| 光谱学与光谱分析 |
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| Synthesis of Ag2S Nanoparticles at Room Temperature and Their Characterization with XPS |
| YE Yin, SHAO Ming-wang*, WU Zheng-cui, NI You-bao |
| College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China |
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Abstract Nanocrystalline silver sulfide was successfully synthesized at room temperature and ambient pressure via a novel, safe, convenient and inexpensive redox reaction, using silver oxide, sulfur and polyformaldehyde as reactants and ethylenediamine as solvent. The products were characterized with XPS, XRD and TEM. XRD spectrum demonstrates a monoclinic Ag2S; TEM shows the products are rod-like nanoparticles with average diameter of 100 nm, its corresponding SAED reveals clear diffraction spots indexed as (120) and (3-03); XPS confirms the formation of Ag2S and indicates the sample’s surface stoichiometry of Ag∶S=1∶0.453. The control experiments show polyformaldehyde and ethylenediamine are both important in the formation of products. Ethylenediamine accelerates the reactions via dissolving silver oxide and sulfur and neutralizing the by-product formic acid.
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Received: 2003-07-18
Accepted: 2003-12-08
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Corresponding Authors:
SHAO Ming-wang
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| Cite this article: |
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YE Yin,SHAO Ming-wang,WU Zheng-cui, et al. Synthesis of Ag2S Nanoparticles at Room Temperature and Their Characterization with XPS [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(04): 553-555.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2005/V25/I04/553 |
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