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Abstract
Wurtzite structural zinc oxide (ZnO) nanotetrapods were synthesised by a thermal evaporation method. These ZnO nanotetrapods were used for the construction of an electrochemical biosensor for detecting glucose. In the biosensor, the ZnO nanotetrapods acted as supporting materials for glucose oxidase (GOx) enzyme loading because of the large surface area to volume ratio. The results indicated that the biosensor with the structure of [polystyrene mixed with ZnO powder/GOx/ZnO nanotetrapod powder/Au electrode] exhibited the lowest glucose detection limit (∼0.5 mM). These results demonstrate that zinc oxide nanostructures have potential applications in biosensors.
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