Biomorphic tubular nickel oxide structures: Effect of the synthesis parameters on their structural and functional properties, surface-related applications
作者： Mirela Airimioaei , Vlad A Lukacs , Isabelle Lisiecki , Patricia Beaunier , Juliette Blanchard
DOI: 10.1016/J.JALLCOM.2019.152543
关键词: Oxide 、 Nanoparticle 、 Non-blocking I/O 、 Mesoporous material 、 Nickel oxide 、 Materials science 、 Fiber 、 Chemical engineering 、 Population 、 Specific surface area
摘要: Abstract A cheap, reproducible and facile method for synthesis of 1D high specific surface area biomorphic NiO crystalline microstructures by using natural fibers (cotton, hemp flax) as templates, is reported. The effect temperature fiber type on the structural functional properties oxide in comparison with one produced without template presented. comparative (HR)TEM study performed ultrasonicated samples evidenced that, irrespective kind fibers, fractions tubular morphologies, mesoporous walls fine nanoparticles populations are found. Such morphologies never obtained absence biotemplates were induced carbonization thermal decomposition organic constituents. remarkable increase (between 20 50 times higher) than template-free (0.64 m2g-1) was reached when templates at 600 °C/2 h. Due to peculiar generated nanoporosity ultrafine particle population, gas sensing tests demonstrated a higher sensitivity employed. magnetic structures depend their nanoscale arrangement magnetization values confirmed Ni/NiO ratio determined analysis.
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