Efficient Visible Light Photocatalytic CO2 Reforming of CH4

详细信息    查看全文

• 作者：Bing Han ; Wei Wei ; Liang Chang ; Peifu Cheng ; Yun Hang Hu
• 刊名：ACS Catalysis
• 出版年：2016
• 出版时间：February 5, 2016
• 年：2016
• 卷：6
• 期：2
• 页码：494-497
• 全文大小：249K
• ISSN：2155-5435

文摘

The large energy requirement of CO₂ reforming of methane (CRM) has obstructed its application. Solar energy is a solution for the issue. Different from efficient photocatalytic splitting of water, photocatalysis for CRM exhibits a very low efficiency and employs only ultraviolet (UV) light. This letter reports an efficient visible-light photocatalytic CRM by combining Pt/black TiO₂ catalyst with light-diffuse-reflection-surface. Under visible light illumination by filtering UV light from AM 1.5G sunlight, H₂ and CO yields reached 71 and 158 mmol/h/g_cat, with a quantum efficiency of 32.3% at 550 °C, and 129 and 370 mmol/h/g_cat, with a quantum efficiency of 57.8% at 650 °C. Those yields are 3 orders of magnitude larger than the reported values.