• Directions

Mariotti Research Group

Plasma Science & Nanoscale Engineering

  • Home
  • People
    • Current Group Members
    • Past Group Members
    • Prizes & Awards
  • Research
    • Current Funded Research Projects
    • Past projects
    • Past & Present Sponsors
  • Research Output
    • Journal Papers
    • We will be at … (future conferences)
    • We were at … (past conferences)
  • Facilities
    • Shared Materials Characterization Facilities
    • UU Photoelectron Spectroscopy Facility – UUPS
    • ELM Facility Cluster
    • OVO nanoFactory
    • Photovoltaic & Application Device Characterization
  • Image Galleries
    • Collection 2023
    • Collection 2022
    • Collection 2021
    • Collection 2020
    • Collection 2019
    • Collection 2018
    • Collection 2017
    • Collection 2016
    • Collection 2015
    • Collection 2014
    • Imagine RIT
  • Jobs & PhDs
    • Postdoc in Plasma Processes for Nanomaterials (deadline 28th January 2022)
    • PhD in Nanomaterials for Environmental Applications (competition closed)
    • PhD in Metal quantum dots and clusters for energy applications (competition closed)
  • News

Solar-thermal conversion with nano-Oxides (Nano Energy 108 2023 108112)

23rd January 2023 by Davide Mariotti

We demonstrate the synthesis, full characterization and application of Cu-oxide nanoparticles with high optical absorption and long-term stability over many months. The synthesis method, based on a hybrid plasma-liquid non-equilibrium electrochemical process, ensures a very limited environmental impact as it relies on a solid metal precursor while avoiding the use of additional chemicals such as surfactants and other reducing agents. The results show that nanofluids produced with our Cu-oxide nanoparticles can achieve exceptional solar thermal conversion efficiencies close to ~90% and can provide a viable solution for an efficient solar thermal conversion technology. (Nano Energy 108, 2023, 108112).

Filed Under: News

CNT for solar-thermal energy (Nanomaterials 12, 2022, 2705)

20th January 2023 by Davide Mariotti

Macroscopic ribbon-like assemblies of carbon nanotubes (CNTs) are functionalised using a simple direct-current-based plasma–liquid system, with oxygen and nitrogen functional groups being added. The ability to improve the wettability of the CNTs is of paramount importance for producing nanofluids, with relevance for a number of applications. Here, in particular, we investigate the efficacy of these samples as nanofluid additives for solar–thermal harvesting. (Nanomaterials 12, 2022, 2705).

Filed Under: News

Plasma direct exsolution (Adv Energy Mater 12, 2022, 2201131)

5th December 2022 by Davide Mariotti

Plasma direct exsolution at room temperature will enable improved sustainable synthetic routes, more control of catalysis microstructure as well as new application opportunities. Moreover, the factors that most affect the exsolution process are identified. It is shown that the surface defects produced initiate exsolution under a brief ion bombardment of an argon low-pressure and low temperature plasma. This results in controlled nanoparticles with diameters ≈19–22 nm with very high number densities thus creating a highly active catalytic material for CO oxidation which rivals traditionally created exsolved samples. (Advanced Energy Materials 12, 2022, 2201131).

Filed Under: News

D01 – Plasma Electrochemistry and Catalysis 2

6th November 2022 by Davide Mariotti

Submit by the 2nd of December 2022 at

https://www.electrochem.org/ecsnews/243-tcu-plasma-electrochemistry-catalysis/

Filed Under: News

Doping … more and better (J Mater Sci 57, 2022, 13314)

5th September 2022 by Davide Mariotti

Nitrogen doping of carbon nanomaterials using a simple direct current-based plasma–liquid system enables rapid and high levels of functionalization with the atomic concentration of nitrogen reaching 22.5%, with amine groups, pyrrolic groups and graphitic nitrogen observed in the X-ray photoelectron spectra, the highest ever achieved. (Journal of Materials Science 57, 2022, 13314).

Filed Under: News

Surface states matters (Carbon 183, 2021, 1)

28th August 2021 by Davide Mariotti

Nitrogen-doped carbon quantum dots are synthesized by a one-step atmospheric pressure microplasma process. The origin of the observed photoluminescence emission and its relationship with nitrogen doping is studied using a range of optical and chemical measurements along with verification by theoretical calculations (Carbon 183, 2021, 1).

Filed Under: News

Carrier extraction from metallic perovskite (Nanoscale 13, 2021, 12271)

28th August 2021 by Davide Mariotti

We observe the extraction of carriers in a perovskite oxide with metallic behaviour and high conductivity, whilst also displaying broad absorption across the ultraviolet, visible, and near-infrared spectral regions, making it an attractive material for solar energy conversion. Furthermore, the optoelectronic properties of strontium niobate can easily be tuned by varying the Sr fraction or through doping (Nanoscale 21, 2021, 12271).

Filed Under: News

Understanding plasma-ethanol interactions (Green Chemistry 23, 2021, 3983)

4th July 2021 by Davide Mariotti

Plasma-electrochemistry has been successfully used to synthesize a range of metal–oxide nanoparticles and quantum dots (QDs). While nanoparticles and QDs can be an end to this process, they can also be viewed as ‘chemical probes’ that help understanding the underlying and progenitor chemical reactions. We have therefore studied plasma–ethanol interactions during the synthesis of CuO QDs (Green Chemistry 23, 2021, 3983).

Filed Under: News

Copper nanoparticles & CNT composite materials (Nanoscale Adv 3, 2021, 781)

22nd February 2021 by Davide Mariotti

Copper nanoparticles (Cu-NPs) represent a viable low-cost alternative to replace bulk copper or other more expensive NPs (e.g. gold or silver) in various applications. This study deals with the synthesis of well dispersed Cu-NPs by using an Ar + H2 microplasma using a solid copper precursor.The Cu-NPs were successfully deposited onto porous carbon nanotube ribbons; surface coverage and the penetration depth of the Cu-NPs inside the CNT ribbon structure were investigated as these can be beneficial for a number of applications (Nanoscale Advanced 3, 2021, 781).

Filed Under: News

Dissociation of tetramethylsilane in a plasma (Plasma Process Polym 17, 2020, 1900243)

4th January 2021 by Davide Mariotti

Residual gases analysis after dissociation of tetramethylsilane (TMS) during the synthesis of silicon carbide (SiC) nanocrystals (NCs) by an atmospheric pressure microplasma was used to provide details that can contribute to the understanding of the formation mechanisms of NCs (Plasma Processes and Polymers 17, 2020, 1900243).

Filed Under: News

Next Page »
Plasma Science and Technology > Materials Processing and Nanotechnology > Energy and Environment

News and Events

  • Solar-thermal conversion with nano-Oxides (Nano Energy 108 2023 108112)
  • CNT for solar-thermal energy (Nanomaterials 12, 2022, 2705)
  • Plasma direct exsolution (Adv Energy Mater 12, 2022, 2201131)
  • D01 – Plasma Electrochemistry and Catalysis 2
  • Doping … more and better (J Mater Sci 57, 2022, 13314)

Copyright © 2014. All Rights Reserved.
Web design by Llama Digital.

Copyright © 2023 · News Pro Theme on Genesis Framework · WordPress · Log in