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Green Synthesis of Silver Oxide Microparticles Using Green Tea Leaves Extract for an Efficient Removal of Malachite Green from Water: Synergistic Effect of Persulfate.
- Source :
- Catalysts (2073-4344); Feb2023, Vol. 13 Issue 2, p227, 21p
- Publication Year :
- 2023
-
Abstract
- The removal of water pollutants by photocatalysis is a promising technique, mainly due to its environmentally friendly and sustainable nature. In this study, the degradation of a recalcitrant organic pollutant, malachite green (MG), was investigated in water by a microstructured silver oxide photocatalyst. The silver oxide (Ag<subscript>2</subscript>O) microparticles (MPs) were synthesized by a low-cost, green method, mediated by green tea leaves extract. The surface, morphological and optical properties of the synthesized Ag<subscript>2</subscript>O MPs were determined by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) spectroscopy, and ultraviolet-visible (UV-visible) spectrophotometry. The synthesized Ag<subscript>2</subscript>O MPs showed good photoactivity, represented by 83% degradation of malachite green (MG) ([C]<subscript>0</subscript> = 0.4 mM, Ag<subscript>2</subscript>O loading = 0.1 g L<superscript>−1</superscript>) at neutral pH, in 3 h. Persulfate ions (PS) showed a strong synergistic effect on the efficiency of solar/Ag<subscript>2</subscript>O photocatalysis, represented by complete MG removal in 15 min, in the presence of 1.6 mM PS. The results revealed that solar/Ag<subscript>2</subscript>O, particularly solar/Ag<subscript>2</subscript>O/PS photocatalysis is a promising method for the elimination of toxic organic pollutants, such as malachite green, from the water environment. [ABSTRACT FROM AUTHOR]
- Subjects :
- MALACHITE green
SILVER oxide
TEA extracts
GREEN tea
MICROPOLLUTANTS
POISONS
Subjects
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 13
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 162086078
- Full Text :
- https://doi.org/10.3390/catal13020227