Photocatalytic activity of nano-sized Ag and Au metal-doped TiO2 embedded in rGO under visible light irradiation

被引：19
作者：
Khairy, M. [1 ,2 ]
Kamar, E. M. [1 ]
Mousa, M. A. [1 ]
机构：
[1] Benha Univ, Fac Sci, Chem Dept, Banha, Egypt
[2] Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Chem Dept, Riyadh 11623, Saudi Arabia
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2022年 / 286卷
关键词：
TiO2; Doping; Noble metals; Photocatalytic degradation; Kinetic; Wastewater treatment; DYE DEGRADATION; METHYLENE-BLUE; PERFORMANCE; SOLAR; NANOCOMPOSITE; NANOPARTICLES; PHOTOLUMINESCENCE; NANOSTRUCTURES; SPECTROSCOPY; DEPOSITION;
D O I：
10.1016/j.mseb.2022.116023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study looks at the structural, optical properties, and comparative visible light photocatalytic activity of Ag/ Au-TiO2 doped nanotubes and the impact of embedding them in rGO. The studied materials were characterized using XRD, SEM, TEM, XPS, BET, Raman spectra, diffuse reflectance spectroscopy (DRS), electrochemical impedance spectroscopy (EIS), and open-circuit voltage decay (OCVD), and photocurrent transient response (PCTR). The photocatalytic activity was found to increase in the order TAg,Au/rGO > TAg/rGO > TAu/rGO > TAg,Au > TAg > TAu > TrGO > TiO2 (T). Under optimal conditions, complete MB degradation is achieved in one hour. The kinetics of the photocatalytic reaction followed the first-order relationship. A photocatalytic mecha-nism has been proposed.
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页数：15
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