Affiliations 

  • 1 UCSI University, Department of Chemical and Petroleum Engineering, 1 Jalan Puncak Menara Gading UCSI Heights, Wilayah Persekutuan Kuala Lumpur, Malaysia, 56000, Cheras, MALAYSIA
  • 2 UCSI University Kuala Lumpur Campus: UCSI University, Department of Chemical and Petroleum Engineering, UCSI University, UCSI Heights, 1, Jalan Puncak Menara Gading, Taman Connaught, 56000, Cheras, Kuala Lumpur, MALAYSIA
  • 3 UCSI University, Department of Mechanical and Mechatronics Engineering, 1 Jalan Puncak Menara Gading UCSI Heights, Wilayah Persekutuan Kuala Lumpur, Malaysia, 56000, Cheras, MALAYSIA
  • 4 Liverpool John Moores University, Built Environment and Sustainable Technologies (BEST) Research Institute, Built Environment and Sustainable Technologies (BEST) Research Institute, Liverp, Liverpool, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
  • 5 Changshu Institute of Technology, School of Electronic and Information Engineering, School of Electronic and Information Engineering, Changshu Institute of Technolo, Suzhou, CHINA
ChemSusChem, 2024 Jul 01.
PMID: 38948933 DOI: 10.1002/cssc.202400845

Abstract

The common synthesis approach of reduced graphene oxide (rGO) using toxic reducing agents poses a threat to environmental pollution. This study used banana peel extract as a green reducing agent for the synthesis of rGO. Ultrasonication was assimilated to expedite the synthesis process. For comparison, rGO was also produced by reducing GO with hydrazine treatment under conventional stirring. Both morphological (SEM) and physicochemical (FTIR and XRD) studies have revealed that banana peel extract can reduce GO to rGO, although its reducing effect is much weaker compared to hydrazine. Despite this, the rGO produced using banana peel extract with the assimilation of ultrasonication technique has a greater interlayer spacing than that formed under the conventional stirring method. In terms of electrical properties, the electrical conductance of hydrazine-produced rGO (5.69 × 10-6 S) is higher than the banana peel extract-produced rGO (3.55 × 10-6 S - 4.56 × 10-6 S). Interestingly, it was found that most of the rGO produced by banana peel extract under ultrasound assistance has higher or comparable electrical conductance compared to the rGO produced by banana peel extract under stirring method. This implies the feasibility of using short-period ultrasound to replace conventional stirring in rGO synthesis.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.