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  4. Sustainable synthesis, superior performance: Nanoflower-like α-Bi2O3 from solvent-free solid state for photocatalytic crystal violet degradation
 
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Sustainable synthesis, superior performance: Nanoflower-like α-Bi2O3 from solvent-free solid state for photocatalytic crystal violet degradation
Dr. Valdés-Morales, Héctor 
Facultad de Ingeniería 
Ravi, Aswini
Annamalai, Padmanaban
Sankar, Vigneshwaran
Achutharaman, K.
SaravanaVadivu, Arunachalam
MuthaiahPillai, VelayuthamPillai
Alharbi, Sulaiman
10.1016/j.jtice.2024.105413
Elsevier
2024
Background: The main goal of this work is to demonstrate the improvement of visible light absorption for water pollution applications while simultaneously ensuring efficient disintegration of the industrial crystal violet dye (CV) through photocatalytic degradation. This strategy aims to minimize the impact on the local ecosystem.
Methods: This study utilized a simple solvent-free and novel solid-state mixing technique to synthesize α-Bi2O3 with surfactant-containing urea (U) and citric acid (CA) at 600 ◦C. The physicochemical properties were utilized to investigate morphological, structural, textural properties, optical, and photostability, the long lifespan of photogenerated charge carriers of hole-electron pairs, and the visible light energy that caused them to disintegrate.
Findings: Significantly, the surfactant based on urea was successful in maturing a nanoflower-like α-Bi2O3 (U) with extremely high stability and a versatile application of photocatalysis crystal violet degradation at 83.9% within 60 min. The α-Bi2O3 (U) shows good long-term stability with a 94.8(%) relative standard deviation after the fifth cycle, and the mechanistic analyses were evaluated by trapping experiments. Furthermore, this work provides a strategy to design low-cost and high-efficiency novel methods for sustainable photocatalysts and further investigates environmental applications.
α-Bi2O3
Solvent-free synthesis
Surfactant
Crystal violet dye
Photocatalytic degradation
Eco-friendly applications
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