Construction of 2D-composite HCa2Nb3O10/CaNb2O6 heterostructured photocatalysts with enhanced hydrogen production performance. (7th December 2017)

• Record Type: Journal Article
• Authors: Liu, Yue; Zhou, Yansong; Lv, Chade; Zhang, Congmin; Jin, Xiaoli; Meng, Qingqiang; Chen, Gang
• Is Part Of: New journal of chemistry. Volume 42:Number 1(2018)
• Page Start: 681
• Page End: 687
• Publication Date: 2017-12-07
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj03707d
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Semiconductor 2D-composite heterostructures are of great interest in water splitting due to their unique structure. 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 HCa2 Nb3 O10 /CaNb2 O6 (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.