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Issue 5, 2015
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Self-assembled 3D hierarchical sheaf-like Nb3O7(OH) nanostructures with enhanced photocatalytic activity

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Abstract

Novel three-dimensional (3D) hierarchical Nb3O7(OH) nanostructures with a sheaf-like nanoarchitecture were fabricated for the first time by a hydrothermal process. Interestingly, the nanosheafs are composed of nanorods with an average diameter of about 25 nm. The as-prepared 3D hierarchical nanostructures possess a high surface area of 77 m2 g−1 with pore diameters of ca. 4.2–12.5 nm. A possible growth mechanism based on the combined Ostwald ripening and self-assembly process was proposed. It is found that both the valence-band top and the conduction-band bottom consist of O 2p and Nb 4d orbitals. Importantly, the 3D hierarchical Nb3O7(OH) nanostructures exhibit enhanced photocatalytic activity for the degradation of Rhodamine B (RhB) under UV-visible light, which is attributed to the unusual hierarchical structure, high surface area, and hybridization of energy bands.

Graphical abstract: Self-assembled 3D hierarchical sheaf-like Nb3O7(OH) nanostructures with enhanced photocatalytic activity

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Publication details

The article was received on 07 Nov 2014, accepted on 08 Dec 2014 and first published on 10 Dec 2014


Article type: Paper
DOI: 10.1039/C4NR06580H
Nanoscale, 2015,7, 1963-1969

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    Self-assembled 3D hierarchical sheaf-like Nb3O7(OH) nanostructures with enhanced photocatalytic activity

    P. Hu, D. Hou, Y. Wen, B. Shan, C. Chen, Y. Huang and X. Hu, Nanoscale, 2015, 7, 1963
    DOI: 10.1039/C4NR06580H

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