Journal
APPLIED SURFACE SCIENCE
Volume 420, Issue -, Pages 252-259Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2017.05.102
Keywords
CdS; MOF; Pyrolysis; Photocatalysis; Antibiotics
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Funding
- National Natural Science Fund of China (Foundation of Guangdong Province of China) [U1401235]
- Provincial Science and Technology Planning (Guangdong Province of China) [2016B020240005]
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The CdS/MOF-derived porous carbon (MPC) composite as an efficient visible-light-driven photocatalyst was prepared through the pyrolysis of ZIF-8 and subsequent growth of CdS. The porous and functionalized MPC enables intimate and discrete growth of CdS nanoparticles. This unique structure not only reduces the bulk recombination owing to nano-size effect of CdS, but also suppresses the surface recombination due to the discrete growth of CdS nanoparticles on MPC polyhedrons, which facilitates electron transfer and charge separation. Moreover, such a composite material possessed good adsorption ability toward the antibiotic pollutants because of the amino-functionalized surface. As a result, the as-prepared CdS/MPC composites showed excellent photocatalytic performance for the antibiotic degradation, significantly improving the photoactivity of CdS. Importantly, the CdS/MPC composite with the CdS loading of 20 wt% exhibited the highest photocatalytic efficiency of approximately 91% and apparent rate constant of 0.024 min(-1). (C) 2017 Elsevier B.V. All rights reserved.
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