| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-환경·에너지 |
| 제목 |
Photocatalytic activity in visible light of TiO2 with carbon-fluorine introduced by Plasma |
| 초록 |
In this paper, CF4 plasma surface treatment is performed on commercial TiO2 to improve a photocatalytic efficiency. The photodegradation efficiency of TiO2 is significantly increased from 50.2% to 82.1% in 120 min via CF4 plasma treatment of TiO2. In addition, TiO2 treated with CF4 plasma exhibits a photodegradation rate constant of 0.0150 min-1, which is 2.6 times higher than that of TiO2 (0.0057 min-1). It is, thus, determined that CF4 plasma treatment effectively improves the photocatalytic effect of TiO2. It is attributed to the increase of oxygen vacancies by the introduction of heterogeneous elements of C and F atoms into TiO2 using CF4 plasma treatment. In addition, the F- ion species physically adsorbed on the TiO2 surface promotes the formation of hydroxy free radicals, so that the decomposition of rhodamine B occurs effectively. |
| 저자 |
이란은, 이혜련, 임채훈, 김대섭, 김석진, 정서경, 이영석
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| 소속 |
충남대 |
| 키워드 |
Titanium dioxide; Fluorination; Rhodamine B; CF4 Plasma |
| E-Mail |
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