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

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.

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
DOI 10.3390/ma11071127PMC PMC6073525
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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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Crossref · 10.3390/ma11071127

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Figures

Figure 1 UV-vis absorption spectra of as-prepared ZnO nanosphere (ns-ZnO) and ZnO nanorod (ms-ZnO) colloids in water.
Figure 1 UV-vis absorption spectra of as-prepared ZnO nanosphere (ns-ZnO) and ZnO nanorod (ms-ZnO) colloids in water.CC BY · PubMed Central
Figure 2 X-ray diffraction (XRD) patterns of ns-ZnO and ms-ZnO samples prepared using nanosecond- and millisecond-pulsed lasers, respectively. Multiple signals due to the Si substrate are marked by asterisks. All signals in both patterns were indexed as hexagonal ZnO.
Figure 2 X-ray diffraction (XRD) patterns of ns-ZnO and ms-ZnO samples prepared using nanosecond- and millisecond-pulsed lasers, respectively. Multiple signals due to the Si substrate are marked by asterisks. All signals in both patterns were indexed as hexagonal ZnO.CC BY · PubMed Central
Figure 3 Transmission electron microscopy (TEM) images of (a) ms-ZnO nanoparticles (NPs; nanorod-shaped) prepared using the millisecond-pulsed laser, and (b) ns-ZnO NPs (sphere-shaped) prepared using the nanosecond-pulsed laser; (c) size distribution (length and width) of the ZnO nanorods; (d) size distribution of the ZnO nanospheres.
Figure 3 Transmission electron microscopy (TEM) images of (a) ms-ZnO nanoparticles (NPs; nanorod-shaped) prepared using the millisecond-pulsed laser, and (b) ns-ZnO NPs (sphere-shaped) prepared using the nanosecond-pulsed laser; (c) size distribution (length and width) of the ZnO nanorods; (d) size distribution of the ZnO nanospheres.CC BY · PubMed Central
Figure 4 X-ray photoelectron spectroscopy (XPS) Zn 2p3/2 spectra of ms-ZnO and ns-ZnO samples curve-fitted with two components corresponding to ZnO (Zn1) and Zn–OH species (Zn2).
Figure 4 X-ray photoelectron spectroscopy (XPS) Zn 2p3/2 spectra of ms-ZnO and ns-ZnO samples curve-fitted with two components corresponding to ZnO (Zn1) and Zn–OH species (Zn2).CC BY · PubMed Central
Figure 5 XPS O 1s spectra of ms-ZnO and ns-ZnO samples curve-fitted with three components corresponding to an O2− ion in the wurtzite phase surrounded by Zn atoms in their full tetrahedral geometry of nearest oxygen atoms (O1), surface OH groups bonded to Zn2+ (O2), and chemisorbed oxygen, such as O2 and adsorbed H2O (O3).
Figure 5 XPS O 1s spectra of ms-ZnO and ns-ZnO samples curve-fitted with three components corresponding to an O2− ion in the wurtzite phase surrounded by Zn atoms in their full tetrahedral geometry of nearest oxygen atoms (O1), surface OH groups bonded to Zn2+ (O2), and chemisorbed oxygen, such as O2 and adsorbed H2O (O3).CC BY · PubMed Central
Figure 6 Photodegradation curves of methylene blue (MB) (a) in the presence of as-prepared ms-ZnO (1) and ns-ZnO (2); (b) in the presence of annealed ms-ZnO (3) and ns-ZnO (4). Curve (5) represents the blank sample.
Figure 6 Photodegradation curves of methylene blue (MB) (a) in the presence of as-prepared ms-ZnO (1) and ns-ZnO (2); (b) in the presence of annealed ms-ZnO (3) and ns-ZnO (4). Curve (5) represents the blank sample.CC BY · PubMed Central

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Metadata

Authors
Mintcheva, N., Aljulaih, A. A., Wunderlich, W., Kulinich, S. A., & Iwamori, S.
Affiliations
Tokai University (JP)
Corresponding author
  • Mintcheva, Neli
  • Kulinich, Sergei A.
ORCID
Venue
Materials
Publisher
MDPI AG
Published
2018-07-03
Volume
11
Issue
7
Pages
1127
ISSN
1996-1944 (ISSN-L)
DOI
10.3390/ma11071127
PMC
PMC6073525
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
Licence
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 › Materials Science › Materials Chemistry › 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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