Efficient Adsorption of Cu(II) Ions by a Laminar Nanocomposite of Multi-Walled Carbon Nanotubes Coupled with Fungal Mycelium in Aqueous Solution
Efficient Adsorption of Cu(II) Ions by a Laminar Nanocomposite of Multi-Walled Carbon Nanotubes Coupled with Fungal Mycelium in Aqueous Solution
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水溶液中多壁碳纳米管与真菌菌丝体耦合的层状纳米复合材料对 Cu(II) 离子的高效吸附
DOI：
10.1166/nnl.2019.3014
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发表时间：
2019-10
影响因子：
--
通讯作者：
Ding Li
中科院分区：
文献类型：
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作者：
Zhexu Ding;Haiyu Yang;Min Du;Xiaofang Ruan;Jun Luo;Sha Chen;Ding Li
铜在电力工业中的大量使用已严重污染了水环境。为了解决这个问题，真菌生物质与纳米材料相结合被认为是一种有效的方法来吸附废水中的重金属。在这项工作中，一种新型复合材料
合成了“真菌菌丝体偶联碳纳米管”（FM-CNTs），并将其用于吸附水溶液中的Cu（II）离子。开始，采用高锰酸钾和浓硝酸作为强氧化剂对碳纳米管进行表面改性，使碳纳米管表面产生羧基
用于与FM表面的胺基偶联的基团。其次，利用SEM-EDX、FT-IR、XPS和TGA等表征手段研究了FM-CNTs与Cu（II）离子的相互作用。表征结果表明，FM-CNTs的表面明显
吸附Cu（II）离子后发生变化。此外，还研究了pH对FM-CNTs吸附Cu（II）的影响，结果表明，FM-CNTs在pH为5时吸附性能最好。最后，采用Langmuir-Freundlich等温模型对吸附行为进行了分析。
FM-CNT用于Cu（II）。FM-CNTs对Cu（II）的吸附符合Langmuir吸附模型，FM-CNTs对Cu（II）的最大吸附量为342.22 mg/g。更重要的是，FM-CNTs表现出比真菌菌丝体更好的吸附能力
一个人总体而言，FM-CNTs对Cu（II）离子具有良好的吸附性能，极大地拓宽了其在铜污染废水处理中的应用前景。
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 FMCNTs 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.