Design and Synthesis of Znco2o4/Cds for for Substaitially Improved Photocatalytic Hydrogen Production

ZnCo2O4 nanospheres are expected to be an efficient material to replace precious metal co-catalysts. In this experiment, co-catalyst was introduced to improve the hydrogen evolution performance of CdS nanorods. In this paper, co-catalyst ZnCo2O4 nanospheres were synthesized by hydrothermal method and calcination. CdS nanorods were synthesized by solvothermal method. A large number of CdS nanorods are anchored on the microspheres of ZnCo2O4. The experimental results of photocatalytic evolution prove the feasibility of our work. Finally, the amount of hydrogen evolution can reach 296.7 μmol, which is a little more than 2 times that of single CdS. The excellent optoelectronic of the composite samples were proved by means of characterization. In addition, ZnCo2O4 itself has good conductivity and low impedance, which shortens the way of charge transfer and broadens the absorptivity of light, thus enhancing the performance of photocatalytic hydrogen evolution. This design idea can be used as a reference for the development of high efficiency photocatalyst.