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Highly homogeneous ...
Highly homogeneous bimetallic core-shell Au@Ag nanoparticles with embedded internal standard fabrication using a microreactor for reliable quantitative SERS detection
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- Li, Suyang (författare)
- College of Metrology and Measurement Engineering, China Jiliang University, 310018 Hangzhou China
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- Chen, Junjie (författare)
- College of Optical and Electronic Technology, China Jiliang University, 310018 Hangzhou China
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- Xu, Wanbing (författare)
- College of Metrology and Measurement Engineering, China Jiliang University, 310018 Hangzhou China
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- Sun, Biao (författare)
- School of Electrical and Information Engineering, Tianjin University, 300072 Tianjin China
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- Wu, Jiechen (författare)
- KTH,Hållbar utveckling, miljövetenskap och teknik
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- Chen, Qiang (författare)
- College of Optical and Electronic Technology, China Jiliang University, 310018 Hangzhou China
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- Liang, Pei (författare)
- College of Metrology and Measurement Engineering, China Jiliang University, 310018 Hangzhou China
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Materials Chemistry Frontiers. - : Royal Society of Chemistry (RSC). - 2052-1537. ; 7:6, s. 1100-1109
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Bimetallic gold core-silver shell (Au@Ag) surface-enhanced Raman scattering tags draw broad interest in the fields of biological and environmental analyses. Herein, an efficient hybrid microfluidic chip was designed to prepare uniform Au@Ag core-shell nanoparticles, and DTNB was used as the internal standard tag molecule to prepare Au@DTNB@Ag for SERS detection. Homogeneous core-shell nanoparticles with a particle size of 90 nm were prepared by mixing a silver precursor and a gold core in a microfluidic chip. The relative standard deviation (RSD) of the particle size distribution was close to 10%, and the detection limit of 4-MBA was as low as 10-10 M. In order to solve the influence of SERS signal fluctuation, a uniform Au@DTNB@Ag core-molecule-shell structure was synthesized in a microfluidic chip, and the characteristic peak of the analyte was corrected by the relative intensity of the DTNB characteristic peak (1335 cm−1). The experimental results showed that the SERS detection was achieved with high reproducibility, and the SERS peak intensity had a good linear correlation with the concentration. The homogeneous SERS substrate prepared using a microfluidic chip has potential for sensitive and reliable detection of environmental chemical contaminants.
Ämnesord
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
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