Abstract: Due to the current increase in demand for 2D materials in energy applicationssuch as electrode materials for supercapacitors, batteries, thermoelectric, and hydrogen production via water-splitting,the production of high-quality 2S materials becoming more challenging at the research and development level. These 2D materials mainly include graphene, transition metal dichalcogenides(TMDCs), transition metal nitrides and carbides (MXenes), etc. These ultrathinor layered materials possessing fascinating physical and electrical properties, high-yield, and large-surface area, making them very important core elements in the coming future nanotechnology. In this work, we fabricated large-area graphene and tungsten carbide nanosheets directly grown on tungsten nanoparticles(W NPs)coatede-Si and quartz substrates by hot-wire chemical vapour deposition at low substrate temperatures(<500℃） ,Prior to the deposition, an argon plasma process was employed to induce the formation of wNPs, which act as a metal catalyst to facilitate the growth of large-area monolayer or multi-layer nanosheets.The average grain size of WPs was inbetween 24.3 nm to 7.4 nm.These 2D materials demonstrated excellent optical trsansparency( 80 %), high electrical conductivity (718-966 Ω/sg.), and highphotocurrent density under the visible light irradiation (~ 2 mA/cm2 at 1.5VAg/Agci) for hydrogen production via water-splitting processes. We are expecting that these 2D materials could give a required properties for efficient supercapacitor and hydrogen fuels in the coming fture.
Bio: Dr, Goh Boon Tong is a professor in the Department of Physics, Universiti Malaya, where currently serves as the Deputy Dean, Institute for AdvancedStudies and the Deputy Head of the Low Dimensional Materials Research Center, He earned his PhD in 2012, His primary research interests focus on the synthesis and characterization of nanomaterials, including one-dimensionalstructures (nanowires, nanotubes, and nanorods), two-dimensional materials(graphene and metal carbides), and metallic nanoparticles. To date, he has published over 235 peer-reviewed papers, with a total of nearly 3, 400 citations(h-index = 30) according to Google Scholar, and more than 156 refereed paperswith nearly 2,600 citations (h-index= 26) according to Publons Web of Science.
