Activities of BiFeO3/carbon-dots catalysts in piezo-photocatalytic degradation of ciprofloxacin upon light/ultrasonic excitation

Zhang, Xiaojian; Zhang, Zhiqin; Long, Kexin; Yuan, Honglei; Sun, Xianke

doi:10.1016/j.ultsonch.2024.106770

Cited by 4 publications

(1 citation statement)

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“…However, it is somewhat difficult to synthesize phase-pure BiFeO 3 , since it has a narrow temperature range of phase stabilization [ 9 ]. Until now, several BiFeO 3 -based heterojunction structures, including In 2 O 3 /BiFeO 3 [ 8 ], ZnIn 2 S 4 /BiFeO 3 [ 10 ], and Carbon-dots/BiFeO 3 [ 11 ] have been constructed. For the synthesis process of metal oxide-based compounds, the sonochemical process can be considered as an effective route due to the simplicity of its equipment, the rapid particle formation process assisted by intense ultrasonic energy, and the ease of doping during the process [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Er-Doped BiVO4/BiFeO3 Nanocomposites Synthesized via Sonochemical Process and Their Piezo-Photocatalytic Application

Kansaard,

Songpanit,

Noonuruk

et al. 2024

Nanomaterials

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In this work, Er-doped BiVO4/BiFeO3 composites are prepared using the sonochemical process with a difference of rare earth loading compositions. The crystallinity and chemical and morphological structure of as-synthesized samples were investigated via X-ray diffraction, Raman scattering, and electron microscopy, respectively. The diffuse reflectance technique was used to extract the optical property and calculate the optical band gap of the composite sample. The piezo-photocatalytic performance was evaluated according to the decomposition of a Rhodamine B organic compound. The decomposition of the organic compound was achieved under ultrasonic bath irradiation combined with light exposure. The Er-doped BiVO4/BiFeO3 composite heterojunction material exhibited significant enhancement of the piezo-photocatalytic activity under both ultrasonic and light irradiation due to the improvement in charge generation and separation. The result indicates that Er dopant strongly affects the phase transformation, change in morphology, and alternation in optical band gap of the BiVO4 matrix. The incorporation of BiFeO3 in the composite form with BiVO4 doped with 1%Er can improve the photocatalytic performance of BiVO4 via piezo-induced charge separation and charge recombination retardment.

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