Visible light-induced degradation of phenolic compounds by Sudan black dye sensitized TiO₂ nanoparticles as an advanced photocatalytic material

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• 作者：Elnaz Safaralizadeh ; Simin Janitabar Darzi…
• 关键词：Nanostructures ; Semiconductors ; Thermogravimetric analysis ; Powder diffraction
• 刊名：Research on Chemical Intermediates
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：43
• 期：2
• 页码：1197-1209
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Catalysis; Physical Chemistry; Inorganic Chemistry;
• 出版者：Springer Netherlands
• ISSN：1568-5675
• 卷排序：43

文摘

Using a simple impregnation process, the present study has introduced a novel route for the photosensitization of TiO₂ nanoparticles using Sudan black B dye as a sensitizer. DRS, XRD, FE-SEM, BET, UV–Vis, FT-IR and TGA–DSC analyses were considered for characterization of the synthesized purple powder as a visible light photocatalyst for removal of the phenolic pollutant. The band gap of the dye-sensitized TiO₂ and corresponding BET surface area were 2.9 eV and 50.0 m2 g−1, respectively. Based on the results, Sudan Black sensitized TiO₂ photocatalyst outperforms the pure commercial TiO₂ (Degussa P25) in terms of phenol degradation under visible light. Under a 100-min photo-catalytic experiment, dye-sensitized TiO₂ removed 96 % of the phenol content. The Sudan black B dye-sensitized TiO₂ is expected to show further interesting physical characteristics related to potential uses.