Facile fabrication of bismuth vanadate grafted carbon nanotubes composite for enhanced oxygen evolution reaction

Abstract

The increasing demand of maintainable energy boosts researchers to develop reliable electrocatalysts for enhanced water splitting mechanisms. All thesynthesized materials, including CNTs, BiVO4, and BiVO4/CNTs, were characterized utilizing a variety of methodologies to assist the structural, configurational, morphological, and topographical investigations. This work aims to create unique BiVO4/CNTs nanocomposite, which may have higher electrocatalytic activity then previous materials (81 mV dec−1 tafel slope and overpotential of 237 mV at 10 mAcm−2). The composite exhibits notable qualities, including extended stability lasting up to 100 h, a substantial electrochemically active surface area (ECSA) of 586.5 cm2, minimal charge transfer resistance (Rct) of 1.3 Ω, a low onset potential, a reasonably reduced overpotential, and a relatively modest Tafel slope. The synergistic interaction between CNTs and BiVO4 is responsible for electrocatalyst's exceptional catalytic efficiency and unique stability for 100-hour retaining both morphological and structural features, showcasing structural integrity of BiVO4/CNTs nano-composite. The objective of this research is to split water into its componentmolecules using a nano-composite made, and may also useful for future applications.