Anchoring superparamagnetic core–shells onto reduced graphene oxide: fabrication of Ni–carbon–rGO nanocomposite for effective adsorption and separation
Anchoring superparamagnetic core–shells onto reduced graphene oxide: fabrication of Ni–carbon–rGO nanocomposite for effective adsorption and separation
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DOI：
10.1039/c4ra14651d
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发表时间：
2015-01
期刊：
影响因子：
3.9
通讯作者：
Hang Du;Zhen Wang;Yinghao Chen;Yanyan Liu;Yushan Liu;Baojun Li;Xiangyu Wang;H. Cao
中科院分区：
文献类型：
--
作者：
Hang Du;Zhen Wang;Yinghao Chen;Yanyan Liu;Yushan Liu;Baojun Li;Xiangyu Wang;H. Cao
基于纳米复合材料的吸附技术是一种简单有效的废水处理方法。在本文中，通过水热过程和碳热还原合成了三维Ni-carbon-rGO（NGC）纳米复合材料。封装在碳壳中的磁性镍纳米颗粒（NP）固定在还原氧化石墨烯（rGO）片上。该 NGC 用作去除罗丹明 B (Rh-B) 的吸附剂。与其他吸附材料相比，NGC具有更高的吸附速率和效率，高达4.4 L g−1，并且具有良好的可回收性。固有的超顺磁性赋予NGC较高的分离效率和较大的吸附容量。出色的有机染料去除能力使 NGC 成为废水处理的有用候选者。
An adsorption technique based on nanocomposite materials is a simple and effective approach for the treatment of waste water. In this paper, a three-dimensional Ni–carbon–rGO (NGC) nanocomposite was synthesized through a hydrothermal process followed by carbonthermal reduction. The magnetic Ni nanoparticles (NPs) encapsulated in carbon shells were anchored onto reduced graphene oxide (rGO) sheets. This NGC was used as an adsorbent for rhodamine B (Rh-B) removal. Compared with other adsorbent materials, NGC exhibits higher adsorption rate and efficiency up to 4.4 L g−1 with good recyclability. The intrinsic superparamagnetism endows NGC enhanced separation efficiency with large adsorption capacity. The excellent removal ability for organic dyes makes NGC a useful candidate for wastewater treatment.