One-pot strategy for biomimetic synthesis of zein-conjugated silver sulphide nanospheres in ethanol solution

Li Zhang; Xian Du; Guangrui Yang; Qiuxia Zhang; Dezhi Qin

One-pot strategy for biomimetic synthesis of zein-conjugated silver sulphide nanospheres in ethanol solution

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Author(s): Li Zhang ¹ ; Xian Du ¹ ; Guangrui Yang ² ; Qiuxia Zhang ¹ ; Dezhi Qin ¹
- Affiliations: 1: College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan, 467000, People's Republic of China;
  2: Institute of Environmental and Municipal Engineering, North China University of Water Conservancy and Electric Power, Zhengzhou, 450011, People's Republic of China
Source: Volume 10, Issue 8, August 2015, p. 395 – 399
DOI: 10.1049/mnl.2015.0110 , Online ISSN 1750-0443

Received 25/03/2015, Accepted 22/05/2015, Revised 21/05/2015, Published 01/07/2015

Water-soluble Ag₂S nanospheres embedded in a zein matrix were successfully synthesised by a simple, controllable protein-assisted method in ethanol solutions. The morphology and size of products were tunable through controlling the concentration of zein. X-ray diffraction and energy-dispersive X-ray spectrum results showed that the obtained samples were a pure monoclinic phase of Ag₂S. The Ag₂S nanoparticles were homogeneously surrounded by protein molecules observed from a high-resolution transmission microscopy image. There was strong chemical interaction between the Ag₂S nanocrystals and the functional groups of zein molecules, which has been confirmed by Fourier transform infrared and thermogravimetry analysis measurements. The band gap of zein-conjugated Ag₂S nanocrystals showed obvious blue shift in ultraviolet-visible spectra compared with bulk materials because of the quantum size effect.

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One-pot strategy for biomimetic synthesis of zein-conjugated silver sulphide nanospheres in ethanol solution

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