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Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle
Published on: September 22, 2015
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First Report on High Entropy Alloy Nanoparticle Decorated Graphene
M Y Rekha1, Nitin Mallik1, Chandan Srivastava2
1Department of Materials Engineering, Indian Institute of Science, Bangalore, 560012, India.
Scientific Reports
|June 9, 2018
Summary
This study introduces a novel multimetal high entropy alloy (HEA) nanoparticle-graphene composite. This advanced material demonstrates superior corrosion resistance, making it ideal for protective coatings.
Area of Science:
- Materials Science
- Nanotechnology
- Corrosion Engineering
Background:
- Developing advanced materials with enhanced protective properties is crucial for industrial applications.
- High entropy alloys (HEAs) offer unique properties due to their multi-element composition.
- Graphene's exceptional characteristics make it a promising component in composite materials.
Purpose of the Study:
- To synthesize and characterize a novel multimetal high entropy alloy (HEA) nanoparticle-few layer graphene composite.
- To evaluate the corrosion resistance properties of the synthesized HEA nanoparticle-graphene composite.
- To explore the potential applications of this composite in corrosion resistant coatings.
Main Methods:
- A two-step synthesis involving mechanical milling of graphite with Ni, Cr, Co, Cu, Fe powders.
- Ultrasonication of the milled composite with sodium lauryl sulphate (SLS) to exfoliate graphene and decorate it with HEA nanoparticles.
- Potentiodynamic polarization and electrochemical impedance spectroscopy for corrosion resistance evaluation.
Main Results:
- Successful synthesis of a multimetal HEA nanoparticle-few layer graphene composite.
- The composite exhibits a face-centered cubic (FCC) crystal structure.
- Electrochemical analysis confirmed superior corrosion resistance compared to milled and exfoliated graphene alone.
Conclusions:
- The developed HEA nanoparticle-graphene composite shows excellent corrosion resistance.
- This material holds significant promise for applications in corrosion resistant coatings.
- The synthesis methodology provides a pathway for creating advanced functional nanocomposites.
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