| 침전 반응에 의한 가시광 광촉매 Bismuth Vanadate 합성 |
| 김상문, 이재용1, 문추연1, 이헌수2 |
아셈(Advanced Ceramic Electronic Materials)
1경운대학교 보건대학 한방자원학부
2대구공업대학 전기전자계열 |
| Synthesis of Bismuth Vanadate as Visible-light Photocatalyst by Precipitation Reaction |
| Sang-Mun Kim, Jae-Yong Lee1, Choo-Yeun Mun1, Hean-Soo Lee2 |
ACEM(Advanced Ceramic Electronic Materials) Co.
1School of Herb Medicine Resource, Kyungwoon University
2Department of Electro-Electric Engineering, Daegu Technical University |
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| ABSTRACT |
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Bismuth vanadate($BiVO_4$) with monoclinic phase as photocatalyst under visible light is synthesized by precipitation reaction in hot water. Properties such as crystal phase, particle morphology and visual light absorbance as well as the effects of thermal treatment for $BiVO_4$ powders are investigated. $BiVO_4$ powders with both single monoclinic phase and 0.2 ${mu}m$ in particle size are synthesized when precipitate is stirred in water for 5 h at 95$^{circ}C$. Well-developed monoclinic phase and light absorption property under 535 nm are observed as a result of thermal treatment for 1 h at 300$^{circ}C$ after precipitation reaction in water for 5 h at 95$^{circ}C$. Degradation of monoclinic crystal is found in firing above 350$^{circ}C$, and particle growth is occurred in firing above 550$^{circ}C$. |
| Key words:
Photocatalyst, Bismuth vanadate, $BiVO_4$, Monoclinic phase |
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