A novel preparation method for ZnO/γ-Al_2O_3 nanofibers with enhanced absorbability and improved photocatalytic water-treatment performance by Ag nanoparticles
- Creators
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Cheng, Zhiqiang
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Zhao, Shengzhe
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Han, Lihao
Abstract
A novel method for synthesizing ZnO/γ-Al_2O_3 nanofibers by electrospinning and subsequent calcination is reported. The prepared nanofibers were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The ZnO/γ-Al_2O_3 nanofibers exhibited excellent capacity for adsorbing organics with a negative zeta potential such as methyl orange (95.8%) and heavy metal ions such as Cr(VI) in aqueous solution. The mechanism of adsorption was investigated, and the adsorption results were fitted using the Langmuir and Freundlich models. Once silver nanoparticles (Ag NPs) were decorated on the surface of the nanofibers by photoreduction, the Ag/ZnO/γ-Al_2O_3 nanofibers manifested efficient photocatalytic degradation of methyl orange under UV-light illumination. Results confirmed that our Ag/ZnO/γ-Al_2O_3 nanofibers are a promising adsorbent for the removal of methyl orange and Cr(VI) ions and the adsorbent can be sustainably reused.
Additional Information
© 2018 The Royal Society of Chemistry. The article was received on 28 Dec 2017, accepted on 24 Feb 2018 and first published on 27 Feb 2018. This work was funded by the Jilin Province provincial industrial innovation special funds project (2018C041-2), the Jilin Provincial Department of Science and Technology Natural Science Foundation (20180101212JC) and the Changchun Science and Technology Project (17DY012). The authors would like to thank Dr Ian Sullivan (California Institute of Technology, USA) for polishing the manuscript. The authors declared that they have no conflicts of interest to this work.Attached Files
Supplemental Material - c7nr09683f1_si.pdf
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Additional details
- Alternative title
- A novel preparation method for ZnO/γ-Al2O3 nanofibers with enhanced absorbability and improved photocatalytic water-treatment performance by Ag nanoparticles
- Eprint ID
- 85386
- Resolver ID
- CaltechAUTHORS:20180321-074041990
- 2018C041-2
- Jilin Province Provincial Industrial Innovation Special Funds Project
- 20180101212JC
- Jilin Provincial Department of Science and Technology Natural Science Foundation
- 17DY012
- Changchun Science and Technology Project
- Created
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2018-03-26Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Caltech groups
- JCAP