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Advances in Transition Metal Oxides for Energy- and Electronic-Related Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: 20 July 2024 | Viewed by 939

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Special Issue Information

Dear Colleagues,

Transition metal oxides have a wide range of applications in energy- and electronic-related fields due to their intrinsic electronic, magnetic, and catalytic properties. They have applications in batteries, solar cells, fuel cells, gas sensors, electrochromic devices, and hydrogen electrode production or harvesting. Nanomaterials can improve the properties of the bulk counterparts. Overall, transition metal oxides have shown great potential in energy- and electronic-related applications due to their unique properties and versatility in various fields. Thus, we would like to receive works that can contribute to the evolution of new devices in energy and electronic applications.

Dr. Bartolomeu Cruz Viana
Guest Editor

Manuscript Submission Information

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Keywords

  • oxides
  • transition metals
  • nanomaterials
  • nanoparticles
  • energy

Published Papers (1 paper)

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Research

18 pages, 4320 KiB  
Article
Photocatalytic Activity of N-Doped ZrO2 Thin Films Determined by Direct and Indirect Irradiation
by Carmen Mita, Nicoleta Cornei, Mariana Frenti, Georgiana Bulai, Marius Dobromir, Vasile Tiron, Aleksandr S. Doroshkevich and Diana Mardare
Materials 2023, 16(17), 5901; https://doi.org/10.3390/ma16175901 - 29 Aug 2023
Viewed by 623
Abstract
In this paper, we investigate the decomposition of a toxic organic compound, Rhodamine B, by the photocatalytic activities of undoped and nitrogen-doped ZrO2 thin films, deposited using the HiPIMS technique. The investigation was performed in the presence and in the absence of [...] Read more.
In this paper, we investigate the decomposition of a toxic organic compound, Rhodamine B, by the photocatalytic activities of undoped and nitrogen-doped ZrO2 thin films, deposited using the HiPIMS technique. The investigation was performed in the presence and in the absence of H2O2, for two types of experimental arrangements: the irradiation of the films, followed by dipping them in the Rhodamine B solutions, and the irradiation of the films dipped in the solution. The two situations were named “direct irradiation” and “indirect irradiation”, respectively. Methods like XRD, AFM, XPS, DRS, water/film surface contact angle, and spectrophotometry were used to obtain information on the films’ structure, surface morphology, elemental composition of the films surface, optical band gap, hydrophilicity, and photocatalytic activity, respectively. All these properties were described and correlated. By N-doping ZrO2, the films become absorbent in the visible domain, so that the solar light could be efficiently used; the films’ hydrophilic properties improve, which is an important fact in self-cleaning applications; and the films’ photocatalytic activity for the decomposition of Rhodamine B becomes better. The addition of hydrogen peroxide acted as an inhibitor for all systems and not as an accelerator of the photocatalytic reactions as expected. Full article
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