In Situ Construction of Near-Infrared Response Hybrid Up-Conversion Photocatalyst for Degrading Organic Dyes and Antibiotics

Unique nonlinear optical properties for converting low-energy incident light into high-energy radiation enable up-conversion materials to be employed in photocatalytic systems. An efficient near-infrared (NIR) response photocatalyst was successfully fabricated through a facile two-step method to loa...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2023-09, Vol.28 (18), p.6674
Main Authors: Yu, Lianqing, Wang, Yankun, Su, Xinhai, Liu, Chong, Xue, Kehui, Luo, Huihua, Zhang, Yaping, Zhu, Haifeng
Format: Article
Language:English
Subjects:
Antibiotics
charge–energy transfer
Composite materials
Efficiency
Energy
Ethylenediaminetetraacetic acid
Fluorides
Light
Methylene blue
Nanocrystals
Nanoparticles
Optical properties
Photocatalysis
photocatalyst
Photochemistry
Photodegradation
Pollutants
Radiation
Reactive oxygen species
Semiconductors
Spectrum allocation
Tetracycline
Tetracyclines
up-conversion
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Summary:Unique nonlinear optical properties for converting low-energy incident light into high-energy radiation enable up-conversion materials to be employed in photocatalytic systems. An efficient near-infrared (NIR) response photocatalyst was successfully fabricated through a facile two-step method to load BiOBr on the Nd3+, Er3+@NaYF4 (NE@NYF) up-conversion material. The NE@NYF can transform NIR into visible and UV light and promote charge–energy transfer in the semiconductor. Consequently, the as-obtained photocatalysts exhibit excellent photodegradation performance for rhodamine B dye (RhB) and tetracycline (TC) organic pollutants. About 98.9% of the RhB was decomposed within 60 min with the 20% NE@NYF-B sample, outperforming the pristine BiOBr (61.9%). In addition, the 20% NE@NYF-B composite could decompose approximately 72.7% of the organic carbon during a 10 h reaction, which was almost two-fold more than that of BiOBr. Meanwhile, a possible charge transfer mechanism is proposed based on the recombination of electron–hole pairs and reactive oxygen species. This work provides a rational hybrid structure photocatalyst for improving photocatalytic performance in the broadband spectrum and provides a new strategy for NIR light utilization.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules28186674