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Molecules 2018, 23(6), 1485; https://doi.org/10.3390/molecules23061485

A Novel Cyclodextrin-Functionalized Hybrid Silicon Wastewater Nano-Adsorbent Material and Its Adsorption Properties

1,2,3
,
1,2,3
,
1,2,3
,
1,3
,
1,2,3
and
1,2,3,*
1
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
2
School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
3
Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi 214122, China
*
Author to whom correspondence should be addressed.
Academic Editor: Bernard Martel
Received: 20 May 2018 / Revised: 9 June 2018 / Accepted: 13 June 2018 / Published: 19 June 2018
(This article belongs to the Special Issue Cyclodextrin Chemistry 2018)
Full-Text   |   PDF [4847 KB, uploaded 19 June 2018]   |  

Abstract

A novel cyclodextrin-functionalized hybrid silicon nano-adsorbent material (6-EA-β-CD-Si) was synthesized via the nucleophilic substitution method. The structure was detected by Fourier transform infrared (FT-IR), X-ray, thermogravimetric analysis, and Brunauer-Emmett-Teller (BET) analysis. Results reveal that the BET surface area of 6-EA-β-CD-Si is 240 m2/g and the average pore size is 4.16 nm. The adsorption properties of 6-EA-β-CD-Si onto methylene blue (MB) were studied and fitted with adsorption kinetic models. Both the Freundlich adsorption isotherm model and pseudo-second-order model were fitted with well shows that the multi-layer adsorption with chemisorption and physisorption co-existing in the system. The maximum adsorption capacities are 39.37, 39.21, 36.90, and 36.36 mg/g at temperatures 303, 313, 323, and 333 K, respectively. The maximum removal rate of MB could reach 99.5%, indicating the potential application value of 6-EA-β-CD-Si in wastewater treatment. The adsorption mechanisms of 6-EA-β-CD-Si showed that the hydrophobic cave of β-CD plays an important role on the adsorption of MB. View Full-Text
Keywords: β-cyclodextrin; hybrid silicon; nano-adsorbent material; adsorption β-cyclodextrin; hybrid silicon; nano-adsorbent material; adsorption
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Li, J.; Qiu, C.; Fan, H.; Bai, Y.; Jin, Z.; Wang, J. A Novel Cyclodextrin-Functionalized Hybrid Silicon Wastewater Nano-Adsorbent Material and Its Adsorption Properties. Molecules 2018, 23, 1485.

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