Citation:
ZHUANG Jia, QIN Hai-Yang, LI Lin-Feng, ZHOU Ying, JIA Chun-Yang, WAN Zhong-Quan, ZENG Xian-Guang. Hydrothermal Synthesis of a Dysmorphic Double Layer Structure TiO2 Nanorod Films and Its Properties[J]. Chinese Journal of Inorganic Chemistry,
;2013, 29(5): 1057-1064.
doi:
10.3969/j.issn.1001-4861.2013.00.179
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A type of double layer(array-cluster)TiO2 films were prepared with mixed solution of hydrochloric acid and tetrabutyl titanate (TBOT) by a hydrothermal method at specific reaction condition. It was found that the TiO2 films on the substrate has a two-layer structure and has the tetragonal rutile phase observed from the field emission scaning electron microscopy (FESEM) and the X-ray diffraction (XRD). Moreover, the subjacent layer of the two-layer structure were TiO2 rods array, while the supernatant layer was TiO2 rods clusters, and microscopic structure of these rods all are made of smaller TiO2 nanorods(25~65 nm). This two-layer structure of TiO2 films can favors to acquiring more light and adsorbing more dye, and could provide a fast circulation channel for photon-generated electrons. The thickness of this type of TiO2 films in supernatant layer can be varied by changing initial reactant concentration, growth time or substrate placed angles. And without any modification treatment, a light-to- electricity conversion effciency of DSSC with TiO2 nanorod array-cluster films can enhance 2.6 time in comparison with only TiO2 nanorod array films.
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