“…Tin dioxide (SnO 2 ), an n-type semiconductor with a band gap of 3.6 eV at 300 K, has been widely utilized in many fields such as dye-sensitized solar cells [10], gas sensors for detecting leakage [1][2][3][4]9], transparent conducting electrodes [11], catalyst supports and electrochemical modifiers on electrodes, etc [12][13][14][15]. Recently, one-dimensional (1D) nanostructures such as nanobelts, nanofibers and nanowires have attracted much attention because of their high ratio of specific surface area and electronic structural changes due to quantum confinement.…”