Anchoring Mechanism of ZnO Nanoparticles on Graphitic Carbon Nanofiber Surfaces through a Modified Co-Precipitation Method to Improve Interfacial Contact and Photocatalytic Performance

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
Gowra Raghupathy DillipMoo Hwan Cho

Abstract

A facile three-step co-precipitation method is developed to synthesize graphitic carbon nanofibers (CNFs) decorated with ZnO nanoparticles (NPs). By interchanging intermediate steps of the reaction processes, two kinds of nanohybrids are fabricated with stark morphological and physicochemical differences. The morphologies differ because of the different chemical environments of the NP/nanocluster formation. The hybrid with larger and non-uniform ZnO nanocluster size is formed in liquid phase and resulted in considerable interfacial defects that deteriorate the charge-transfer properties. The hybrid with smaller and uniform ZnO NPs was formed in a dry solid phase and produced near-defect-free interfaces, leading to efficient charge transfer for superior photocatalytic performance. The results broaden the understanding of the anchoring/bonding mechanism in ZnO/CNF hybrid formation and may facilitate further development of more effective exfoliation strategies for the preparation of high-performance composites/hybrids.

References

Mar 18, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Mrinal DuttaDurga Basak
Feb 5, 2011·ACS Applied Materials & Interfaces·Jingbo MuYichun Liu
Aug 19, 2011·Journal of the American Chemical Society·Rosanna LarcipreteSilvano Lizzit
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Citations

Nov 20, 2016·Luminescence : the Journal of Biological and Chemical Luminescence·G R DillipS W Joo
Mar 23, 2021·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Ghada G AbdoAhmed A Elzatahry

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