Abstract
The use of electric field represents a promising strategy to overcome the
existent challenges in synthesizing metal nanoparticles. A facile and clean method for the preparation of water-soluble metal nanoparticles with a narrow particle distribution is reported here based on the electric-field-driven phase inversion procedure. Bioderived chitosan was used to stabilize the metal nanoparticles and formic acid was employed as both a solvent (for the polymer) and a reductant (for the metal). The electric field has been characterized to modify the hydrogen bonds of the chitosan and promote the stabilization and reduction of metal nanoparticles. Taking silver as an example, the nanoparticles obtained lay in the range of 2-6 nm with a mean size of 3.4 nm. The produced chitosan/Ag nanocomposites can be used in homogenous (water-soluble) form for catalysis and heterogeneous form (as a solid film) for antibiosis. Exceptional performance in the selective regeneration of cofactor NADH (TOF =582 h-1) and an improved antibacterial performance were attained. Successful preparation of metallic Cu, Au and Pt nanoparticles (~1-2 nm) confirms the universality of this method for synthesizing functional nanomaterials with various potential applications.
existent challenges in synthesizing metal nanoparticles. A facile and clean method for the preparation of water-soluble metal nanoparticles with a narrow particle distribution is reported here based on the electric-field-driven phase inversion procedure. Bioderived chitosan was used to stabilize the metal nanoparticles and formic acid was employed as both a solvent (for the polymer) and a reductant (for the metal). The electric field has been characterized to modify the hydrogen bonds of the chitosan and promote the stabilization and reduction of metal nanoparticles. Taking silver as an example, the nanoparticles obtained lay in the range of 2-6 nm with a mean size of 3.4 nm. The produced chitosan/Ag nanocomposites can be used in homogenous (water-soluble) form for catalysis and heterogeneous form (as a solid film) for antibiosis. Exceptional performance in the selective regeneration of cofactor NADH (TOF =582 h-1) and an improved antibacterial performance were attained. Successful preparation of metallic Cu, Au and Pt nanoparticles (~1-2 nm) confirms the universality of this method for synthesizing functional nanomaterials with various potential applications.
| Original language | English |
|---|---|
| Pages (from-to) | 1271–1278 |
| Number of pages | 8 |
| Journal | ACS Sustainable Chemistry & Engineering |
| Volume | 7 |
| Issue number | 1 |
| Early online date | 18 Dec 2018 |
| DOIs | |
| Publication status | Published - 7 Jan 2019 |
Bibliographical note
Funding from the National Natural Science Foundation of China (No. 51203081), Natural Science Foundation of Zhejiang Province (LY16E030005), Opening Foundation from Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology (ACEMT-17-01), and K.C. Wong Magna Fund of Ningbo University is gratefully acknowledged. X.W. also acknowledges financial support from The Royal Society (RG150001 and IE150611).Keywords
- Catalysis
- Chitosan
- NADH
- Nanocomposites
- Noble metal
Access to Document
- Accepted Manuscript
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry & Engineering, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acssuschemeng.8b04927.