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

[Display omitted] • A facile BiVO 4 /CNTs nanocomposite is synthesized via Sono chemical strategy and employed comprehensively for OER capabilities. • It provides practical alternatives for constructing and tweaking a cost-effective electrocatalyst. • Results demonstrate that at 10 mA cm−2 current density, BiVO 4 /CNTs has lesser overpotential and Tafel slope value 237 mV and 81 mV dec−1 correspondingly. • The integrated composite BiVO 4 /CNTs exhibits remarkable stability and durability for 100 hours without any decrease in current density. The increasing demand of maintainable energy boosts researchers to develop reliable electrocatalysts for enhanced water splitting mechanisms. All the synthesized materials, including CNTs, BiVO 4 , and BiVO 4 /CNTs, were characterized utilizing a variety of methodologies to assist the structural, configurational, morphological, and topographical investigations. This work aims to create unique BiVO 4 /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 BiVO 4 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 component molecules using a nano-composite made, and may also useful for future applications. [ABSTRACT FROM AUTHOR]