| pH值对溶剂热合成FeS2粉体的影响 |
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| 引用本文： | 陈艳华,郑毓峰,张校刚,孙言飞,董有忠.pH值对溶剂热合成FeS2粉体的影响[J].物理化学学报,2005,21(4):419-424. |
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| 作者姓名： | 陈艳华 郑毓峰 张校刚 孙言飞 董有忠 |
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| 作者单位： | Department of Physics; College of Chemical Engineering, Xinjiang University, Urumqi 830046 |
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| 基金项目： | 国家自然科学基金(50062002)资助项目~~ |
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| 摘 要： | 采用FeSO4与NH2CSNH2为反应前驱物, 通过溶剂热反应合成了高纯度的FeS2 (pyrite)粉体. 实验表明,在聚乙烯吡咯烷酮（PVP）作保护剂的乙醇水溶液中, 200 ℃下反应36 h, 适当调节溶液的pH值, 即可在酸性环境(pH=5)和碱性环境(pH=10)下制得单一相的黄铁矿型FeS2粉体. 讨论了溶液pH值对溶剂热合成FeS2粉体物相组成、晶粒度及光学性质的影响.
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| 关 键 词： | FeS2 溶剂热 pH值 分散剂 |
| 收稿时间： | 2004-09-09 |
| 修稿时间： | 2004年9月9日 |
Effect of pH Value on FeS2 Powder Synthesized by Solvothermal Process |
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| CHEN,Yan-Hua,ZHENG,Yu-Feng,ZHANG,Xiao-Gang,SUN,Yan-Fei,DONG,You-Zhong.Effect of pH Value on FeS2 Powder Synthesized by Solvothermal Process[J].Acta Physico-Chimica Sinica,2005,21(4):419-424. |
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| Authors: | CHEN Yan-Hua ZHENG Yu-Feng ZHANG Xiao-Gang SUN Yan-Fei DONG You-Zhong |
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| Institution: | Department of Physics; College of Chemical Engineering, Xinjiang University, Urumqi 830046 |
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| Abstract: | Synthesis of the FeS2 (pyrite) powders via a solvent-thermal process is reported. Using FeSO4 and NH2CSNH2 as precursors and polyvinylpyrrolidone (PVP) as a protective agent (dispersant), high purity FeS2 powders have been synthesized by reaction in alcohol-water solution at 200 ℃ for 36 h. The experiment result shows that, single-phase pyrite powders can be obtained both in acid environment (pH=5) and in alkali environment (pH=10). Effects of pH value on pyrite powder structure, crystallite size and optical characterization are discussed. |
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| Keywords: | FeS2 (pyrite) Solvothermal pH value Dispersant |
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