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Engineered zinc oxide nanoaggregates for photocatalytic removal of ciprofloxacin with structure dependence

Journal Article


Abstract


  • A simple and environment-friendly approach to prepare zinc oxide nanoaggregates was achieved by employing ethylene glycol–H2O as the reaction medium. The composition and structure of the as-fabricated ZnO products were confirmed using X-ray diffraction, scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, and nitrogen adsorption measurements. By tailoring the volume ratio of ethylene glycol to water, coral-like, flower-like, and nanoparticulate ZnO nanoaggregates were successfully synthesized. The impact of the structure of the as-obtained ZnO nanoaggregates on the photocatalytic degradation of ciprofloxacin was further studied. Under simulated solar light irradiation, the photocatalytic removal rate of coral-like, flower-like, and nanoparticulate ZnO nanoaggregates for ciprofloxacin was 45%, 80%, and 90%, respectively. The reactive species trapping experiment result indicated that the generated holes, OH−, and ·O2− active species mainly contributed to the degradation of ciprofloxacin. On the basis of photoluminescence spectra and photo/electrochemical measurement results, the prevention of electron-hole recombination and the rapid charge transfer upon the ZnO nanoparticle aggregates resulted in their efficient photocatalytic activity. [Figure not available: see fulltext.].

Publication Date


  • 2020

Citation


  • Xiong, J., Li, W., Zhao, K., Li, W., & Cheng, G. (2020). Engineered zinc oxide nanoaggregates for photocatalytic removal of ciprofloxacin with structure dependence. Journal of Nanoparticle Research, 22(6). doi:10.1007/s11051-020-04881-z

Scopus Eid


  • 2-s2.0-85085979493

Web Of Science Accession Number


Volume


  • 22

Issue


  • 6

Abstract


  • A simple and environment-friendly approach to prepare zinc oxide nanoaggregates was achieved by employing ethylene glycol–H2O as the reaction medium. The composition and structure of the as-fabricated ZnO products were confirmed using X-ray diffraction, scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, and nitrogen adsorption measurements. By tailoring the volume ratio of ethylene glycol to water, coral-like, flower-like, and nanoparticulate ZnO nanoaggregates were successfully synthesized. The impact of the structure of the as-obtained ZnO nanoaggregates on the photocatalytic degradation of ciprofloxacin was further studied. Under simulated solar light irradiation, the photocatalytic removal rate of coral-like, flower-like, and nanoparticulate ZnO nanoaggregates for ciprofloxacin was 45%, 80%, and 90%, respectively. The reactive species trapping experiment result indicated that the generated holes, OH−, and ·O2− active species mainly contributed to the degradation of ciprofloxacin. On the basis of photoluminescence spectra and photo/electrochemical measurement results, the prevention of electron-hole recombination and the rapid charge transfer upon the ZnO nanoparticle aggregates resulted in their efficient photocatalytic activity. [Figure not available: see fulltext.].

Publication Date


  • 2020

Citation


  • Xiong, J., Li, W., Zhao, K., Li, W., & Cheng, G. (2020). Engineered zinc oxide nanoaggregates for photocatalytic removal of ciprofloxacin with structure dependence. Journal of Nanoparticle Research, 22(6). doi:10.1007/s11051-020-04881-z

Scopus Eid


  • 2-s2.0-85085979493

Web Of Science Accession Number


Volume


  • 22

Issue


  • 6