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Uniform single-crystalline SnS nanobelts have been prepared via a simple wet-chemical route, in which SnCl 2 was used as tin source and Na 2 S as sulfur source. Direct conversion of these SnS nanobelts with two pyramidal tips to porous-walled SnO 2 nanocapsules was achieved by oxidizing in atmospheric ambient at 500–700°C. The formation mechanism of these porous nanocapsules...
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