Single-Atom-Thick Active Layers Realized in Nanolaminated Ti3(AlxCu1-x)C2 and Its Artificial Enzyme Behavior

Youbing Li, Mian Li, Jun Lu, Baokai Ma, Zhipan Wang, Ling Zhi Cheong, Kan Luo, Xianhu Zha, Ke Chen, Per O.Å. Persson, Lars Hultman, Per Eklund, Cai Shen, Qigang Wang, Jianming Xue, Shiyu Du, Zhengren Huang, Zhifang Chai, Qing Huang

Research output: Journal PublicationArticlepeer-review

34 Citations (Scopus)

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 languageEnglish
Pages (from-to)9198-9205
Number of pages8
JournalACS Nano
Volume13
Issue number8
DOIs
Publication statusPublished - 27 Aug 2019
Externally publishedYes

Keywords

  • catalysis
  • copper
  • MAX phase
  • nanolaminate
  • replacement reaction

ASJC Scopus subject areas

  • Materials Science (all)
  • Engineering (all)
  • Physics and Astronomy (all)

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