Efficient charge separation between UiO-66 and ZnIn2S4 flowerlike 3D microspheres for photoelectronchemical properties

• Published in: Applied catalysis. B, Environmental Vol. 226; pp. 234 - 241
• Main Authors: Liu, Baibai, Liu, Xinjuan, Liu, Junying, Feng, Chengjie, Li, Zhu, Li, Can, Gong, Yinyan, Pan, Likun, Xu, Shiqing, Sun, Chang Q.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-06-2018
• Subjects: Co-catalyst; Flowerlike 3D microspheres; Photoelectronchemical; UiO-66; ZnIn2S4; Flowerlike 3D microspheres; Photoelectronchemical; UiO-66; Co-catalyst; ZnIn2S4
• ISSN: 0926-3373; 1873-3883
• DOI: 10.1016/j.apcatb.2017.12.052

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•ZnIn2S4/UiO-66 hybrid photocatalysts possess flowerlike 3D microspheres structure.•UiO-66 acts as an efficient co-catalyst integrated ZnIn2S4 for photoelectronchemical catalysis.•High Cr(VI) reduction rates of 99% was achieved by ZnIn2S4/20 wt.% UiO-66 under visible light.•Photo-generated electrons govern the Cr(VI) reduction of process.
It is still a great challenge to develop efficient semiconductive photocatalysts responding to visible light radiation. We show an efficient ZnIn2S4/UiO-66 hybrid photocatalysts with flowerlike 3D microspheres synthesized via a facile solvothermal method. A 20 wt.% UiO-66 emersion raises the Cr(VI) reduction rate up to 99% and higher after 60 min visible light irradiation. The substantial enhancement of photocatalytic and photoelectronchemical activity of pure ZnIn2S4 by UiO-66 addition is attributed to the ZnIn2S4/UiO-66 interfacial charge transferring and more active sites for pollute adsorption.