수열합성법에 의한 Bi2WO6의 합성 및 그들의 광촉매 활성

홍성수; Seong-Soo Hong

Korean Chemical Engineering Research, Vol.58, No.2, 313-318, April, 2020

DOI10.9713/kcer.2020.58.2.313 Export Citation

수열합성법에 의한 Bi2WO6의 합성 및 그들의 광촉매 활성

The Synthesis of Bi2WO6 by Hydrothermal Process and Their Photocatalytic Activity

홍성수 ^†

부경대학교 화학공학과, 48513 부산광역시 남구 용소로 45

Seong-Soo Hong^†

Department of Chemical Engineering, Pukyong National University, 45 Yongsoro, Nam-ku, Busan, 48513, Korea

E-mail:

초록

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.

Keywords:Bi2WO6 catalysts;Hydrothermal method;Photocatalytic decomposition of Rhodamin B

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[Related Articles]

[1] Konstantinou IK, Albanis TA, Appl. Catal. B: Environ., 49(1), 1 (2004)

[2] Kudo A, Steinberg M, Bard AJ, Campton A, Fox MA, Mallouk TE, Webber SE, White JM, Catal. Lett., 5, 61 (1990)

[3] Guangcheng X, Jinhua Y, Chem. Commun., 46, 1893 (2000)

[4] Ye D, Li DZ, Zhang W, Sun M, Hu Y, Zhang Y, Fu X, J. Phys Chem C, 112, 17351 (2008)

[5] Zou Z, Ye J, Sayama K, Arakawa H, Nature, 414, 625 (2001)

[6] Fu H, Pan C, Yao W, Zhu Y, J. Phys Chem C, 109, 22432 (2005)

[7] Hu SP, Xu CY, Zhen L, Mater. Lett., 95, 117 (2013)

[8] Zhang L, Wang W, Zhou L, Xu H, Small, 9, 1618 (2007)

[9] Zhang C, Zhu Y, Chem. Mater., 17, 3537 (2005)

[10] Zhang L, Man Y, Zhu Y, Catalysis, 1, 841 (2011)

[11] Shang M, Wang W, Xu H, Crys. Grow. Design, 9, 991 (2009)

[12] Verma S, Joy PA, Khollam YB, Potdar HS, Deshpande SB, Mater. Lett., 58, 1092 (2004)

[13] He ZQ, Shi YQ, Gao C, Wen LM, Chen JM, Song S, J. Phys. Chem. C, 118, 389 (2014)

[14] Jung WY, Hong SS, J. Ind. Eng. Chem., 19(1), 157 (2013)