Thiamine‐assisted hydrothermal synthesis of Ag2 S microcrystals and their optical properties. (1st October 2017)

• Record Type: Journal Article
• Authors: Cui, Xingyu; Yuan, Chen; Li, Sha; Hu, Tong; Bao, Jiehua; Chen, Shuwei
• Is Part Of: Micro & nano letters. Volume 12:Number 10(2017)
• Page Start: 714
• Page End: 716
• Publication Date: 2017-10-01
• Subjects: silver compounds -- crystal growth from solution -- crystal morphology -- scanning electron microscopy -- transmission electron microscopy -- X‐ray diffraction -- photoluminescence -- Raman spectra; optical properties -- facile thiamine‐assisted hydrothermal synthesis -- silver sulphide microcrystals -- water‐ethanol binary solution -- morphological property -- phase composition -- scanning electron microscopy -- transmission electron microscopy -- X‐ray diffraction -- Raman spectrometry -- photoluminescence -- cubic microcrystal synthesis -- blue‐light range -- Ag2S; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2017.0149
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : Facile thiamine‐assisted hydrothermal synthesis of silver sulphide (Ag2 S) microcrystals in the water/ethanol binary solution is reported. The reaction conditions including the contents of reactants, solvents and reaction times, were optimised. The morphology, phase composition and optical properties of the as‐prepared Ag2 S product were characterised with scanning electron microscopy, transmission electron microscopy, X‐ray diffraction, Raman spectrometry and photoluminescence (PL). The results indicate that the synthesised cubic Ag2 S microcrystals have strong PL in the blue‐light range. A possible synthesis mechanism was proposed for the cubic Ag2 S microcrystals. It is noteworthy that no toxic hydrogen sulphide was released from the environmentally friendly synthesis reaction proposed in the present work. This is for the first time that thiamine, an ordinary and cheap biomolecule, was used as the S source for the preparation of Ag2 S microcrystals.