| LIU Fei,CHEN Sha,LIN Qian,WANG Xiao-dan,CAO Jian-xin.Effect of anions from calcium sources on the synthesis of nano-sized xonotlite fibers[J].Optoelectronics Letters,2017,13(2):81-83 |
| Effect of anions from calcium sources on the synthesis of nano-sized xonotlite fibers |
| Author Name | Affiliation | | LIU Fei | School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
Key Laboratory of Green Chemical and Clean Energy Technology, Guiyang 550025, China
Key Laboratory of Efficient Utilization of Mineral and Green Chemical Technology, Guiyang 550025, China | | CHEN Sha | School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
Key Laboratory of Efficient Utilization of Mineral and Green Chemical Technology, Guiyang 550025, China | | LIN Qian | School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
Key Laboratory of Green Chemical and Clean Energy Technology, Guiyang 550025, China | | WANG Xiao-dan | Key Laboratory of Green Chemical and Clean Energy Technology, Guiyang 550025, China | | CAO Jian-xin | School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
Key Laboratory of Green Chemical and Clean Energy Technology, Guiyang 550025, China
Key Laboratory of Efficient Utilization of Mineral and Green Chemical Technology, Guiyang 550025, China |
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| Abstract: |
| The xonotlite fibers were synthesized via the hydrothermal synthesis method with CaO and SiO2 as the raw materials and the molar ratio of Si/Ca of 1.0. Effect of anions from various calcium sources on the microstructure of the xonotlite fibers is studied in this paper. These obtained products were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and scanning electron microscope (SEM) techniques to investigate their crystalline phase, crystal structure and morphology. The results indicate that anion from various calcium sources has little influence on the crystalline phases of xonotlite fibers but poses a great impact on their morphologies. Xonotlite fibers with single crystal characteristics and large aspect ratio of 50—100 were successfully fabricated from CaCl2 as calcium material at 225 °C for 15 h. The existence of Cl? anion in the CaO-SiO2-H2O system significantly contributes to the formation of xonotlite crystal. |
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