Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 504, Issue -, Pages 39-47Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.05.020
Keywords
MoS2; MIL-101; Nanosheets; Adsorption; Rhodamine B
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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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A MoS2 nanosheet-coated chromium terephthalate MIL-101 octahedron hybrid (denoted as MoS2/MIL-101) was prepared via a simple hydrothermal reaction. The obtained MoS2/MIL-101 hybrid exhibited a significantly enhanced adsorption ability toward rhodamine B (RhB) as compared with pure MoS2, MIL-101, and the physical mixture of the two. The results demonstrate that the MoS2/MIL-101 hybrid had a high uptake capacity (Q(m) approximate to 344.8 mg g(-1)) and fast adsorption rate for the removal of aqueous RhB. The excellent adsorption performance is likely related to the synergism of hydrogen bonding, pi-pi stacking interactions, and direct coordination between the MIL-101 substrate and RhB, as well as electrostatic interactions between MoS2 nanosheets and RhB. In particular, the uniform distribution of MoS2 nanosheets along with the negative charges on MIL-101 could have a strong interaction with the positively charged RhB, thus leading to an improvement in adsorption performance as observed for the MoS2/MIL-101 hybrid. Furthermore, MoS2/MIL-101 displayed good regenerability and reusability, making it attractive for the adsorption removal of aqueous RhB. (C) 2017 Published by Elsevier Inc.
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