Experimental Study on the Plant Dye Sensitized TiO₂ Electrode

Abstract

In this paper, Ti sheets were anodized to obtain TiO2 nanotube arrays electrodes. The impact of different oxidation conditions on photoelectric properties of TiO2 nanotube arrays were discussed by the photocurrent density, and the optimal oxidation conditions of TiO2 which had good photoelectric properties were found. Pigments were extracted from fresh spinach leaves, tomatoes and carrots, and to be used as plant dye to sensitize TiO2 electrodes. The photocurrent density and the Incident Photon to Current Efficiency (IPCE) of the plant dye sensitized TiO2 electrodes were examined.