Oxygen induced enhancement of NIR emission in brookite TiO2 powders: comparison with rutile and anatase TiO2 powders.

@article{Vequizo2018OxygenIE,
  title={Oxygen induced enhancement of NIR emission in brookite TiO2 powders: comparison with rutile and anatase TiO2 powders.},
  author={Junie Jhon M Vequizo and Sunao Kamimura and Teruhisa Ohno and Akira Yamakata},
  journal={Physical chemistry chemical physics : PCCP},
  year={2018},
  volume={20 5},
  pages={3241-3248}
}
Brookite TiO2 attracts considerable attention in photocatalysis owing to its superior performance in several photocatalytic reactions. In this work, we investigated the behavior of charge carriers in brookite, rutile, and anatase TiO2 by using photoluminescence (PL) and transient absorption (TA) spectroscopies. PL measurements revealed that brookite TiO2 exhibits a visible and a NIR emission at ∼520 nm and ∼860 nm, respectively. Addition of methanol vapor quenched both the visible and NIR… CONTINUE READING
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