Fabrication of carbon nanotube-loaded TiO2@AgI and its excellent performance in visible-light photocatalysis

被引:18
作者
Yang, Liu [1 ]
An, Yang [1 ]
Dai, Bin [1 ]
Guo, Xuhong [1 ]
Liu, Zhiyong [1 ]
Peng, Banghua [1 ]
机构
[1] Shihezi Univ, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut, Sch Chem & Chem Engn,Engn Res Ctr Mat Oriented Ch, Shihezi 832003, Peoples R China
基金
中国国家自然科学基金;
关键词
Titanium Dioxide; Carbon Nanotubes; Silver Iodide; Photocatalysis; REDUCED GRAPHENE OXIDE; HYDROGEN EVOLUTION; AGI NANOPARTICLES; FACILE SYNTHESIS; DOPED TIO2; NANOCOMPOSITES; DEGRADATION; OXIDATION; AGI/TIO2; COMPOSITES;
D O I
10.1007/s11814-016-0278-0
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Novel, visible light driven CNTs-TiO2@AgI hybrid materials were synthesized by a simple solvothermaldissolution-precipitation method, during which the acid vapor treated carbon nanotubes (CNTs) as template, AgI as sensitizer and TiO2 as the bridge unified them to form a ternary composite. The morphology and chemical components of as-prepared samples were characterized by high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). XRD and XPS characterizations indicated that anatase TiO2 and crystal AgI co-existed in the composite. HRTEM demonstrated CNTs were decorated with well-dispersed AgI and TiO2 nanoparticles (NPs), and TiO2 had an intimate connection with both AgI and CNTs. Diffusive reflectance UV-vis spectroscopy of CNTs-TiO2@AgI nanocomposite was extended to the whole UV-visible region due to adding of CNTs and AgI NPs. Degradation of Rhodamine B (RhB) polluted water using CNTs-TiO2@AgI NPs was carried out under visible light irradiation, and it showed higher degradation efficiency than CNTs-TiO2, TiO2@AgI, and CNTs@AgI NPs. The primary reason for the enhanced photocatalytic property was attributed to the synergic effect in CNTs-TiO2@AgI, which included the good adsorption ability and electrical conductivity of CNTs as well as the intimate connection and hetero-junctions among AgI, TiO2, and CNTs. Meanwhile, the as-prepared hybrid materials can be easily separated and reclaimed from the liquid phase, and the recycling tests indicated CNTs-TiO2@AgI had renewable performance.
引用
收藏
页码:476 / 483
页数:8
相关论文
共 64 条
[1]   Photocatalytic reduction of CO2 to hydrocarbons using AgBr/TiO2 nanocomposites under visible light [J].
Abou Asi, Mudar ;
He, Chun ;
Su, Minhua ;
Xia, Dehua ;
Lin, Long ;
Deng, Huiqi ;
Xiong, Ya ;
Qiu, Rongliang ;
Li, Xiang-zhong .
CATALYSIS TODAY, 2011, 175 (01) :256-263
[2]   Combination of TiO2-photocatalytic process and biological oxidation for the treatment of textile wastewater [J].
Ahmadi, Mojtaba ;
Amiri, Pegah ;
Amiri, Negar .
KOREAN JOURNAL OF CHEMICAL ENGINEERING, 2015, 32 (07) :1327-1332
[3]   Synthesis of three-dimensional AgI@TiO2 nanoparticles with improved photocatalytic performance [J].
An, Changhua ;
Jiang, Wen ;
Wang, Jizhuang ;
Wang, Shutao ;
Ma, Zhanhua ;
Li, Yanpeng .
DALTON TRANSACTIONS, 2013, 42 (24) :8796-8801
[4]   Enhanced solid-phase photocatalytic degradation of polyethylene by TiO2-MWCNTs nanocomposites [J].
An, Yang ;
Hou, Juan ;
Liu, Zhiyong ;
Peng, Banghua .
MATERIALS CHEMISTRY AND PHYSICS, 2014, 148 (1-2) :387-394
[5]   Synthesis and characterization of carbon nanotubes-treated Ag@TiO2 core-shell nanocomposites with highly enhanced photocatalytic performance [J].
An, Yang ;
Yang, Liu ;
Hou, Juan ;
Liu, Zhiyong ;
Peng, Banghua .
OPTICAL MATERIALS, 2014, 36 (08) :1390-1395
[6]   Highly efficient photocatalytic treatment of mixed dyes wastewater via visible-light-driven AgI-Ag3PO4/MWCNTs [J].
Cai, Li ;
Xu, Tan ;
Shen, Junying ;
Xiang, Wenxin .
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2015, 37 :19-28
[7]   Multiwalled Carbon Nanotubes Drive the Activity of Metal@oxide Core-Shell Catalysts in Modular Nanocomposites [J].
Cargnello, Matteo ;
Grzelczak, Marek ;
Rodriguez-Gonzalez, Benito ;
Syrgiannis, Zois ;
Bakhmutsky, Kevin ;
La Parola, Valeria ;
Liz-Marzan, Luis M. ;
Gorte, Raymond J. ;
Prato, Maurizio ;
Fornasiero, Paolo .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (28) :11760-11766
[8]   The electronic origin of the visible-light absorption properties of C-, N- and S-doped TiO2 nanomaterials [J].
Chen, Xiaobo ;
Burda, Clemens .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (15) :5018-+
[9]   A survey of photocatalytic materials for environmental remediation [J].
Di Paola, Agatino ;
Garcia-Lopez, Elisa ;
Marci, Giuseppe ;
Palmisano, Leonardo .
JOURNAL OF HAZARDOUS MATERIALS, 2012, 211 :3-29
[10]   PURIFICATION OF NANOTUBES [J].
EBBESEN, TW ;
AJAYAN, PM ;
HIURA, H ;
TANIGAKI, K .
NATURE, 1994, 367 (6463) :519-519