Articles producció científica> Química Física i Inorgànica

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

  • Dades identificatives

    Identificador: PC:1275
    Handle: https://hdl.handle.net/20.500.11797/PC1275
    Autors:
    J.J. CarvajalOl.A. SavchukJ. MassonsM. AguilóF. Díaz
    Resum:
    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.

  • Altres:

    Autor segons l'article: J.J. Carvajal; Ol.A. Savchuk; J. Massons; M. Aguiló; F. Díaz
    Departament: Química Física i Inorgànica
    Autor/s de la URV: CARVAJAL MARTÍ, JOAN JOSEP; Ol.A. Savchuk; J. Massons; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL
    Paraules clau: oxide graphene photothermal
    Resum: 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.
    Grup de recerca: Física i Cristal·lografia de Nanomaterials Física i Cristal.lografia de Materials
    Àrees temàtiques: Chemistry Química Química
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0008-6223
    Identificador de l'autor: 0000-0002-4389-7298; n/a; n/a; 0000-0001-6130-9579; 0000-0003-4581-4967
    Data d'alta del registre: 2016-03-16
    Pàgina final: 141
    Volum de revista: 103
    Versió de l'article dipositat: info:eu-repo/semantics/submittedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0008622316301683?via%3Dihub
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.1016/j.carbon.2016.02.075
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2016
    Pàgina inicial: 134
    Tipus de publicació: Article Artículo Article

  • Paraules clau:

    Grafè
    oxide
    graphene
    photothermal
    Chemistry
    Química
    Química
    0008-6223

  • Documents:

    DocumentPrincipal

  • Cerca a google

    Search to google scholar