Efficient Visible Light Photocatalytic CO<sub>2</sub> Reforming of CH<sub>4</sub>
Bing Han (38992)Wei Wei (21173)Liang Chang (531083)Peifu Cheng (1392244)Yun Hang Hu (1392241)
Abstract
The\nlarge energy requirement of CO<sub>2</sub> reforming of methane\n(CRM) has obstructed its application. Solar energy is a solution for\nthe issue. Different from efficient photocatalytic splitting of water,\nphotocatalysis for CRM exhibits a very low efficiency and employs\nonly ultraviolet (UV) light. This letter reports an efficient visible-light\nphotocatalytic CRM by combining Pt/black TiO<sub>2</sub> catalyst\nwith light-diffuse-reflection-surface. Under visible light illumination\nby filtering UV light from AM 1.5G sunlight, H<sub>2</sub> and CO\nyields reached 71 and 158 mmol/h/g<sub>cat</sub>, with a quantum efficiency\nof 32.3% at 550 °C, and 129 and 370 mmol/h/g<sub>cat</sub>, with\na quantum efficiency of 57.8% at 650 °C. Those yields are 3 orders\nof magnitude larger than the reported values.
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