Self-assembled C-Ag hybrid nanoparticle on nanoporous GaN enabled ultra-high enhancement factor SERS sensor for sensitive thiram detection

Zhou, Hongpeng; Qiu, Jiaoyan; Zhang, Yunhong; Liang, Yanbo; Han, Lin; Zhang, Yu

doi:10.1016/j.jhazmat.2024.133868

Journal of Hazardous Materials

2024

DOI: 10.1016/j.jhazmat.2024.133868

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Self-assembled C-Ag hybrid nanoparticle on nanoporous GaN enabled ultra-high enhancement factor SERS sensor for sensitive thiram detection

Hongpeng Zhou,

Jiaoyan Qiu,

Yunhong Zhang

et al.

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Cited by 9 publications

References 52 publications

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Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag

Zhao,

Sun,

Gao

et al. 2024

Adv Funct Materials

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Rapid and accurate detection of nitrite in the aqueous environment is extremely important for ecological safety and human health. In this paper, the Raman detection of nitrite by a NiFe2O4@Ag sensor in water is enhanced by an extra magnetic field collaborated with surface plasma. Most importantly, it is demonstrated that the magnetic field enhances the Raman peak intensity through not only the effect of magnetic aggregation but also the magnetic field‐induced dielectric polarization effect. In this way, the NO2− can be detected in a wide linear range from 10−8 to 10−3 mol L−1, and the limit of detection (LOD) can reach as low as 1.25 × 10−9 mol L−1, which is 5.69 times lower than that in the absence of an external magnetic field. Similarly, the sensitivity under the magnetic field is 2.65 times that without the magnetic field. In addition, the sensor also shows superior detection ability to NO2− in real samples. Given the excellent capability of the magnetic field‐enhanced Raman spectra, the reported strategy offers new thoughts on how to enhance the detection ability by an external magnetic field and show the great application potential in real water bodies.

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Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag

Zhao,

Sun,

Gao

et al. 2024

Adv Funct Materials

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Construction of Ag/Au bimetallic alloying nanoparticles on GaN films for high-performance SERS substrate, and modification of defect states

Vu,

Bao,

Phuong

et al. 2024

Appl. Phys. A

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Improved SERS activity of TiN microstructures by surface modification with Au

Michałowska,

Szymańska,

Ambroziak

et al. 2024

J Mater Sci

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Over the years, numerous outstanding research groups around the world have been working tirelessly on metallic SERS substrates. Although these efforts have led to the development of various sensors and pushed the field forward, today this line of research seems saturated and exhausted. In this work, we address this issue by exploring an emerging topic in recent literature: the fabrication of high-performance TiN SERS-active structures. TiN thin film was sputtered onto pyramidal Si microstructures. Spectroscopic ellipsometry measurements confirmed the plasmonic properties of the TiN material above its plasma wavelength of 515 nm. The Si-TiN surface was subsequently modified with an Au layer, which was then transformed into Au nanoparticles (Au NPs) during the Rapid Thermal Annealing process. The Si-TiN-AuNPs samples exhibited the highest extinction intensity, as well as the best SERS signal intensity for the model Raman reporter molecule. Further analysis of the SERS data showed that the presence of the Au thin film only moderately increased SERS activity, while Au NPs enhanced the SERS signal by one order of magnitude. Final Si-TiN-AuNPs platforms were successfully employed for the detection of vitamin B12, demonstrating a low limit of detection (8.57•10–8 M) along with excellent point-to-point repeatability. Graphical abstract

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Self-assembled C-Ag hybrid nanoparticle on nanoporous GaN enabled ultra-high enhancement factor SERS sensor for sensitive thiram detection

Cited by 9 publications

References 52 publications

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag

Construction of Ag/Au bimetallic alloying nanoparticles on GaN films for high-performance SERS substrate, and modification of defect states

Improved SERS activity of TiN microstructures by surface modification with Au

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Self-assembled C-Ag hybrid nanoparticle on nanoporous GaN enabled ultra-high enhancement factor SERS sensor for sensitive thiram detection

Cited by 9 publications

References 52 publications

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe2O4@Ag

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe2O4@Ag

Construction of Ag/Au bimetallic alloying nanoparticles on GaN films for high-performance SERS substrate, and modification of defect states

Improved SERS activity of TiN microstructures by surface modification with Au

Contact Info

Product

Resources

About

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag