Highly dispersed NiS₂ quantum dots as a promising cocatalyst bridged by acetylene black significantly improved the photocatalytic H₂ evolution performance of g-C₃N₄ nanosheets

Abstract

We have successfully designed and synthesised a series of binary and ternary photocatalysts without noble metal cocatalysts for H2 generation by dispersing NiS2 and acetylene black nanoparticles on ultra-thin g-C3N4 nanosheets.

Enhanced visible-light-driven RhB removal with a Mo–Ni bimetallic sulfide/g-C3N4 nanosheet Schottky junction

“…The Schottky junction, as a type of heterojunction, can separate charge carriers, prevent backflow of electrons, and achieve maximum charge separation. 13,14 At present, noble metals (such as Pt 15 or Ag 16 ), transition metal phosphates (TMPs) (such as MoP 17 or Ni 2 P 18 ), transition metal sulfides (TMSs) (such as NiS 2 19 or MoS 2 20 ), as co-catalysts for g-C 3 N 4 , have been extensively studied in water splitting and pollutant degradation. However, loading TMPs on semiconductors usually leads to poor dispersion of TMPs, while noble metals are expensive and scarce.…”