Mixed ceria-based metal oxides biosensor for operation in oxygen restrictive environments.

摘要: The unique catalytic, electrochemical, and oxygen storage properties of ceria mixed ceria/titania hybrid composites were used to fabricate a new type electrochemical enzyme biosensor. These materials provided increased analytical performance possibilities for operation in oxygen-free conditions an oxidase biosensor using tyrosinase as model example. investigation the enzymatic reaction presence absence was first carried out cyclic voltammetry. results identify role each metal oxide immobilization matrix simple amperometric detection phenol dopamine. optimized characterized with respect response time, limit, linear concentration range, sensitivity, kinetic parameters. limit nanomolar 9.0 × 10−9 M sensitivity 86 mA M−1 5.6...