Photocatalytic degradation of Rhodamine B over a novel mesoporous titanosilicate/g-C3N4 nanocomposite under direct sunlight irradiation

被引:29
作者
Adepu, Ajay Kumar [1 ]
Anumula, Rajini [1 ]
Narayanan, Venkatathri [1 ]
机构
[1] Natl Inst Technol, Dept Chem, Warangal 506004, Telangana, India
关键词
Mesoporous; Titano silicate; Carbon nitride; Rhodamine B (RhB); Photocatalysis; VISIBLE-LIGHT IRRADIATION; CARBON NITRIDE; METHYL-ORANGE; PERFORMANCE; CHALLENGES; COMPOSITE; CATALYSTS; ETS-10; SILICA; G-C3N4;
D O I
10.1016/j.micromeso.2017.03.046
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A novel heterojunction of mesoporous titanosilicate/graphitic carbon nitride (TSCN) inorganic-organic hybrid composite has been developed. The synthesized mesoporous TSCN nanocomposites were characterized by various analytical techniques for structural and chemical properties. Finely distributed porous titanosilicate was observed on the surface of the g-C3N4 from the FE-SEM and TEM analysis. More significantly, the TSCN nanocomposite exhibited enhanced photocatalytic activity in the degradation of Rhodamine B (RhB) under sunlight irradiation. The optimum photocatalytic activity of TSCN10 at 10 wt% of g-C3N4 under visible light is almost 5 and 3 fold higher than pure titanosilicate (TS) and pure g-C3N4 (CN) respectively. The synthesized photo-catalysts are highly stable even after five successive experimental runs. The improved photocatalytic performance of the TSCN10 hybrid nanocomposite photo-catalysts under visible light irradiation was due to the high surface area and synergistic effect. Therefore, TSCN10 hybrid photo-catalyst is a promising material for energy conversion and environmental remediation. (C) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码:86 / 94
页数:9
相关论文
共 44 条
[1]   Fabrication of hollow silica microspheres utilizing a hydrothermal approach [J].
Abdelaal, Haitham Mohammad .
CHINESE CHEMICAL LETTERS, 2014, 25 (04) :627-629
[2]   Photocatalytic effects of titania supported nanoporous MCM-41 on degradation of methyl orange in the presence of electron acceptors [J].
Anandan, Sambandam .
DYES AND PIGMENTS, 2008, 76 (02) :535-541
[3]  
[Anonymous], PHYS CHEM
[4]  
[Anonymous], 1992, J NATURE, V359, P710, DOI DOI 10.1038/359710A0
[5]   Controllable synthesis and photocatalytic activities of rod-shaped mesoporous titanosilicate composites with varied aspect ratios [J].
Chen, Feng-Jiao ;
Shao, Chang-Wang ;
Zhao, Min-Nan ;
Bu, Zhao-Sheng ;
Zhang, Yan ;
Dai, Xiao-Nan ;
Zhou, Guo-Wei .
CHINESE CHEMICAL LETTERS, 2014, 25 (06) :962-966
[6]   Semiconductor-based Photocatalytic Hydrogen Generation [J].
Chen, Xiaobo ;
Shen, Shaohua ;
Guo, Liejin ;
Mao, Samuel S. .
CHEMICAL REVIEWS, 2010, 110 (11) :6503-6570
[7]   A novel route for preparation of Ti-containing mesoporous silica with high catalytic performance by using a molecular precursor tetrakis(tris-tert-butoxysiloxy)titanium [J].
Choi, Kwang-Min ;
Yokoi, Toshiyuki ;
Tatsumi, Takashi ;
Kuroda, Kazuyuki .
JOURNAL OF MATERIALS CHEMISTRY A, 2013, 1 (07) :2485-2494
[8]   Highly ordered Ti-SBA-15: Efficient H2 adsorbent and photocatalyst for eco-toxic dye degradation [J].
Das, Swapan K. ;
Bhunia, Manas K. ;
Bhaumik, Asim .
JOURNAL OF SOLID STATE CHEMISTRY, 2010, 183 (06) :1326-1333
[9]   Immobilization of Polymeric g-C3N4 on Structured Ceramic Foam for Efficient Visible Light Photocatalytic Air Purification with Real Indoor Illumination [J].
Dong, Fan ;
Wang, Zhenyu ;
Li, Yuhan ;
Ho, Wing-Kei ;
Lee, S. C. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2014, 48 (17) :10345-10353
[10]   Photocatalytic materials: recent achievements and near future trends [J].
Fresno, Fernando ;
Portela, Raquel ;
Suarez, Silvia ;
Coronado, Juan M. .
JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (09) :2863-2884