Fabrication of Ag/TiO2 Photocatalyst for the Treatment of Simulated Hospital Wastewater Under Sunlight

被引：24
作者：
Badawy, M. I. [1 ]
Souaya, Eglal M. R. [2 ]
Gad-Allah, Tarek A. [1 ]
Abdel-Wahed, Mahmoud S. [1 ]
Ulbricht, Mathias [3 ,4 ]
机构：
[1] Natl Res Ctr, Water Pollut Res Dept, Cairo 12311, Egypt
[2] Ain Shams Univ, Dept Chem, Fac Sci, Cairo 11566, Egypt
[3] Univ Duisburg Essen, Lehrstuhl Tech Chem 2, D-45117 Essen, Germany
[4] Univ Duisburg Essen, Ctr Water & Environm Res ZWU, D-45117 Essen, Germany
来源：
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY | 2014年 / 33卷 / 03期
关键词：
photocatalysis; doping; silver; TiO2; hospital wastewater; visible light; ENVIRONMENTAL PHARMACEUTICALS; TITANIA PHOTOCATALYSTS; DEGRADATION KINETICS; AQUEOUS SUSPENSION; TIO2; DECOLORIZATION; TEMPERATURE; MECHANISM; SYSTEMS;
D O I：
10.1002/ep.11869
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, photocatalytic activity of titanium dioxide was modified by doping with silver metal. This was done by simple preparation procedure at room temperature. Different preparation conditions were studied and their effects on photocatalytic activity were investigated. The obtained nanopowders were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), specific surface area measurement, UV-Visible absorption, and transmission electron microscope (TEM). Photocatalytic activities of the prepared samples under simulated sunlight were evaluated with respect to their efficiencies for the degradation of five pharmaceutical compounds commonly present in hospital wastewater. Prepared samples showed very high efficiency for photodegradation of the studied pharmaceutical compounds. Maximum photodegradation rate of the simulated hospital wastewater was obtained using 1000 ppm of the material with 0.1% Ag/TiO2 (weight ratio) calcined at 300 degrees C and pH 5. However, the best pH of the degradation of each pharmaceutical compound varies according to the pKa. (C) 2013 American Institute of Chemical Engineers Environ Prog, 33: 886-894, 2014
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页码：886 / 894
页数：9
相关论文
共 27 条
[1]   Preparation and characterization of nano silver-doped mesoporous titania photocatalysts for dye degradation [J].
Binitha, N. N. ;
Yaakob, Z. ;
Reshmi, M. R. ;
Sugunan, S. ;
Ambili, V. K. ;
Zetty, A. A. .
CATALYSIS TODAY, 2009, 147 :S76-S80
[2]   Effect of thermal treating temperature on characteristics of silver-doped titania [J].
Chai Li-yuan ;
Wei Shun-wen ;
Peng Bing ;
Li Zhu-ying .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2008, 18 (04) :980-985
[3]   THE ROLE OF METAL-ION DOPANTS IN QUANTUM-SIZED TIO2 - CORRELATION BETWEEN PHOTOREACTIVITY AND CHARGE-CARRIER RECOMBINATION DYNAMICS [J].
CHOI, WY ;
TERMIN, A ;
HOFFMANN, MR .
JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (51) :13669-13679
[4]   Development of visible light sensitive titania photocatalysts by combined nitrogen and silver doping [J].
El Saliby, Ibrahim ;
Erdei, Laszlo ;
Shon, Ho Kyong ;
Kim, Jong-Ho .
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2011, 17 (02) :358-363
[5]  
Fujishima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2
[6]   Contrast on COD photo-degradation in coking wastewater catalyzed by TiO2 and TiO2-TiO2 nanorod arrays [J].
Gao, Min-Jiang ;
Wang, Xi-Dong ;
Guo, Min ;
Zhang, Mei .
CATALYSIS TODAY, 2011, 174 (01) :79-87
[7]   Tailored titanium dioxide photocatalysts for the degradation of organic dyes in wastewater treatment: A review [J].
Han, Fang ;
Kambala, Venkata Subba Rao ;
Srinivasan, Madapusi ;
Rajarathnam, Dharmarajan ;
Naidu, Ravi .
APPLIED CATALYSIS A-GENERAL, 2009, 359 (1-2) :25-40
[8]   Hydrothermal growth of free standing TiO2 nanowire membranes for photocatalytic degradation of pharmaceuticals [J].
Hu, Anming ;
Zhang, Xu ;
Oakes, Ken D. ;
Peng, Peng ;
Zhou, Y. Norman ;
Servos, Mark R. .
JOURNAL OF HAZARDOUS MATERIALS, 2011, 189 (1-2) :278-285
[9]   Reactive dye degradation by combined Fe(III)/TiO2 catalyst and ultrasonic irradiation: Effect of Fe(III) loading and calcination temperature [J].
Jamalluddin, Nur Azimah ;
Abdullah, Ahmad Zuhairi .
ULTRASONICS SONOCHEMISTRY, 2011, 18 (02) :669-678
[10]   Removal of residual pharmaceuticals from aqueous systems by advanced oxidation processes [J].
Klavarioti, Maria ;
Mantzavinos, Dionissios ;
Kassinos, Despo .
ENVIRONMENT INTERNATIONAL, 2009, 35 (02) :402-417
123