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Band gap (2) |
Diffuse reflectance spectroscopy (2) |
Nanotubes (2) |
Nitrogen doping (2) |
Thermal annealing (2) |
Titania (2) |
X-ray photoelectron spectroscopy (2) |
Band gap (2) |
Diffuse reflectance spectroscopy (2) |
Nanotubes (2) |
Nitrogen doping (2) |
Thermal annealing (2) |
Titania (2) |
X-ray photoelectron spectroscopy (2) |