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Silver Nanorings Fabricated by Glycerol-Based Cosolvent Polyol Method
Zhihang Li1, Dong Guo2, Peng Xiao3
1Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Micromachines
|February 29, 2020
Summary
Researchers developed an eco-friendly method to synthesize silver nanorings (AgNRs) for transparent flexible electrodes. Optimal conditions, influenced by cosolvent ratio and PVP concentration, significantly increased AgNR yield and controlled ring diameter.
Area of Science:
- Materials Science
- Nanotechnology
- Electrochemistry
Background:
- Transparent flexible electrodes are crucial for wide bandgap devices and wearable electronics.
- Silver nanostructures, particularly silver nanorings (AgNRs), offer promising properties for these applications.
- Existing synthesis methods may lack environmental friendliness or precise control over nanostructure morphology.
Purpose of the Study:
- To investigate an environmentally friendly glycerol-based polyol method for synthesizing silver nanorings (AgNRs).
- To identify key factors influencing AgNR yield and ring diameter using Taguchi design.
- To understand the mechanism behind AgNR formation.
Main Methods:
- Utilized a glycerol-based cosolvent polyol synthesis method.
- Employed Taguchi design methodology to optimize synthesis parameters.
- Conducted structural characterization to analyze AgNR morphology and growth.
Main Results:
- Identified cosolvent ratio and polyvinylpyrrolidone (PVP) concentration as significant factors affecting AgNR yield and diameter.
- Observed specific growth angles during early nucleation.
- Synthesized AgNRs with diameters ranging from 7.17 to 42.94 μm, with significantly increased quantity under optimal conditions.
Conclusions:
- The glycerol-based polyol method is effective for synthesizing AgNRs.
- Selective growth of the (111) plane, influenced by the differing reducibility of solvents, is likely responsible for AgNR formation.
- Optimized synthesis parameters lead to enhanced yield and controlled morphology of AgNRs for electronic applications.
