青岛科技大学  English 
庞秀江
赞  

副教授 硕士生导师  

教师拼音名称:pangxiujiang

入职时间:2005-05-10

所在单位:物理化学教研室

学历:博士研究生

性别:女

学位:工学博士

职称:副教授

手机版

访问量:

最后更新时间:..

Synthesis and characterization of 10-hydroxycamptothecin - sebacate - layered double hydroxide nanocomposites

关键字:

摘要:Water-dispersed LDH nanosheets prepared using a microreactor could be used as building blocks for LDH-based functional materials. Elucidating the growth behavior of LDH nanosheets in aqueous phase helps to obtain its aqueous dispersion for further application in different fields. In this paper, a two stage growth behavior of LDH nanosheets was proposed which was based on the results of transmittance, viscosity, pH value, size distribution and morphological features of crystallites. In the first stage, MgAl-LDH nanosheet gel was dispersive in aqueous phase and the lateral size of nanosheets grew progressively, while in the second stage, the nanosheets stacked to build a three-dimensional network and the integrated plate-like structure of LDH was formed progressively. For both stages, curves of pH versus standing time implied the growth behavior fitted a first-order model. The results of both transmittance and viscosity indicated that the dispersion degree and nanosheet stacking rate were temperature dependent and independent of concentration. A diagram including three regions was made, which could be used to determine the state of the LDH nanosheets in aqueous phase and could also provide a theoretical basis for the practical application of LDH nanosheets.

卷号:7

期号:25

是否译文:

崂山校区 - 山东省青岛市松岭路99号   
四方校区 - 山东省青岛市郑州路53号   
中德国际合作区(中德校区) - 山东省青岛市西海岸新区团结路3698号
高密校区 - 山东省高密市杏坛西街1号   
济南校区 - 山东省济南市文化东路80号©2015 青岛科技大学    
管理员邮箱:master@qust.edu.cn