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

被引：26

作者：

Hu, Pei ^{[1
]}

Hou, Dongfang ^{[1
,2
]}

Wen, Yanwei ^{[1
]}

Shan, Bin ^{[1
]}

Chen, Chaoji ^{[1
]}

Huang, Yunhui ^{[1
]}

Hu, Xianluo ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

[2] Three Gorges Univ, Coll Mat & Chem Engn, Yichang 443002, Peoples R China

来源：

NANOSCALE | 2015年 / 7卷 / 05期

关键词：

CONTROLLABLE SYNTHESIS; BI4TI3O12; NANOFIBERS; SHAPE CONTROL; NANOCRYSTALS; PERFORMANCE; MECHANISM; GROWTH;

D O I：

10.1039/c4nr06580h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 m(2) 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.

引用

页码：1963 / 1969

页数：7

共 36 条

[1] Molecular recognition: from solution science to nano/materials technology [J].