Few-layer MoS2-encapsulated Cu nanoparticle hybrids fabricated by two-step annealing process for surface enhanced Raman scattering

Here we designed a new kind of SERS substrate referred to as a MoS2-coated Cu nanopaticles (MoS2@CuNPs) substrate for R6G detection. The Cu nanoparticles wrapped by a thin MoS2 film were directly synthesized on flat quartz by two annealing process in a mixture of argon and hydrogen. Signals from a M...

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Published inSensors and actuators. B, Chemical Vol. 230; pp. 645 - 652
Main Authors Li, Zhen, Jiang, Shouzhen, Xu, Shicai, Zhang, Chao, Qiu, Hengwei, Li, Chonghui, Sheng, Yingqiang, Huo, Yanyan, Yang, Cheng, Man, Baoyuan
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2016
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Abstract Here we designed a new kind of SERS substrate referred to as a MoS2-coated Cu nanopaticles (MoS2@CuNPs) substrate for R6G detection. The Cu nanoparticles wrapped by a thin MoS2 film were directly synthesized on flat quartz by two annealing process in a mixture of argon and hydrogen. Signals from a MoS2@CuNPs SERS substrate were also demonstrated to have interesting advantages over pure CuNPs SERS, in terms of the excellent linear relationship between Raman intensity and analyte concentration, strongly background fluorescence quenching and being more stable against photo-induced damage and oxidation. The minimum detectable concentrations of R6G on MoS2@CuNPs hybrids can be as low as 10−9M which is one order lower than that on the pure CuNPs substrates. This synthetic approach is facile, scalable and applicable to the MoS2 film compound with other metals such as Ag, Au etc.
AbstractList Here we designed a new kind of SERS substrate referred to as a MoS2-coated Cu nanopaticles (MoS2uNPs) substrate for R6G detection. The Cu nanoparticles wrapped by a thin MoS2 film were directly synthesized on flat quartz by two annealing process in a mixture of argon and hydrogen. Signals from a MoS2uNPs SERS substrate were also demonstrated to have interesting advantages over pure CuNPs SERS, in terms of the excellent linear relationship between Raman intensity and analyte concentration, strongly background fluorescence quenching and being more stable against photo-induced damage and oxidation. The minimum detectable concentrations of R6G on MoS2uNPs hybrids can be as low as 10-9 M which is one order lower than that on the pure CuNPs substrates. This synthetic approach is facile, scalable and applicable to the MoS2 film compound with other metals such as Ag, Au etc.
Here we designed a new kind of SERS substrate referred to as a MoS2-coated Cu nanopaticles (MoS2@CuNPs) substrate for R6G detection. The Cu nanoparticles wrapped by a thin MoS2 film were directly synthesized on flat quartz by two annealing process in a mixture of argon and hydrogen. Signals from a MoS2@CuNPs SERS substrate were also demonstrated to have interesting advantages over pure CuNPs SERS, in terms of the excellent linear relationship between Raman intensity and analyte concentration, strongly background fluorescence quenching and being more stable against photo-induced damage and oxidation. The minimum detectable concentrations of R6G on MoS2@CuNPs hybrids can be as low as 10−9M which is one order lower than that on the pure CuNPs substrates. This synthetic approach is facile, scalable and applicable to the MoS2 film compound with other metals such as Ag, Au etc.
Author Qiu, Hengwei
Yang, Cheng
Li, Zhen
Huo, Yanyan
Xu, Shicai
Zhang, Chao
Jiang, Shouzhen
Li, Chonghui
Sheng, Yingqiang
Man, Baoyuan
Author_xml – sequence: 1
  givenname: Zhen
  surname: Li
  fullname: Li, Zhen
  organization: College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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  givenname: Shouzhen
  surname: Jiang
  fullname: Jiang, Shouzhen
  organization: College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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  givenname: Shicai
  surname: Xu
  fullname: Xu, Shicai
  organization: College of Physics and Electronic Information, Shandong Provincial Key Laboratory of Functional Macromolecular Biophysics, Dezhou University, Dezhou 253023, China
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  surname: Zhang
  fullname: Zhang, Chao
  organization: College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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  fullname: Qiu, Hengwei
  organization: College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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  organization: College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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  givenname: Yingqiang
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  organization: College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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  surname: Yang
  fullname: Yang, Cheng
  organization: College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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  givenname: Baoyuan
  surname: Man
  fullname: Man, Baoyuan
  email: byman@sdnu.edu.cn
  organization: College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
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Keywords R6G
MoS2
SERS
Cu nanoparticle
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Snippet Here we designed a new kind of SERS substrate referred to as a MoS2-coated Cu nanopaticles (MoS2@CuNPs) substrate for R6G detection. The Cu nanoparticles...
Here we designed a new kind of SERS substrate referred to as a MoS2-coated Cu nanopaticles (MoS2uNPs) substrate for R6G detection. The Cu nanoparticles wrapped...
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SubjectTerms Annealing
ANNEALING PROCESSES
Cu nanoparticle
FABRICATION
Fluorescence
Hydrogen
MICROSTRUCTURES
Molybdenum disulfide
MoS2
Nanostructure
PARTICLES
QUENCHING MECHANISMS
R6G
Raman scattering
SCATTERING
SERS
Silver
Substrates
Title Few-layer MoS2-encapsulated Cu nanoparticle hybrids fabricated by two-step annealing process for surface enhanced Raman scattering
URI https://dx.doi.org/10.1016/j.snb.2016.02.120
https://www.proquest.com/docview/1808108225
Volume 230
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