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Applied Sciences
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Metal Oxide Nanostructures
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Metal Oxide Nanostructures

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Nanotechnology and Applied Nanosciences".

Deadline for manuscript submissions: closed (31 January 2017) | Viewed by 11828

Special Issue Editors

Dr. Volodymyr Khranovskyy

E-Mail Website
Guest Editor
Semiconductor Materials, IFM, Linköping University, SE-58183, Linköping, Sweden
Interests: wide band gap semiconductors, metal oxide nanostructures; two-dimensional oxide materials; nanocomposites; green electronics
Prof. Dr. Luis Pereira

E-Mail Website
Guest Editor
AlmaScience CoLab, Campus da Caparica, 2829‐516 Caparica, Portugal
Interests: cellulosic materials for electronics and photonics; oxide nanostructures; fiber-based functional materials and devices; electrical and electrochemical devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metal oxides (MOs) are an important class of materials for semiconductor technology and play an essential role in the today’s micro- and nanoelectronics. MOs demonstrate amazing diversity of physical and chemical properties, hosting a number of novel and distinctive physical phenomena. Furthermore, MOs have been proven to be crystallized in the variety of shapes, providing the widest family of nanostructures and extending the material application potential further. During the last few decades, plenty of low-dimensional objects of different shapes were reported for materials such as ZnO, TiO2, NiO, VOx, WOx, SnO, etc. It was suggested that the metal oxide nanostructures may be applied in the fields of nano-, piezo-, opto-electronics, gas sensing technologies, plasmonics, field emission, catalyst, electro-, thermos-chromic and water splitting, and many others. Moreover, successful combination of metal oxide nanostructures with the other functional materials (graphene, carbon nanotubes, metal nanoparticles, etc.) enabled the fabrication of unique nanocomposites with added functionality, and widened the range of application possibilities further to the fields of energy storage, solar cells, water cleaning and splitting, phosphors, biosensors, etc. However, despite a few examples, the application of the metal oxide nanostructures is still a challenge that has to be addressed in forthcoming years. This Special Issue is aimed at demonstrating the latest progress of metal oxide nanostructures fabrication and characterization, followed by demonstration of their actual applications.

Dr. Volodymyr Khranovskyy
Prof. Luís Miguel Nunes Pereira
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Nanostructures
  • ZnO
  • TiO2
  • NiO
  • VOx
  • WOx
  • SnO
  • low dimensional structures

Published Papers (2 papers)

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Research

1694 KiB  
Article
Solar Explosive Evaporation Growth of ZnO Nanostructures
by Arsenii Ievtushenko, Vasily Tkach, Victor Strelchuk, Larisa Petrosian, Oleksander Kolomys, Oleksander Kutsay, Viktor Garashchenko, Olena Olifan, Sergiy Korichev, Georgii Lashkarev and Volodymyr Khranovskyy
Appl. Sci. 2017, 7(4), 383; https://doi.org/10.3390/app7040383 - 12 Apr 2017
Cited by 9 | Viewed by 3514
Abstract
For the first time, we present a novel method of explosive evaporation (MEE) for the deposition of ZnO nanostructures using concentrated solar radiation for precursor evaporation. Zinc acetylacetonate powder and a mixture of ZnO with graphite powders are used as precursors for the [...] Read more.
For the first time, we present a novel method of explosive evaporation (MEE) for the deposition of ZnO nanostructures using concentrated solar radiation for precursor evaporation. Zinc acetylacetonate powder and a mixture of ZnO with graphite powders are used as precursors for the deposition of ZnO nanostructures. ZnO nanostructures are deposited on Au/Si, Ag/Si, and unpolished Si substrates by MEE. The scanning electron microscopy, energy dispersive X-ray analysis, X-ray diffraction, Raman scattering, photoluminescence, and Fourier transformed infrared spectroscopy are used for sample characterization. We demonstrate that the changing of precursors and the substrate types allows ZnO nanostructures to be grown with diverse morphologies: hexagons, spheres, and needles. The properties of ZnO nanostructures deposited on unpolished, coated by Ag and Au silicon substrates are discussed. MME using concentrated solar radiation is promising method for applications in the semiconductor industry as an economically efficient environmentally-friendly method for the growth of nanostructures. Full article
(This article belongs to the Special Issue Metal Oxide Nanostructures)
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4449 KiB  
Article
Characterization of Reduced Graphene Oxide (rGO)-Loaded SnO2 Nanocomposite and Applications in C2H2 Gas Detection
by Lingfeng Jin, Weigen Chen, He Zhang, Gongwei Xiao, Chutian Yu and Qu Zhou
Appl. Sci. 2017, 7(1), 19; https://doi.org/10.3390/app7010019 - 23 Dec 2016
Cited by 43 | Viewed by 7700
Abstract
Acetylene (C2H2) gas sensors were developed by synthesizing a reduced graphene oxide (rGO)-loaded SnO2 hybrid nanocomposite via a facile two-step hydrothermal method. Morphological characterizations showed the formation of well-dispersed SnO2 nanoparticles loaded on the rGO sheets with [...] Read more.
Acetylene (C2H2) gas sensors were developed by synthesizing a reduced graphene oxide (rGO)-loaded SnO2 hybrid nanocomposite via a facile two-step hydrothermal method. Morphological characterizations showed the formation of well-dispersed SnO2 nanoparticles loaded on the rGO sheets with excellent transparency and obvious fold boundary. Structural analysis revealed good agreement with the standard crystalline phases of SnO2 and rGO. Gas sensing characteristics of the synthesized materials were carried out in a temperature range of 100–300 °C with various concentrations of C2H2 gas. At 180 °C, the SnO2–rGO hybrid showed preferable detection of C2H2 with high sensor response (12.4 toward 50 ppm), fast response-recovery time (54 s and 23 s), limit of detection (LOD) of 1.3 ppm and good linearity, with good selectivity and long-term stability. Furthermore, the possible gas sensing mechanism of the SnO2–rGO nanocomposites for C2H2 gas were summarized and discussed in detail. Our work indicates that the addition of rGO would be effective in enhancing the sensing properties of metal oxide-based gas sensors for C2H2 and may make a contribution to the development of an excellent ppm-level gas sensor for on-line monitoring of dissolved C2H2 gas in transformer oil. Full article
(This article belongs to the Special Issue Metal Oxide Nanostructures)
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