Anion-Doped TiO2 Nanocatalysts for Water Purification under Visible Light

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• 作者：Vlassis Likodimos ; Changseok Han ; Miguel Pelaez ; Athanassios G. Kontos ; Guanglong Liu ; Duanwei Zhu ; Shuijiao Liao ; Armah A. de la Cruz ; Kevin O鈥橲hea ; Patrick S. M. Dunlop ; J. Anthony Byrne ; Dionysios D. Dionysiou ; Polycarpos Falaras
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：October 2, 2013
• 年：2013
• 卷：52
• 期：39
• 页码：13957-13964
• 全文大小：487K
• 年卷期：v.52,no.39(October 2, 2013)
• ISSN：1520-5045

文摘

Innovative sol鈥揼el synthesis based on the self-assembling template method has been applied to synthesize mesoporous anion-doped TiO₂ with N鈥揊, S and C atoms using suitable surfactants and reagents, to improve simultaneously the structural, morphological, and electronic properties of TiO₂ nanomaterials and achieve anion doping of titania with high visible light photoinduced reactivity. The incorporation of anion species in the titania structure resulted in the effective extension of TiO₂ optical absorption in the visible range through the formation of intragap energy states. The anion-doped titania materials immobilized in the form of nanostructured thin films on glass substrates exhibited high photocatalytic efficiency for the degradation of the microcystin-LR (MC-LR) cyanotoxin, a hazardous water pollutant of emerging concern, under visible light irradiation. The development of these visible light-activated nanocatalysts has the potential of providing environmentally benign routes for water treatment.