Structure, spectral and photocatalytic properties of self - doped TiO2-x Thin Films
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Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, P. R. China
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Abstract:
Tailored production of titanium dioxide thin films (TTFs) are widely used in green energy field due to their outstanding advantages. In this work, the TTFs wereSprepared by the electron beam evaporation system and annealed in air and H2 respectively. With excellent stability, samples annealed in H2 maintain their pale yellow in the air for nearly a year. The structure, morphology, spectral and photocatalytic properties of TTFs have been observed and discussed detailedly. Titanium oxide films annealed in H2 have better catalytic performance than those annealed in air. The results show that Ti3+ can improve photocatalytic efficiency since the electronic structures of TTFs annealed in H2 can be finely tuned by the doped Ti3+. The existence of a Ti3+ induced an electronic band below the conduction band and narrows the band gap.
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[Yaxue Jin, Bin Wang, Hongji Qi, Maodong Zhu. Structure, spectral and photocatalytic properties of self - doped TiO2-x Thin Films[J]. Rare Metal Materials and Engineering,2019,48(12):3841~3845.] DOI:[doi]