Scheme 1.
(A) Schematic diagram with all steps selective layer preparation: (a)–seed layer formation by drop-casting (b)–hydrothermal growth (c)–PDA deposition (d)–immobilization of glucose oxidase. (B) Setup for electrochemical measurements: 1—working electrode, 2—Pt counter electrode, 3—reference Ag/AgCl electrode, 4—electrochemical cell with three electrodes, 5—potentiostat, 6—PC with set up for photo-electrochemical measurements, 7—light source (LED).