Coupling Au-loaded magnetic frameworks to photonic crystal for the improvement of photothermal heating effect in SERS

Wang, Tianxing; Xiao, Panpan; Li, Ye; Zhu, Pengcheng; Zhuang, Lin

doi:10.1039/d2ra07262a

Cited by 4 publications

(2 citation statements)

References 48 publications

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“…Therefore, the photonic band gap of the SiO 2 @Au opal structure is at around 667 nm. According to a previous report [30], SERS enhancement is strongly dependent on the spectral alignment between the position of the PBG and the Raman laser. In this study, the wavelength of the Raman laser used was 633 nm, which is basically consistent with the 667 nm photonic band gap of the SiO 2 @Au opal structure.…”

Section: Of 12mentioning

confidence: 79%

Preparation of SiO2@Au Nanoparticle Photonic Crystal Array as Surface-Enhanced Raman Scattering (SERS) Substrate

2023

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Surface-enhanced Raman scattering technology plays a prominent role in spectroscopy. By introducing plasmonic metals and photonic crystals as a substrate, SERS signals can achieve further enhancement. However, the conventional doping preparation methods of these SERS substrates are insufficient in terms of metal-loading capacity and the coupling strength between plasmonic metals and photonic crystals, both of which reduce the SERS activity and reproducibility of SERS substrates. In this work, we report an approach combining spin-coating, surface modification, and in situ reduction methods. Using this approach, a photonic crystal array of SiO2@Au core–shell structure nanoparticles was prepared as a SERS substrate (SiO2@Au NP array). To study the SERS properties of these substrates, Rhodamine 6G was employed as the probe molecule. Compared with a Au-SiO2 NP array prepared using doping methods, the SiO2@Au NP array presented better SERS properties, and it reproduced the SERS spectra after one month. The detection limit of the Rhodamine 6G on SiO2@Au NP array reached 1 × 10−8 mol/L; furthermore, the relative standard deviation (9.82%) of reproducibility and the enhancement factor (1.51 × 106) were evaluated. Our approach provides a new potential option for the preparation of SERS substrates and offers a potential advantage in trace contaminant detection, and nondestructive testing.

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Section: Of 12mentioning

confidence: 79%

Preparation of SiO2@Au Nanoparticle Photonic Crystal Array as Surface-Enhanced Raman Scattering (SERS) Substrate

2023

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“…In this study, Fe 3 O 4 @SiO 2 MNPs with core-shell structures were prepared using an improved version of the classic Stöber method. 41,42 Notably, TEOS was added twice to ensure the homogeneity of the SiO 2 shell. During the coating process, a mixture of 50 mg Fe 3 O 4 MNPs, 6 mL DI water, and 40 mL ethanol was evenly dispersed using ultrasonic oscillation for 10 min.…”

Section: Methodsmentioning

confidence: 99%

High-performance flower-like and biocompatible nickel-coated Fe₃O₄@SiO₂ magnetic nanoparticles decorated on a graphene electrocatalyst for the oxygen evolution reaction

Lin¹,

Li²,

Zhu³

et al. 2023

Nanoscale Adv.

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Microfluidic SERS biosensor based on Au-semicoated photonic crystals for melanoma diagnosis

Wang,

Mao,

Sun

et al. 2025

Biosensors and Bioelectronics

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Coupling Au-loaded magnetic frameworks to photonic crystal for the improvement of photothermal heating effect in SERS

Abstract: The combination of plasmonic metals and photonic crystal (PC) structure is considered to have potential for further enhancement of the surface-enhanced Raman scattering (SERS) effect in comparison with conventional metal SERS substrates.

Cited by 4 publications

References 48 publications

Preparation of SiO2@Au Nanoparticle Photonic Crystal Array as Surface-Enhanced Raman Scattering (SERS) Substrate

Preparation of SiO2@Au Nanoparticle Photonic Crystal Array as Surface-Enhanced Raman Scattering (SERS) Substrate

High-performance flower-like and biocompatible nickel-coated Fe₃O₄@SiO₂ magnetic nanoparticles decorated on a graphene electrocatalyst for the oxygen evolution reaction

Microfluidic SERS biosensor based on Au-semicoated photonic crystals for melanoma diagnosis

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Coupling Au-loaded magnetic frameworks to photonic crystal for the improvement of photothermal heating effect in SERS

Abstract: The combination of plasmonic metals and photonic crystal (PC) structure is considered to have potential for further enhancement of the surface-enhanced Raman scattering (SERS) effect in comparison with conventional metal SERS substrates.

Cited by 4 publications

References 48 publications

Preparation of SiO2@Au Nanoparticle Photonic Crystal Array as Surface-Enhanced Raman Scattering (SERS) Substrate

Preparation of SiO2@Au Nanoparticle Photonic Crystal Array as Surface-Enhanced Raman Scattering (SERS) Substrate

High-performance flower-like and biocompatible nickel-coated Fe3O4@SiO2 magnetic nanoparticles decorated on a graphene electrocatalyst for the oxygen evolution reaction

Microfluidic SERS biosensor based on Au-semicoated photonic crystals for melanoma diagnosis

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Resources

About

High-performance flower-like and biocompatible nickel-coated Fe₃O₄@SiO₂ magnetic nanoparticles decorated on a graphene electrocatalyst for the oxygen evolution reaction