Preparation of Highly Dispersed Nano-platinum by Chemical Reduction
WU Guoyu1,2, ZHENG Ye3, WANG Mingyong2, XING Zhijun3
1 China Gold Group Co., LTD., Beijing 100011, China 2 State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing, Beijing 100083, China 3 Changchun Gold Research Institute Co.,Ltd.,Changchun 130012, China
Abstract: The fuel cells are regarded as a promising candidates for new-generation of automobile power sources, due to their high energy density, conversion efficiency and low environmental pollution. Platinum carbon catalyst is the key material of fuel cell in new energy vehicle, while it has the disadvantages of high cost. In order to reduce the amount of platinum, nano-platinum is an important method to improve the catalytic utilization rate and lower the cost of the catalyst. The highly dispersed nano-platinum was prepared by a liquid phase reduction method and use H2PtCl6·6H2O as a platinum precursor, NaBH4 as reducing agent, polyvinyl pyrrolidone (PVP) as stabilizing agent in ethylene glycol solvent at 25 ℃ for reaction 60 min. The structure, morphology and particles size distribution (PSD) of nano-platinum were analyzed by UV-vis, XRD, TEM and XPS. The mechanism of reaction conditions on nano-platinum was preliminarily explored in preliminarily. The results showed that platinum particles with high dispersed, single morphology, uniform size and the average particle size of 7.53 nm could be prepared by using ethylene glycol as solvent and reducing agent. The nano-platinum of the surface has high Gibbs free energy, through the double effect of sterically hindered and electrostatic repulsion with PVP can be effectively inhibited the nano-platinum aggregation.
作者简介: 吴国玉,中国黄金集团有限公司,博士后。于2019年获得中南大学博士学位。从事冶金材料的制备与性能应用、冶金过程的模拟与优化及燃料电池方面的研究,发表期刊论文和发明专利共10余篇。郑晔,长春黄金研究院有限公司,教授级工程师。东北大学矿物加工工程博士。2014年入选科技部“中青年科技创新领军人才”,2016年入选国家“万人计划”。从事选冶工艺研究及开发工作、新能源材料研究等。发表期刊论文40余篇,发明专利30余项。王明涌,北京科技大学钢铁冶金新技术国家重点实验室教授。博士研究生导师。中科院青年创新促进会会员。主要从事电化学冶金与产品高值化研究工作。主持国家自然科学基金4项,其它国家和企业课题10余项。在Energy Environ Sci、Adv Energy Mater、J Clean Prod、Metal Mater Trans B等主流期刊发表高水平论文110余篇,申请发明专利30余项,已授权14项。邢志军,长春黄金研究院有限公司贵金属材料与应用研究所所长,高级工程师。中南大学冶金物理化学硕士。从事黄金及贵金属冶金和材料研究。获得省部级一等奖1项、二等奖1项,发表期刊论文20余篇、专利10余项。
引用本文:
吴国玉, 郑晔, 王明涌, 邢志军. 化学还原法制备高分散纳米铂粒子[J]. 材料导报, 2021, 35(Z1): 406-410.
WU Guoyu, ZHENG Ye, WANG Mingyong, XING Zhijun. Preparation of Highly Dispersed Nano-platinum by Chemical Reduction. Materials Reports, 2021, 35(Z1): 406-410.
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2021, Vol. 35 
