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Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
Published on: August 23, 2012
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Combining a hollow spherical structure and heterojunction promotes sustainable ZnO/CdS photocatalytic hydrogen
Abstract:
Here, a hollow spherical ZnO/CdS (HP) photocatalyst is prepared by combining template-directed method and chemical deposition technique. The synergy of the hollow spherical structure and heterojunction creates more active sites, promotes light utilization, and enhances charge separation. Therefore, ZnO/CdS (HP) achieves a hydrogen production rate of 75.09 mmol h-1 g-1, which is 34.6-, 17- and 3.2-fold that of CdS (Np), ZnO (HP), and ZnO/CdS (Ns), respectively.

