posted on 2022-01-20, 19:33authored byTingting Liu, Zizhu Wang, Mingxi Liu, Tao Hu, Shenghu Zhou
In this study, we report a facile
templating method to construct
hollow silica nanotubes. In particular, bis-terpyridine is used to
coordinate metal ions to form polymeric bis-terpyridine–metal
complexes that further self-assemble into tubular organogels in the
presence of cetyltrimethylammonium bromide. The following silica deposition
on organogels and subsequent calcination give metal oxide-doped hollow
silica nanotubes (MxOy-HSNs). Facilitated by the high coordination stability constants
of bis-terpyridine with metal ions, a series of metal ions, such as
Fe, Ni, Cu, and Zn, could be used to form polymeric bis-terpyridine–metal
complexes. The supported Pt/FexOy-HSNs exhibit good catalytic performance for
hydrogenation of a series of substituted nitrobenzenes, showing that
the obtained MxOy-HSNs could be used as catalyst supports due to their good textural
properties.