可再生废纸来源的超磁化α-纤维素纤维处理危险的工程纳米材料,ACS Sustainable Chemistry & Engineering

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可再生废纸来源的超磁化α-纤维素纤维处理危险的工程纳米材料
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-02-01 00:00:00 , DOI: 10.1021/acssuschemeng.8b05268
Avinash A. Kadam , Saifullah Lone ₁ , Surendra Shinde , Jiwook Yang , Rijuta Ganesh Saratale , Ganesh Dattatraya Saratale , Jung-Suk Sung , Dae Young Kim , Gajanan Ghodake

Affiliation

工程纳米材料（ENM）对整个人类尤其是水生野生生物的健康构成有害影响。本文中，我们报告了通过纸屑来源的α-纤维素纤维（PW-αCF）的磁性复合材料（Fe ₃ O ₄ NPs）处理三种类型的ENM，即CuO，CoO和ZnO 。Fe ₃ O ₄ @PW-αCFs对（CuO），（CoO）和（ZnO）的去除效率分别为850、946和929 mg·g ^–1。在pH 6到7时观察到最佳吸附效果。因此，该系统基于PW-αCFs的羟基。另外，为验证实际应用，还可去除Fe ₃ O ₄的ENM去除能力@PW-αCFs在不同的水源中进行了评估，例如河流，池塘和废水（与CuO，CoO和ZnO掺加在一起）。此外，空前的能量色散谱图（EDS）映射用于说明ENMs在Fe ₃ O ₄ @PW-αCFs上的负载量，并揭示Fe ₃ O ₄ NPs表面在ENMs重质聚集体沉积中的作用。ENM在Fe ₃ O ₄ @PW-αCF表面上的牢固整合排除了ENM浸回到水性介质中的可能性。因此，证明了Fe ₃ O _4具有丰富的可用性及其功能，例如羟基，轻质，高表面积和快速磁分离等。@PW-αCFs是一种有吸引力的生物纳米复合材料，可用于各种应用中的ENM修复和利用。

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Treatment of Hazardous Engineered Nanomaterials by Supermagnetized α-Cellulose Fibers of Renewable Paper-Waste Origin

Engineered nanomaterials (ENMs) are posing detrimental ramifications to human health in general and aquatic wildlife in particular. Herein, we report treatment of three types of ENMs, namely, CuO, CoO, and ZnO by a magnetic composite (Fe₃O₄NPs) with α-cellulose fibers of paper-waste origin (PW-αCF). The removal efficiency of Fe₃O₄@PW-αCFs for (CuO), (CoO), and (ZnO) was obtained to be 850, 946, and 929 mg·g^–1, respectively. The adsorption efficacy observed optimum at pH 6 to 7; thus, this system was based on hydroxyl groups of PW-αCFs. Also, to validate the real-world applications, the ENM removal capacity of Fe₃O₄@PW-αCFs was assessed in different water sources such as a river, pond, and wastewater (spiked together with CuO, CoO, and ZnO). Furthermore, unprecedented energy dispersive spectrometric (EDS) mapping was employed to illustrate the ENMs loading on Fe₃O₄@PW-αCFs and to reveal the role of Fe₃O₄ NPs surface in the deposition of heavyweight aggregates of ENMs. The robust integration of ENMs onto Fe₃O₄@PW-αCF surfaces rules-out the ENMs leaching back into the aqueous media. Hence, abundant availability and their functionalities such as hydroxyl groups, lightweight, high-surface area, and rapid magnetic separation, proved Fe₃O₄@PW-αCFs as an attractive bionanocomposite material for ENMs remediation and utilization in various applications.

更新日期：2019-02-01

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