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Efficient Adsorption of Cu(II) Ions by a Laminar Nanocomposite of Multi-Walled Carbon Nanotubes Coupled with Fungal Mycelium in Aqueous Solution

文献类型： 外文期刊

作者： Ding, Zhexu 1 ; Yang, Haiyu 1 ; Du, Min 1 ; Ruan, Xiaofang 1 ; Luo, Jun 1 ; Chen, Sha 1 ; Li, Ding 1 ;

作者机构： 1.Hunan Univ Technol, Sch Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China

2.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China

3.Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China

关键词： Carbon Nanotubes; Fungal Immobilization; Cu(II) Adsorption; Adsorption Isotherms

期刊名称：NANOSCIENCE AND NANOTECHNOLOGY LETTERS （ 影响因子：1.128； 五年影响因子：0.985 ）

ISSN： 1941-4900

年卷期： 2019 年 11 卷 10 期

页码：

收录情况： SCI

摘要： Nowadays, extensive use of copper in electric industries has severely contaminated aquatic environments. To address this issue, combining fungal biomass with nanomaterials is considered as an efficient way for adsorbing heavy metals from wastewater. In this work, a novel composite material "Fungal mycelium coupled with Carbon nanotubes" (FM-CNTs) was synthesized and used for adsorption of Cu(II) ions in aqueous solution. To begin with, potassium permanganate and concentrated nitric acid were used as strong oxidants to modify the surface of CNTs, creating additional carboxyl groups for coupling with amine groups from the surface of FM. Next, various characterization approaches such as SEM-EDX, FT-IR, XPS and TGA, were used to investigate the interaction between FM-CNTs and Cu(II) ions. Characterization results showed that the surface of FM-CNTs were significantly changed after absorbing Cu(II) ions. Further, the effect of pH on adsorption capacity of FM-CNTs for Cu(II) was explored, showing that FM-CNTs had the best adsorption performance at pH of 5. Finally, Langmuir-Freundlich isothermal models were performed to analyze the adsorption behavior of FM-CNTs for Cu(II). The experimental data from the adsorption of Cu(II) by FM-CNTs were best fitted to the Langmuir model, and the maximum adsorption amount of the FM-CNTs for Cu(II) was found to be 342.22 mg/g. More importantly, FM-CNTs showed better adsorption capacity than fungal mycelium alone. Overall, FM-CNTs exhibited excellent performance for adsorption of Cu(II) ions, thus greatly broadening its application prospects in copper-contaminated wastewater treatment.

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