| abstract |
The invention belongs to the technical fields of nano functional material, immune analysis and biosensing. Provided is a method for preparing a copper sulfide/silicon dioxide double weakened cadmium sulfide/carbon doped titanium dioxide insulin photoelectrochemical sensor. This method specifically uses the steric hindrance effect of silicon dioxide and the competitive consumption of copper sulfide on the electron donor ascorbic acid and the competitive absorption effect on the excitation light source to double weaken the photocurrent signal generated by the substrate cadmium sulfide/carbon doped titanium dioxide sensitized structure. , to achieve highly sensitive detection of insulin. The method has the advantages of simple preparation, low cost, rapid detection, high sensitivity and easy miniaturization. |