We compared the plausible reaction mechanism and quantitative efficiency of highly self-organized TiO<sub>2</sub> nanotube (ntTiO<sub>2</sub>) film with TiO<sub>2</sub> powder. Film was fabricated by electrochemical...
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https://www.riss.kr/link?id=A101883122
2016
English
KCI등재
학술저널
8-14(7쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
We compared the plausible reaction mechanism and quantitative efficiency of highly self-organized TiO<sub>2</sub> nanotube (ntTiO<sub>2</sub>) film with TiO<sub>2</sub> powder. Film was fabricated by electrochemical...
We compared the plausible reaction mechanism and quantitative efficiency of highly self-organized TiO<sub>2</sub> nanotube (ntTiO<sub>2</sub>) film with TiO<sub>2</sub> powder. Film was fabricated by electrochemical potentiostatic anodization of titanium thin film in an ethylene-glycol electrolyte solution containing 0.3 wt% NH<sub>4</sub>F and 2 vol% deionized water. Nanotubes with a pore size of 80-100 nm were formed by anodization at 60 V for 3 h. Humic acid (HA) was degraded through photocatalytic degradation using the ntTiO<sub>2</sub> film. Pseudo first-order rate constants for 0.3 g of ntTiO<sub>2</sub>, 0.3 g TiO<sub>2</sub> powder, and 1 g TiO<sub>2</sub> powder were 0.081 min<sup>−1</sup>, 0.003 min<sup>−1</sup>, and 0.044 min<sup>−1</sup>, respectively. HA adsorption on the ntTiO<sub>2</sub> film was minimal while adsorption on the TiO<sub>2</sub> powder was about 20% based on thermogravimetric analysis. Approximately five-fold more normalized OH radicals were generated by the ntTiO<sub>2</sub> film than the TiO<sub>2</sub> powder. These quantitative findings explain why ntTiO<sub>2</sub> film showed superior photocatalytic performance to TiO<sub>2</sub> powder.
Estimation of Landfill Stabilization using Carbon-based Mass Balance Evaluation