快速合成廉价CuMo纳米粒子高效催化氨硼烷水解产氢（英文）

发布时间：2018-05-01 02:21

  本文选题：铜 + 氨硼烷　； 参考：《物理化学学报》2017年05期

【摘要】：在无表面活性剂和载体的情况下,使用硼氢化钠作为还原剂,简单快速地合成了Cu Mo非贵金属纳米粒子。采用X射线粉末衍射(XRD)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HRTEM)、选区电子衍射(SAED)、电感耦合等离子体原子发射光谱(ICP-AES)、光电子能谱(XPS)和比表面积分析(BET)等方法详细地表征了所合成的CuMo纳米粒子,并在室温下将其用于催化氨硼烷水解产氢。所合成的Cu0.9Mo0.1纳米粒子对于氨硼烷水解制氢表现出优异的催化性能,在室温下其转化频率(TOF)达到14.9 min~(-1),在已报道的Cu催化剂中处于相对较高的值。这种简单的合成方法不仅仅局限于合成CuMo纳米粒子,还可以扩展到合成CuW(3.6 min~(-1))、CuCr(2 min~(-1))、NiMo(55.6 min~(-1))和CoMo(21.7 min~(-1))纳米粒子,它提供了一种普适的方法合成Cu-M(M=Mo,W,Cr)和TM-Mo(TM=Cu,Ni,Co)纳米粒子作为一系列新型催化剂用于氨硼烷水解。双金属纳米粒子增强的催化活性归因于应力和配体效应诱导的Cu-M纳米粒子的协同促进效果。
[Abstract]:Using sodium borohydride as reducing agent, Cu-Mo non-noble metal nanoparticles were synthesized in the absence of surfactant and carrier. The methods of X-ray powder diffraction (XRDX), transmission electron microscope (TEM), high resolution transmission electron microscope (HRTEM), selected area electron diffraction (SAEDN), ICP-AESU, photoelectron spectroscopy (XPS) and specific surface area analysis (BET) were used in detail. To characterize the synthesized CuMo nanoparticles, It was used to catalyze the hydrolysis of aminoborane to produce hydrogen at room temperature. The synthesized Cu0.9Mo0.1 nanoparticles exhibited excellent catalytic performance for the hydrolysis of aminoborane to produce hydrogen. The conversion frequency of the synthesized nanoparticles was 14.9 min ~ (-1) ~ (-1) at room temperature, which was relatively high in the reported Cu catalyst. This simple synthesis method is not only limited to the synthesis of CuMo nanoparticles, but also can be extended to the synthesis of CuW(3.6 CuMo nanocrystalline particles. It provides a general method for the synthesis of Cu-MMoMMOWNCOO) and TM-Mo-TMN CuNiCo) as a series of novel catalysts for the hydrolysis of ammonioborane. The enhanced catalytic activity of bimetallic nanoparticles is attributed to the synergistic effect of Cu-M nanoparticles induced by stress and ligand effect.
【作者单位】： 江西师范大学化学化工学院无机膜材料工程技术研究中心;南昌航空大学航天制造工程学院;
【基金】：supported by the National Natural Science Foundation of China(21463012) Young Scientist Foundation of Jiangxi Province,China(20133BCB23011) “Gan-po talent 555”Project of Jiangxi Province,China~~
【分类号】：O643.36;TQ116.2
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本文编号：1827311