Facile Hydrothermal Synthesis of Nanocubic Pyrite Crystals Using Greigite Fe3S4 and Thiourea as Precursors
文献类型：期刊论文
| 作者 | Xin Nie; Suxing Luo; Meizhi Yang; Ping Zeng; Zonghua Qin; Wenbin Yu; Quan Wan |
| 刊名 | Minerals
 |
| 出版日期 | 2019 |
| 页码 | 1-13 |
| 关键词 | Nanocubic Pyrite Hydrothermal Synthesis Greigite Thiourea |
| 英文摘要 | Nanocubic pyrite (FeS2) crystals with exposed (100) crystal faces and sizes of 100–200 nm were successfully synthesized via a facile hydrothermal method using greigite (Fe3S4) as the iron precursor and thiourea (NH2CSNH2) as the sulfur source. When the concentration of thiourea was 40 mmol/L, both pyrite and hematite were observed in the as-prepared sample, indicating
incomplete conversion of greigite into pyrite. With an increased thiourea concentration to 80 mmol/L, pyrite was found to be the only crystalline phase in the synthesized samples. All greigite could be transformed to pyrite within 24 h via the hydrothermal method, while further prolonging the hydrothermal time had insignificant effect on the crystal phase composition, crystallinity, and morphologies of the prepared nanocubic pyrite crystals. In contrast, when a mixture of Na2S and S powder was used to replace the thiourea as the sulfur source, tetragonal, orthorhombic, cubic, and irregular pyrite crystal particles with sizes of 100 nm–1 μm were found to co-exist in the prepared samples. These results demonstrate the critical influence of sulfur source on pyrite morphology. Furthermore, our hydrothermal process, using a combination of greigite and thiourea, is proved to be effective in preparing nanocubic pyrite crystals. Our findings can also provide new insight into the formation environments and pathways of nanocubic pyrite under hydrothermal conditions. |
| 语种 | 英语 |
| 源URL | [http://ir.gyig.ac.cn/handle/42920512-1/10474]  |
| 专题 | 地球化学研究所_矿床地球化学国家重点实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, China 2.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China 3.Zunyi Normal College, Zunyi 563002, China 4.CAS Center for Excellence in Comparative Planetology, Hefei 230026, China |
| 推荐引用方式 GB/T 7714 | Xin Nie；Suxing Luo；Meizhi Yang；Ping Zeng；Zonghua Qin；Wenbin Yu；Quan Wan. Facile Hydrothermal Synthesis of Nanocubic Pyrite Crystals Using Greigite Fe3S4 and Thiourea as Precursors[J]. Minerals,2019:1-13. |
| APA | Xin Nie；Suxing Luo；Meizhi Yang；Ping Zeng；Zonghua Qin；Wenbin Yu；Quan Wan.(2019).Facile Hydrothermal Synthesis of Nanocubic Pyrite Crystals Using Greigite Fe3S4 and Thiourea as Precursors.Minerals,1-13. |
| MLA | Xin Nie；Suxing Luo；Meizhi Yang；Ping Zeng；Zonghua Qin；Wenbin Yu；Quan Wan."Facile Hydrothermal Synthesis of Nanocubic Pyrite Crystals Using Greigite Fe3S4 and Thiourea as Precursors".Minerals (2019):1-13. |
入库方式： OAI收割
来源：地球化学研究所
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