Growth of Zinc Oxide Nanorods Via Aqueous Solution Process and Their Application for Biosensors

Abstract

ZnO nanorods were grown on various substrates using aqueous solution, aiming at integrating with bio- or organic- molecular structures assembled by bottom-up process. ZnO nanorods with the average diameter of 100 nm and the height of 1.5μm were obtained on an Au/Ti/Si (111) substrate via microwave heating, which is an environmental harmonized system allowing fast heating. Aggregation of ZnO nanorods occurred on a single crystalline ZnMgO film and growth mechanism of ZnO nanorods was discussed. Using ZnO nanorods immobilized with enzymes, amperometric glucose sensors with the detection limit of 0.01mmol/L were fabricated.