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The C QDs modified granular SnO2 nanotubes are prepared via a simple technical route through which SnO2 nanotubes are dispersed in C QDs solution, then dried at 80°C. The results of X-ray photoelectron spectroscopy, Fourier-transform infra-red spectroscopy, transmission electron microscopy indicated that SnO2 nanotubes are well combined with C QDs through surface carbon–oxygen groups. By degradation...
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