Abstract
Photocatalytic hydrogen production from water splitting is a promising technology for overcoming energy and environmental issues. Herein, Mn0.4Cd0.6S/CuS composites were constructed for photocatalytic hydrogen production. The amount of CuS is optimized, and the composition and structure of the Mn0.4Cd0.6S/CuS composite are investigated via various characterization techniques. The formation of a p–n heterojunction between Mn0.4Cd0.6S and CuS and the built‐in electric field improve the separation efficiency of photogenerated electrons and holes and enhance the performance of photocatalytic hydrogen production. When the content of CuS is 5 wt%, Mn0.4Cd0.6S/5CuS presents the best photocatalytic hydrogen production rate of 22.10 mmol h−1 g−1, which is 3.0 times greater than that of Mn0.4Cd0.6S, and the apparent quantum yield reaches 7.82% at 400 nm. Combined with the activity test and characterization results, the reaction mechanism of photocatalytic hydrogen production over the Mn0.4Cd0.6S/CuS composite is proposed.
Published Version
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