Abstract
CoSe2, as a kind of co-catalyst, would replace noble metals element to dope pure CdS. The CoSe2/CdS photocatalyst could be synthesized by simple physical mixing. With the introduction of CoSe2, especially 30% CoSe2/CdS, hydrogen production would be about 500 μmol within 5 h, five times that of pure CdS under the same conditions. The CoSe2/CdS photocatalyst could bear four cycles of hydrogen evolution and sustain the hydrogen production, with a minor decrease. In other words, the electron transition velocity would surge along with the introduction of CoSe2 particles. The CoSe2 could be deemed as the predator and exit of electrons to inspire the detachment of the hole-electron pairs and relieve the recombination of the hole-electron pairs.
Highlights
A growing population and environmental deterioration face the challenge of energy diversity, instead of relying on fossil fuels
The quenching phenomenon would the radius, the larger the impedance is. It can be seen from the plot that 30% CoSe2 /CdS presented the culminate when the CoSe2 content was adjusted to 30%, which was consistent with photocatalytic H2 minimum radius compared with the others, which meant 30% CoSe2 /CdS had the lowest impedance evolution
The quenching phenomenon would culminate when the CoSe2 content was adjusted to 30%, which was consistent with photocatalytic H2 evolution
Summary
Ruizhou Gan 1,2,3 , Xiaohua Ma 1,2,3, *, Guorong Wang 1,2,3 and Zhiliang Jin 1,2,3, *. Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, China
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