MOF based sheet-assembled flowers CdS-MoS2 composite for enhanced visible-light hydrogen production

MOF based CdS-MoS 2 composite had strong photoresponse and rich catalytic sites because of the adjustable morphology and large specific surface area. The CdS-MoS 2 composite was synthesized by using the first synthesized Cd-MOF as the precursor. The hydrogen evolution activity was evaluated under simulated light source. The rate of photocatalytic hydrogen production can improve by 47 times for doping 2.5% (w/w) MoS 2 compare to pure CdS. The catalyst was analyzed by the UV/vis absorption spectra, photoluminescence spectra, time-resolved photoluminescence spectra, transient photocurrent responses, electrochemical impedance spectra, Mott-Schottky test, etc. The results revealed that the CdS-MoS 2 can greatly enhance the separation and transport efficiency of photogenerated carriers, and shift the position of conduction band for the catalyst, resulting significantly improve the production of hydrogen. This work provides a new strategy for manufacturing of photocatalyst by MOFs.