Enriched Surface Oxygen Vacancies of CeO2 Nanosheets: Surfactant Free Synthesis at Room Temperature and its Enhanced Anti‐bacterial Property

Author:

Javed Kanwal1,Bian Xiaona1,Ren Yufang1,Kousar Sobia2,Ullah Zafar Fahad3,Li Xue1ORCID

Affiliation:

1. School of Chemistry and Chemical Engineering University of Jinan 336 West Road of Nan Xinzhuang Jinan 250022 P. R. China

2. School of Material Science and Engineering University of Jinan 336 West Road of Nan Xinzhuang Jinan 250022 P. R. China

3. University of Engineering and Technology, University of Peshawar Peshawar 25000 Pakistan

Abstract

AbstractIn this work, flower shape cerium oxide (CeO2) nanosheets were synthesized at room temperature through a facile precipitation method without adding any surfactant. The synthesized nanosheets were characterized by scanning electron microscope (SEM), high resolution transmission electron microscope (HRTEM), Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffractometry (XRD) and X‐ray photoelectron spectroscopy (XPS). Results showed that the CeO2 nanosheets form a petal‐like morphology and have fluorite crystal structure with no crystal phase impurity while the average crystallite size of nanosheets i. e. ~10 nm. The CeO2 nanosheets are applied as an antimicrobial agent and the antibacterial property against G+ and G bacteria i. e. (E. coli and S. Aureus) were studied. The obtained results showed that the synthesized CeO2 nanosheets had good antibacterial performance at different concentrations, which should be attributed to the reversible Ce3+/Ce4+ valence states and greater oxygen vacancies. XPS study of CeO2 nanosheets after antibacterial test confirmed the existence of Ce3+ ions and oxygen vacancies. CeO2 nanosheets have showed the greater potential as antibacterial nanomaterials against both the bactericides.

Funder

National Natural Science Foundation of China

Publisher

Wiley

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