One-step hydrothermal synthesis and characterisation of SnO2 nanoparticle-loaded TiO2 nanotubes with high photocatalytic performance under sunlight

被引：31

作者：

Pham Van Viet ^{[1
]}

Tran Hong Huy ^{[1
]}

Nguyen Xuan Sang ^{[2
]}

Cao Minh Thi ^{[3
]}

Le Van Hieu ^{[1
]}

机构：

[1] Univ Sci, Fac Mat Sci, Nanomat Environm Applicat Lab, VNU HCMC, 227 Nguyen Van Cu St,Dist 5, Ho Chi Minh City 700000, Vietnam

[2] Saigon Univ, Fac Elect Telecommun, 273 An Duong Vuong St,Dist 5, Ho Chi Minh City 700000, Vietnam

[3] Ho Chi Minh City Univ Technol HUTECH, CM Thi Lab, 475A Dien Bien Phu St, Ho Chi Minh City 700000, Vietnam

来源：

JOURNAL OF MATERIALS SCIENCE | 2018年 / 53卷 / 05期

关键词：

TITANIUM-DIOXIDE; OXYGEN VACANCIES; RAMAN-SPECTRUM; QUANTUM DOTS; PHOTOLUMINESCENCE; ANATASE; WATER; NANOCOMPOSITE; DEGRADATION; SURFACE;

D O I：

10.1007/s10853-017-1762-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The enhancement of the photocatalytic activity of TiO2 nanotubes (TNTs), as a result of heterojunction formation through the addition of SnO2 nanoparticles (NPs) by a simple and straightforward one-step hydrothermal method, is shown. The structure and properties of the as-synthesised composite material are characterised using X-ray diffraction, transmission electron microscopy, field emission scanning electron microscopy, UV-Vis diffuse reflectance spectroscopy, Raman spectroscopy and photoluminescence spectroscopy. The SnO2/TNT heterojunction with extremely small SnO2 NPs adhered on the TNT surface was successfully synthesised by a one-step hydrothermal synthesis. The mechanism and factors affecting the photocatalytic activity were verified and clarified. Furthermore, the sample with 2% SnO2 precursor content has the highest photocatalytic activity with a methylene blue degradation efficiency of 74.2% for 180 min under sunlight irradiation.

引用

页码：3364 / 3374

页数：11

共 54 条

[1] Ti3+ states induced band gap reduction and enhanced visible light absorption of TiO2 nanotube arrays: Effect of the surface solid fraction factor [J].