Photocatalysis 12 Photocatalytic activities Photocatalytic activity 6 Titanium dioxide 6 X ray diffraction 6 Chromium compounds 4 Coatings 4 Heterogeneous photocatalysis 4 Hydrothermal synthesis 4 Photodegradation 4 Powders 4 Scanning electron microscopy 4 TiO 4 1 dimensional titanium oxide nanostructure 2 1-D nanostructures 2 1-d TiO 2 1D TiO<inf>2</inf> nanostructures 2 Acetaldehyde 2 Adhesion properties 2 Adsorption 2 Adsorption of organic molecules 2 Allophane 2 Aluminosilicates 2 Ammonium fluoride 2 Anatase TiO 2 Anodic oxidation 2 Aqueous system 2 Article 2 BET surface area measurement 2 Bi 2 WO 6 2