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Multi-walled Carbon nanotube/amino-functionalized MIL-53(Fe) Composites: Remarkable Adsorptive Removal of Antibiotics From Aqueous Solutions

Multi-walled Carbon nanotube/amino-functionalized MIL-53(Fe) Composites: Remarkable Adsorptive Removal of Antibiotics From Aqueous Solutions

Weiping Xiong, Zhuotong Zeng, Xin Li, Guangming Zeng, Rong Xiao, Zhaohui Yang, Yaoyu Zhou, Chen Zhang, Min Cheng, Liang Hu, Chengyun Zhou, Lei Qin, Rui Xu, Yanru Zhang

Chemosphere. 2018 Nov;210:1061-1069.

PMID: 30208531

Abstract:

A novel adsorbent composite was synthesized by combining amino-functionalized MIL-53(Fe) with multi-walled carbon nanotubes (MWCNT), and used to adsorb tetracycline hydrochloride (TCN) and chlortetracycline hydrochloride (CTC). The maximum adsorption capacities of TCN and CTC over MWCNT/NH2-MIL-53(Fe) at 25 °C were 368.49 and 254.04 mg g-1, which are, respectively, 1.79 and 8.37 times higher than that of chaff biochar. Interestingly, the mesoporosity of MWCNT/NH2-MIL-53(Fe) significantly increased through introduction of MWCNT into NH2-MIL-53(Fe), which proved to be favorable for the production of active adsorption sites. Besides, the remarkably increased adsorption capacity can be ascribed to the hydrogen bonding between amino functional groups on MWCNT/NH2-MIL-53(Fe) and hydroxyl functional groups on TCN or CTC. Moreover, the π-π interaction between adsorbate and adsorbent was considered the main reason for the adsorption of TCN and CTC. The great adsorption capacity, as well as excellent reusability, demonstrated the potential application of MWCNT/NH2-MIL-53(Fe) in the removal of TCN and CTC from aqueous solutions.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP308068566-A	Carbon nanotube, multi-walled		308068-56-6	Price

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