MXenes公司
拉曼散射
双功能
材料科学
催化作用
表面等离子共振
检出限
纳米技术
等离子体子
拉曼光谱
纳米颗粒
银纳米粒子
化学工程
化学
光电子学
光学
有机化学
色谱法
物理
工程类
作者
Minghui Yang,Yuanyuan Pan,Chang Ji,Mingrui Shao,Zhen Li,Jing Yu,Chonghui Li,Baoyuan Man,Chao Zhang,Xiaofei Zhao
标识
DOI:10.1021/acs.jpclett.3c02379
摘要
MXenes are attractive candidates in the fields of surface-enhanced Raman scattering (SERS) and catalysis. However, most of the current studies on MXenes are based on blocks and nanosheets, limiting their SERS and catalytic properties. Herein, we have prepared 3D MXene hollow spheres wrapped with silver nanoparticles (Ti3C2-AgNP HSs) using a sacrificial template method, which exhibits excellent sensitivity with a low detection limit due to good light-trapping capability of the hollow sphere and strong localized surface plasmon resonance (LSPR) effect of AgNPs. Furthermore, it shows outstanding photocatalytic performance and realizes in situ SERS monitoring of the 4-nitrobenzenethiol (4-NTP) to 4-aminothiophenol (4-ATP) catalysis reaction. The finite-difference time-domain (FDTD) simulations confirm that 3D Ti3C2-AgNP hollow structures have stronger hot spots than 3D solid structures and higher SERS sensitivity for molecule detection. Therefore, it promises to be an excellent bifunctional material for highly sensitive SERS detection and the in situ monitoring of catalytic reactions.
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