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Adsorption of tetracycline antibiotics from aqueous solutions on nanocomposite multi-walled carbon nanotube functionalized MIL-53(Fe) as new adsorbent

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成果类型:
期刊论文
作者:
Xiong, Weiping;Zeng, Guangming*;Yang, Zhaohui*;Zhou, Yaoyu;Zhang, Chen;Cheng, Min;Liu, Yang;Hu, Liang;Wan, Jia;Zhou, Chengyun;Xu, Rui;Li, Xin
通讯作者:
Zeng, Guangming;Yang, Zhaohui
作者机构:
[Yang, Zhaohui; Zeng, Guangming; Yang, ZH; Zhang, Chen; Liu, Yang; Hu, Liang; Xiong, Weiping; Cheng, Min; Li, Xin; Xu, Rui; Wan, Jia; Zhou, Chengyun] Hunan Univ, Coll Environm Sci & Engn, Changsha 410032, Hunan, Peoples R China.
[Yang, Zhaohui; Zhang, Chen; Liu, Yang; Hu, Liang; Xiong, Weiping; Cheng, Min; Li, Xin; Zeng, Guangming; Xu, Rui; Wan, Jia; Zhou, Chengyun] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410032, Hunan, Peoples R China.
[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410123, Hunan, Peoples R China.
通讯机构:
[Zeng, GM; Yang, ZH] Hunan Univ, Coll Environm Sci & Engn, Changsha 410032, Hunan, Peoples R China.
语种:
英文
关键词:
Adsorption;Tetracycline antibiotics;π-π interactions;MWCNT nanocomposite
期刊:
Science of the Total Environment
ISSN:
0048-9697
年:
2018
卷:
627
页码:
235-244
基金类别:
National Natural Science Foundation of China [51521006, 51378190, 51578223, 51709103]; Program for Changjiang Scholars and Innovative Research Team in University [IRT-13R17]; Fundamental Research Funds for the Central Universities [531107051080]; Key Research and Development Program of Hunan Province [2017SK2242]
机构署名:
本校为其他机构
院系归属:
资源环境学院
摘要:
Adsorption of tetracycline antibiotics from aqueous solutions by a multi-walled carbon nanotube (MWCNT) loaded iron metal-organic framework (MIL-53(Fe)) composite was studied. The adsorbent was characterized by environmental scanning electron microscope, energy dispersive X-ray spectroscopy, brunauer-emmett-teller, thermogravimetric analysis, X-ray diffraction, fourier transform infrared spectrum, and X-ray photoelectron spectrum. The adsorption kinetics of tetracycline hydrochloride (TCN), oxytetracycline hydrochloride (OTC), and chlortetracycline hydrochloride (CTC) were all well fitted to the pseudo-second-order equation as well as the adsorption isotherms could be well delineated via Langmuir equations. The main influencing factors such as pH and ionic strength were studied in detail. At initial pH of 7.0, maximum adsorption capacity of TCN, OTC and CTC on MWCNT/MIL-53(Fe) was 364.37, 325.59, 180.68 mg&middot;g<sup>&minus;1</sup>at 25 &deg;C, which was 1.25, 8.28 and 3.34 times than that of single MWCNT, respectively. The adsorption capacity of TCS for this adsorbent was in the order: TCN &gt;OTC &gt;CTC, which was determined by the adsorbate molecule magnitude. In addition, &pi;-&pi;adsorbate-adsorbent interactions played an important role during the adsorption process. The excellent reusability and great water stability indicated the potential application of this novel composite in the removal of TCS from aqueous solutions.<br/> &copy;2018

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