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Cu-based high-entropy two-dimensional oxide as stable and active photothermal catalyst.
- Source :
- Nature Communications; 6/1/2023, Vol. 14 Issue 1, p1-10, 10p
- Publication Year :
- 2023
-
Abstract
- Cu-based nanocatalysts are the cornerstone of various industrial catalytic processes. Synergistically strengthening the catalytic stability and activity of Cu-based nanocatalysts is an ongoing challenge. Herein, the high-entropy principle is applied to modify the structure of Cu-based nanocatalysts, and a PVP templated method is invented for generally synthesizing six-eleven dissimilar elements as high-entropy two-dimensional (2D) materials. Taking 2D Cu<subscript>2</subscript>Zn<subscript>1</subscript>Al<subscript>0.5</subscript>Ce<subscript>5</subscript>Zr<subscript>0.5</subscript>O<subscript>x</subscript> as an example, the high-entropy structure not only enhances the sintering resistance from 400 °C to 800 °C but also improves its CO<subscript>2</subscript> hydrogenation activity to a pure CO production rate of 417.2 mmol g<superscript>−1</superscript> h<superscript>−1</superscript> at 500 °C, 4 times higher than that of reported advanced catalysts. When 2D Cu<subscript>2</subscript>Zn<subscript>1</subscript>Al<subscript>0.5</subscript>Ce<subscript>5</subscript>Zr<subscript>0.5</subscript>O<subscript>x</subscript> are applied to the photothermal CO<subscript>2</subscript> hydrogenation, it exhibits a record photochemical energy conversion efficiency of 36.2%, with a CO generation rate of 248.5 mmol g<superscript>−1</superscript> h<superscript>−1</superscript> and 571 L of CO yield under ambient sunlight irradiation. The high-entropy 2D materials provide a new route to simultaneously achieve catalytic stability and activity, greatly expanding the application boundaries of photothermal catalysis. Synergistically enhancing catalytic stability and activity of Cu-based nanocatalysts is an ongoing challenge. Here the authors report Cu-based high-entropy two-dimensional oxide as stable and active catalyst for photothermal CO2 hydrogenation under ambient sunlight irradiation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 14
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Nature Communications
- Publication Type :
- Academic Journal
- Accession number :
- 164046745
- Full Text :
- https://doi.org/10.1038/s41467-023-38889-5