Joule: Photocatalytic Hydrogenation of Carbon Dioxide with High Selectivity to Methanol at Atmospheric Pressure

Title：

Photocatalytic Hydrogenation of Carbon Dioxide with High Selectivity to Methanol at Atmospheric Pressure

Authors：

Lu Wang,^1,2Mireille Ghoussoub,²Hong Wang,²Yue Shao,²Wei Sun,²Athanasios A. Tountas,²Thomas E. Wood,²Hai Li,¹Joel Yi Yang Loh,³Yuchan Dong,²Meikun Xia,²Young Li,²Shenghua Wang,¹Jia Jia,²Chenyue Qiu,²Chenxi Qian,²Nazir P. Kherani,³Le He,*¹Xiaohong Zhang,*¹and Geoffrey A. Ozin*²

Institutions：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren’ai Road, Suzhou, Jiangsu 215123, People’s Republic of China

²Materials Chemistry and Nanochemistry Research Group, Solar Fuels Cluster, Departments of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada

³Department of Materials Science and Engineering, University of Toronto, 184 College Street, Suite 140, Toronto, ON M5S 3E4, Canada

Abstract：

The production of solar methanol, directly from gaseous CO₂and H₂, is important for the development of a sustainable energy economy. Despite growing activity in the field, very few photocatalysts exist that can efficiently and stably hydrogenate gaseous CO₂to methanol at ambient pressure with high selectivity. Here, we report that a defect-laden indium oxide, In₂O_3-x(OH)_y, with a rod-like nanocrystal superstructure, can photocatalyze the hydrogenation of CO₂to methanol with 50% selectivity under simulated solar irradiation. Notably, the solar methanol production of the In₂O_3-x(OH)_ynanocrystal superstructures can be stabilized at a rate of 0.06 mmol g_cat^-1h^-1at atmospheric pressure. This is 120 times higher than that of the best-known photocatalysts. This discovery bodes well for the development of a low-pressure solar methanol process using CO₂and renewable H₂feedstocks.

IF：

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Link：

https://www.sciencedirect.com/science/article/pii/S2542435118300965