硅酸盐通报2017，Vol.36Issue(6)：1811-1817,7.
黑滑石煅烧产物的酸活化及晶格重建
Acid Activation and Lattice Reconstruction of Calcined Black Talc
摘要
Abstract
Black talc is a common layered silicate.Calcined black talc from Guangfeng, Jiangxi was activated by 2 mol·L-1 HCl solutions at 80 ℃ hydrothermal conditions with solid/liquid ratio of 1∶10.XRD results indicated that the crystal structures of enstatite and wollastonite were destroyed by the acid treatment.During the acid activation, Mg2+ in the octahedral structure of enstatite was replaced by H+.The surface morphology was eroded and the erosion depth increased with activation time.The acid activated talc was subsequently treated by ZnSO4 solutions.The relative intensities of peaks of enstatite and wollastonite increased gradually, and the crystal parameters such as full width at half maximum also gradually recovered.It is suggested that the crystal structure of calcined talc has been reconstructed by the incorporation of Zn2+ ions into the octahedral lattice.The Zn-reconstructed product exhibited enhanced antibacterial performance against Staphylococcus aureus and Escherichia colifurther with respect to the original calcined talc.This study provided a potential method to prepare functional talc materials, which could greatly extend the potential applications of black talc.关键词
黑滑石/酸活化/Zn置换/晶格重建/抗菌能力Key words
black talc/acid activation/Zn2+-substitution/lattice reconstruction/antibacterial activity分类
通用工业技术引用本文复制引用
裘林莉,张平萍,陈雪刚,秦文莉,葛柳钦,叶瑛..黑滑石煅烧产物的酸活化及晶格重建[J].硅酸盐通报,2017,36(6):1811-1817,7.基金项目
国家自然科学基金(21406193) （21406193）
