Composition and morphology of the thermal decomposition products of 3Mg(OH)2·MgCl2·8H2O nanowires |
| |
| Institution: | 1. Institute of Microelectronics, Tsinghua University, Beijing 100084, China;2. Department of Chemical Engineering, Tsinghua University, Beijing, 00084, China;3. Institute of Functional Nano and Soft Materials, Soochow University, Suzhou 215123, China;1. Institute of Microelectronics, Tsinghua University, Beijing 100084, China;2. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;3. Materials Research Institute, Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802, USA;4. Institute of Functional Nano and Soft Materials, Soochow University, Suzhou 215123, China;5. Research center for analysis and measurement, Kunming University of Science and Technology, Kunming 650093, China;1. Qingdao Industrial Energy Storage Technology Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No.189 Songling Road, Laoshan District, Shandong, Qingdao 266101, PR China;2. University of Chinese Academy of Sciences, 19A Yuquanlu Road, Beijing 100049, PR China;3. Division of Reaction Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China;4. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan;1. CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China;2. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;3. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan |
| |
| Abstract: | The thermal decomposition of 3Mg(OH)2·MgCl2·8H2O (318MHCH) nanowires synthesized from agglomerated Mg(OH)2 microspheres was investigated. The influence of heating rate and temperature on the composition and morphology of the products was investigated. Thermogravimetric-differential scanning calorimetry, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, and X-ray diffraction showed that increasing the heating rate from 1 to 20 °C/min promoted the escape of crystalline water from the 318MHCH nanowires. 318MHCH nanowires were dehydrated stepwise to 310MHCH porous nanowires from room temperature to 320 °C, and then to MgO cubic nanoparticles from 420 to 700 °C. The nanowires retained their one-dimensional morphology, until the phase changed to MgO. The immediate collapse of the one-dimensional structure was attributed to the presence of Mg–O/Cl chains. |
| |
| Keywords: | Magnesium hydroxide chloride hydrates Thermal decomposition Nanowires Immediate collapse Mg–O/Cl chains |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
