DIRECT ELECTROCHEMISTRY OF HEMOGLOBIN IMMOBILIZED IN THE SODIUM ALGINATE AND SIO2 NANOPARTICLES BIONANOCOMPOSITE FILM ON A CARBON IONIC LIQUID ELECTRODE

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SUN W.; WANG D.; ZHAI Z.; GAO R.; JIAO K.

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Journal: JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS) Year:2009 | Volume:6 | Issue:2 Page(s): 412-419

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Title

DIRECT ELECTROCHEMISTRY OF HEMOGLOBIN IMMOBILIZED IN THE SODIUM ALGINATE AND SIO2 NANOPARTICLES BIONANOCOMPOSITE FILM ON A CARBON IONIC LIQUID ELECTRODE

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Keywords

1-BUTYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE

HEMOGLOBIN

DIRECT ELECTRON TRANSFER

CARBON PASTE ELECTRODE

SIO2 NANOPARTICLE

Abstract

In this paper a carbon ionic liquid electrode (CILE) was fabricated by using a room temperature ionic liquid of 1-BUTYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE (BMIMPF6) as binder. By using the CILE as basal electrode, the HEMOGLOBIN (Hb) molecule was immobilized on the surface of CILE with a sodium alginate (SA) hydrogel and SiO2 nanoparticles organic-inorganic composite material. The direct electrochemical behaviors of Hb in the bionanocomposite film were further studied in a pH 7.0 Britton-Robinson (B-R) buffer solution. A pair of well-defined quasi-reversible cyclic voltammetric peaks of Hb was obtained on SA/nano-SiO2/Hb/CILE with the formal potential (E0') at -0.355 V (vs. SCE), which was the characteristic of heme Fe(III)/Fe(II) redox couples. The formal potential of Hb Fe(III)/Fe(II) couple shifted negatively with increasing pH of solution with a slope of -45.2 mV/pH, which indicated that a one electron transfer accompanied with one proton transportation. The immobilized Hb showed good electrocatalytic manner to the reduction of trichloroacetic acid (TCA).

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APA: Copy

SUN, W., WANG, D., ZHAI, Z., GAO, R., & JIAO, K.. (2009). DIRECT ELECTROCHEMISTRY OF HEMOGLOBIN IMMOBILIZED IN THE SODIUM ALGINATE AND SIO₂ NANOPARTICLES BIONANOCOMPOSITE FILM ON A CARBON IONIC LIQUID ELECTRODE. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS), 6(2), 412-419. SID. https://sid.ir/paper/282319/en

Vancouver: Copy

SUN W., WANG D., ZHAI Z., GAO R., JIAO K.. DIRECT ELECTROCHEMISTRY OF HEMOGLOBIN IMMOBILIZED IN THE SODIUM ALGINATE AND SIO₂ NANOPARTICLES BIONANOCOMPOSITE FILM ON A CARBON IONIC LIQUID ELECTRODE. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)[Internet]. 2009;6(2):412-419. Available from: https://sid.ir/paper/282319/en

IEEE: Copy

W. SUN, D. WANG, Z. ZHAI, R. GAO, and K. JIAO, “DIRECT ELECTROCHEMISTRY OF HEMOGLOBIN IMMOBILIZED IN THE SODIUM ALGINATE AND SIO₂ NANOPARTICLES BIONANOCOMPOSITE FILM ON A CARBON IONIC LIQUID ELECTRODE,” JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS), vol. 6, no. 2, pp. 412–419, 2009, [Online]. Available: https://sid.ir/paper/282319/en

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