“…Because of the lower band gap energy (E g = 2.4-2.8 eV) compared to anatase TiO 2 (3.2 eV), WO 3 absorbs visible light [37,38] and can extend the activity spectral range of the sunlight. The mixed metals oxide W-TiO 2 has already been considered for anti-fogging surfaces, self-cleaning glasses, self-cleaning superhydrophylic surfaces [39], photocatalysis [21,28,29,35,36,38,[40][41][42][43][44][45][46][47][48][49][50][51][52][53][54], charge storage [55], solar energy conversion [44], ethylene sensors [56], air treatment [57], anti-corrosion purposes [58], hydrogen production [19,59,60], smart glass industry [61], wastewater treatment [62], energy storage [63][64][65], humidity sensors [66] and photo-electrochemistry [67]. The applications of W-TiO 2 photocatalysts for pollutant removal in aqueous solutions are summarized in Table 1.…”