1 research outputs found
In Situ Synthesis of CdS/Graphdiyne Heterojunction for Enhanced Photocatalytic Activity of Hydrogen Production
Hydrogen
production through artificial photosynthesis has been regarded as
a promising strategy for dealing with energy shortage and environmental
problems. In this work, graphdiyne (GD) was first introduced to the
visible-light catalytic system for hydrogen production, in which a
CdS/GD heterojunction was prepared through a simple in situ growth
process by adding CdÂ(AcO)<sub>2</sub> into a dimethyl sulfoxide (DMSO)
solution containing GD substrate. The as-prepared CdS/GD heterojunction
exhibits much higher performance for photocatalytic hydrogen evolution
compared to that of pristine GD and CdS nanoparticles. The photocatalytic
performance of CdS/GD heterostructure containing 2.5 wt % of GD (GD2.5)
is 2.6 times higher than that of the pristine CdS nanoparticles. The
enhanced catalytic performance can be ascribed to the formation of
CdS/GD heterojunction, in which the presence of GD can not only stabilize
CdS nanoparticles by preventing the agglomeration of CdS nanoparticles
but also act as a photogenerated hole transfer material for efficiently
separating photogenerated electron–hole pairs in CdS. Accordingly,
this work provides the potential of GD-derived materials for solar
energy conversion and storage