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C3N4 anchored ZIF 8 composites: Photo-regenerable, high capacity sorbents as adsorptive photocatalysts for the effective removal of tetracycline from water

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Authors
Panneri, S.
Thomas, M.
Ganguly, P.
Nair, Balagopal
Mohamed, A.
Warrier, K.
Hareesh, U.
Date
2017
Type
Journal Article

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Panneri, S. and Thomas, M. and Ganguly, P. and Nair, B. and Mohamed, A. and Warrier, K. and Hareesh, U. 2017. C3N4 anchored ZIF 8 composites: Photo-regenerable, high capacity sorbents as adsorptive photocatalysts for the effective removal of tetracycline from water. Catalysis Science & Technology. 7 (10): pp. 2118-2128.
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Catalysis Science & Technology
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Nanochemistry Research Institute
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Abstract

© 2017 The Royal Society of Chemistry. Materials combining the abilities of adsorption and photocatalysis provide a facile solution for pollutant disposal as secondary remediation processes are avoided. Herein, we report a simple strategy for the development of C 3 N 4 anchored ZIF-8 microcrystals as sheathed architectures for the highly efficient adsorption and sunlight induced photocatalytic degradation of tetracycline from solution. An adsorption capacity as high as 420 mg g -1 of adsorbent was realized for a composition containing 60:40 wt% of C 3 N 4 and ZIF. Subsequently, the adsorbed tetracycline was degraded to over 96% in 1 h of sunlight exposure. The effects of pH and adsorbate concentration are studied and valid adsorption and degradation kinetic models are arrived at. The bifunctional composite thus developed offers a photo-regenerable adsorbent for the effective removal of an emerging hazardous contaminant.