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Graphite Whiskers Derived from Waste Coffee Grounds Treated at High Temperature
Gan Jet Hong Melvin1, Zhipeng Wang2, Shingo Morimoto3
1Material and Mineral Research Unit Faculty of Engineering Universiti Malaysia Sabah Jalan UMS 88400 Kota Kinabalu Sabah Malaysia.
Global Challenges (Hoboken, NJ)
|October 1, 2019
Summary
Researchers transformed coffee grounds into graphite whiskers using high-temperature treatment. These novel graphite whiskers exhibit unique rod-like structures suitable for advanced material applications.
Area of Science:
- Materials Science
- Nanotechnology
- Carbon Materials
Background:
- Coffee grounds are an abundant waste material.
- Graphite whiskers are valuable carbon nanomaterials with diverse applications.
- Sustainable methods for producing graphite whiskers are needed.
Purpose of the Study:
- To investigate the feasibility of producing graphite whiskers from coffee grounds.
- To characterize the morphology and structure of the synthesized graphite whiskers.
Main Methods:
- Coffee grounds were pyrolyzed at 2500 °C for 1 hour under an argon atmosphere.
- Scanning Electron Microscopy (SEM) and Raman Spectroscopy were used for characterization.
Main Results:
- Rod-like graphite whiskers with conical tips were successfully synthesized.
- Whisker dimensions ranged from 1-3 µm in diameter and 4-10 µm in length.
- Raman spectroscopy indicated graphitization, with a strong G' peak potentially linked to carbon layer disclination.
Conclusions:
- Coffee grounds can be a viable precursor for sustainable graphite whisker production.
- The synthesized graphite whiskers possess unique structural characteristics.
- Further research can explore their applications in composites and electronics.
