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author:

Wang, Qian (Wang, Qian.) [1] | Chen, Mingming (Chen, Mingming.) [2] | Zhang, Jiaxin (Zhang, Jiaxin.) [3] | Yu, Ting (Yu, Ting.) [4] | Fu, FengFu (Fu, FengFu.) [5] (Scholars:付凤富) | Dong, Yongqiang (Dong, Yongqiang.) [6] (Scholars:董永强)

Indexed by:

EI Scopus SCIE

Abstract:

Carbon based dots capped tin oxide nanosheets (SnO2/CDs) were synthesized by liquid exfoliation of tin oxide (SnO2) nanoparticles in the presence of single-layer carbon based (CDs). The obtained SnO2/CDs have lateral sizes of about 20e50 nm and heights of about 3-4 nm. A thin layer of CDs of about 1-2 nm in thickness are presence on the surface of the SnO2 nanosheets. The SnO2/CDs present excellent surface enhanced Raman spectroscopy (SERS) activity due to the chemical enhancement (CM) led by the charge transfer between SnO2/CDs and the target molecules. The enhancement factor (EF) of the SnO2/CDs is 1.42 x 10(5), taking rhodamine 6G as a model target molecule. The SnO2/CDs are further hybridized with silver nanoparticles (AgNPs) using an in situ synthesis method. The obtained homogeneous nano-hybrids (SnO2/CDs@AgNPs) have a lot of nanogaps. The nanogaps among the AgNPs/CDs create strong electromagnetic enhancement (EM) due to the "hot spots" effect. The nanogaps among the SnO2/CDs and AgNPs/CDs allow the target molecules to be embedded, and thus gained both the CM effect of SnO2/CDs and the EM effect of AgNPs/CDs. As a result, the as-prepared SnO2/CDs@AgNPs exhibits excellent SERS activities, with an ultrahigh enhancement factor of 3.27 x 10(11). (C) 2020 Elsevier Ltd. All rights reserved.

Keyword:

Carbon based dots Chemical enhancement Electromagnetic enhancement Silver nanoparticles Surface enhanced Raman spectroscopy Tin oxide

Community:

  • [ 1 ] [Wang, Qian]Fuzhou Univ, Coll Chem, MOE Key Lab Analyt Sci Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou, Peoples R China
  • [ 2 ] [Chen, Mingming]Fuzhou Univ, Coll Chem, MOE Key Lab Analyt Sci Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou, Peoples R China
  • [ 3 ] [Zhang, Jiaxin]Fuzhou Univ, Coll Chem, MOE Key Lab Analyt Sci Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou, Peoples R China
  • [ 4 ] [Fu, FengFu]Fuzhou Univ, Coll Chem, MOE Key Lab Analyt Sci Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou, Peoples R China
  • [ 5 ] [Dong, Yongqiang]Fuzhou Univ, Coll Chem, MOE Key Lab Analyt Sci Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou, Peoples R China
  • [ 6 ] [Wang, Qian]Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore
  • [ 7 ] [Yu, Ting]Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore

Reprint 's Address:

  • 付凤富 董永强

    [Fu, FengFu]Fuzhou Univ, Coll Chem, MOE Key Lab Analyt Sci Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou, Peoples R China;;[Dong, Yongqiang]Fuzhou Univ, Coll Chem, MOE Key Lab Analyt Sci Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Sa, Fuzhou, Peoples R China;;[Yu, Ting]Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore

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Source :

CARBON

ISSN: 0008-6223

Year: 2020

Volume: 170

Page: 270-276

9 . 5 9 4

JCR@2020

1 0 . 5 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:160

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 12

SCOPUS Cited Count: 11

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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