MoS_(2)core-shell nanoparticles prepared through liquid-phase ablation and light exfoliation of femtosecond laser for chemical sensing

作     者：ZUO Pei JIANG Lan LI Xin TIAN MengYao YUAN YongJiu HAN WeiNa MA Le HU LiFei HE ZhiCong LI Fang 

作者机构：School of Mechanical and Electrical EngineeringHubei Key Laboratory of Optical Information and Pattern RecognitionSchool of Optical Information and Energy EngineeringWuhan Institute of TechnologyWuhan 430073China Laser Micro/Nano Fabrication LaboratorySchool of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation CenterChongqing 401120China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2023年第66卷第3期

页      面：853-862页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52105427,U2037205,52005041,51575053,and 51775047) Research Foundation from Ministry of Education of China(Grant No.6141A02033123) Beijing Municipal Commission of Education(Grant No.KM201910005003) Knowledge Innovation Program of Wuhan-Basic Research(Grant No.2022010801010349) Scientific Research Project of Hubei Provincial Department of Education(Grant No.B2022055) 

主　　题：MoS_(2)core-shell nanoparticle femtosecond laser liquid-phase ablation light exfoliation 3D Au-MoS_(2)composite structure chemical sensing 

摘      要：Molybdenum disulfide(MoS_(2))-based nanostructures are highly desirable for applications such as chemical and biological sensing,photo/electrochemical catalysis,and energy storage due to their unique physical and chemical *** this work,MoS_(2)core-shell nanoparticles were first prepared through the liquid-phase processing of bulk MoS2by a femtosecond *** core of prepared nanoparticles was incompletely and weakly crystalline MoS_(2);the shell of prepared nanoparticles was highly crystalline MoS_(2),which wrapped around the core layer by *** femtosecond laser simultaneously achieved liquid-phase ablation and light *** formation mechanism of the core-shell nanoparticles is to prepare the nanonuclei first by laser liquid-phase ablation and then the nanosheets by light exfoliation;the nanosheets will wrap the nanonuclei layer by layer through van der Waals forces to form core-shell *** MoS_(2)core-shell nanoparticles,because of Mo-S bond breakage and recombination,have high chemical activity for chemical ***,the nanoparticles were used as a reducing agent to directly prepare three-dimensional(3D)Au-MoS_(2)micro/nanostructures,which were applied as surface-enhanced Raman spectroscopy(SERS)substrates to explore chemical sensing *** ultrahigh enhancement factor(1.06×10^(11)),ultralow detection limit(10-13M),and good SERS adaptability demonstrate highly sensitive SERS activity,great ability of ultralow concentration detection,and ability to detect diverse analytes,*** work reveals the tremendous potential of 3D Au-MoS_(2)composite structures as excellent SERS substrates for chemical and biological sensing.