Terminal Groups-Dependent Near-Field Enhancement Effect of Ti3C2Tx Nanosheets

Nanoscale Research Letters

Sheng Cheng¹  Ying-Ying Yang²  Pai-Feng Luo²  Hao-Jiang Xiong²  Yu Zhang²  Wen-Tao Zhou²  Wei-Long Song²  Qing-Quan Zhu²  Ying-Wei Lu³ 

[1] Instrumental Analysis Center, Hefei University of Technology, 230009, Hefei, People’s Republic of China;School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People’s Republic of China;School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People’s Republic of China;Engineering Research Center of High Performance Copper Alloy Materials and Processing, Ministry of Education, Hefei University of Technology, 230009, Hefei, People’s Republic of China;

关键词: Multilayered TiCT;    Few-layered TiCT;    Terminal group;    Near-field enhancement;    Coupling;   

DOI  :  10.1186/s11671-021-03510-5

来源: Springer

【 摘 要 】

Both multilayered (ML) and few-layered (FL) Ti3C2Tx nanosheets have been prepared through a typical etching and delaminating procedure. Various characterizations confirm that the dominant terminal groups on ML-Ti3C2Tx and FL-Ti3C2Tx are different, which have been assigned to O-related and hydroxyl groups, respectively. Such deviation of the dominant terminals results in the different physical and chemical performance and eventually makes the nanosheets have different potential applications. In particular, before coupling to Ag nanoparticles, ML-Ti3C2Tx can present stronger near-field enhancement effect; however, Ag/FL-Ti3C2Tx hybrid structure can confine stronger near-field due to the electron injection, which can be offered by the terminated hydroxyl groups.

【 授权许可】

CC BY