Facile fabrication of 3D porous nickel networks for electro-oxidation of methanol and ethanol in alkaline medium
Facile fabrication of 3D porous nickel networks for electro-oxidation of methanol and ethanol in alkaline medium
复制标题
轻松制造 3D 多孔镍网络，用于碱性介质中甲醇和乙醇的电氧化
DOI：
10.1016/j.matchemphys.2018.09.066
复制
发表时间：
2019-01-01
影响因子：
4.6
通讯作者：
Lai, Chuan
中科院分区：
文献类型：
--
作者：
Guo, Xiaogang;Liang, Taotao;Lai, Chuan
多孔金属材料具有高导电性、高比表面积、良好的透气性和轻质等优点，近年来在各个领域受到广泛关注。本文以氢气泡为模板，在常温常压下通过可控电沉积方法制备了一种新型的三维多孔镍薄膜（3DNF）。采用场发射扫描电子显微镜（FESEM）和X射线粉末衍射仪（XRD）对产物的形貌和微观结构进行了分析。首次通过时间序列实验探讨了3DNF的形成机制。电化学测试结果表明，所制备的3DNF具有高的比表面积和良好的开孔结构，对甲醇和乙醇的氧化反应具有良好的电催化性能。因此，该催化剂具有良好的循环寿命和催化性能，在催化、传感器和净化等领域具有广阔的应用前景。
Porous metals are recently gaining interest in various fields with lots of advantages of high conductivity, high surface area, good permeability and light weight properties. In present study, a novel three-dimensional porous nickel films (3DNFs) have been efficiently fabricated by controllable electrodeposition of Ni micro-particles using hydrogen bubbles as the template at ambient temperature and pressure. The morphologies and microstructures of products were analyze by field emission scanning electron microscopy (FESEM) and X-ray powder diffraction (XRD), respectively. The formation mechanism of 3DNFs was firstly explored by time sequential experiments. In addition, electrochemical measurements indicate that the obtained 3DNFs possess great electrocatalytic properties for methanol and ethanol oxidation reaction due to the high surface area and outstanding open porous structures. Thus, the great cycle life and catalytic properties of product indicate the great prospect of the promising catalyst with wide applications in catalysis, sensors and purification.