| 학회 |
한국화학공학회 |
| 학술대회 |
2014년 가을 (10/22 ~ 10/24, 대전 DCC) |
| 권호 |
20권 2호, p.2245 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Photocatalytic activity meso-porous zirconia nanoparticles modified with BiOI under simulated solar light irradiation |
| 초록 |
BiOI modified zirconia (BiOI-ZrO2) nanoparticles were fabricated using precipitation-deposition method. The physicochemical properties of BiOI/ZrO2 were studied through X-ray diffraction pattern (PRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), B.E.T-surface area, X-ray photoelectron spectroscopy (XPS), UV−vis diffuse reflectance spectroscopy (UV-vis-DRS) and photoluminescence (PL) spectroscopy techniques. The absorption maximum of ZrO2 was shifted to the visible region after sensitization with BiOI. B.E.T. surface area results inferred that the prepared hetero-junctions were meso-porous in nature. The photocatalytic activity of BiOI-ZrO2 toward the degradation of methyl violet (MV) dye under simulated solar light irradiation was investigated in detail. It was revealed that 3 % BiOI-ZrO2 exhibited higher photocatalytic performance (98 % of MV degradation) compared with ZrO2 and BiOI. The enhancement in the photocatalytic activity of BiOI-ZrO2 was contributed by the sensitization effect of BiOI, suppression of electron-hole recombination and the formation of p-n heterojunction. |
| 저자 |
Kumaravel Vignesh1, 곽병섭2, 강미숙2
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| 소속 |
1Yeungnam Univ., 2영남대 |
| 키워드 |
Photocatalysis; Solar light; ZrO2; BiOI; Methyl violet |
| E-Mail |
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| 원문파일 |
초록 보기 |
