| Degradation and mineralization of violet-3B dye using C-N-codoped TiO2 photocatalyst | |
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| 년도 | 2020 |
| 날짜 | 2020 |
| 페이지 / 학회지명 |
25(4), 52-535 / Environmental Engineering Research |
| 논문저자 | eza Audina Putri1, Safni Safni1, Novesar Jamarun2, Upita Septiani2, Moon-Kyung Kim3, Kyung-Duk Zoh3 |
| Link |
https://www.eeer.org/journal/view.php?number=1072
97회 연결
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1 boratory of Applied Analytical-Chemistry, Faculty of Mathematic and Natural Sciences, Andalas University, Padang 25163, Indonesia 2 Laboratory of Material, Faculty of Mathematic and Natural Sciences, Andalas University, Padang 25163, Indonesia 3 Institute of Health and Environment, Seoul National University, Seoul 08826, Korea Abstract The present study investigated the photodegradation of synthetic organic dye; violet-3B, without and with the addition of C-N-codoped TiO2 catalyst using a visible halogen-lamp as a light source. The catalyst was synthesized by using a peroxo sol-gel method with free-organic solvent. The effects of initial dye concentration, catalyst dosage, and pH solution on the photodegradation of violet-3B were examined. The efficiency of the photodegradation process for violet-3B dye was higher at neutral to less acidic pH. The kinetics reaction rate of photodegradation of violet-3B dye with the addition of C-N-codoped TiO2 followed pseudo-first order kinetics represented by the Langmuir-Hinshelwood model, and increasing the initial concentration of dyes decreased rate constants of photodegradation. Photodegradation of 5 mg L−1 violet-3B dye achieved 96% color removal within 240 min of irradiation in the presence of C-N-codoped TiO2 catalyst, and approximately 44% TOC was removed as a result of the mineralization. Keywords: C-N-codoped TiO2, HPLC, Kinetics, TOC, Vat-dye, Visible halogen-lamp |
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연구성과