Rational Design of Zirconium-doped Titania Photocatalysts with Synergistic Brønsted Acidity and Photoactivity

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• 作者：Runyuan Ma ; Dr. Liang Wang ; Dr. Bingsen Zhang ; Xianfeng Yi ; Prof. Anmin Zheng ; Prof. Feng Deng ; Xuhua Yan ; Shuxiang Pan ; Xiao Wei ; Kai-Xue Wang ; Prof. Dang Sheng Su and Prof. Feng-Shou Xiao
• 刊名：ChemSusChem
• 出版年：2016
• 出版时间：October 6, 2016
• 年：2016
• 卷：9
• 期：19
• 页码：2759-2764
• 全文大小：1309K
• ISSN：1864-564X

文摘

The preparation of photocatalysts with high activities under visible-light illumination is challenging. We report the rational design and construction of a zirconium-doped anatase catalyst (S-Zr-TiO₂) with Brønsted acidity and photoactivity as an efficient catalyst for the degradation of phenol under visible light. Electron microscopy images demonstrate that the zirconium sites are uniformly distributed on the sub-10 nm anatase crystals. UV-visible spectrometry indicates that the S-Zr-TiO₂ is a visible-light-responsive catalyst with narrower band gap than conventional anatase. Pyridine-adsorption infrared and acetone-adsorption ¹³C NMR spectra confirm the presence of Brønsted acidic sites on the S-Zr-TiO₂ sample. Interestingly, the S-Zr-TiO₂ catalyst exhibits high catalytic activity in the degradation of phenol under visible-light illumination, owing to a synergistic effect of the Brønsted acidity and photoactivity. Importantly, the S-Zr-TiO₂ shows good recyclability.