Crystallization behavior of 3D-structured OMS-2 under hydrothermal conditions
发布时间：2019-03-09
点击次数：
- 论文类型：
- 期刊论文
- 发表时间：
- 2015-01-01
- 发表刊物：
- CRYSTENGCOMM
- 收录刊物：
- Scopus、SCIE
- 文献类型：
- J
- 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.
- 第一作者
- Wang, Yanli
- 合写作者
- Guo, Xinwen,Liu, Min,Li, Keyan,Zhang, Anfeng
- 通讯作者
- Wang, YL (reprint author), Dalian Univ Technol, Sch Chem Engn, PSU DUT Joint Ctr Energy Res, State Key Lab Fine Chem, Dalian 116024, Peoples R China.