Citation:
Honggen Peng, Yue Peng, Xianglan Xu, Xiuzhong Fang, Yue Liu, Jianxin Cai, Xiang Wang. SnO2 nano-sheet as an efficient catalyst for CO oxidation[J]. Chinese Journal of Catalysis,
;2015, 36(11): 2004-2010.
doi:
10.1016/S1872-2067(15)60926-3
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Polycrystalline SnO2 fine powder consisting of nano-particles (SnO2-NP), SnO2 nano-sheets (SnO2-NS), and SnO2 containing both nano-rods and nano-particles (SnO2-NR+NP) were prepared and used for CO oxidation. SnO2-NS possesses a mesoporous structure and has a higher surface area, larger pore volume, and more active species than SnO2-NP, and shows improved activity. In contrast, although SnO2-NR+NP has only a slightly higher surface area and pore volume, and slightly more active surface oxygen species than SnO2-NP, it has more exposed active (110) facets, which is the reason for its improved oxidation activity. Water vapor has only a reversible and weak influence on SnO2-NS, therefore it is a potential catalyst for emission control processes.
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Keywords:
- SnO2 catalyst,
- Nano-sheet,
- Nano-rod,
- Exposed active facet,
- CO oxidation
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