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Ag2@WO3/MgAl Layered double hydroxide displayed superior adsorption and photocatalytic activity under visible light
Abstract An environmental friendly approach was utilized to remove pharmaceutical drugs from wastewater, employing adsorption and photocatalysis. The emphasis centered on synthesizing ternary composites comprising silver-deposited tungsten trioxide (Ag@WO3 2%), and MgAl layered double hydroxide (LDH) for the remediation of wastewater from pharmaceutical industry. Combining silver-loaded WO3 nanoparticles with MgAl LDH resulted in enhancement of adsorption and photocatalytic properties of MgAl LDH. The studies demonstrated that by incorporating Ag@WO3 into MgAl LDH, the ternary composites exhibited superior performance, achieving 88% tetracycline (TC) adsorption in 90 min, providing the best fit for the Langmuir model, suggesting monolayer adsorption following second-order kinetics and 77.9% of ciprofloxacin (CIP) degradation under visible light in 160 min with rate constant of 0.96 × 10−2 min−1 for pseudo-first-order kinetics. The enhancement was attributed to the increased surface area and electron-accepting ability of silver NPs (surface plasmonic effect). Additionally, the Ag2@WO3-LDH heterostructure exhibited high stability and recyclability for up to 5 cycles with little loss in performance. High-resolution mass spectrometry (HRMS) studies and free radical trapping experiments were conducted to reveal the intermediates generated during the degradation process, leading to the proposed mechanism via two degradation pathways.
Highlights Ag@WO3/MgAl LDH ternary type -II heterojunction for efficient pharmaceutical industry waste water remediation. Ag@WO3 heterojunction with LDH enhanced surface area for adsorption and Ag NPs amplifies visible light response of catalyst. Examination of photodegradation pathways through HRMS analysis and detection of active species. Catalyst shows good stability after four consecutive cycles of degradation.
Ag2@WO3/MgAl Layered double hydroxide displayed superior adsorption and photocatalytic activity under visible light
Abstract An environmental friendly approach was utilized to remove pharmaceutical drugs from wastewater, employing adsorption and photocatalysis. The emphasis centered on synthesizing ternary composites comprising silver-deposited tungsten trioxide (Ag@WO3 2%), and MgAl layered double hydroxide (LDH) for the remediation of wastewater from pharmaceutical industry. Combining silver-loaded WO3 nanoparticles with MgAl LDH resulted in enhancement of adsorption and photocatalytic properties of MgAl LDH. The studies demonstrated that by incorporating Ag@WO3 into MgAl LDH, the ternary composites exhibited superior performance, achieving 88% tetracycline (TC) adsorption in 90 min, providing the best fit for the Langmuir model, suggesting monolayer adsorption following second-order kinetics and 77.9% of ciprofloxacin (CIP) degradation under visible light in 160 min with rate constant of 0.96 × 10−2 min−1 for pseudo-first-order kinetics. The enhancement was attributed to the increased surface area and electron-accepting ability of silver NPs (surface plasmonic effect). Additionally, the Ag2@WO3-LDH heterostructure exhibited high stability and recyclability for up to 5 cycles with little loss in performance. High-resolution mass spectrometry (HRMS) studies and free radical trapping experiments were conducted to reveal the intermediates generated during the degradation process, leading to the proposed mechanism via two degradation pathways.
Highlights Ag@WO3/MgAl LDH ternary type -II heterojunction for efficient pharmaceutical industry waste water remediation. Ag@WO3 heterojunction with LDH enhanced surface area for adsorption and Ag NPs amplifies visible light response of catalyst. Examination of photodegradation pathways through HRMS analysis and detection of active species. Catalyst shows good stability after four consecutive cycles of degradation.
Ag2@WO3/MgAl Layered double hydroxide displayed superior adsorption and photocatalytic activity under visible light
Jemini (author) / Singh, Satnam (author) / Pal, Bonamali (author)
Applied Clay Science ; 250
2024-01-28
Article (Journal)
Electronic Resource
English
CdS-pillared CoAl-layered double hydroxide nanosheets with superior photocatalytic activity
| British Library Online Contents | 2015
CdS-pillared CoAl-layered double hydroxide nanosheets with superior photocatalytic activity
| British Library Online Contents | 2015