NDLI: Effect of the Structure of Anodic TiO2 Nanotube Arrays on Its Photoelectrocatalytic Activity

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Effect of the Structure of Anodic TiO2 Nanotube Arrays on Its Photoelectrocatalytic Activity

Content Provider	Semantic Scholar
Author	Shi, Jidong
Copyright Year	2020
Abstract	Anodic TiO2 nanotube arrays (TNTs) exhibit excellent photoelectrocatalytic activities. However, the influence of TNTs structure on the photoelectrocatalytic activity has not yet been explored systematically. In this study, TNTs were prepared through anodization of Ti foils in electrolytic solution followed by annealing at 350 C. The morphologies and microstructures of the as-prepared TNTs were characterized by scanning electron microscopy and X-ray diffraction. The photoelectrocatalytic activity of the as-prepared TNTs was tested through the degradation of methyl orange dye. The photoelectrocatalytic activity of TNTs increases with its length. It only takes 28 min for 2.90 um long TNTs to reach 98% degradation percentage, in comparison with that of 36min for 4.16 um long TNTs and 40 min for 7.72μm long TNTs. Better integrity and smoothness of TNTs presents better photoelectrocatalytic activity. E.g.: TNTs annealed at 350 C for 1h presents better integrity and only take 28 min to obtain 98% degradation percentage, in comparison with that of 32 min for TNTs annealed at 350 C for 3h. The crystal structure of TNTs with preferred orientation shows better photoelectrocatalytic activity than that with random orientation, which only takes 24 min to reach 98% degradation percentage, in comparison with that of 36 min for random orientated TNTs. Consequently, the photoelectrocatalytic activity of TNTs is highly related with the structure of TNTs.
Starting Page	845
Ending Page	856
Page Count	12
File Format	PDF HTM / HTML
DOI	10.20964/2020.01.12
Alternate Webpage(s)	http://www.electrochemsci.org/papers/vol15/150100845.pdf
Alternate Webpage(s)	https://doi.org/10.20964/2020.01.12
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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