Facile synthesis of flower-like CQDs/S-Bi4O5Br2 composites as a highly efficient visible-light response photocatalyst for ciprofloxacin degradation

Weng, Peijie; Cai, Qing; Wu, Huadong; Zhang, Linfeng; Wu, Kun; Guo, Jia

doi:10.1007/s10853-021-06661-z

Cited by 11 publications

(1 citation statement)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the photocatalytic role of pure Bi 4 O 5 Br 2 is limited, with low visible light utilization efficiency and high complexation rate of a photogenerated electron-hole pair [11,12]. Therefore, modifications are needed to improve the catalytic activity, including changing the morphology [13], constructing heterojunctions [14][15][16], doping [17,18], and introducing surface defects [19,20]. Selecting ideal semiconductors with suitable energy band structure to construct heterojunctions with excellent photocatalytic performance is of great significance.…”

Section: Introductionmentioning

confidence: 99%

Construction of Zn0.5Cd0.5S/Bi4O5Br2 Heterojunction for Enhanced Photocatalytic Degradation of Tetracycline Hydrochloride

Luo,

Shen,

Jin

2024

Inorganics

View full text Add to dashboard Cite

The development of efficient catalysts with visible light response for the removal of pollutants in an aqueous environment has been a hotspot in the field of photocatalysis research. A Zn0.5Cd0.5S (ZCS) nanoparticle/Bi4O5Br2 ultra-thin nanosheet heterojunction was constructed by ultrasound-assisted solvothermal method. The morphology, structure, and optoelectronic properties of the composite were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and UV–vis diffuse reflectance spectra. Under simulated visible light illumination, the photocatalytic performance was evaluated through degradation of tetracycline hydrochloride. Results show that the degradation effect by the optimum ZCS/Bi4O5Br2 catalyst is superior to pure materials with the kinetic constant that is 1.7 and 9.6 times higher than those of Bi4O5Br2 and ZCS, and also has better stability and reusability. Trapping experiments and electron paramagnetic resonance tests find that free radicals in the photocatalytic system are superoxide radicals and holes. This work provides a referable idea for the development of more efficient and recyclable photocatalysts.

show abstract