Study of thermoelectric enhanced SERS and photocatalysis with ZnO-metal nanorod arrays  

作　　者：Baoqiang Du Jibing Tan Chang Ji Mingrui Shao Xiaofei Zhao Jing Yu Chao Zhang Chuansong Chen Hui Pan Baoyuan Man Zhen Li 

机构地区：[1]School of Physics and Electronics,Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250014,China [2]Institute of Applied Physics and Materials Engineering,University of Macao,Macao 999078,China

出　　处：《Nano Research》2023年第4期5427-5435,共9页纳米研究（英文版）

基　　金：the financial support from the National Natural Science Foundation of China(Nos.11974222,12004226,12174229,and 11904214);the Natural Science Foundation of Shandong Province(No.ZR2020QA075);the Qingchuang Science and Technology Plan of Shandong Province(No.2021KJ006);the China Postdoctoral Science Foundation(No.2019M662423).

摘　　要：Herein,a thermoelectric induced surface-enhanced Raman scattering(SERS)substrate consisting of ZnO nanorod arrays and metal nanoparticles is proposed.The intensities of SERS signals are further enhanced by an order of magnitude and the limit of detection(LOD)for the molecules is reduced by at least one order of magnitude after the application of a thermoelectric potential.The enhancement mechanism is analyzed carefully and thoroughly based on the experimental and theoretical results,thus proving that the thermoelectric-induced enhancement of the SERS signals should be classified as a chemical contribution.Furthermore,it is proved that the electric regulation mechanism is universally applicable,and the fabricated substrate realizes enormous enhancements for various types of molecules,such as rhodamine 6G,methyl orange,crystal violet,amaranth,and biological molecules.Additionally,the proposed electric-induced SERS(E-SERS)substrate is also realized to monitor and manipulate the plasmon-activated redox reactions.We believe that this study can promote the course of the research on ESERS and plasmon-enhanced photocatalysts.

关 键 词：ZNO electric-induced surface-enhanced Raman scattering(E-SERS) temperature gradient PHOTOCATALYSIS local surface plasmon resonance(LSPR) 

分 类 号：O65[理学—分析化学]