Articles producció científica> Química Física i Inorgànica

Determination of photothermal conversion efficiency of graphene and graphene oxide through an integrating sphere method

  • Identification data

    Identifier: PC:1275
    Handle: https://hdl.handle.net/20.500.11797/PC1275
    Authors:
    J.J. CarvajalOl.A. SavchukJ. MassonsM. AguilóF. Díaz
    Abstract:
    We report a new method for the determination of photothermal conversion efficiency of photothermal agents, based on the use of an integrating sphere. We validated this method by comparing the photothermal conversion efficiency of Au nanorods calculated by this method and by the more conventional time constant method. Then, we applied this method to determine the photothermal conversion efficiency of graphene and graphene oxide nanosheets dispersions in dimethylformamide and water, respectively, finding out that they are excellent photothermal agents with photothermal conversion efficiencies among the highest reported up to now. We also analyzed the influence of the concentration of the materials, and the wavelength and power of irradiation in the temperature increase that can be achieved with them, finding out that they can be used, for instance, in cancer treatment through hyperthermia procedures with reduced costs when compared to other photothermal agents.

  • Others:

    Author, as appears in the article.: J.J. Carvajal; Ol.A. Savchuk; J. Massons; M. Aguiló; F. Díaz
    Department: Química Física i Inorgànica
    URV's Author/s: CARVAJAL MARTÍ, JOAN JOSEP; Ol.A. Savchuk; J. Massons; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL
    Keywords: oxide graphene photothermal
    Abstract: We report a new method for the determination of photothermal conversion efficiency of photothermal agents, based on the use of an integrating sphere. We validated this method by comparing the photothermal conversion efficiency of Au nanorods calculated by this method and by the more conventional time constant method. Then, we applied this method to determine the photothermal conversion efficiency of graphene and graphene oxide nanosheets dispersions in dimethylformamide and water, respectively, finding out that they are excellent photothermal agents with photothermal conversion efficiencies among the highest reported up to now. We also analyzed the influence of the concentration of the materials, and the wavelength and power of irradiation in the temperature increase that can be achieved with them, finding out that they can be used, for instance, in cancer treatment through hyperthermia procedures with reduced costs when compared to other photothermal agents.
    Research group: Física i Cristal·lografia de Nanomaterials Física i Cristal.lografia de Materials
    Thematic Areas: Chemistry Química Química
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0008-6223
    Author identifier: 0000-0002-4389-7298; n/a; n/a; 0000-0001-6130-9579; 0000-0003-4581-4967
    Record's date: 2016-03-16
    Last page: 141
    Journal volume: 103
    Papper version: info:eu-repo/semantics/submittedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0008622316301683?via%3Dihub
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1016/j.carbon.2016.02.075
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    First page: 134
    Publication Type: Article Artículo Article

  • Keywords:

    Grafè
    oxide
    graphene
    photothermal
    Chemistry
    Química
    Química
    0008-6223

  • Documents:

    DocumentPrincipal

  • Cerca a google

    Search to google scholar