Modification of Pd and Mn on the Surface of TiO2 with Enhanced Photocatalytic Activity for Photoreduction of CO2 into CH4

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• 作者：Chi Cao ; Yabin Yan ; Yanlong Yu ; Xiaodan Yang ; Weisheng Liu ; Yaan Cao
• 刊名：Journal of Physical Chemistry C
• 出版年：2017
• 出版时间：January 12, 2017
• 年：2017
• 卷：121
• 期：1
• 页码：270-277
• 全文大小：552K
• ISSN：1932-7455

文摘

The novel Pd- and Mn-comodified TiO<sub>2sub> photocatalyst (TiO<sub>2sub>–Pd–Mn) was prepared via a simple sol–gel method. The introduced Pd and Mn existed as the −O–Pd–O– and −O–Mn–O– species on the surface of the photocatalyst. The band structure and density of states are studied by theoretical calculations, which is demonstrated by the experimental results. The modification with Pd and Mn ions results in the strong visible response and efficient separation of photogenerated carriers. Thus, the TiO<sub>2sub>–Pd–Mn exhibit improved photocatalytic activity compared with pure TiO<sub>2sub>, TiO<sub>2sub>–Pd, and TiO<sub>2sub>–Mn for photoreduction of CO<sub>2sub> and H<sub>2sub>O into CH<sub>4sub>. It is an effective method on developing the highly active TiO<sub>2sub>-based materials by modification with double elements on the surface.