Fe2O3 nanomaterials derived from Prussian blue with excellent H2S sensing properties
作者： Yicheng Guo , Xianqing Tian , Xinfeng Wang , Jie Sun
DOI: 10.1016/J.SNB.2019.04.027
关键词: Selectivity 、 Nanomaterials 、 Metal 、 Morphology control 、 Nanotechnology 、 Calcination 、 Oxide 、 Metal-organic framework 、 Prussian blue 、 Materials science
摘要: Abstract Increasing demands for detection of toxic gases have attracted more and attention to design fabricate gas sensors with properties ppb-level detectable, good selectivity, long-term stability. In this paper, Prussian blue (PB) was utilized as precursor preparation Fe2O3. The morphology PB well tuned by different surfactants synthesis temperatures, following calcination at 550 °C transformed them into Fe2O3 without changing the primary morphologies. sensing these as-prepared materials were systematically tested. At optimum operation temperature (200 °C), based on nanocubes, nanospheres, nanoflowers can detect H2S low cross-sensitivity excellent Experimental results reveal that nanospheres sensor best performance, which follows order >nanocubes >nanoflowers. demonstrate it is effective improve metal oxide through control organic frameworks (MOFs)-templated route.
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