Abstract
Heterostructured CdS-pillared H2Ti3O7 nanohybrids were prepared by the self-assembly of exfoliated trititanate nanosheets and CdS nanosol particles under the electrostatic interactions. It was revealed that the present nanohybrids were mesoporous with specific surface areas of about 90m2g−1. The nanohybrids exhibited high photocatalytic activity and good recurrence stability in the H2 evolution from water splitting. When the preparation molar ratio of H2Ti3O7/CdS was 2:1, the nanohybrid reached a high H2-evolution rate of 1523μmolh−1g−1 under a 300W Xe lamp irradiation, which was 13 times higher than the bare CdS. Apart from the wider spectral responsive range, the superior photocatalytic performance of the nanohybrids was predominantly attributed to the efficient photogenerated charge separation between the trititanate nanosheets and the encapsulated CdS nanoparticles.
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