Preparation and Photocatalytic Performance of MWCNTs/TiO2 Nanocomposites for Degradation of Aqueous Substrate

被引：11

作者：

Duan, Qiannan ^{[1
]}

Lee, Jianchao ^{[1
]}

Liu, Yansong ^{[1
]}

Qi, Hailang ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Coll Tourism & Environm, Xian 710062, Peoples R China

来源：

JOURNAL OF CHEMISTRY | 2016年 / 2016卷

基金：

中国国家自然科学基金;

关键词：

TITANIUM-DIOXIDE; WATER; NANO-TIO2; MEMBRANE;

D O I：

10.1155/2016/1262017

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, multiwalled carbon nanotubes (MWCNTs)/TiO2 nanocomposites were obtained by constant volumetric wet impregnation processes. The prepared catalysts were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The effect of reaction conditions on photocatalytic performance of the catalysts was investigated by the degradation of methyl orange (MO) under UV irradiation, in a new type of reactor with unique structure. The results showed that the prepared nanocomposite exhibited higher MO degradation efficiency than that of pure nano-TiO2. Besides, in batch experiments of influencing factors, including ionic strength, oxidant amount, and response times, the presence of H2O2 would contribute to increasing the MO degradation rate of MWCNTs/TiO2 samples. Ionic concentration and long reaction times are adverse to the MO degradation in the processes.

引用

页数：8

共 27 条

[1]

[Anonymous], 2012, ARCH APPL SCI RES

[2]

Bandas C, 2012, ENVIRON ENG MANAG J, V11, P511

[3] Photocatalytic TiO2 films and membranes for the development of efficient wastewater treatment and reuse systems [J].

Choi, Hyeok ;

Stathatos, Elias ;

Dionysiou, Dionysios D. .

DESALINATION, 2007, 202 (1-3) :199-206

[4] Combined Factors Influencing the Aggregation and Deposition of nano-TiO2 in the Presence of Humic Acid and Bacteria [J].

Chowdhury, Indranil ;

Cwiertny, David M. ;

Walker, Sharon L. .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2012, 46 (13) :6968-6976

[5] Photocatalytic hydrogen generation using a nanocomposite of multi-walled carbon nanotubes and TiO2 nanoparticles under visible light irradiation [J].

Dai, Ke ;

Peng, Tianyou ;

Ke, Dingning ;

Wei, Bingqing .

NANOTECHNOLOGY, 2009, 20 (12)

[6] Novel visible light-induced g-C3N4/Bi2WO6 composite photocatalysts for efficient degradation of methyl orange [J].

Ge, Lei ;

Han, Changcun ;

Liu, Jing .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 108 (1-2) :100-107

[7] Molecular Design of Unsymmetrical Squaraine Dyes for High Efficiency Conversion of Low Energy Photons into Electrons Using TiO2 Nanocrystalline Films [J].

Geiger, Thomas ;

Kuster, Simon ;

Yum, Jun-Ho ;

Moon, Soo-Jin ;

Nazeeruddin, Mohammad K. ;

Graetzel, Michael ;

Nueesch, Frank .

ADVANCED FUNCTIONAL MATERIALS, 2009, 19 (17) :2720-2727

[8] Properties of O2•- and OH• formed in TiO2 aqueous suspensions by photocatalytic reaction and the influence of H2O2 and some ions [J].

Hirakawa, T ;

Nosaka, Y .

LANGMUIR, 2002, 18 (08) :3247-3254

[9] GROWTH OF CARBON NANOTUBES [J].

IIJIMA, S .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1993, 19 (1-2) :172-180

[10] TiO2 nanoparticles assembled on graphene oxide nanosheets with high photocatalytic activity for removal of pollutants [J].

Jiang, Guodong ;

Lin, Zhifen ;

Chen, Chao ;

Zhu, Lihua ;

Chang, Qing ;

Wang, Nan ;

Wei, Wei ;

Tang, Heqing .

CARBON, 2011, 49 (08) :2693-2701

← 1 2 3 →