Key Laboratory of Advanced Ceramics and Device,School of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou,014010,P.R.China [3]School of Materials Science and Engineering,Shanghai University,Shanghai,200072,P.R.China [4]Collaborative Innovation Center of Chemistry for Energy Materials,State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen,361005,P.R.China

出　　处：《Chemical Research in Chinese Universities》2021年第3期686-695,共10页高等学校化学研究（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.51864040,51974167);the Natural Science Fund of Inner Mongolia Autonomous Region,China(No.2018LH02006).

摘　　要：In this paper,we describe the synthesis of the AC-PtNi/G catalysts with graphene as the carrier,via the alcohol reduction and the sulfuric acid treatment.The prepared catalysts were microscopically characterized by X-ray diffractometry(XRD),X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM),electron spectroscopy(EDAX),and transmission electron micros-copy(TEM).We tested the electrochemical performance of the prepared catalysts using an electrochemical workstation and in situ infrared spectroscopy(FTIR).The results showed that the acid-treated AC-PtNi/G catalysts had a more uniform dispersion and with the increased of treatment time,the particle size of the catalyst became smaller.And the electrocatalytic performance of the AC-PtNi/G-48h catalyst treated with sulfuric acid for 48 h was significantly better than that of the untreated PtNi/G catalyst.Its electrochemically active surface area was 76.63 m^(2)/g,and the peak current density value for catalytic oxidation of ethanol was 1218.83 A/g,which was 10 times that of ordinary commercial Pt/C catalyst.The steady-state current density value of 1100 s was 358.77 A/g,and it has excellent anti-CO toxicity performance.It was determined that a sulfuric acid treatment controlled catalyst particle size and increased the electrocatalytic activity of the catalytic oxidation of ethanol.

关 键 词：PLATINUM GRAPHENE Acid treatment Particle size Electrocatalytic oxidation 

分 类 号：O64[理学—物理化学]