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Photocurrent Properties of TiO2 Nanorods Grown on FTO by Hydrothermal Method
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 Title & Authors
Photocurrent Properties of TiO2 Nanorods Grown on FTO by Hydrothermal Method
Kim, Hyun; Yang, Bee Lyong;
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 Abstract
In this work, we undertake a comparative study of the crystallographic microstructures and photo-catalytic properties of rutile nanorods grown on FTO facing up and down by a hydrothermal method. An analysis of the fine structures showed that nanorods grown on FTO facing up were mixed with sea urchin and microsphere. These structures induced a vertical orientation of the nanorods on FTO. The saturated photocurrent densities of the nanorods grown both up and down were in the former case, the IPCE was increased to 10% at 300~350 nm. The onset potential ( flat band potential) of the nanorods grown on FTO facing up is negatively shifted to a value of -0.31 V. This is caused by an increase in the surface state, in this case the number of oxygen vacancies, and by the formation of . Therefore, the FTO facing direction is considered as a critical factor during the hydrothermal reaction for growth so as to develop an efficient photo-catalytic system.
 Keywords
Titanium dioxide() nanorod;Hydrothermal method;FTO facing;Photo-activity;
 Language
English
 Cited by
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