Lam, S, Wang, F, Yeap, SP, Teng, KH, Shaw, A, Karunamoothei, V, Khosravi, V and Liu, C (2024) On the Rapid Synthesis of Reduced Graphene Oxide via Ultrasound-Promoted Eco-Friendly Reduction Approach and Its Effects on Physicochemical Properties. ChemSusChem. ISSN 1864-5631

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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.

Item Type:	Article
Uncontrolled Keywords:	Electrical Properties; Fruit Extract; Graphene; Green Synthesis; Ultrasound Technique; 0301 Analytical Chemistry; 0399 Other Chemical Sciences; 0904 Chemical Engineering; General Chemistry; Organic Chemistry
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering T Technology > TP Chemical technology
Divisions:	Civil Engineering and Built Environment
Publisher:	Wiley
SWORD Depositor:	A Symplectic
Date Deposited:	30 Sep 2024 15:30
Last Modified:	30 Sep 2024 15:30
DOI or ID number:	10.1002/cssc.202400845
URI:	https://researchonline.ljmu.ac.uk/id/eprint/24302

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