Heterojunction Structure ZnO/TiO₂ Nanorods with Enhanced Photoelectrochemical Properties

Abstract:

This paper describes a simple two-step hydrothermal method for the design of heterojunction structure combined with TiO₂ nanorods coated with ZnO nanoparticles. TiO₂ nanorods on F-doped tin oxide (FTO) conducting glass are synthesized by hydrothermal method and ZnO coating is prepared through a two-step procedure. The XRD patterns confirm that the nanostructure consists of rutile TiO₂ and wurtzite ZnO without any other impure phase. The FE-SEM results show that ZnO is uniformly distributing on the surface of TiO₂ nanorods, forming a well-connecting heterojunction. PL studies and UV-vis absorption spectra present the enhanced optical performance of ZnO/TiO₂ heterojunction. The heterojunction structure ZnO/TiO₂ nanorods show excellent photoelectrochemical performance. The performance and the preparation parameters are also optimized accordingly.

• Periodical: Key Engineering Materials (Volume 726)
• Pages: 333-337
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.726.333
• Online since: January 2017
• Authors: Wen Jian Feng, Liang You Lin, Hai Jin Li, Ying Peng Gong*, Bo Chi
• Keywords: Heterojunction, Hydrothermal, Photoelectrochemical Properties, TiO₂ Nanorods, ZNO

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