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Sonochemical synthesis, characterization, and infrared-driven photocatalytic performance of 2%Er/x%Yb co-doped BiVO4 nanoparticles (x=2–10%)
Author(s)
Kansaard, Thanaphon
Noinonmueng, Tanisara
Boondok, Dungcharoen
Wechprasit, Tirapat
Wattanawikkam, Chakkaphan
Jayasankar, C. K.
Kagola, Upendra Kumar
Date Issued
November 1, 2024
Type
Article
Abstract
This study investigates the influence of Yb co-doping on the photocatalytic performance of 2% Er-doped BiVO4 nanoparticles under infrared light for wastewater treatment. Er/Yb co-doping induces a phase transformation from monoclinic to tetragonal BiVO4, significantly enhancing infrared light absorption and photocatalytic activity. The optimal Yb concentration for maximizing activity is found to be 2%, achieving a one-order-of-magnitude improvement compared to undoped BiVO4. Up-conversion processes involving Yb and Er ions play a crucial role in this enhancement, converting low-energy infrared photons into higher-energy visible emissions that drive photocatalysis. These findings demonstrate a promising strategy for developing highly efficient and sustainable photocatalysts for wastewater treatment utilizing the abundant yet underexplored infrared region of the solar spectrum.
Citation
Radiation Physics and Chemistry, 224, 2024