摘要
The shape-controlled silver nanostructures have been widely used for template synthesis of metal nanostructures with desired morphologies and compositions for specific applications by galvanic replacement reaction,while the silver is sacrificed as oxidized to silver ion and abandoned as by-products.In view of the broad application prospect of the obtained metal nanostructures,the cost and environment problems after the template reactions should be taken into account for the large scale production in the future.To solve this problem,we conceptually demonstrate that the wasted AgCl generated from the template reactions can be easily recycled for the synthesis of valuable Ag nanowires.As representative examples,the average recovery of silver can be about 69.8%-84.6% after the template synthesis of Au/Pt nanostructures.The resynthesized Ag nanowires show uniform size distribution and excellent physical and chemical properties for the fabrication of transparent electrode and template synthesis.
利用银纳米材料的反应活性,通过模板反应可以制备形貌和结构可控的多种金属纳米结构,然而,在模板反应过程中,银纳米模板剂通常被氧化成银离子作为副产物被遗弃.考虑到金属纳米结构具有的广泛应用前景,以银为模板剂大规模制备各种金属纳米结构过程中的成本和环境问题必须予以关注.为了解决这个问题,我们对此类模板反应过程中所产生的废弃副产物氯化银进行了回收,并以此为原料成功的制备出高质量的银纳米线.以模板反应制备金/铂纳米结构为例,银的平均回收率可达到69.8%~84.6%.此外,利用废弃副产物重新合成的银纳米线具有均一的尺寸分布,在模板反应和制备透明导电电极方面表现出优异的化学和物理性能.
基金
supported by the National Natural Science Foundation of China(21431006)
the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(21521001)
the National Basic Research Program of China(2014CB931800 and 2013CB931800)
the Users with Excellence and Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(CAS)(2015HSC-UE007 and 2015SRG-HSC038)
the CAS(KJZD-EW-M01-1)
