Rationally Designed Graphene/Bilayer Silver/Cu Hybrid Structure with Improved Sensitivity and Stability for Highly Efficient SERS Sensing Article Swipe
Maofeng Zhang
,
Zhiyuan Zheng
,
Honghui Liu
,
Dapeng Wang
,
Tun Chen
,
Jiaqin Liu
,
Yucheng Wu
·
YOU?
·
· 2018
· Open Access
·
· DOI: https://doi.org/10.1021/acsomega.8b00565
YOU?
·
· 2018
· Open Access
·
· DOI: https://doi.org/10.1021/acsomega.8b00565
A simple and cost-effective strategy was rationally designed to fabricate a special sandwich structure consisting of graphene, bilayer silver, and a copper plate, which was used as a surface-enhanced Raman scattering (SERS) substrate for highly efficient SERS sensing and detection of trace molecules. Silver dendrite (AgD) nanostructures were subsequently grown on a silver nanosphere (AgNS)/Cu surface to form a bilayer silver/Cu structure, which showed a 1.5-fold Raman enhancement compared to that of the AgNS/Cu substrate. After depositing graphene on the bilayer silver/Cu substrate to obtain a sandwich structure, a higher SERS enhancement and better durability were enabled. The SERS performances, measured by a portable Raman instrument, showed that the optimized sandwich structure substrate exhibited high SERS sensitivity to crystal violet (CV) and rhodamine 6G (R6G) with low limit of detection of 10-9 and 10-8 M, respectively. Such a sandwich-structured substrate exhibited good reproducibility across the entire detection areas with an average relative standard deviation less than 5.9%, which permits its reliable quantitative detection of CV and R6G molecules. In addition, graphene both effectively improved the SERS performances and protected Ag nanocrystals from oxidation, which endowed the sandwich structure a long-term stability with deviation of characteristic peaks' intensity lower than 3.6% after 25 days. This study indicates that the graphene/bilayer silver/Cu sandwich structure as a SERS substrate has a great potential in detecting environmental pollutants.
Related Topics
Concepts
Materials science
Rhodamine 6G
Raman spectroscopy
Graphene
Substrate (aquarium)
Bilayer
Raman scattering
Detection limit
Silver nanoparticle
Nanotechnology
Analytical Chemistry (journal)
Molecule
Nanoparticle
Chemistry
Optics
Chromatography
Membrane
Organic chemistry
Biochemistry
Oceanography
Physics
Geology
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1021/acsomega.8b00565
- OA Status
- gold
- Cited By
- 13
- References
- 47
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W2807038516
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W2807038516Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1021/acsomega.8b00565Digital Object Identifier
- Title
-
Rationally Designed Graphene/Bilayer Silver/Cu Hybrid Structure with Improved Sensitivity and Stability for Highly Efficient SERS SensingWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2018Year of publication
- Publication date
-
2018-05-29Full publication date if available
- Authors
-
Maofeng Zhang, Zhiyuan Zheng, Honghui Liu, Dapeng Wang, Tun Chen, Jiaqin Liu, Yucheng WuList of authors in order
- Landing page
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https://doi.org/10.1021/acsomega.8b00565Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1021/acsomega.8b00565Direct OA link when available
- Concepts
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Materials science, Rhodamine 6G, Raman spectroscopy, Graphene, Substrate (aquarium), Bilayer, Raman scattering, Detection limit, Silver nanoparticle, Nanotechnology, Analytical Chemistry (journal), Molecule, Nanoparticle, Chemistry, Optics, Chromatography, Membrane, Organic chemistry, Biochemistry, Oceanography, Physics, GeologyTop concepts (fields/topics) attached by OpenAlex
- Cited by
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13Total citation count in OpenAlex
- Citations by year (recent)
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2025: 2, 2024: 1, 2022: 3, 2021: 2, 2020: 1Per-year citation counts (last 5 years)
- References (count)
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47Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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