Photoactive TiO2 Nanotubes and SILAR-Synthesized PbS/TiO2 Heterojunctions for Tetracycline Antibiotic Photodegradation

[EN] Titanium dioxide nanotubes (TiO2 NTs) decorated with lead sulfide nanoparticles (PbS NPs) were synthesized using the Successive Ionic Layer Adsorption and Reaction (SILAR) method at different number (n) of cycles (where n = 3, 5, and 8) and evaluated for tetracycline (TC) photodegradation under...

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Bibliographic Details
Authors: Jemai, Safa, Choubani, Karim, Hajjaji, Anouar, Sassi, Syrine, Ben Rabha, Mohamed, Almeshaal, Mohammed A., Bessais, Brahim, Marí, B.|||0000-0003-0001-419X
Format: article
Publication Date:2025
Country:España
Institution:Universitat Politècnica de València (UPV)
Repository:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Language:English
OAI Identifier:oai:riunet.upv.es:10251/230472
Online Access:https://riunet.upv.es/handle/10251/230472
Access Level:Open access
Keyword:Photocatalysis
Titanium dioxide
TiO2 nanotubes
PbS nanoparticles
Description
Summary:[EN] Titanium dioxide nanotubes (TiO2 NTs) decorated with lead sulfide nanoparticles (PbS NPs) were synthesized using the Successive Ionic Layer Adsorption and Reaction (SILAR) method at different number (n) of cycles (where n = 3, 5, and 8) and evaluated for tetracycline (TC) photodegradation under UV light. PbS NPs/TiO2 NTs heterojunctions prepared with 5 SILAR cycles showed optimal photocatalytic activity. Also, under optimized conditions, pure TiO2 NTs achieved complete TC photodegradation (99%) within 5 h under UV irradiation, with a proposed degradation mechanism based on holes (h(+)) and hydroxyl radicals (center dot OH) as dominant reactive species.

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