摘要
利用微波加热法,快速制备了负载在泡沫镍基底上的Fe-Ni-Mo/NF复合材料试样.试样的扫描电镜测试、X射线光电子能谱图和X射线衍射谱图分析结果表明,制备的试样均匀分布,Fe-Ni-Mo/NF具有较高的无定型化程度.析氧催化性能测试表明,Fe-Ni-Mo/NF作为催化电极仅需258 m V的过电位便可以达到100 m A/cm^(2)的电流密度,并且展现出了优异的催化稳定性.Fe-Ni-Mo 3金属复合可以有效调节复合氧化物的电子结构和本征活性.实验结果显示,高的无定型化程度和泡沫镍基底有利于电化学活性面积的提高和催化活性位点的充分暴露,从而展现出优异的析氧催化活性和稳定性.实验证实,超快速制备方法可以有效避免有害有机溶剂的使用并显著降低反应时间,且成本较低,此为快速制备其他高效的催化电极提供了重要的参考.
In this work,the sample porous foam-supported Fe,Ni and Mo oxide catalytic materials were fast prepared(only 3 minutes)based on the microwave heating methed.The results of scanning electron microscope(SEM)and XRD diffraction patterns show that this preparation strategy can realize the uniform distribution of prepared sample,and the trimetallic oxides have a high degree of amorphization.The performance test for oxygen evolution reaction showed that the three-dimensional catalytic electrode only needs low overpotential about 258 mV to reach the current density of 100 mA/cm^(2),even higher than that of the RuO_(2) noble metal catalytic material.The electronic structure and intrinsic activity of the composite oxide can be effectively regulated by the coupling of the Fe,Ni and Mo.The high degree of amorphization and three-dimensional nickel foam substrate with abundant pore structure are beneficial to the improvement of electrochemical active area and full exposure of catalytic active sites,which shows excellent catalytic activity and stability for oxygen evolution reaction.The experiment shows that the ultra-fast preparation strategy proposed in this study can effectively avoid the use of harmful organic solvents and significantly reduce the reaction time,which has important reference value for the rapid preparation of other efficient catalytic materials at low cost.
作者
吴帅炜
高涛涛
唐相民
虞淑敏
刘荣
WU Shuaiwei;GAO Taotao;TANG Xiangmin;YU Shumin;LIU Rong(School of Mechanical Engineering,Chengdu University,Chengdu 610106,China;Institute for Advanced Study,Chengdu University,Chengdu 610106,China;School of Preclinical Medicine,Chengdu University,Chengdu 610106,China)
出处
《成都大学学报（自然科学版）》
2022年第2期175-180,共6页
Journal of Chengdu University（Natural Science Edition）
关键词
电催化
析氧反应
微波加热法
铁镍钼氧化物
原位负载
electrocatalysis
oxygen evolution reaction
microwave heating
nickel-foam-molybdenum oxide
in situ loading
