A highly SERS-active and flexible droplet based on carbon-metal composite nanoparticles

Mao, Haiyang; Li, Ruirui; Huang, Chengjun; Jia, Yuncong; Wang, Weibing; Ming, Anjie; Xiong, Jijun

doi:10.1109/transducers.2017.7994305

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…As depicted in Figure b, the surface roughness of the candle-soot layer was quite high because of the complex, loose geometry of the CNP chains. Because of the low surface tension of carbon materials, the candle-soot layer was superhydrophobic with a contact angle of ∼163° . A substrate with such nanostructures can be used directly for SERS detection after coating with noble-metal nanoparticles .…”

Section: Resultsmentioning

confidence: 99%

“…However, our previous research showed that, when a droplet lands on such a SERS substrate, the impact of the droplet on the substrate may damage the CNP chains. The CNPs detached from the chains were attracted to the droplet and attached around the droplet; as a result, the penetration of the laser into the droplet was partially blocked by the CNPs, which weakened the stimulation of LSPR …”

Section: Resultsmentioning

confidence: 99%

“…Because of the low surface tension of carbon materials, the candle-soot layer was superhydrophobic with a contact angle of ∼163°. 44 A substrate with such nanostructures can be used directly for SERS detection after coating with noble-metal nanoparticles. 45 However, our previous research showed that, when a droplet lands on such a SERS substrate, the impact of the droplet on the substrate may damage the CNP chains.…”

mentioning

confidence: 99%

“…The CNPs detached from the chains were attracted to the droplet and attached around the droplet; as a result, the penetration of the laser into the droplet was partially blocked by the CNPs, which weakened the stimulation of LSPR. 44 Because PC forms compact and inert films, it has been widely used as a coating material. In addition, PC is mechanically robust with a Young's modulus of 3.2 GPa, indicating that it forms stable structures.…”

mentioning

confidence: 99%

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Self-Concentrated Surface-Enhanced Raman Scattering-Active Droplet Sensor with Three-Dimensional Hot Spots for Highly Sensitive Molecular Detection in Complex Liquid Environments

Gui

Mao

et al. 2020

ACS Sens.

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In this work, a surface-enhanced Raman scattering (SERS)-active droplet with three-dimensional (3D) hot spots prepared from a superhydrophobic SERS substrate, which is inspired by the nut wizard strategy, was developed for ultrasensitive detection in complex liquid environments. The SERS substrate was composed of silver-capped parylene C-coated carbon nanoparticles (Ag-PC@CNPs). Such a SERS substrate was prepared by candle-soot deposition to provide a porous carbon nanoparticle layer followed by deposition of a parylene C film to protect the CNPs and then sputtering of silver nanoparticles. Similar to a nut wizard, a droplet

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Self-Concentrated Surface-Enhanced Raman Scattering-Active Droplet Sensor with Three-Dimensional Hot Spots for Highly Sensitive Molecular Detection in Complex Liquid Environments

Gui

Mao

et al. 2020

ACS Sens.

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“…To the soot applications discussed by Uttaravalli et al [17], some other studies on soot as a material for anti-bio-adhesion behavior coatings [18], as super hydrophobic coatings [19], and also some experimental attempts for soot to be used as supercapacitor electrodes [10,20,21] should be added. Functionalized candle soot is used to improve Raman sensing properties for active SERS (surface-enhanced Raman scattering) substrates [22].…”

Section: Introductionmentioning

confidence: 99%

Transforming Chimney Soot via Stochastic Polymerization for Active Electrode Coating

et al. 2023

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A polymerization procedure is presented to increase the molecular weight of hydrocarbons in household chimney soot without thermal treatment at high temperatures. Pristine soot was subject to chlorination, with half of it treated with magnesium (Mg-plates) to create random-type Grignard reagents (R-Mg-Cl) in diethyl ether media. Mixing the Grignard reagent and the rest of the halogenated soot material created new C-C bonds, thus increasing the molecular weight of the final product. The obtained stochastically polymerized soot (SPS) was investigated using Raman spectroscopy, FTIR spectroscopy and XPS and was subjected to electrochemical testing as an assembled supercapacitor with a KOH electrolyte. Results show significant carbon structure differences due to the chemical procedures and newly created functional groups in the soot. Such functional groups could increase the capacity of supercapacitors, creating pseudo-capacitance by participating in redox reactions. The results also unveiled removing any random contaminations in the pristine soot and obtaining a more uniform final product containing hydrocarbons with longer chains, thus increasing the molecular weight.

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A Highly Sensitive SERS Device Based on a PDMS-CVD Prepared Substrate

Mao

Chen

et al. 2018

2018 Ieee Sensors

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A highly SERS-active and flexible droplet based on carbon-metal composite nanoparticles

Cited by 5 publications

References 13 publications

Self-Concentrated Surface-Enhanced Raman Scattering-Active Droplet Sensor with Three-Dimensional Hot Spots for Highly Sensitive Molecular Detection in Complex Liquid Environments

Self-Concentrated Surface-Enhanced Raman Scattering-Active Droplet Sensor with Three-Dimensional Hot Spots for Highly Sensitive Molecular Detection in Complex Liquid Environments

Transforming Chimney Soot via Stochastic Polymerization for Active Electrode Coating

A Highly Sensitive SERS Device Based on a PDMS-CVD Prepared Substrate

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