中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
Improved SERS activity of non-stoichiometric copper sulfide nanostructures related to charge-transfer resonance

文献类型：期刊论文

作者Chen, Menglei1,2; Li, Ke3,4; Luo, Yuanyuan3,4; Shi, Jianping2,5; Weng, Chaocang2; Gao, Lei3; Duan, Guotao1
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
出版日期2020-03-07
卷号22
ISSN号1463-9076
DOI10.1039/c9cp05930j
通讯作者Luo, Yuanyuan(yyluo@issp.ac.cn) ; Shi, Jianping(jps51062@ahnu.edu.cn) ; Duan, Guotao(duangt@hust.edu.cn)
英文摘要The low enhancement factor of semiconductor SERS substrates is a major obstacle for their practical application. Therefore, there is a need to explore the facile synthesis of new SERS substrates and reveal the SERS enhancement mechanism. Here, we develop a simple, facile and low-cost two-step method to synthesize copper sulfide based nanostructures with different Cu7.2S4 contents. The as-synthesized sample is composed of nanosheets with the CuS phase structure. With the increase of the annealing temperature to 300 degrees C, the CuS content gradually decreases and disappears, and the content of Cu7.2S4 and CuSO4 appears and gradually increases. At the annealing temperature of 350 degrees C, only CuSO4 exists. Compared with pure CuS or pure CuSO4, the detection limit of R6G molecules is the lowest for the composite sample with a higher content of Cu7.2S4, indicating that the introduction of non-stoichiometric Cu7.2S4 can improve the SERS performance and the higher content of Cu7.2S4 leads to a higher SERS activity. Furthermore, to investigate the SERS mechanism, the energy band structures and energy-level diagrams of different probe molecules over CuS, Cu7.2S4 and CuxS are studied by DFT calculations. Theoretical calculations indicate that the excellent SERS behavior depends on charge transfer resonance. Our work provides a general approach for the construction of excellent metal compound semiconductor SERS active substrates.
WOS关键词ENHANCED RAMAN-SCATTERING ; IN-SITU SYNTHESIS ; CUS ; NANOPARTICLES ; PERFORMANCE ; ELECTRODES ; CONVERSION ; NETWORKS
资助项目National Key R&D Program of China[2016YFC0201103] ; National Natural Science Foundation of China[11674320] ; National Natural Science Foundation of China[61775002] ; Key Research Projects of the Frontier Science CAS[QYZDB-SSW-JSC017] ; Open Fund of State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Chinese Academy of Sciences[KFS-2018] ; Open Fund of State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Chinese Academy of Sciences[KFS-2017] ; Institute of Optics and Electronics, Chinese Academy of Sciences[KFS-2018] ; Institute of Optics and Electronics, Chinese Academy of Sciences[KFS-2017]
WOS研究方向Chemistry ; Physics
语种英语
WOS记录号WOS:000519248900028
出版者ROYAL SOC CHEMISTRY
资助机构National Key R&D Program of China ; National Natural Science Foundation of China ; Key Research Projects of the Frontier Science CAS ; Open Fund of State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Chinese Academy of Sciences ; Institute of Optics and Electronics, Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103561]  
专题中国科学院合肥物质科学研究院
通讯作者Luo, Yuanyuan; Shi, Jianping; Duan, Guotao
作者单位1.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China
2.Anhui Normal Univ, Coll Phys & Elect Technol, Wuhu 241000, Anhui, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Anhui Key lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Peoples R China
5.Anhui Prov Key Lab Photoelect Mat Sci & Technol, Wuhu 241000, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Menglei,Li, Ke,Luo, Yuanyuan,et al. Improved SERS activity of non-stoichiometric copper sulfide nanostructures related to charge-transfer resonance[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2020,22.
APA Chen, Menglei.,Li, Ke.,Luo, Yuanyuan.,Shi, Jianping.,Weng, Chaocang.,...&Duan, Guotao.(2020).Improved SERS activity of non-stoichiometric copper sulfide nanostructures related to charge-transfer resonance.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,22.
MLA Chen, Menglei,et al."Improved SERS activity of non-stoichiometric copper sulfide nanostructures related to charge-transfer resonance".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 22(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。