Bi4Ti3O12 nanosheets/TiO2 submicron fibers heterostructures: in situ fabrication and high visible light photocatalytic activity

被引：134

作者：

Cao, Tieping ^{[1
,2
]}

Li, Yuejun ^{[1
,2
]}

Wang, Changhua ^{[1
]}

Zhang, Zhenyi ^{[1
]}

Zhang, Mingyi ^{[1
]}

Shao, Changlu ^{[1
]}

Liu, Yichun ^{[1
]}

机构：

[1] NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Key Lab UV Light Emitting Mat & Technol, Minist Educ, Changchun 130024, Peoples R China

[2] Baicheng Normal Univ, Dept Chem, Baicheng 137000, Jilin, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 19期

基金：

中国国家自然科学基金;

关键词：

TITANIUM-DIOXIDE; BISMUTH TITANATE; CONTROLLABLE SYNTHESIS; TIO2; DEGRADATION; NANOFIBERS; BI12TIO20; WATER; UV;

D O I：

10.1039/c1jm10343a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

In this paper, a facile two-step synthesis route combining an electrospinning method and hydrothermal technique has been accepted as a straightforward protocol for the exploitation of Bi4Ti3O12/TiO2 heterostructures which are composed of Bi4Ti3O12 nanosheets on the surface of TiO2 submicron fibers. The thickness of the as-grown nanosheets was about 20 nm and the size of the nanosheets increase with the increase of precursor concentration. Photocatalytic tests display that the Bi4Ti3O12/TiO2 heterostructures possess a much higher degradation rate of rhodamine B (RB) than the unmodified TiO2 submicron fibers under visible light. The enhanced photocatalytic activity can be attributed to the extended absorption in the visible light region resulting from the Bi4Ti3O12 nanosheets, and the effective separation of photogenerated carriers driven by the photoinduced potential difference generated at the Bi4Ti3O12/TiO2 junction interface.

引用

页码：6922 / 6927

页数：6

共 45 条

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