Shape control synthesis of low-dimensional calcium sulfate |
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| Authors: | LI-XIA YANG YAN-FENG MENG PING YIN YING-XIA YANG YING-YING TANG LAI-FEN QIN |
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| Affiliation: | (1) Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, People’s Republic of China;(2) State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, 210093, People’s Republic of China |
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| Abstract: | Calcium sulfate nanorods, nanowires, nanobelts and sheets had been synthesized via a facile solution reaction of CaCl2 and H2SO4 in mixed solvents of ethanol/N, N-dimethylformamide and deionized water at 35°C. The results indicated that well-crystallized CaSO4 nanomaterials with different morphology were obtained by adjusting the volume ratio of ethanol/N, N-dimethylformamide to deionized water and the reaction time. Samples prepared at 35°C in mixed solvents of 50 mL ethanol and
30 mL water for 1 min and 2 h showed nanowire and sheet morphology, respectively. While increasing the volume ratio of ethanol
to deionized water to 78/2, only nanorods were obtained. When N, N-dimethylformamide was employed to substitute ethanol, the sample heating at 35°C for 2 h was composed of nanowires in 50 mL
N, N-dimethylformamide and 30 mL water. Higher volume ratio of N, N-dimethylformamide to deionized water caused the formation of nanorods. |
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