Ag nanoparticles loaded TiO2/MWCNT ternary nanocomposite: A visible-light-driven photocatalyst with enhanced photocatalytic performance and stability

被引：79
作者：
Chaudhary, Deepti [1 ]
Khare, Neeraj [1 ]
Vankar, V. D. [1 ]
机构：
[1] Indian Inst Technol Delhi, Dept Phys, Hauz Khas, New Delhi 110016, India
来源：
CERAMICS INTERNATIONAL | 2016年 / 42卷 / 14期
关键词：
MWCNT; Nanocomposite; Surface plasmon resonance; Photocatalytic activity; HYDROGEN-PRODUCTION; CARBON NANOTUBES; DEGRADATION; COMPOSITE; FABRICATION; ARRAYS;
D O I：
10.1016/j.ceramint.2016.07.056
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A visible light active photocatalyst, Ag/TiO2/MWCNT was synthesized by loading of Ag nanoparticles onto TiO2/MWCNT nanocomposite. The photocatalytic activity of Ag/TiO2/MWCNT ternary nanocomposite was evaluated for the degradation of methylene blue dye under UV and visible light irradiation. Ag/TiO2/MWCNT ternary nanocomposite exhibits (similar to 9 times) higher photocatalytic activity than TiO2/MWCNT and (similar to 2 times) higher than Ag/TiO2 binary nanocomposites under visible light irradiation. The enhancement in the photocatalytic activity is attributed to the synergistic effect between Ag nanoparticles and MWCNT, which enhance the charge separation efficiency by Schottky barrier formation at Ag/TiO2 interface and role of MWCNT as an electron reservoir. Effect of different scavengers on the degradation of methylene blue dye in the presence of catalyst has been investigated to find the role of photogenerated electrons and holes. Simultaneously, the Ag/TiO2/MWCNT shows excellent photocatalytic stability. This work highlights the importance of Ag/TiO2/MWCNT ternary nanocomposite as highly efficient and stable visible-light-driven photocatalyst for the degradation of organic dyes. (C) 2016 Published by Elsevier Ltd and Techna Group S.r.l.
引用
收藏
页码：15861 / 15867
页数：7
相关论文
共 38 条
[1]   Electrospinning Directly Synthesized Porous TiO2 Nanofibers Modified by Graphitic Carbon Nitride Sheets for Enhanced Photocatalytic Degradation Activity under Solar Light Irradiation [J].
Adhikari, Surya Prasad ;
Awasthi, Ganesh Prasad ;
Kim, Han Joo ;
Park, Chan Hee ;
Kim, Cheol Sang .
LANGMUIR, 2016, 32 (24) :6163-6175
[2]   Ternary g-C3N4/ZnO/AgCl nanocomposites: Synergistic collaboration on visible-light-driven activity in photodegradation of an organic pollutant [J].
Akhundi, Anise ;
Habibi-Yangjeh, Aziz .
APPLIED SURFACE SCIENCE, 2015, 358 :261-269
[3]  
[Anonymous], NANOTECHNOLOGY
[4]   Synthesis of Fe3O4 nanowire@CeO2/Ag nanocomposites with enhanced photocatalytic activity under sunlight exposure [J].
Chang, Jiali ;
Ma, Qingliang ;
Ma, Jianchao ;
Ma, Hongzhu .
CERAMICS INTERNATIONAL, 2016, 42 (10) :11827-11837
[5]   MWCNT/CdS Hybrid Nanocomposite for Enhanced Photocatalytic Activity [J].
Chaudhary, Deepti ;
Khare, Neeraj ;
Vankar, V. D. .
DAE SOLID STATE PHYSICS SYMPOSIUM 2015, 2016, 1731
[6]   Semiconductor-mediated photodegradation of pollutants under visible-light irradiation [J].
Chen, Chuncheng ;
Ma, Wanhong ;
Zhao, Jincai .
CHEMICAL SOCIETY REVIEWS, 2010, 39 (11) :4206-4219
[7]   Microwave-assisted synthesis of Ag@AgBr-intercalated K4Nb6O17 composite and enhanced photocatalytic degradation of Rhodamine B under visible light [J].
Cui, Wenquan ;
Wang, Huan ;
Liang, Yinghua ;
Han, Bingxu ;
Liu, Li ;
Hu, Jinshan .
CHEMICAL ENGINEERING JOURNAL, 2013, 230 :10-18
[8]   Enhanced visible-light-responsive photocatalytic property of PbS-sensitized K4Nb6O17 nanocomposite photocatalysts [J].
Cui, Wenquan ;
Shao, Meiyi ;
Liu, Li ;
Liang, Yinghua ;
Rana, Dipak .
APPLIED SURFACE SCIENCE, 2013, 276 :823-831
[9]   Photocatalytic degradation of methyl orange dye in water solutions in the presence of MWCNT/TiO2 composites [J].
Da Dalt, S. ;
Alves, A. K. ;
Bergmann, C. P. .
MATERIALS RESEARCH BULLETIN, 2013, 48 (05) :1845-1850
[10]   Preparation of TiO2/carbon nanotubes photocatalysts: The influence of the method of oxidation of the carbon nanotubes on the photocatalytic activity of the nanocomposites [J].
Djokic, Veljko R. ;
Marinkovic, Aleksandar D. ;
Mitric, Miodrag ;
Uskokovic, Petar S. ;
Petrovic, Rada D. ;
Radmilovic, Velimir R. ;
Janackovic, Djordje T. .
CERAMICS INTERNATIONAL, 2012, 38 (08) :6123-6129
1234