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Preparation and catalytic activity of magnetic bimetallic nickel/copper nanowires

机译：磁性双金属镍/铜纳米线的制备及催化活性

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摘要

Nowadays, 4-nitrophenol (4-NP), one of the most toxic pollutants of waste water, is capturing more attention in the field of sewage disposal. In the present study, bimetallic Ni/Cu nanowires were successfully prepared via a simple approach of liquid phase reduction of Ni and transmetalation reaction of Cu assisted by a magnetic field. In addition, the bimetallic nanocomposite was developed as a new catalyst to catalyze the reduction of 4-NP for the first time. The characterization results confirmed that the as-prepared products were bimetallic Ni/Cu nanowires with admirable linear structure. Furthermore, the hysteresis loop showed that bimetallic Ni/Cu nanowires were paramagnetic materials. More importantly, the catalysis results showed that bimetallic Ni/Cu nanowires possessed appealing catalytic performance and great cycle efficiency compared with other catalysts published in the previous literature. In general, the novel catalyst is able to reduce the product costs significantly resulting from noble-metal free components and a facile preparation approach coupled with commendable catalytic performance. In addition, it is easy to separate from the reaction mixture owing to their intrinsic magnetic properties. Therefore, bimetallic Ni/Cu nanowires hold great potential for industrial effluent disposal purposes.
机译：如今，废水中毒性最强的污染物之一4-硝基苯酚（4-NP）在污水处理领域引起了越来越多的关注。在本研究中，通过一种简单的液相还原Ni的方法和磁场辅助Cu的金属转移反应的成功方法，成功地制备了双金属Ni / Cu纳米线。此外，双金属纳米复合材料被开发为一种新型催化剂，首次催化4-NP的还原。表征结果证实了所制备的产物是具有令人赞叹的线性结构的双金属Ni / Cu纳米线。此外，磁滞回线表明双金属Ni / Cu纳米线是顺磁性材料。更重要的是，催化结果表明，与先前文献中公开的其他催化剂相比，双金属Ni / Cu纳米线具有吸引人的催化性能和出色的循环效率。通常，该新型催化剂能够显着降低由不含贵金属的组分和简便的制备方法以及值得赞扬的催化性能引起的产物成本。另外，由于其固有的磁性，很容易从反应混合物中分离出来。因此，双金属镍/铜纳米线在工业废水处理方面具有巨大潜力。

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