Synthesis of graphene/tungsten carbide (WC) nanocomposites from palm oil via pulsed arc discharge in liquid medium: morphological, functional, and sas sensing characterization
Document Type
Article
Publication Date
11-1-2024
Abstract
With recent trends moving towards sustainable approaches in adherence to environmental, social, and governance (ESG) standards, research is actively focused on sustainable production of high-potential materials. In this study, a successful synthesis pathway was demonstrated for a graphene/tungsten carbide (WC) nanocomposite via pulsed arc discharge in liquid medium, utilizing crude palm oil and commercial cooking palm oil as liquid precursors. The synthesis of the graphene/WC nanocomposites was carried out by applying current with amplitude of 80 A and 100 A to the tungsten electrode immersed in the liquid palm oil, subjected to 150 arc discharges. A comparative investigation was performed to examine the morphological and functional characteristics of the materials synthesized from the different types of palm oil under different current conditions. In addition, the synthesized nanocomposites were assessed with respect to their gas sensing performance. Impressively, the CRG100(150) nanocomposite (produced from crude palm oil with current of 100 A) exhibited gas sensing response of 4.853% upon injection of 200 ppm of ethanol. The CRG100(150) nanocomposite also demonstrated short response and recovery time of 43 s and 182 s, respectively. Thus, the successful synthesis of CRG100(150), utilizing a natural precursor via arc discharge in liquid, paves the way for the development of sustainable gas sensing materials.
Keywords
Graphene, Palm oil, Gas sensors, Arc discharge
Divisions
mechanical
Funders
Ministry of Education, Malaysia [Grant No: FP005-2018A (FRGS/1/2018/TK05/UM/02/11)],Institute of Management & Monitoring (IPPP), University of Malaya [Grant No: UMSFA2019]
Publication Title
Journal of Electronic Materials
Volume
53
Issue
11, SI
Publisher
Springer
Publisher Location
ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES