电气石的环境功能属性及其复合功能材料应用研究

Environmental Functionalities of Tourmaline and Applications of Its Functional Composites

电气石是非金属矿物领域中较为重要的一类硅酸盐类矿物,属非可再生类天然矿物。电气石晶体具有化学成分复杂、晶形及颜色多样等特征。电气石晶体内部的物质及结构特征,使其具有压电性、热释电性、自发极化效应和释放负离子等特性。近年来,关于利用电气石的环境功能属性制备各类复合功能材料的研究已成为备受关注的热点。基于电气石的来源、分类、晶体内部物质成分与结构组成等,概述了电气石的理化结构特征及各环境功能属性,进而论述电气石及其复合功能材料在各个实际领域中的应用,归纳并总结电气石在现今环境污染治理应用当中存在的相关问题,最后对电气石及其复合功能材料的发展前景进行了展望。

Tourmaline is one of the most important silicate minerals in the group of non-metallic minerals as a non-renewable natural mineral. The tourmaline crystal has distinctive characteristics including complex chemical composition, polymorph and color diversity. Tourmaline presents pyroelectric, piezoelectric, spontaneous polarization and negative ionreleasing, which originate from its composition and structural properties. In recent years, it has become a hot topic to prepare various functional composites utilizing tourmaliners environmental functionalities. This paper provides a summary over the unique physical and chemical properties, and en- vironmental functionalities of tourmaline, based on its origin, classification, crystal composition and microstructure. Furthermore it describes tourmaline＇s various applications in the fields of environmental pollution and relevant key issues, also makes a prospect on the development of tourmaline functional composites.