镁铝层状双氢氧化物的应用研究进展

Research Progress on the Application of Layered Magnesium Aluminum Double Hydroxides

镁铝层状双氢氧化物(Mg-Al-LDH)是一种新型的二维层状纳米材料,具有比表面积大、吸附性强、热稳定性高、循环稳定性好等特点,在能源、医药、环境等领域具有良好的应用前景,可用作催化剂、电池材料、药物载体、分析检测试剂、污水处理剂、气体吸附剂等,其制备方法主要有共沉淀法、水热法、离子交换法等,其中共沉淀法操作简单、成本低、反应条件易控制,是一种常用的制备方法。同时,Mg-Al-LDH也存在易团聚、制备过程中废液量大、再生困难等缺点,目前其实验室相关研究较多,大规模工业化应用较少,后续需努力克服其缺点,使其便于大规模工业化应用。作者系统综述了近年来国内外Mg-Al-LDH的应用研究进展,可为其相关理论及应用研究提供参考。

Magnesium aluminum layered double hydroxide(Mg-Al-LDH)is a new type of two-dimensional layered nanomaterial,which has the characteristics of large specific surface area,strong adsorption,high thermal stability,and good cycling stability.It has good application prospects in energy,medicine,environment and other fields,and can be used as a catalyst,battery material,drug carrier,analysis and detection reagent,sewage treatment agent,gas adsorbent,etc.Its preparation methods mainly include co-precipitation method,hydrothermal method,ion exchange method,etc.Among them,co-precipitation method is a commonly used preparation method with simple operation,low cost,and easy control of reaction conditions.At the same time,Mg-Al-LDH also has drawbacks such as easy aggregation,large amount of waste liquid during preparation,and difficulty in regeneration.Currently,there is more laboratory related research and less large-scale industrial application for Mg-Al-LDH.Efforts need to be made to overcome these shortcomings in the future to make it easier for industrial application.The author provides a systematic review of the application research progress of Mg-Al-LDH both domestically and internationally in recent years,which can provide reference for its related theory and application research.