Boosting Photocatalytic Performance of Inactive Rutile TiO2 Nanorods under Solar Light Irradiation: Synergistic Effect of Acid Treatment and Metal Oxide Co-catalysts

2017 ◽  
Vol 9 (28) ◽  
pp. 23602-23613 ◽  
Author(s):  
Love Kumar Dhandole ◽  
Mahadeo A. Mahadik ◽  
Su-Gyeong Kim ◽  
Hee-Suk Chung ◽  
Young-Seok Seo ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Metal Oxide ◽  
Acid Treatment ◽  
Photocatalytic Performance ◽  
Tio2 Nanorods ◽  
Light Irradiation ◽  
Solar Light ◽  
Rutile Tio2 ◽  
Co Catalysts ◽  
Solar Light Irradiation

scholarly journals Facile synthesis of ZnO/CuO/Ag2O ternary metal oxide nanocomposite for effective photodegradation of organic water pollutants

2021 ◽  
Author(s):  
Parmeshwar Lal Meena ◽  
Krishna Poswal ◽  
Ajay Kumar Surela ◽  
Jitendra Kumar Saini
Keyword(s):  
Metal Oxide ◽  
Organic Dyes ◽  
Light Irradiation ◽  
Solar Light ◽  
Light Illumination ◽  
K Value ◽  
Solar Light Irradiation ◽  
Ternary Nanocomposite ◽  
Vis Spectroscopy ◽  
Ternary Metal

Abstract The current study is focused on fabrication of a ternary metal oxide nanocomposite (ZnO/CuO/Ag2O) as an efficient and superior photocatalyst by step wise implanting of p-type of CuO and Ag2O semiconductors onto n-type of semiconductor (ZnO) via chemical method. The structural and textural characteristics of manufactured samples were characterized by X-ray diffraction (XRD), Fourier Transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy combine electron dispersive spectroscopy (FESEM-EDS) and UV-vis spectroscopy. The photocatalytic performance of the fabricated ternary nanocomposite was tested against the photocatalytic degradation of Crystal violet (CV) and Rhodamine B (RhB) organic dyes under solar light irradiation. The ternary nanocomposite demonstrated about 99.05% and 97.38% degradation efficiencies for CV and RhB dyes under solar light irradiation in a time period of 105 min. The calculated rate constants (k, min−1) for degradation under solar light over the ZnO/CuO/Ag2O nanocomposite were 4.26 and 3.61 times higher than the k value obtained over ZnO nanoparticles for CV and RhB dyes, respectively. The main reactive species taken part in the photodegradation processes were •OH and •O2− over ZnO/CuO/Ag2O photocatalyst under solar light illumination. Further the recycle experiments confirm good reusability and photo-stability of ZnO/CuO/Ag2O ternary nanocomposite.

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