Nanostructured Zinc Oxide Particles in Chemically Modified Electrodes for Biosensor Applications

Abstract

Zinc oxide (ZnO) has received considerable attention because of its unique optical, semiconducting, piezoelectric, and magnetic properties. ZnO nanostructures exhibit interesting properties including high catalytic efficiency and strong adsorption ability. Recently, the interest has been focused toward the application of ZnO in biosensing because of its high isoelectric point (9.5), biocompatibility, and fast electron transfer kinetics. Such features advocate the use of this exciting material as a biomimic membrane to immobilize and modify biomolecules. This review highlights the potential use of ZnO in modified electrodes and biosensing.

Keywords:

• Zinc oxide particles
• biosensors
• proteins
• direct electrochemistry
• modified electrodes
• electrocatalysis

This project work supported by the National Science Council and the Ministry of Education of the Taiwan (ROC).