Cu–Co-codoped titanate/TiO 2 nanocomposite thin films for enhanced visible light absorption

Micro & nano letters

article

Yongliang An¹  Dongjun Wang²  Dongsong Yin¹  Liang Song¹  Yongsheng Chen¹  Kunkun Gao¹ 

[1] School of Materials Science and Engineering, Heilongjiang University of Science and Technology;School of Materials Science and Engineering, Harbin Institute of Technology

关键词: energy gap;    nanocomposites;    semiconductor growth;    copper;    infrared spectra;    scanning electron microscopy;    nanofabrication;    cobalt;    nanotubes;    annealing;    titanium compounds;    ultraviolet spectra;    visible spectra;    transmission electron microscopy;    X-ray diffraction;    semiconductor doping;    transmission electron microscopy;    ultraviolet–visible absorption spectra;    alkaline hydrothermal method;    TNT films;    ion exchange method;    as-prepared nanocomposite films;    titanate nanosheets;    nanocomposite thin films;    titanate nanotube thin films;    XRD;    anatase particles;    energy band gap;    time 3.0 d;    temperature 500.0 degC;    time 120.0 min;   

DOI  :  10.1049/mnl.2019.0037

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Titanate nanotube thin (TNT) films were synthesised by alkaline hydrothermal method using titanium (Ti) plates as precursors. Copper–cobalt (Cu–Co)-codoped titanate/Ti dioxide (TiO 2 ) nanocomposite thin films were prepared by doping Cu and Co to TNT films through ion exchange method and annealed at 500°C for 120 min. The as-prepared nanocomposite films were characterised by scanning electron microscopy, transmission electron microscopy, X-ray diffractometer, and ultraviolet–visible absorption spectra. The results show that anatase TiO 2 particles were grown on the surface of titanate nanomaterial films. The composite materials mainly consisted of anatase TiO 2 particles and titanate nanotubes/nanosheets. Cu–Co-codoped titanate/TiO 2 nanocomposite thin films exhibited superior visible height adsorption property due to the reduced energy bandgap of composites introduced by additional Cu and Co 3d orbitals.

【 授权许可】

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