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|Title:||Application of silver-loaded composite track-etched membranes for photocatalytic decomposition of methylene blue under visible light|
|Authors:||Mashentseva, A. A.|
Aimanova, N. A.
Zdorovets, M. V.
|Citation:||Application of silver-loaded composite track-etched membranes for photocatalytic decomposition of methylene blue under visible light / A. A. Mashentseva, M. Barsbay, N. A. Aimanova, et al. — DOI 10.3390/membranes11010060 // Membranes. — 2021. — Vol. 11. — Iss. 1. — P. 1-12. — 60.|
|Abstract:||In this study, the use of composite track-etched membranes (TeMs) based on polyethylene terephthalate (PET) and electrolessly deposited silver microtubes (MTs) for the decomposition of toxic phenothiazine cationic dye, methylene blue (MB), under visible light was investigated. The structure and composition of the composite membranes were elucidated by scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction technique. Under visible light irradiation, composite membrane with embedded silver MTs (Ag/PET) displayed high photocatalytic efficiency. The effects of various parameters such as initial dye concentration, temperature, and sample exposure time on the photocatalytic degradation process were studied. The decomposition reaction of MB was found to follow the Langmuir-Hinshelwood mechanism and a pseudo-first-order kinetic model. The degradation kinetics of MB accelerated with increasing temperature and activation energy, Ea, was calculated to be 20.6 kJ/mol. The reusability of the catalyst was also investigated for 11 consecutive runs without any activation and regeneration procedures. The Ag/PET composite performed at high degradation efficiency of over 68% after 11 consecutive uses. © 2021 by the authors.|
ELECTROLESS TEMPLATE SYNTHESIS
METHYLENE BLUE DECOMPOSITION
TRACK-ETCHED COMPOSITE MEMBRANES
ENERGY DISPERSIVE SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
ACTIVATION AND REGENERATIONS
LANGMUIR HINSHELWOOD MECHANISM
PHOTO CATALYTIC DEGRADATION
POLYETHYLENE TEREPHTHALATES (PET)
PSEUDO-FIRST ORDER KINETIC MODEL
X-RAY DIFFRACTION TECHNIQUES
|metadata.dc.description.sponsorship:||The research titled ?Development of functionalized composite track-etched membranes for environmental applications? (grant No AP08855527) was funded by the Ministry of Education and Science of the Republic of Kazakhstan. M.V.Z. acknowledges the International Atomic Energy Agency (IAEA) for support under coordinated research project F22070 (IAEA Research Contract No: 23152).|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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