Hydrothermal Synthesis of Pure α-Phase Manganese(II) Sulfide without the Use of Organic Reagents
| Autor: | F. M. Michel, John B. Parise, Martin A.A. Schoonen, S. T. Martin, Xing Zhang |
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| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Sulfide General Chemical Engineering Inorganic chemistry chemistry.chemical_element General Medicine General Chemistry Zinc Catalysis chemistry.chemical_compound chemistry Reagent Manganese(II) sulfide Materials Chemistry Hydrothermal synthesis Organosulfur compounds Nuclear chemistry Wurtzite crystal structure |
| Zdroj: | Chemistry of Materials. 18:1726-1736 |
| ISSN: | 1520-5002 0897-4756 |
| Popis: | Recent studies exploring the role of metal sulfides as (photo)catalysts in prebiotic synthesis reactions provide the impetus for finding carbon-free synthesis methods for metal sulfides. The decomposition of organosulfur and organometallic precursor compounds is often the protocol for synthesizing bulk metal chalcogenides, such as manganese sulfide (MnS). Here we report a hydrothermal synthesis method for the formation of MnS in which a MnCl2 solution is injected into a preheated sulfide solution. By varying the temperature of injection and subsequent aging time, we can control the specific crystal phase of the product. Three MnS polymorphs are known, and two of these, α-MnS and γ-MnS, form as pure phases in aqueous systems. The initial precipitate formed upon mixing of aqueous solutions of Mn2+ and S2- at ambient temperature is nanocrystalline and is composed of a mixture of γ-MnS (wurtzite structure) and β-MnS (zinc blende structure). β-MnS has not previously been identified as forming under aqueous con... |
| Databáze: | OpenAIRE |
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