ZnO nanofibers prepared by plasma assisted calcination: Characterization and photocatalytic properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00125300" target="_blank" >RIV/00216224:14310/22:00125300 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.apsusc.2021.152384" target="_blank" >https://doi.org/10.1016/j.apsusc.2021.152384</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2021.152384" target="_blank" >10.1016/j.apsusc.2021.152384</a>

Result language

angličtina

Original language name

ZnO nanofibers prepared by plasma assisted calcination: Characterization and photocatalytic properties

Original language description

The ZnO nanofibers (ZnO-NF) have been fabricated by the novel approach of plasma assisted calcination using the low-temperature atmospheric pressure plasma generated by diffuse coplanar surface barrier discharge (DCSBD). The electrospun polyvinyl pyrrolidone/zinc acetate fibers were exposed to DCSBD plasma before the thermal processing at different temperatures (400 °C,500 °C and 600 °C) and characterized in term of chemical composition and morphological structure by ATR-FTIR, XPS, SEM, XRD, and BET analysis. The photocatalytic activity of prepared ZnO-NF has been investigated under UV-radiation using methylene blue and the kinetics of photodegradation and reusability were studied. The results showed that initial removal of organic matrix at low-temperature by application of plasma leads to better formation of Zn-O even at lower calcination temperature. The plasma pre-treated (PT) fibers exhibit lower diameter of final products and helps to preserve a well-defined fibrous structure during thermal processing. The ZnO-NF prepared by a combination of plasma treatment and thermal processing showed significantly higher photodegradation activity and the difference was higher with decreasing calcination temperature. The highest rate constants were reached for fibers calcined at 600 °C with and without plasma treatment – kPT = 0.0149 min−1, kNT = 0.0107 min−1, respectively. The slight improvement of re-usability in cyclic photodegradation was observed on samples calcined at 600 °C.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Surface Science

ISSN

0169-4332

e-ISSN

—

Volume of the periodical

581

Issue of the periodical within the volume

April

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

152384

UT code for WoS article

000762778800003

EID of the result in the Scopus database

2-s2.0-85122352182