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Synthesis of Nanoscale Multi-Dimensional Transition Metal Oxides: Recent Advancements and Prospective Applications

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D1: Advanced Energy Materials".

Deadline for manuscript submissions: closed (25 May 2021) | Viewed by 2135

Special Issue Editors


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Guest Editor
School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, OK 73019, USA
Interests: Dr. Merchan-Merchan’s research areas are nanotechnology, formation of carbon particulate (soot) in oxygenated flames, flame synthesis of organic/inorganic/hybrid nanostructures (for batteries and fuel cells), and plasma processes. His most current research involves: i) the application of oxy-fuel flames for the synthesis of transition metal oxides (TMOs) and mixed TMO nanostructures; ii) the study of soot formation (thermophoretic and optical diagnostics) in biodiesel flames formed with oxygen-enriched air; biodiesel made of various types of feedstocks and blends (biodiesel/petro-fuel); iii) the application of biodiesel and methane flames for generating hydrophobic C-layers on various surfaces for application in heat exchangers; and iv) the study of biofuel’s corrosive properties.

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Guest Editor
Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27601, USA
Interests: Dr. Saveliev's research interests involve areas of non-thermal plasmas and their application for pollution control, material processing and medicine, nanomaterial synthesis and processing in flames and plasmas, combustion in heterogeneous media, excess enthalpy flames and superadiabatic combustion, fuel processing and reformation, optical diagnostics of reacting flows. Presently, Dr. Saveliev is 1) working on pulsed discharges in liquids, on liquid/gas interfaces and in supercritical fluids, 2) developing optical sensor for characterization of natural gas mixtures and opportunity fuels, 3) studying flame synthesis of metal oxide nanomaterials in oxy-fuel flames, 4) studying fuel processing and reforming in excess enthalpy flames and plasmas, and 5) developing optical sensor for diagnostic of gasifier flames.

Special Issue Information

Dear Colleagues,

The guest editors are inviting submissions for a Special Issue of Energies on the subject area of the "Synthesis of Nanoscale Multi-Dimensional Transition Metal Oxides: Recent Advancements and Prospective Applications". Owing to their unique properties, transition metal oxides (TMOs) and related structures are highly sought-after nanomaterials (NMs). This new type of NMs exhibits a rich collection of properties and endless potential applications. More recently, it has been shown that crystalline TMOs with multi-dimensional nanoscale morphologies (i.e., 1D, 2D and 3D) have properties superior to microcrystalline structures and their bulk counterparts. Additionally, it has been shown that mixed TMO nanostructures exhibit enhanced properties. One of the main challenges has been the synthesis of these new types of NMs. 

To successfully support the utilization of TMOs in future technology/endeavors, robust, scalable, and energy-efficient synthesis methods are needed. Popular and traditional methods such as chemical vapor deposition (CVD), laser deposition, plasma and plasma-enhanced CVD, sol–gel, and flames/combustion, are being employed to synthesize TMOs and related materials. In recent years, many of these methods have been refined to improve the quality, controllability, reduce raw material usage, and improve TMO properties; therefore, widening the potential applications of these materials. Advanced processes have allowed for the transition from batch to continuous synthesis resulting in the rapid scalable manufacturing of nanostructured TMOs.  

This Special Issue aims to gather a collection of articles that demonstrate the ongoing efforts in the field of the synthesis of nanostructured transition metal oxide materials for various technological applications. It focuses on the presentation of the various growth methods, the underlying synthesis mechanisms, and of the potential applications of nanoscale TMOs and related materials.

Prof. Dr. Wilson Merchan-Merchan
Prof. Dr. Alexei Saveliev
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 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

  • Synthesis of transition metal oxide structures
  • Transition metal oxide properties and applications
  • Multi-dimensional transition metal–oxides
  • Metal–oxide nanostructured materials
  • CVD nanomaterial synthesis
  • Solid support synthesis
  • Plasma nanomaterial synthesis
  • Flame nanomaterial synthesis

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Published Papers (1 paper)

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Research

9 pages, 2685 KiB  
Article
Grown and Characterization of ZnO Aligned Nanorod Arrays for Sensor Applications
by Arkady N. Redkin, Eugene E. Yakimov, Maria V. Evstafieva and Eugene B. Yakimov
Energies 2021, 14(13), 3750; https://doi.org/10.3390/en14133750 - 22 Jun 2021
Cited by 6 | Viewed by 1760
Abstract
ZnO nanorods are promising materials for many applications, in particular for UV detectors. In the present paper, the properties of high crystal quality individual ZnO nanorods and nanorod arrays grown by the self-catalytic CVD method have been investigated to assess their possible applicationsfor [...] Read more.
ZnO nanorods are promising materials for many applications, in particular for UV detectors. In the present paper, the properties of high crystal quality individual ZnO nanorods and nanorod arrays grown by the self-catalytic CVD method have been investigated to assess their possible applicationsfor UV photodetectors. X-ray diffraction, Raman spectroscopy and cathodoluminescence investigations demonstrate the high quality of nanorods. The nanorod resistivity and carrier concentration in dark is estimated. The transient photocurrent response of both as grown and annealed at 550 °C nanorod array under UV illumination pulses is studied. It is shown that annealing increases the sensitivity and decreases the responsivity that is explained by oxygen out-diffusion and the formation of near surface layer enriched with oxygen vacancies. Oxygen vacancy formation due to annealing is confirmed by an increase of green emission band intensity. Full article
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