期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 35, 页码 40191-40199出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c08698
关键词
copper sulfide; nanocages; plasmonic nanozymes; photothermal effect; dual-mode sensing
资金
- National Natural Science Foundation of China [21775014]
- Scientific and Technological Innovation Project for Construction of Double City Economic Circle in Chengdu -Chongqing Region [KJCXZD2020024]
- Chongqing Innovation Research Group Project [CXQT21015]
- Startup Fund of Chongqing Normal University [22XLB004]
- Chongqing Postgraduate Research and Innovation Project [CYS21275]
The study successfully modulated the catalytic activity of nanozymes by combining the peroxidase (POD)-like activity and plasmon properties of CuS hollow nanocages. The CuS HNCs were found to have abundant hot spots, generating strong localized surface plasmon resonance (LSPR) effect, leading to a significant enhancement of POD-like activity.
High catalytic activity is one of the necessary parameters for nanozymes to substitute for natural enzymes. It remains a great challenge to improve the specific enzyme-like activity of nanozymes as much as possible using the characteristics of nanomaterials for avoiding complexity and introducing additional uncertainties. Here, by combining the peroxidase (POD)-like activity and plasmon properties of CuS hollow nanocages (CuS HNCs), we demonstrate the feasibility of modulating the catalytic activity of nanozymes by the localized surface plasmon resonance (LSPR) effect. Rough surfaces and hollow-cage structures endow CuS HNCs with abundant hot spots to produce strong LSPR in the near-infrared (NIR) region, which makes the CuS HNCs simultaneously generate plentiful high-energy hot carriers and thermal effect to mediate H2O2 cleavage to yield the reactive oxide species (ROS) as well as speed up the reaction, leading to a dramatically enhanced POD-like activity. Based on the light-enhanced catalytic activity and high photothermal efficiency of the reaction system, a dual-mode strategy for detecting tannic acid (TA) is developed and successfully applied to determine the content of TA in different kinds of teas. This work not only provides a novel path for tuning the specific enzyme-like activity of nanomaterials but also shows a perspective for dual-mode sensing based on a photoinduced plasmon-enhanced effect.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据