An amperometric glucose biosensor based on a tin oxide (SnO_2) electrode has been developed.The SnO_2 electrode is prepared by depositing the SnO_2 thin film onto a carbon electrode.To fabricate the SnO_2 amperometric...An amperometric glucose biosensor based on a tin oxide (SnO_2) electrode has been developed.The SnO_2 electrode is prepared by depositing the SnO_2 thin film onto a carbon electrode.To fabricate the SnO_2 amperometric glucose biosensor,the glucose oxidase and electron transfer mediator (ferrocenecarboxylic acid,FcA) are coimmobilized on the SnO_2 electrode using polyacrylamide.The detection range is up to glucose concentration of 520mg/dl as the applied potential is set at 300mV. Moreover,the most merit for the SnO_2 electrode as the base electrode of the SnO_2 amperometric glucose biosensor is that it can be operated at 150mV constant applied potential.The interference reduction,detection range,sensitivity and linearity are improved as the SnO_2 thin film is deposited onto a carbon electrode.Furthermore,due to the low cost substrate and simple fabrication characteristics,a disposable amperometric glucose biosensor based on the SnO_2 electrode has been realized in this study.展开更多
文摘An amperometric glucose biosensor based on a tin oxide (SnO_2) electrode has been developed.The SnO_2 electrode is prepared by depositing the SnO_2 thin film onto a carbon electrode.To fabricate the SnO_2 amperometric glucose biosensor,the glucose oxidase and electron transfer mediator (ferrocenecarboxylic acid,FcA) are coimmobilized on the SnO_2 electrode using polyacrylamide.The detection range is up to glucose concentration of 520mg/dl as the applied potential is set at 300mV. Moreover,the most merit for the SnO_2 electrode as the base electrode of the SnO_2 amperometric glucose biosensor is that it can be operated at 150mV constant applied potential.The interference reduction,detection range,sensitivity and linearity are improved as the SnO_2 thin film is deposited onto a carbon electrode.Furthermore,due to the low cost substrate and simple fabrication characteristics,a disposable amperometric glucose biosensor based on the SnO_2 electrode has been realized in this study.
