镁基插层结构功能材料（LDHs）是一类新兴的阴离子型功能材料，通过调控其组成结构，在获得新结构的同时获得新功能，或使其性能得到极大强化，得到多种功能材料。目前已建成多套产业化装置，产品在农业、建材等领域得到广泛应用，年需求量超过100万吨。但在产业化宏量制备中出现了难以解决的团聚现象，极大影响了产品性能，后经大量研究表明是晶体表面缺陷导致了纳米晶粒的团聚。.本课题通过控制晶化和降温条件以及离子环境等方式调控LDHs表面缺陷种类、数量、分布等性质，利用晶体学等理论研究缺陷形成过程和性质，结合双电层等理论研究缺陷对纳米晶粒团聚的影响，揭示LDHs纳米晶粒表面缺陷的形成及其团聚现象的科学本质，并进一步提出通过强化晶化过程、准平衡态降温及加入分散剂和引入抑制团聚的客体等方法，避免或降低LDHs纳米晶粒的团聚，为镁基插层结构功能材料的宏量制备和产业化生产奠定理论基础，进而促进盐湖镁资源高值。

Mg-based intercalated functional materials (LDHs) is a class of anionic intercalated functional material. The chemical composition and structure can be readily tailored and controlled obtaining different functional materials with enhanced or new properties. Several commercial plants have been constructed and the products have been widely used in agriculture, construction material, petrochemistry fields etc. The total consumption would be more than 1 million tons per year. However, it is found during the commercial mass production that the crystal surface defects would cause serious agglomeration of these nanoparticles. The agglomeration greatly declines the performance of these materials..In this project, the type, amount and distribution of surface defects will be controlled by modulating aging conditions, ion environment, etc. The formation and properties of surface defects will be studied by crystallography theory, followed by the analysis of the effect of surface defects on the agglomeration of LDHs nanoparticles. Then the relationship between surface defects and agglomeration will be revealed. The method to avoid agglomeration of LDHs nanoparticles will be forwarded by reducing surface defects, introducing anti-agglomeration functional gust and adding dispersant. The research work in this project will be very helpful for the mass production of Mg-based intercalated functional material, contributing to the more efficient utilization of magnesium resources in salt lakes.