Flexible and freestanding catalase-Fe3O4/reduced graphene oxide paper: Enzymatic hydrogen peroxide sensor applications

Dağcı Kıranşan, Kader; Aksoy, Mine; Topçu, Ezgi

doi:10.1016/j.materresbull.2018.05.032

Makale Tam Makale Uluslararası 2018

Flexible and freestanding catalase-Fe3O4/reduced graphene oxide paper: Enzymatic hydrogen peroxide sensor applications

Kader Dağcı Kıranşan, Mine Aksoy, Ezgi Topçu

Materials Research Bulletin Cilt 106 · ss. 57–65 · 01.10.2018

DOI ile aç

Özet

We proposed a new type of freestanding Catalase (EC 1.11.1.6) (Cat) modified paper electrode based on Fe3O4 crystals decorated freestanding reduced graphene oxide (rGO) paper (Cat-Fe3O4/rGO) using a facile electro-deposition method. This enzyme modified paper electrode was used for the specific determination of hydrogen peroxide (H2O2). Structural, chemical, and morphological characterization of the Fe3O4 crystals formed on rGO paper was investigated by (i) using scanning electron microscopy (SEM), (ii) energy-dispersive X-ray spectroscopy (EDS), (iii) X-ray photoelectron spectroscopy (XPS), (iv) X-ray diffraction spectroscopy (XRD), (v) Raman spectroscopy, (vi) electrochemical impedance spectroscopy (EIS) and (vii) cyclic voltammetry (CV) techniques. The Cat enzyme was successfully adsorbed on the Fe3O4 nanocrystals surface which was demonstrated by fluorescence microscopy. The Cat-Fe3O4/rGO paper electrode showed excellent electrocatalytic activity toward H2O2. It is found that Cat-Fe3O4/rGO paper electrode shows a wide linear range, high sensitivity, and a low detection limit for H2O2 detection.

Anahtar kelimeler

ELECTROCHEMICAL DETECTION Fe3O4 AMPEROMETRIC DETECTION CATALASE silver nanoparticles ELECTRODE Immobilization Flexible paper H2O2 sensor NITROGEN-DOPED GRAPHENE CARBON NANOFIBERS COMPOSITE FILMS H2O2

Atıf için künye

Dağcı Kıranşan, K., Aksoy, M., & Topçu, E. (2018). Flexible and freestanding catalase-Fe3O4/reduced graphene oxide paper: Enzymatic hydrogen peroxide sensor applications. Materials Research Bulletin, 106, 57–65. https://doi.org/10.1016/j.materresbull.2018.05.032

BibTeX

@article{dagcikiransan2018-55246,
  author = {Dağcı Kıranşan, Kader and Aksoy, Mine and Topçu, Ezgi},
  title = {Flexible and freestanding catalase-Fe3O4/reduced graphene oxide paper: Enzymatic hydrogen peroxide sensor applications},
  journal = {Materials Research Bulletin},
  year = {2018},
  volume = {106},
  pages = {57--65},
  issn = {0025-5408},
  doi = {10.1016/j.materresbull.2018.05.032},
  url = {https://akademik.atauni.edu.tr/yayinlar/55246-flexible-and-freestanding-catalase-fe3o4reduced-graphene-oxide-paper-enzymatic}
}