Journal
NEW JOURNAL OF CHEMISTRY
Volume 42, Issue 1, Pages 681-687Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nj03707d
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Funding
- National Natural Science Foundation of China [21471040]
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Semiconductor 2D-composite heterostructures are of great interest in water splitting due to their unique structure. In this work, we design and synthesize 2D-composite HCa2Nb3O10/CaNb2O6 (HCNO/CNO) heterostructured nanosheets for the first time through sintering with a subsequent ion-exchange procedure. The achievement of such a 2D-composite nanostructure is attributed to the similar crystalline structure and intercalation-exfoliation of the layered bulk by employing tetra-n-butylammonium hydroxide (TBA(+)OH(-)). Furthermore, the 2D-composite structure contributes to increasing the interfacial contact area and lattice mismatch occurring in the heterostructure. Benefiting from the construction of a heterostructure and the unique structure characteristics, the as-prepared 2D-composite HCNO/CNO nanosheets exhibit rapid photoinduced charge carrier separation and transfer, leading to significantly enhanced photo-electrochemical current response as well as photocatalytic hydrogen evolution.
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