Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 22, Issue 6, Pages -Publisher
SPRINGER
DOI: 10.1007/s11051-020-04881-z
Keywords
Zinc oxide; Semiconductors; Polyol process; Photocatalysis; Nanostructures; Environmental effects
Categories
Funding
- Hubei Provincial Natural Science Foundation [2019CFB386]
- Central Committee Guides Local Science and Technology Development Special Project of Hubei Province [2019ZYYD073]
- Technology Innovation Program of Wuhan Textile University
- Australia Research Council [DE180101478]
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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 electronmicroscopy, X-ray photoelectron spectroscopy, and nitrogen adsorption measurements. By tailoring the volume ratio of ethylene glycol to water, corallike, 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 center dot 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.
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