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- In relation to this article, we declare that there is no conflict of interest.
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Received October 29, 2019
Accepted November 26, 2019
Available online May 4, 2020
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수열합성법에 의한 Bi2WO6의 합성 및 그들의 광촉매 활성
The Synthesis of Bi2WO6 by Hydrothermal Process and Their Photocatalytic Activity
부경대학교 화학공학과, 48513 부산광역시 남구 용소로 45
Department of Chemical Engineering, Pukyong National University, 45 Yongsoro, Nam-ku, Busan, 48513, Korea
sshong@pknu.ac.kr
Korean Chemical Engineering Research, May 2020, 58(2), 313-318(6)
https://doi.org/10.9713/kcer.2020.58.2.313
https://doi.org/10.9713/kcer.2020.58.2.313
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Abstract
EGME, GL 및 EG와 물을 용매를 사용하여 Bi2WO6 산화물을 수열합성법으로 성공적으로 합성하였다. 이들 촉매들의 물리적 특성을 XRD, DRS, BET 및 SEM 등으로 분석하였고 제조된 촉매들을 사용하여 가시광선 조사 하에서의 로다민 B의 광분해 반응에서의 활성을 조사하였다. XRD의 분석 결과에 의하면 EGME 및 EG를 용매로 사용한 경우에는 Bi2WO6의 결정화가 잘 이루어졌다. 또한, 결정화가 잘 이루어진 Bi2WO6는 꽃 모양의 형상을 나타내었다. 180 °C 에서 EGME를 용매로 사용하여 제조된 Bi2WO6 촉매가 가장 높은 광분해 활성을 나타내었으며, EGME에 비해 물의 몰 비가 50% 이상으로 제조한 경우에 높은 광촉매 활성을 보여주었다.
Bi2WO6 were successfully synthesized using EGME, GL, EG and water as solvents by a conventional hydrothermal method. They were characterized by XRD, DRS, BET and SEM and we also investigated the photocatalytic activity of these materials for the decomposition of Rhodamin B under visible light irradiation. The XRD results revealed the successful synthesis well-crystallized Bi2WO6 crystals with Aurivillius structure when EGME and EG are used as solvents. In addition, the well-crystallized Bi2WO6 crystals showed the flower-like structure. The Bi2WO6 catalysts prepared at 180 °C using EGME as a solvent showed the highest photocatalytic activity. The Bi2WO6 catalysts prepared at mole ratio of H2O/EGME more than 50% showed high photocatalytic activity.
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