RuFe纳米粒子修饰片状BiVO4协同催化氨硼烷水解产氢  

RuFe Nanoparticles Modified Sheet-like BiVO4:High-efficient Synergistic Catalyst for Ammonia Borane Hydrolytic Dehydrogenation

作　　者：张翊青 张淑娟 万正睿 莫晗 王念贵[1] 周立群[1] ZHANG Yiqing;ZHANG Shujuan;WAN Zhengrui;MO Han;WANG Niangui;ZHOU Liqun(Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules,Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials,College of Chemistry and Chemical Engineering,Hubei University,Wuhan 430062,China)

机构地区：[1]湖北大学化学化工学院,有机化工新材料湖北省协同创新中心,有机功能分子合成与应用教育部重点实验室,武汉430062

出　　处：《无机材料学报》2020年第7期809-816,共8页Journal of Inorganic Materials

基　　金：湖北省自然科学基金(2010CDB04701);有机功能分子合成与应用教育部重点实验室项目(KLSAOFM1913)。

摘　　要：开发高效廉价的催化剂对于清洁能源经济至关重要,将氨硼烷的催化水解用于氢能源开发前景广阔。本工作首先采用简单回流法制备BiVO4纳米片,再通过浸渍还原法制备出Ru/Fe不同摩尔比的RuFe@BiVO4催化剂,并在室温下用于催化氨硼烷水解产氢。通过比较载体BiVO4、Ru@BiVO4、Fe@BiVO4、RuFe@BiVO4以及无载体的RuFe纳米粒子的催化产氢速率发现,在所有的催化剂中,Ru1Fe0.1@BiVO4具有最高的催化活性,非贵金属Fe能显著增强Ru的催化性能,这与RuFe之间强的电子效应以及RuFe纳米粒子与载体BiVO4间的双功能效应密切相关,其活化能(Ea)为43.7 kJ·mol^-1,转化频率(TOF)为205.4 molH2·molRu·min^-1。Developing highly efficient and low-cost catalysts is crucial in the field of clean energy economy,in which ammonia borane(AB)has attracted great attention due to its high hydrogen production through the catalytic hydrolysis.In this work,BiVO4 nanosheet was firstly synthesized by a facile reflux method.And then bimetallic RuFe@BiVO4 catalysts with different molar ratios of Ru/Fe were prepared via in situ impregnation-reduction techniques and their catalytic activities were also tested in the hydrogen generation from aqueous solution of AB at room temperature.Compared with the releasing hydrogen rates of catalysts of BiVO4,Ru@BiVO4,Fe@BiVO4,RuFe NPs and RuFe@BiVO4,respectively,Ru1Fe0.1@BiVO4 exhibits the highest catalytic activity for the dehydrogenation of AB among all catalysts,the activation energy(Ea)and turnover frequency(TOF)are 43.7 kJ×mol^–1 and 205.4 molH2•molRu•min^–1,respectively.The addition of non-noble Fe can significantly enhance the catalytic activity of Ru counterparts,which is closely related to the strong electronic effect between Ru and Fe NPs,bi-functional effect generated between the RuFe NPs and the support BiVO4.

关 键 词：钒酸铋 RuFe纳米粒子 协同催化 氨硼烷 产氢 

分 类 号：O643[理学—物理化学]