Rational design of 0D Mn0.05Cd0.95S anchored on 3D NiSe2 nanoparticles
for efficient photocatalytic hydrogen production
Abstract
A novel effective 0D/3D nanohybrids of Mn0.05Cd0.95S/NiSe2
photocatalysts, which are formed by Mn0.05Cd0.95S nanoparticles anchored
on the outer surface of cubic NiSe2 in designed and prepared. The
optimum hydrogen evolution rate of the Mn0.05Cd0.95S/NiSe2 composite is
14.3 mmol h-1 g-1, which is 7.5 times higher than that of single
Mn0.05Cd0.95S. Structural analyses and experimental results reveal that
a little amount of NiSe2 can remarkably improve the photocatalytic
activity and the close contact of the 0D/3D composite catalyst also
plays an important role. Furthermore, NiSe2 can not only as both an
electron acceptor to capture electrons and inhibit the recombination of
electron-hole pairs, but also provide sufficient active sites to
facilitate the photocatalytic water-splitting reaction activity. This
work demonstrates that low-cost NiSe2 is a promising co-catalyst for
photocatalytic splitting of water to produce hydrogen.