临界点干燥仪制备的Pt-P25的电催化析氢反应性能探究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (2): 658-663.

所属专题：新型功能材料

临界点干燥仪制备的Pt-P25的电催化析氢反应性能探究

邹函君, 常秋翔, 杨文达, 张斌, 公祥南, 王桂文, 周楷

重庆大学分析测试中心,重庆 400030

收稿日期:2020-09-16 修回日期:2020-12-08 出版日期:2021-02-15 发布日期:2021-03-10
作者简介:邹函君(1989—),女,工程师。主要从事TiO₂及碳材料的电催化性能研究。E-mail:zouhanjun17@cqu.edu.cn
基金资助:
国家自然科学基金青年项目(11904039)

Research on Electrocatalytic Hydrogen Evolution Reaction Performance of Pt-P25 Prepared by Critical Point Drier

ZOU Hanjun, CHANG Qiuxiang, YANG Wenda, ZHANG Bin, GONG Xiangnan, WANG Guiwen, ZHOU Kai

Analytical and Testing Center, Chongqing University, Chongqing 400030, China

Received:2020-09-16 Revised:2020-12-08 Online:2021-02-15 Published:2021-03-10

摘要/Abstract

摘要： 在各种制氢工艺中,电解水是一种获得氢能源的重要途径,Pt是析氢反应(HER)中最理想的催化剂。由于Pt基材料的稀缺性和高成本限制了其大规模应用,因此迫切需要开发一种低含量、高效的铂催化剂。P25是一种晶格缺陷密度很高的混晶型TiO₂,载流子浓度大,具有良好的催化效果。本文采用临界点干燥仪,以商业化混晶TiO₂(P25)为基底,制备了Pt负载的TiO₂(Pt-P25)催化剂,运用XRD、TEM和XPS分析了催化剂的结构和形貌,探索了不同临界点干燥条件下Pt-P25的电催化HER性能。结果表明,临界点干燥法成功制备出了Pt原子簇负载的TiO₂,且在一定的条件下,当二氧化碳进气速率为慢速、交换速率为7、出气加热速率为中速时,Pt-P25的电催化HER性能最好。

关键词: 二氧化钛, 铂催化剂, 电催化, 析氢反应, 临界点干燥

Abstract: Among various hydrogen production processes, electrochemical water splitting is an important way to obtain hydrogen energy, and Pt is the most ideal catalyst for the hydrogen evolution reaction (HER). Nevertheless, large-scale application of Pt-based materials in HER are limited due to their scarcity and high cost, there is an urgent need to develop a low content and efficient platinum catalyst. P25 is a kind of hybrid titanium dioxide with high lattice defect density and high current carrier concentration, which has good catalytic effect. Commercially available mixed crystal TiO₂ (P25) as catalysts supported Pt (Pt-P25) were prepared by a critical point drier, the structure and morphology of catalysts were analyzed by XRD、TEM and XPS, and the electro-catalytic HER performance of Pt-P25 were explored in different critical point drying conditions. The results show that TiO₂ supported Pt atom cluster is successfully prepared by the critical point drying method. Under certain conditions, electro-catalytic HER of Pt-P25 is the best when carbon dioxide intake rate is slow, exchange rate is 7, and outlet gas heating rate is med.

Key words: titanium dioxide, platinum catalyst, electrocatalysis, hydrogen evolution reaction, critical point drying

中图分类号:

O646.51

邹函君, 常秋翔, 杨文达, 张斌, 公祥南, 王桂文, 周楷. 临界点干燥仪制备的Pt-P25的电催化析氢反应性能探究[J]. 硅酸盐通报, 2021, 40(2): 658-663.

ZOU Hanjun, CHANG Qiuxiang, YANG Wenda, ZHANG Bin, GONG Xiangnan, WANG Guiwen, ZHOU Kai. Research on Electrocatalytic Hydrogen Evolution Reaction Performance of Pt-P25 Prepared by Critical Point Drier[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 658-663.

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临界点干燥仪制备的Pt-P25的电催化析氢反应性能探究

Research on Electrocatalytic Hydrogen Evolution Reaction Performance of Pt-P25 Prepared by Critical Point Drier

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