Nanoporous Sn-doped TiO2 (NP-TiO2/Sn) composite is successfully fabricated by etching AlTiSn ternary alloy ribbons in NaOH solution at room temperature. The NP-TiO2/Sn composite exhibits a 3D nanosponge structure accompanied with nanowires on it. Besides, Sn nanoparticles embed into the ligaments of amorphous TiO2.
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