本文已被：浏览 1080次 下载 745次
投稿时间：2019-05-01
投稿时间：2019-05-01
中文摘要: 传统合成铁/铝水滑石纳米片（Fe/Al-LDHs）方法往往需要使用不稳定的铁盐，还要在一定温度下进行长时间的老化。为了克服这些缺点，开发了一种易于操作、环境友好且可以规模化操作的电化学牺牲阳极水滑石制备方法。采用牺牲阳极法成功地合成了六边形Fe/Al-LDHs，厚度约为32 nm，直径为50~100 nm，金属摩尔比[Fe]/[Al]=2：1。实验表明：Fe/Al-LDHs的结晶过程主要依赖于最先沉淀的Al（OH）3形成的晶核和Fe的化学价；在低电流密度下，同时采用Fe和Al为牺牲阳极，通过控制输出电流来控制阳极电解的金属量，可快速大规模制备Fe/Al-LDHs，具有良好的应用前景。
Abstract:Conventional methods for the synthesis of Fe/Al-LDHs often require the use of unstable iron salts and prolonged aging at a given temperature.In order to overcome these shortcomings,an electrochemical sacrificial anode hydrotalcite preparation method is developed,which is easy to operate,environmentally friendly and can be operated on a large scale.Hexagonal Fe/Al-LDHs was successfully synthesized by sacrificial anode method,with a thickness of about 32 nm and a diameter of about 50~100 nm,and a metal molar ratio[Fe]/[Al]=2.Experiments show that the crystallization process of Fe/Al-LDHs mainly depends on the crystal nucleus formed by the first precipitation Al(OH)3 and the chemical valence of Fe.Under low current density,Fe and Al are used as sacrificial anode simultaneously,and the amount of metal in anode electrolysis can be controlled by controlling the output current.Fe/Al-LDHs can be prepared rapidly and in large scale,which has a good application prospect.
keywords: electrochemistry double anode method Fe/Al-LDHs
文章编号：20201014 中图分类号：TM912 文献标志码：
基金项目:国家自然科学基金（21507081）。
引用文本：
时鹏辉,邱海俊.电化学牺牲双阳极法一步制备铁/铝水滑石纳米片[J].上海电力大学学报,2020,36(1):71-77.
SHI Penghui,QIU Haijun.The Preparation of Fe/AlLDHs by Electrochemical Double Anode Method in One Step[J].Journal of Shanghai University of Electric Power,2020,36(1):71-77.
时鹏辉,邱海俊.电化学牺牲双阳极法一步制备铁/铝水滑石纳米片[J].上海电力大学学报,2020,36(1):71-77.
SHI Penghui,QIU Haijun.The Preparation of Fe/AlLDHs by Electrochemical Double Anode Method in One Step[J].Journal of Shanghai University of Electric Power,2020,36(1):71-77.