Cited by 116Laser-Ablation Synthesis of NanoparticlesAdvanced Photocatalysis TechniquesZnO doping and properties

Laser-Ablated ZnO Nanoparticles and Their Photocatalytic Activity toward Organic Pollutants

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Mintcheva, Neli, Aljulaih, Ali A., Wunderlich, Wilfried, Kulinich, Sergei A., Iwamori, Satoru·2018·Materials

Abstract

This work aimed to prepare nanostructures of ZnO with various lasers, testing them as photocatalysts, and comparing their morphology and activity in the degradation of organic pollutants in aqueous media. ZnO nanospheres (ns-ZnO) and ZnO nanorods (ms-ZnO) were prepared via the laser ablation of a Zn metal plate in water using nanosecond- and millisecond-pulsed lasers, respectively. The obtained materials were characterized using a set of optical, structural, and surface-science techniques, such as UV-vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Under visible-light irradiation, both nanostructures were found to be catalytically active toward the oxidation of methylene blue, which was used as a model compound. The ZnO nanorods fabricated with the millisecond laser showed better photocatalytic performance than their spherically shaped counterparts obtained by means of the nanosecond laser, which could be assigned to a larger number of defects on the ms-ZnO surface.

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  • ZnO nanorods formed with millisecond laser exhibited higher photocatalytic activity than spherical nanostructures obtained by nanosecond laser due to a larger number of defects on ZnO nanorods.

    “The nanorods formed with millisecond laser exhibited higher photocatalytic activity than the spherical nanostructures obtained by nanosecond laser due to a larger number of defects on ZnO nanorods.”

    From Fundamentals and comprehensive insights on pulsed laser synthesis of advanced materials for diverse photo- and electrocatalytic applications (2022) · cites this paper as [183]

    The Conclusions report that millisecond-laser ZnO nanorods had somewhat higher photocatalytic activity than nanosecond-laser spherical ZnO and had more oxygen defects. However, the paper says those defects were *believed* to explain the difference; the claim presents that proposed cause as established. (LLM, conf=0.88)

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Authors
Mintcheva, N., Aljulaih, A. A., Wunderlich, W., Kulinich, S. A., & Iwamori, S.
Affiliations
Tokai University (JP)
Corresponding author
  • Mintcheva, Neli
  • Kulinich, Sergei A.
Venue
Materials
Publisher
MDPI AG
Published
2018-07-03
Volume
11
Issue
7
Pages
1127
ISSN
1996-1944 (ISSN-L)
OpenAlex
W2810077735
Cited by
115
References
37
Citations by year
2026: 12 · 2025: 19 · 2024: 15 · 2023: 15 · 2022: 14 · 2021: 13 · 2020: 16 · 2019: 8 · 2018: 3
FWCI
4.00
Type
journal article
Language
en
Open access
Locations
  • Materials (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Hanoi University of Mining and Geology
  • Japan Society for the Promotion of Science (16K04904)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Laser-Ablation Synthesis of Nanoparticles
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
  • Physical Sciences › Materials Science › Materials Chemistry › ZnO doping and properties
Keywords
zinc oxide nanoparticles, laser ablation, ZnO nanorods, ZnO nanospheres, photocatalysis, visible light photocatalysis, methylene blue degradation, organic pollutant degradation, nanosecond laser, surface defects, morphology (materials science)

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