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

doi:10.1021/acsnano.9b03530

Single-Atom-Thick Active Layers Realized in Nanolaminated Ti₃(Al_xCu_{1- x})C₂ and Its Artificial Enzyme Behavior

ACS Nano. 2019 Aug 27;13(8):9198-9205. doi: 10.1021/acsnano.9b03530. Epub 2019 Jul 24.

Authors

Youbing Li^{1

2}, Mian Li¹, Jun Lu³, Baokai Ma^{1

4}, Zhipan Wang⁴, Ling-Zhi Cheong⁴, Kan Luo¹, Xianhu Zha¹, Ke Chen¹, Per O Å Persson³, Lars Hultman³, Per Eklund³, Cai Shen¹, Qigang Wang⁵, Jianming Xue⁶, Shiyu Du¹, Zhengren Huang¹, Zhifang Chai¹, Qing Huang¹

Affiliations

¹ Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering , Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China.
² University of Chinese Academy of Sciences , 19 A Yuquan Road , Shijingshan District, Beijing 100049 , China.
³ Department of Physics, Chemistry, and Biology (IFM) , Linköping University , 58183 Linköping , Sweden.
⁴ College of Food and Pharmaceutical Sciences , Ningbo University , Ningbo 315211 , China.
⁵ Shool of Chemical Science and Engineering , Tongji University , Shanghai 200092 , China.
⁶ State Key Laboratory of Nuclear Physics and Technology, School of Physics , Peking University , Beijing 100871 , China.

PMID: 31330102
DOI: 10.1021/acsnano.9b03530

Abstract

A Ti₃(Al_xCu_1-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(Al_xCu_1-x)C₂ MAX phase provide actives sites for catalysis chemistry. As-synthesized Ti₃(Al_xCu_1-x)C₂ presents unusual peroxidase-like catalytic activity similar to that of natural enzymes. A fabricated Ti₃(Al_xCu_1-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.

Keywords: MAX phase; catalysis; copper; nanolaminate; replacement reaction.

Publication types

Research Support, Non-U.S. Gov't