Quantitative Comparison of the Photocatalytic Efficiency of TiO2 Nanotube Film and TiO2 Powderopen accessQuantitative Comparison of the Photocatalytic Efficiency of TiO2 Nanotube Film and TiO2 Powder
- Other Titles
- Quantitative Comparison of the Photocatalytic Efficiency of TiO2 Nanotube Film and TiO2 Powder
- Authors
- Jang, Jun-Won; Park, Sung Jik; Park, Jae Woo
- Issue Date
- May-2016
- Publisher
- 한국지하수토양환경학회
- Keywords
- TiO2 nanotubes; Electrostatic anodization; Humic acid; Adsorption effect; Terephthalic acid
- Citation
- 지하수토양환경, v.21, no.2, pp.8 - 14
- Indexed
- KCI
- Journal Title
- 지하수토양환경
- Volume
- 21
- Number
- 2
- Start Page
- 8
- End Page
- 14
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/23082
- DOI
- 10.7857/JSGE.2016.21.2.008
- ISSN
- 1598-6438
- Abstract
- We compared the plausible reaction mechanism and quantitative efficiency of highly self-organized TiO2 nanotube (ntTiO2) film with TiO2 powder. Film was fabricated by electrochemical potentiostatic anodization of titanium thin film in an ethylene-glycol electrolyte solution containing 0.3 wt% NH4F 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 ntTiO2 film. Pseudo first-order rate constants for 0.3 g of ntTiO2, 0.3 g TiO2 powder, and 1 g TiO2 powder were 0.081 min−1, 0.003 min−1, and 0.044 min−1, respectively. HA adsorption on the ntTiO2 film was minimal while adsorption on the TiO2 powder was about 20% based on thermogravimetric analysis. Approximately five-fold more normalized OH radicals were generated by the ntTiO2 film than the TiO2 powder. These quantitative findings explain why ntTiO2 film showed superior photocatalytic performance to TiO2 powder.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 건설환경공학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.