Investigate on plasma catalytic reaction of 4-nitrobenzenethiol on Ag@SiO2Core-Shell substrate via Surface-enhanced Raman scattering

Qi, Xingnan; Wei, Yanqiu; Jiang, Chenxiao; Zhang, Lisheng; Wang, Peijie; Fang, Yan

doi:10.1016/j.saa.2020.118362

Cited by 9 publications

(5 citation statements)

References 31 publications

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“…Figure S10 shows that the SERS intensity of PA‐Ag@SiO 2 is somewhat weaker when the SiO 2 shell thickness is approximately 0.5 nm. It has been demonstrated in the literature that SiO 2 can, in some cases, prevent metal nanoparticles from aggregating 34 . Because of their own agglomeration effect, the ultra‐thin SiO 2 shell layer Ag@SiO 2 nanoparticles exhibit uneven “hotspots” resulting in poor SERS performance, even after assembling on the PA film surface.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO₂ Raman substrate

Wu,

Zhang,

Zhang

et al. 2024

Surface & Interface Analysis

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At present, Ag nanoparticles have been widely used as Raman substrates, but their easy oxidation and aggregation have limited practical applications. In order to address the above problems, firstly, tetraethyl orthosilicate as a precursor was applied to synthesis silver coated with silica dioxide nanoparticles (Ag@SiO2). As a result, the surface of Ag nanoparticles is uniformly coated with a thin layer of SiO2 in order to solve the easy oxidation problem without adversely affecting their surface‐enhanced Raman scattering (SERS) performance. Furthermore, Ag@SiO2 nanoparticles were electrostatically deposited onto polyamide (PA) films to form a two‐dimensional PA‐Ag@SiO2 film substrate, thus resolving nanoparticle agglomeration issues and further improving the repeatability of the entire system. As can been from the SERS detection results obtained from the probe molecules and pollutants, the Raman signal on the PA‐Ag@SiO2 thin film substrate has a good degree of sensitivity, stability, and repeatability.

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Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO₂ Raman substrate

Wu,

Zhang,

Zhang

et al. 2024

Surface & Interface Analysis

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“…At this point, the composition of core–shell nanoparticles has been investigated thoroughly. Qi et al synthesized silica‐coated silver nanoparticles to investigate the SERS performance and then applied them to plasma‐driven catalytic reactions 9 . Zhou et al developed well‐dispersed Ag@C functional nanocomposites and successfully reduced the environmental pollutant 4‐nitrophenol in water while simultaneously enhancing the Raman signal of surrounding molecules 10 …”

Section: Introductionmentioning

confidence: 99%

“…Qi et al synthesized silica-coated silver nanoparticles to investigate the SERS performance and then applied them to plasma-driven catalytic reactions. 9 Zhou et al developed welldispersed Ag@C functional nanocomposites and successfully reduced the environmental pollutant 4-nitrophenol in water while simultaneously enhancing the Raman signal of surrounding molecules. 10 In addition to particle composition, the structure of the SERS substrate plays a significant role in influencing the Raman effect.…”

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confidence: 99%

Facile synthesis of two‐dimensional PA‐Ag@C film for highly sensitive SERS detection

Xin

Zhang

et al. 2022

Surface & Interface Analysis

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In this study, the surface of polyamide (PA) films are electrostatically deposited with the carbon-coated silver (Ag@C) nanoparticles, resulting in a two-dimensional (2D) PA-Ag@C film substrate. The TEM images demonstrate that the nanoparticles were successful synthesized. By adjusting the pH of the system, the core-shell structure and the 2D SERS substrate work together to improve the sensitivity, stability, and repeatability of the substrate to be used in complex real-world water samples.The SERS enhancement effect and substrate uniformity were determined using rhodamine 6G (R6G), crystal violet (CV), and malachite green (MG). The results indicate that the 2D PA-Ag@C film substrate in this study has the optimal Raman effect at a system pH of 6. Under ideal pH conditions, the R6G detection limit (LOD) is as low as 10 À10 M (D2 attenuation), and the Raman signal intensity deviation of the same substrate is maintained within 9.49%. Overall, the Raman signal of probe molecule on the fabricated PA-Ag@C film possesses excellent sensitivity, repeatability, and stability.

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“…As an important tool to study plasma driven photocatalytic reactions, SERS can not only detect the chemical information of probe molecules, but also provide suitable catalytic substrates for surface catalytic reactions [16][17][18][19]. Wu et al [15] reported that PATP adsorbed on the surface of metal nanoparticles can be catalyzed to form 4,4 -dimercaptoazobenzene (DMAB) by LSPR [20].…”

Section: Introductionmentioning

confidence: 99%

Plasma-Driven Photocatalysis Based on Gold Nanoporous Arrays

Zhang

Wang

et al. 2021

Nanomaterials

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Various effects caused by surface plasmons including enhanced electromagnetic field, local heating, and excited electrons/holes can not only redistribute the electromagnetic field in the time domain and space but also redistribute the excited carriers and drive chemical reactions. In this study, firstly, an Au nanoporous array photocatalyst with the arrayed gauge was prepared by means of the anodic alumina template. Then, the formation of 4,4′-dimercaptoazobenzene (DMAB) by the surface plasmon-driven photocatalysis under 633 nm laser irradiation was investigated by means of Raman spectroscopy using aminothiophenol (PATP) as a probe molecule on gold nananoporous arrays. In addition, sodium borohydride was introduced in situ to realize the reverse photocatalytic reaction driven by the surface plasma. With the help of FDTD software, the plasma distribution characteristics on the surface of Au nanoporous arrays were simulated and analyzed. Through this practical method, it is expected to draw specific graphics, letters, and Chinese characters on the micro/nano scale, and realize the functions of graphics drawing, information encryption, reading, and erasing on the micro/nano scale.

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Investigate on plasma catalytic reaction of 4-nitrobenzenethiol on Ag@SiO2Core-Shell substrate via Surface-enhanced Raman scattering

Cited by 9 publications

References 31 publications

Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO₂ Raman substrate

Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO₂ Raman substrate

Facile synthesis of two‐dimensional PA‐Ag@C film for highly sensitive SERS detection

Plasma-Driven Photocatalysis Based on Gold Nanoporous Arrays

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Investigate on plasma catalytic reaction of 4-nitrobenzenethiol on Ag@SiO2Core-Shell substrate via Surface-enhanced Raman scattering

Cited by 9 publications

References 31 publications

Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO2 Raman substrate

Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO2 Raman substrate

Facile synthesis of two‐dimensional PA‐Ag@C film for highly sensitive SERS detection

Plasma-Driven Photocatalysis Based on Gold Nanoporous Arrays

Contact Info

Product

Resources

About

Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO₂ Raman substrate

Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO₂ Raman substrate