Kohli Punit, Wharton John E, Braide Otonye, Martin Charles R
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA.
J Nanosci Nanotechnol. 2004 Jul;4(6):605-10. doi: 10.1166/jnn.2004.015.
Nanotube-containing membranes prepared by the template method show promise for use as highly selective filters for membrane-based chemical and biological separations. Most of the work to date has been done on gold nanotubes prepared by electroless deposition of Au within the pores of polymeric filtration membranes. These polymeric filters have very low porosities (< 1%), and, as a result, the flux through Au nanotube membranes based on these templates is very low. In contrast, the other popular template membranes-anodic aluminas-have high porosities-30% to 50%. In spite of this potential advantage of anodic alumina templates, there have been no reports of electrolessly plated Au nanotubes within the pores of these templates. This is because the electroless plating method used to deposit Au nanotubes in polymeric templates does not work in aluminas. We have developed a modified electroless plating strategy that can be used to deposit high-quality Au nanotubes within the pores of the alumina templates. We describe this new plating method here.
通过模板法制备的含纳米管膜有望用作基于膜的化学和生物分离的高选择性过滤器。迄今为止，大多数工作是在通过在聚合物过滤膜的孔内化学镀Au制备的金纳米管上进行的。这些聚合物过滤器的孔隙率非常低（<1%），因此，基于这些模板的金纳米管膜的通量非常低。相比之下，另一种流行的模板膜——阳极氧化铝——具有较高的孔隙率，为30%至50%。尽管阳极氧化铝模板具有这一潜在优势，但尚无关于在这些模板的孔内化学镀Au纳米管的报道。这是因为用于在聚合物模板中沉积Au纳米管的化学镀方法在氧化铝中不起作用。我们已经开发出一种改进的化学镀策略，可用于在氧化铝模板的孔内沉积高质量的Au纳米管。我们在此描述这种新的镀覆方法。
