文摘
Highly efficient and noble metal-free NiS modified MnxCd1-xS nanocomposites were synthesized via a simple direct in suit precipitation process. Photocatalytic H2 evolution activity of 0.3 wt% NiS/Mn0.5Cd0.5S is nearly 18.6 and 3.1 times than that of pure Mn0.5Cd0.5S and 1.0 wt% Pt/Mn0.5Cd0.5S. NiS acts as electron-trapping center and high active site to prevent charge recombination, and improve the photocatalytic H2 evolution activity. Low cost and earth-abundant NiS can replace noble metal Pt as a highly efficient co-catalyst in photocatalytic H2 evolution. Due to the intimate contact, the photogenerated electrons in the CB of Mn0.5Cd0.5S can be easily transferred to the surface NiS nanoparticles.