软化学合成法合成2D层状固体钛酸  

Synthesis of 2D layered solid titanate by soft chemical synthesis

作　　者：张金然 王娅 吕江平 李佳怡 赵卫星 ZHANG Jin-ran;WANG Ya;LV Jiang-ping;LI Jia-yi;ZHAO Wei-xing(College of Chemistry and Chemical Engineering,Baoji University of Arts and Sciences,Baoji 721013,China;Key Laboratory of Functional Ceramic Materials of Baoji,Baoji University of Arts and Sciences,Baoji 721013,China)

机构地区：[1]宝鸡文理学院化学化工学院,陕西宝鸡721013 [2]宝鸡文理学院宝鸡市先进功能材料重点实验室,陕西宝鸡721013

出　　处：《化学工程师》2022年第11期94-96,46,共4页Chemical Engineer

基　　金：陕西省重点研发计划项目资助(No.2020KW-041);陕西省留学人员科技活动择优资助项目(No.2020013);宝鸡文理学院2021年大学生创新创业训练计划项目(No.2021XJ090)。

摘　　要：本研究以锐钛矿和两种碱金属氢氧化物为反应原料,首先采用水热法合成层状的前驱体钛酸锂钾K_(0.8)Ti_(1.73)Li_(0.27)O_(4)(KTLO),同时探讨合成KTLO较优的反应条件,即热反应温度为200℃,反应时间为36h,进而实现层状KTLO纳米颗粒的可控合成。再将该前驱体置于HNO溶液中进行两次H~+交换反应,即可得到一种2D层状的固体钛酸H_(1.07)Ti_(1.73)O_(4)·n H_(2)O(HTO),该固体钛酸可用于制备取向性钙钛矿压电陶瓷。In this study,the layered precursor lithium potassium titanate K_(0.8)Ti_(1.73)Li_(0.27)O_(4)(KTLO)was synthesized by hydrothermal method using anatase and two kinds of alkali metal hydroxide as reaction raw materials.The optimal reaction conditions for the synthesis of KTLO were discussed,namely,the thermal reaction temperature was200℃and the reaction time was 36h.Then the layered KTLO nanoparticles were synthesized in a controlled manner.A 2D layered solid titanate H_(1.07)Ti_(1.73)O_(4)·n H_(2)O(HTO)was obtained by placing the precursor in nitric acid solution for two hydrogen ion exchange reactions.The solid titanate can be used to prepare oriented perovskite piezoelectric ceramics.

关 键 词：软化学合成法 层状 固体钛酸 钙钛矿 

分 类 号：TQ174.1[化学工程—陶瓷工业]