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Beta-Cyclodextrin-triggered fabrication of broccoli-like ZnO nanoaggregates with enhanced photocatalytic capability

Journal Article


Abstract


  • © 2020 World Scientific Publishing Company. Nanocrystallite aggregates have great potential in semiconductor-based photocatalysis toward environmental pollution removal. In this work, we reported the fabrication of broccoli-like zinc oxide nanoaggregates in the presence of beta-cyclodextrin in ethylene glycol-H2O medium. The composition and structure of the as-obtained ZnO nanoaggregates were characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption. It was observed that the beta-cyclodextrin played an important role in the fabrication of such broccoli-like structure. A plausible formation mechanism was discussed on the basis of the controllable experiments. The photocatalytic performance of the products was studied through the photodegradation of rhodamine B under simulated sunlight irradiation. Compared to the spherical ZnO nanoaggregates and ZnO broken spheres, the broccoli-like ZnO exhibited superior photocatalytic efficiency. Based on the photocurrent and electrochemical measurement results, the higher separation efficiency of the photogenerated carriers and lower recombination efficiency of the photoinduced electron-hole pairs over the broccoli-like ZnO nanoaggregates contributed to their remarkable photocatalytic activity.

UOW Authors


  •   Xiong, Jinyan (external author)
  •   Li, Wei (external author)
  •   Zhao, Kai (external author)
  •   Li, Weijie
  •   Cheng, Gang (external author)

Publication Date


  • 2020

Citation


  • Xiong, J., Li, W., Zhao, K., Li, W. & Cheng, G. (2020). Beta-Cyclodextrin-triggered fabrication of broccoli-like ZnO nanoaggregates with enhanced photocatalytic capability. Functional Materials Letters,

Scopus Eid


  • 2-s2.0-85079170429

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/4023

Place Of Publication


  • Singapore

Abstract


  • © 2020 World Scientific Publishing Company. Nanocrystallite aggregates have great potential in semiconductor-based photocatalysis toward environmental pollution removal. In this work, we reported the fabrication of broccoli-like zinc oxide nanoaggregates in the presence of beta-cyclodextrin in ethylene glycol-H2O medium. The composition and structure of the as-obtained ZnO nanoaggregates were characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption. It was observed that the beta-cyclodextrin played an important role in the fabrication of such broccoli-like structure. A plausible formation mechanism was discussed on the basis of the controllable experiments. The photocatalytic performance of the products was studied through the photodegradation of rhodamine B under simulated sunlight irradiation. Compared to the spherical ZnO nanoaggregates and ZnO broken spheres, the broccoli-like ZnO exhibited superior photocatalytic efficiency. Based on the photocurrent and electrochemical measurement results, the higher separation efficiency of the photogenerated carriers and lower recombination efficiency of the photoinduced electron-hole pairs over the broccoli-like ZnO nanoaggregates contributed to their remarkable photocatalytic activity.

UOW Authors


  •   Xiong, Jinyan (external author)
  •   Li, Wei (external author)
  •   Zhao, Kai (external author)
  •   Li, Weijie
  •   Cheng, Gang (external author)

Publication Date


  • 2020

Citation


  • Xiong, J., Li, W., Zhao, K., Li, W. & Cheng, G. (2020). Beta-Cyclodextrin-triggered fabrication of broccoli-like ZnO nanoaggregates with enhanced photocatalytic capability. Functional Materials Letters,

Scopus Eid


  • 2-s2.0-85079170429

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/4023

Place Of Publication


  • Singapore