基于不同CNT/TiO2/Au复合物的电化学传感及细胞的高灵敏检测

In this paper, we firstly prepared three different TiO2/Au nanocomposites with CNT. Then the TiO2/Au/CNT nanocomposites were coated on the carbon papers to form the modified electrodes. We researched the electrochemical property before and after coated the cells of the probe K3[Fe(CN)6] by the means of electrochemical method. Compared with electrochemical signals on bare carbon paper and nanocomposite modified substrates, the significantly enhanced electrochemical signals on the modified electrodes covered with cancer cells have been observed. Therefore, the novel electrochemical biosensors have potential application in the development of the biocompatible and multi-signal responsive biosensors for the early diagnosis of cancers.