Abstract
In the present work, hemoglobin (Hb) was entrapped into the nanosheets of a pre-exfoliated layered material HNb3O8. UV–vis spectra analysis displayed that no significant denaturation occurred to the entrapped protein. Electrochemical results showed that the entrapment of Hb into layered HNb3O8 enhanced the direct electron transfer ability between protein molecules and electrode. A pair of well-defined redox peaks was observed at −0.39 and −0.34 V on the glassy carbon electrode modified with the Hb/HNb3O8 composite. The electrode reactions showed a surface-controlled process with a single electron transfer at the scan rate of 50–400 mV/s, and the electron transfer rate was very fast. The entrapped Hb retained its biological activity well and the sensor constructed by the Hb/HNb3O8-composite-modified electrode displayed excellent response to the reduction of hydrogen peroxide (H2O2) with wide linear range, low detection limit, and good stability.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
