个人信息Personal Information
副教授
博士生导师
硕士生导师
主要任职:Associate Professor
其他任职:系教工党支部书记
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:工业催化. 能源化工
办公地点:大连理工大学西校区化工实验楼B421
电子邮箱:lium@dlut.edu.cn
Crystallization behavior of 3D-structured OMS-2 under hydrothermal conditions
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论文类型:期刊论文
发表时间:2015-01-01
发表刊物:CRYSTENGCOMM
收录刊物:SCIE、Scopus
卷号:17
期号:19
页面范围:3636-3644
ISSN号:1466-8033
摘要:Homogeneous flower-like OMS-2 particles were successfully prepared in a short time of merely 4 h using a hydrothermal method under a MnSO4-K2S2O8-K2SO4-H2SO4 system. The flower-like OMS-2 particles with a diameter of around 2 mu m were composed of uniform slender cryptomelane rods several hundred nanometers in length when the pH of the precursor solution was 0.18 and the solution was treated at 443 K. XRD and SEM characterization techniques demonstrated that formation of flower-like OMS-2 involved three stages including formation of fiber-like OMS-2, flower-like pyrolusite-type MnO2 and flower-like OMS-2 with decreasing pH value from 4.08 to 0.18. In the case of reaction time, the redox reaction between Mn2+ and S2O82- was accomplished within the initial 1 h, and the highly crystallized uniform flower-like particles were obtained at 4 h.