Wang Haibo, Wang Wei, Zhao Yufen, Xu Zhiwei, Chen Lei, Zhao Lihuan, Tian Xu, Sun Wanying
State Key Laboratory of Separation Membranes and Membrane Processes, School of Textiles, Tianjin Polytechnic University Tianjin 300387 China
RSC Adv. 2018 Feb 19;8(15):7899-7903. doi: 10.1039/c8ra00113h.
In this study, we report a large-scale and low cost approach for the synthesis of three-dimensional (3D) polyvinyl alcohol/carbon nanotubes nanoporous architecture using self-assembly method. Polyvinyl alcohol, serving as a cross-linking agent and adsorption conveyor, could effectively interconnect carbon nanotubes sequentially and also effectively store Ni(ii) ions. An outstanding adsorption of 225.6 mg g was achieved for 3D nanoporous structure, which was 18-fold more than that for carbon nanotube powders and much higher than that for other sorbents reported in literature. In addition, it was found that 3D nanoporous architectures remained intact after adsorption, which could recollect resources and avoid carbon nanotube leakage into water. Therefore, the designed 3D nanoporous architectures have a good potential application in environmental protection.
在本研究中，我们报道了一种利用自组装方法大规模、低成本合成三维（3D）聚乙烯醇/碳纳米管纳米多孔结构的方法。聚乙烯醇作为交联剂和吸附载体，能够有效地依次连接碳纳米管，并且还能有效地储存镍（II）离子。对于3D纳米多孔结构，实现了225.6 mg/g的出色吸附量，这比碳纳米管粉末的吸附量高18倍，且远高于文献中报道的其他吸附剂。此外，发现3D纳米多孔结构在吸附后保持完整，这可以回收资源并避免碳纳米管泄漏到水中。因此，所设计的3D纳米多孔结构在环境保护方面具有良好的潜在应用前景。
