Abstract
To improve the efficiency of photocatalytic H2 evolution, comprehensive utilization of constructing heterojunction, designing structure and loading cocatalyst is imperative. In this study, a novel hollow sphere photocatalyst (MnOx/CdS/CuS) driven by constructing CdS/CuS heterojunction induced interfacial charge transfer (IFCT) and loading MnOx as cocatalyst was realized. CuS is deposited on the outside of the CdS shell, and MnOx is anchored on the inside, thus photoinduced electrons and holes were spatially separated due to this hollow spherical structure. As expected, the H2 evolution rate of MnOx/CdS/CuS is 18 times higher than that of pure CdS, besides, MnOx/CdS/CuS exhibited excellent stability in cycle experiments. This work opens a rational direction for design spatially separated photocatalytic systems to enhance photocatalytic H2 evolution.
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