Synergism of 1D/2D boride/MXene nanosheet heterojunctions for boosted overall water splitting

Abstract

Transition metal boride (TMB) as a new type of catalyst has attracted much attention in recent years. To further enhance their catalytic performance, much effort has been made on improving their electrical conductivity and specific surface area. Herein, we have constructed a heterojunction by anchoring 1D nickel boride (Ni_xB) nanoparticles on the surface of 2D N-doped Ti₃C₂ MXene (N₁₀TC) to overcome these limitations. The resulting heterojunction (Ni_xB/N₁₀TC) electrode exhibited improved catalytic activities and stability on water splitting. In particular, this Ni_xB/N₁₀TC electrode exhibits excellent stability within 50 h continued testing.