e-journal

Zinc oxide nanoparticles/glucose oxidase photoelectrochemical system for the fabrication of biosensor

---

Abstract.
Nanosized semiconductor crystals can increase efficiency of photochemical reactions and greatly
improve the catalytic activity of enzymes to generate novel photoelectrochemical systems. In this work,
glucose oxidase (GOx)/zinc oxide (ZnO) is selected as a model system to assess the photovoltaic effect of
semiconductor nanoparticles on the enzyme electrode. UV-spectrum and circular dichroism (CD) results
show that the structure of GOx is preserved after conjugation with ZnO nanoparticles. The current
response of the enzyme electrode containing ZnO nanoparticles increases from 0.82 to 21 uA cm-2 in
the solution of 10 mM B-D-glucose. Furthermore, after irradiating the enzyme electrode with UV light
for 2 h, the current response can be increased nearly 30% and the detection limit can be lowered about
two orders compared with the catalytic reactions in the dark, which indicate that a technique to fabricate
a novel photocontrolled enzyme-based biosensor may be developed.

Keywords:
Zinc oxide nanoparticles
Photoelectrochemical system
Glucose oxidase
Biosensor

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Journal of Colloid and Interface Science

No. Panggil

-

Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Colloid and Interface Science 334 (2009) 183–187

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

KIMIA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar