Yang Ying-Ying, Zhou Wen-Tao, Song Wei-Long, Zhu Qing-Quan, Xiong Hao-Jiang, Zhang Yu, Cheng Sheng, Luo Pai-Feng, Lu Ying-Wei
School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.
Instrumental Analysis Center, Hefei University of Technology, Hefei, 230009, People's Republic of China.
Nanoscale Res Lett. 2021 Apr 12;16(1):60. doi: 10.1186/s11671-021-03510-5.
Both multilayered (ML) and few-layered (FL) TiCT nanosheets have been prepared through a typical etching and delaminating procedure. Various characterizations confirm that the dominant terminal groups on ML-TiCT and FL-TiCT 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-TiCT can present stronger near-field enhancement effect; however, Ag/FL-TiCT hybrid structure can confine stronger near-field due to the electron injection, which can be offered by the terminated hydroxyl groups.
多层（ML）和少层（FL）TiCT纳米片均通过典型的蚀刻和分层工艺制备而成。各种表征证实，ML-TiCT和FL-TiCT上的主要端基不同，分别被归为与O相关的基团和羟基。主要端基的这种差异导致了不同的物理和化学性能，最终使纳米片具有不同的潜在应用。特别是，在与银纳米颗粒耦合之前，ML-TiCT能呈现出更强的近场增强效应；然而，Ag/FL-TiCT杂化结构由于终止羟基提供的电子注入，能够限制更强的近场。
