Figure 3.

FE-SEM images of the Sb2S3 nanotubes under different annealing temperatures. (a) as-prepared at 90°C for 16 h before annealing; annealed in argon atmosphere at (b) 200°C, (c) 250°C, and (d) 400°C for 1 h, respectively.

Shuai and Shen Nanoscale Research Letters 2012 7:199   doi:10.1186/1556-276X-7-199
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