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现代化工  2018, Vol. 38 Issue (6): 93-96    DOI: 10.16606/j.cnki.issn0253-4320.2018.06.021
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
微波辅助合成Ir-Pd双金属三八面体纳米晶及其电催化性能
苏嫚嫚, 唐鸿彬, 付惟楚, 赵燕熹, 黄涛
中南民族大学化学与材料科学学院, 催化材料科学国家民委-教育部重点实验室, 湖北 武汉 430074
Microwave-assisted synthesis of Ir-Pd bimetallic trioctahedral nanocrystals and their electrocatalytic properties
SU Man-man, TANG Hong-bin, FU Wei-chu, ZHAO Yan-xi, HUANG Tao
College of Chemistry & Materials Science, South-Central University for Nationalities, Wuhan 430074, China
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摘要 以Ir(acac)3和H2PdCl4为前驱体,三缩四乙二醇(TEG)为溶剂和还原剂,抗坏血酸(AA)为共还原剂,聚乙烯吡咯烷酮(PVP)为稳定剂,KI为形貌控制剂,微波辐照120 s,得到形貌单一、大小均匀的Ir-Pd双金属三八面体纳米晶。反应体系中Ir(acac)3∶H2PdCl4∶AA∶KI∶PVP最适宜摩尔比为1∶3∶2∶10∶15。利用透射电子显微镜(TEM)、扫描电子显微镜(SEM)、X-射线粉末衍射(XRD)、X-射线光电子能谱(XPS)对其结构进行了表征。所合成的Ir-Pd双金属三八面体纳米晶催化甲酸电氧化的活性约为商业Pd黑的2.5倍。
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苏嫚嫚
唐鸿彬
付惟楚
赵燕熹
黄涛
关键词:      双金属三八面体  微波  纳米晶    
Abstract: Uniform and well-defined Ir-Pd bimetallic trioctahedral nanocrystals with an average size of 50 nm are synthesized by using Ir(acac)3 and H2PdCl4 as precursors,tetraethylene glycol (TEG) as solvent and reduction agent,ascorbic acid (AA) as a co-reduction agent,polyvinylpyrrolidone (PVP) as a stabilizer,KI as a shape-controlled agent under microwave irradiation for 120 s.In the reaction system,the optimum molar ratio of Ir(acac)3∶H2PdCl4∶AA∶KI∶PVP is 1∶3∶2∶10∶15.The products are characterized by transmission electron microscopy (TEM),scanning electron microscope (SEM),X-ray diffraction (XRD) and X-ray photoelectron spectrometry (XPS).The electrocatalytic activity of the as-prepared Ir-Pd bimetallic trioctahedral nanocrystals for electro-oxidation of formic acid is around 2.5 times that of the commercial Pd black.
Key words:  palladium    iridium    bimetallic tri-octahedral    microwave    nanocrystal
收稿日期:  2017-11-30      修回日期:  2018-04-09           出版日期:  2018-06-20
TB383  
基金资助: 国家自然科学基金资助项目(21273289);中央高校基本科研业务费专项资金(ZW15039)
通讯作者:  黄涛(1966-),男,博士,教授,主要从事纳米材料与纳米催化的研究,通讯联系人,huangt208@163.com。    E-mail:  huangt208@163.com
作者简介:  苏嫚嫚(1992-),女,硕士研究生,主要从事纳米材料的研究,1569506871@qq.com
引用本文:    
苏嫚嫚, 唐鸿彬, 付惟楚, 赵燕熹, 黄涛. 微波辅助合成Ir-Pd双金属三八面体纳米晶及其电催化性能[J]. 现代化工, 2018, 38(6): 93-96.
SU Man-man, TANG Hong-bin, FU Wei-chu, ZHAO Yan-xi, HUANG Tao. Microwave-assisted synthesis of Ir-Pd bimetallic trioctahedral nanocrystals and their electrocatalytic properties. Modern Chemical Industry, 2018, 38(6): 93-96.
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http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2018.06.021  或          http://www.xdhg.com.cn/CN/Y2018/V38/I6/93
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