Investigation on the coordination mechanism of Pt-containing species and qualification of the alkaline content during Pt/C preparation via a solvothermal polyol method

作     者：Rongrong Zeng Kun Wang Wei Shao Junhang Lai Shuqin Song Yi Wang 曾融蓉;王昆;邵伟;赖俊杭;宋树芹;王毅

作者机构：The Key Laboratory of Low-carbon Chemistry&Energy Conservation of Guangdong ProvinceSchool of Materials Science and EngineeringSchool of Chemical Engineering and TechnologySchool of ChemistrySun Yat-sen UniversityGuangzhou 510275GuangdongChina Department of Chemical EngineeringUniversity of Waterloo200 University Avenue WestWaterlooON N2L 3G1Canada 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第5期

页      面：820-829页

核心收录：

学科分类：0808[工学-电气工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：国家自然科学基金(21576300,21576299,21978331,21975292,21905311) 国家重点研发计划(2016YFB0101204) 广东省高层次人才特殊支持计划项目(2016TQ03N322) 高校基本科研业务费青年教师重点培育项目(17lgzd14,19lgpy136,19lgpy116) 中国博士后科学基金(2019M653142) 

主　　题：Pt/C Oxygen reduction reaction Solvothermal assisted ethylene glycol reduction method Electrocatalytic activity 

摘      要：A solvothermal assisted ethylene glycol reduction method is a common technology for Pt/C catalysts preparation. Here, the coordination mechanism of the Pt-containing species is deeply studied by innovatively adopting the ultraviolet-visible spectroscopy technology and H+ concentration detector. Moreover, the amount of Na OH that effectively coordinates Pt4+ has been tentatively qualified and the heating parameters during the preparation process of Pt/C have also been optimized. As investigated, the optimized 20-(1/22)-140-2 Pt/C(20 wt%Pt;m(Pt):m(Na OH)=1/22;heating temperature: 140 °C, heating time: 2 h) exhibits higher electrocatalytic activity towards oxygen reduction reaction(ORR) than the commercial 20 wt% Pt/C(E-TEK) in acidic media. This work provides a theoretical reserve and technical accumulation for industrialized mass production of highly efficient Pt/C catalysts for ORR in proton exchange membrane fuel cells.