Using cetyltrimethylammonium bromide (CTAB) as the surfactant from the precursors of SnCl·2HO, the flower-shaped nano composite of tin oxide (SnO) is prepared by the simple eco-friendly hydrothermal method. We can see that the as-prepared SnO sample has a rutile phase crystal structure with regular-shaped nanosheets, and the nanosheets were cross-assembled to form nanoflowers. The band gap of the as-prepared SnO sample is 2.
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