Comparison of the photocatalytic performance of TiO2/AC and TiO2/CNT nanocomposites for methyl orange photodegradation

被引：13
|
作者：
Wang, Liping [1 ,2 ]
Guo, Jingru [1 ,2 ]
Dang, Jingjing [1 ,2 ]
Huang, Xiaojun [1 ,2 ]
Chen, Si [1 ,2 ]
Guan, Weisheng [1 ,2 ]
机构：
[1] Changan Univ, Coll Environm Sci & Engn, Xian 710054, Shaanxi, Peoples R China
[2] Changan Univ, Minist Educ, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, Xian 710054, Shaanxi, Peoples R China
来源：
WATER SCIENCE AND TECHNOLOGY | 2018年 / 78卷 / 05期
关键词：
MO removal; photocatalytic; TiO2/AC; TiO2/CNT; DEGRADATION; DYES; CARBON;
D O I：
10.2166/wst.2018.374
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
To enhance the photocatalytic degradation efficiency of TiO2 on methyl orange (MO) removal, TiO2/AC (activated carbon) and TiO2/CNT (carbon nanotube) composites were synthesized. The prepared catalysts were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The photocatalytic performance of the obtained composites were investigated by the degradation of MO under UV irradiation (254 nm, 365 nm). The results revealed that the prepared nanocomposite showed higher MO degradation efficiency than pure nano-TiO2. Additionally, batch experiments of influencing factors, including H2O2 dosage, metal dopants, inorganic anions, chloride ion concentration and ultraviolet wavelength on the MO removal efficiency were also conducted. The results demonstrated that metal dopant and the presence of H2O2 significantly enhanced MO removal efficiency.
引用
收藏
页码：1082 / 1093
页数：12
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