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Construction of 2D-composite HCa2Nb3O10/CaNb2O6 heterostructured photocatalysts with enhanced hydrogen production performance

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Abstract

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.

Graphical abstract: Construction of 2D-composite HCa2Nb3O10/CaNb2O6 heterostructured photocatalysts with enhanced hydrogen production performance

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Publication details

The article was received on 27 Sep 2017, accepted on 23 Nov 2017 and first published on 24 Nov 2017


Article type: Paper
DOI: 10.1039/C7NJ03707D
Citation: New J. Chem., 2018, Advance Article
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    Construction of 2D-composite HCa2Nb3O10/CaNb2O6 heterostructured photocatalysts with enhanced hydrogen production performance

    Y. Liu, Y. Zhou, C. Lv, C. Zhang, X. Jin, Q. Meng and G. Chen, New J. Chem., 2018, Advance Article , DOI: 10.1039/C7NJ03707D

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