-
- Home
- Journals
- Bulletin of Materials Science
- Volume 38
- Issue 6
-
Fabrication of worm-like Ag2S nanocrystals under mediation of protein
Dezhi Qin Li Zhang Xian Du Guangrui Yang Qiuxia Zhang
Volume 38 Issue 6 October 2015 pp 1665-1671
-
-
Fulltext
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/boms/038/06/1665-1671 -
Keywords
Silver sulphide ;biomimetic ;pepsin ;nanocrystals. -
Abstract
A simple protein-assisted method was reported to synthesize pepsin-conjugated Ag2S nanocrystals in aqueous solution. The morphology, composition and structure of the products were characterized by transmission electron microscopy, high-resolution transmission electron microscopy, energy-dispersive spectroscopy, selected area electron diffraction and X-ray diffraction measurements. The results showed that as-prepared monoclinic Ag2S nanocrystals are worm-like nanochains in shape with sizes about 25 nm in diameter and up to hundreds of nanometres in length. The multiple coordinate bonds of pepsin molecules to the surface of Ag2S nanocrystals make as-prepared samples have good colloidal stability and biocompatibility as elucidated by Fourier transform infrared examination. Thermogravimetry–differential scanning calorimetry analysis indicated that the obtained products are inorganic–organic nanocomposites and there is strong interaction between Ag2S and pepsin. This interaction could result in the change of hydrophilic environment of pepsin and consequently intrinsic fluorescence of protein was quenched by Ag2S nanocrystals. Furthermore, the nanochains assembly of particle–particle and rod–rod oriented attachment was discussed to investigate the growth mechanism.
-
Author Affiliations
Dezhi Qin1 Li Zhang1 Xian Du1 Guangrui Yang2 Qiuxia Zhang1
- College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, China
- Instituteof Environmental and Municipal Engineering, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China
-
Dates
- Published
- October 2015
- Manuscript received
- 15 May 2015
- Accepted
- 24 June 2015
-
-
Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
-
Bulletin of Materials Science | News
-
Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
Editorial Note on Continuous Article Publication
Posted on July 25, 2019Click here for Editorial Note on CAP Mode
-