Enhanced Peroxidase-like Activity of CuS Hollow Nanocages by Plasmon-Induced Hot Carriers and Photothermal Effect for the DualMode Detection of Tannic Acid

作者全名："Wu, Shiyue; Zhang, Pu; Jiang, Zhongwei; Zhang, Wendong; Gong, Xue; Wang, Yi"

作者地址："[Wu, Shiyue; Jiang, Zhongwei; Zhang, Wendong; Gong, Xue; Wang, Yi] Chongqing Normal Univ, Coll Chem, Engn Res Ctr Biotechnol Act Subst, Chongqing Key Lab Green Synth & Applicat,Minist Ed, Chongqing 401331, Peoples R China; [Zhang, Pu] Chongqing Med Univ, Coll Pharm, Chongqing Res Ctr Pharmaceut Engn, Chongqing 400016, Peoples R China"

通信作者："Jiang, ZW; Wang, Y (通讯作者)，Chongqing Normal Univ, Coll Chem, Engn Res Ctr Biotechnol Act Subst, Chongqing Key Lab Green Synth & Applicat,Minist Ed, Chongqing 401331, Peoples R China."

来源：ACS APPLIED MATERIALS & INTERFACES

ESI学科分类：MATERIALS SCIENCE

WOS号：WOS:000852700900001

JCR分区：Q1

影响因子：9.5

年份：2022

卷号：14

期号：35

开始页：40191

结束页：40199

文献类型：Article

关键词：copper sulfide; nanocages; plasmonic nanozymes; photothermal effect; dual-mode sensing

摘要："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."

基金机构：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]

基金资助正文："This work was supported by the National Natural Science Foundation of China (no. 21775014) , the Scientific and Technological Innovation Project for Construction of Double City Economic Circle in Chengdu -Chongqing Region (no. KJCXZD2020024) , the Chongqing Innovation Research Group Project (no. CXQT21015) , the Startup Fund of Chongqing Normal University (no. 22XLB004) , and the Chongqing Postgraduate Research and Innovation Project (no. CYS21275) ."