Abstract
A Ti3(AlxCu1–x)C2 phase with Cu atoms with a degree of ordering in the A plane is synthesized through the A site replacement reaction in CuCl2 molten salt. The weakly bonded single-atom-thick Cu layers in a Ti3(AlxCu1–x)C2 MAX phase provide actives sites for catalysis chemistry. As-synthesized Ti3(AlxCu1–x)C2 presents unusual peroxidase-like catalytic activity similar to that of natural enzymes. A fabricated Ti3(AlxCu1–x)C2/chitosan/glassy carbon electrode biosensor prototype also exhibits a low detection limit in the electrochemical sensing of H2O2. These results have broad implications for property tailoring in a nanolaminated MAX phase by replacing the A site with late transition elements.
Original language | English |
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Pages (from-to) | 9198−9205 |
Number of pages | 7 |
Journal | ACS Nano |
Issue number | 13 |
DOIs | |
Publication status | Published - 2019 |
Externally published | Yes |
Keywords
- nanolaminate
- MAX phase
- copper
- catalysis
- replacement reaction