Inducing Catalytic Activity in the Dark of TiO2/WO3Mixed Metal Oxides by Using anIn SituPolymerized Semiconductive Polymeric Binder

Jaritkaun, Nuttaporn; Wootthikanokkhan, Jatuphorn; Piewnuan, Chanakarn; Ngaotrakanwiwat, Pailin; Chiarakorn, Siriluk

doi:10.1080/15533174.2015.1137049

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…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.…”

Section: Introductionmentioning

confidence: 99%

Mixed Metal Oxide W-TiO2 Nanopowder for Environmental Process: Synergy of Adsorption and Photocatalysis

Cheng,

Heng,

Tieng

et al. 2024

Nanomaterials

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A mixed metal oxide W-TiO2 nanopowder photocatalyst was prepared by using the sol–gel method with a broad range of elemental compositions x = CW/(CW + CTi), including TiO2 and WO3. The material was structurally characterized and evaluated in adsorption and photocatalytic processes by testing its removal capacity of a representative pollutant methylene blue (MB) in aqueous solutions and under UV-A and sunlight illuminations. The nanopowders appeared to be more effective adsorbents than pure TiO2 and WO3 materials, showing a maximum at 15 mol% W, which was set as the tungsten solubility limit in anatase titania. At the same time, the photocatalytic decomposition of MB peaked at 2 mol% W. The examination of different compositions showed that the most effective MB removal took place at 15 mol% W, which was attributed to the combined action of adsorption and heterogeneous photocatalysis. Moreover, MB decomposition under sunlight was stronger than under UV-A, suggesting photocatalyst activation by visible light. The pollutant removal efficiency of the material with 15 mol% W was enhanced by a factor of ~10 compared to pure TiO2 at the beginning of the process, which shows its high potential for use in depollution processes in emergency cases of a great pollutant leak. As a result, a Wx=0.15-TiO2 catalyst could be of high interest for wastewater purification in industrial plants.

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