Metal organic framework-derived Zn1−xCox-ZIF@Zn1−xCoxO hybrid photocatalyst with enhanced photocatalytic activity through synergistic effect. Issue 2 (20th December 2017)

• Record Type: Journal Article
• Authors: Yang, Xiaobing; Chen, Juan; Hu, Jiapeng; Zhao, Shenyun; Zhao, Jingyun; Luo, Xuetao
• Is Part Of: Catalysis science & technology. Volume 8:Issue 2(2018)
• Page Start: 573
• Page End: 579
• Publication Date: 2017-12-20
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c7cy01979c
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : A Zn1− x Co x -ZIF@Zn1− x Co x O hybrid photocatalyst, doped with different amounts of Co, was successfully fabricated through a novel metal organic framework (MOF)-derived method. Abstract : A Zn1− x Co x -ZIF@Zn1− x Co x O hybrid photocatalyst, doped with different amounts of Co, was successfully fabricated through a novel metal organic framework (MOF)-derived method. The synthesis procedure consists of the initial preparation of Zn1− x Co x -ZIF and then the formation of Zn1− x Co x O via Zn1− x Co x -ZIF-derived in situ transformation with AgNO3 to obtain the Zn1− x Co x -ZIF@Zn1− x Co x O hybrid photocatalyst. All samples were characterized by XRD, SEM, TEM, UV-vis, and FT-IR. The photocatalytic activity of all samples was evaluated by degradation of rhodamine B (RhB) solution under UV light and visible light. The results show that Zn1− x Co x -ZIF@Zn1− x Co x O hybrid photocatalysts exhibit high photocatalytic activity, and the doping of Co has great influence on the photocatalytic activity of Zn1− x Co x -ZIF@Zn1− x Co x O. Among these photocatalysts, Zn0.95 Co0.05 -ZIF@Zn0.95 Co0.05 O exhibits the highest photocatalytic activity. Zn0.95 Co0.05 -ZIF@Zn0.95 Co0.05 O can degrade 99.26% RhB under UV light, which is even higher than P25 (92.62%). Zn0.95 Co0.05 -ZIF@Zn0.95 Co0.05 O also exhibits a photoresponse to visible light, and was able to degrade 98.15% RhB under visible light irradiation. Furthermore, Zn0.95 Co0.05 -ZIF@Zn0.95 Co0.05 O also can degrade 95.83% RhB under visible light after four repeated cycles. The results indicate that Zn0.95 Co0.05 -ZIF@Zn0.95 Co0.05 O can be used as a highly efficient photocatalyst upon degradation of organic dye.