Abstract
A novel kind of nano-sized TiO2 (anatase) was obtained by high-temperature (400–700°C) dehydration of nanotube titanic acid (H2Ti2O4(OH)2, NTA). The high-temperature (400–700°C) dehydrated nanotube titanic acids (HD-NTAs) with a unique defect structure exhibited a p-type semiconductor behavior under visible-light irradiation (\(\uplambda\ge420\) nm, E photon=2.95 eV), whereas exhibited an n-type semiconductor behavior irradiated with UV light (\(\uplambda=365\) nm, E photon=3.40 eV).
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (No. 20071010).
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Li, Q., Wang, X., Jin, Z. et al. n/p-Type changeable semiconductor TiO2 prepared from NTA. J Nanopart Res 9, 951–957 (2007). https://doi.org/10.1007/s11051-006-9095-4
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DOI: https://doi.org/10.1007/s11051-006-9095-4