In situ detection of trace pollutants: a cost-effective SERS substrate of blackberry-like silver/graphene oxide nanoparticle cluster based on quick self-assembly technology

Yu, Jing; Wei, Yisheng; Wang, Huijie; Zhang, Chao; Wei, Yunjia; Wang, Minghui; Man, Baoyuan; Lei, Fengcai

doi:10.1364/oe.27.009879

Cited by 26 publications

(12 citation statements)

References 42 publications

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“…[ 86,87 ] In the past few years, enormous efforts have been done to assemble graphene with metal nanoparticles as SERS substrates for various applications. [ 18,21,88–94 ] Depositing nanostructured noble metal particles on the surface of flexible graphene is the common method to fabricate graphene‐based flexible SERS substrates. [ 21,95–97 ] In addition, in situ reduction of the noble metal ion with a high state is also adopted by researchers in recent years.…”

Section: Fabrication Of Flexible Sers Substratementioning

confidence: 99%

Flexible Surface‐Enhanced Raman Scattering Substrates: A Review on Constructions, Applications, and Challenges

Liu

Cao

2021

Adv Materials Inter

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Flexible surface‐enhanced Raman scattering (SERS) substrates have recently attracted growing research interests in real‐world applications due to their unique advantage of sensitivity and flexibility. Reviewing the latest progress of flexible SERS substrates is very important for further development of high‐quality detection platforms. Herein, the recent developments of flexible SERS substrates in fabrications and applications are introduced. First, three categories of current flexible SERS platforms including paper‐based SERS substrates, polymer‐based SERS substrates, and inorganic materials‐based SERS substrates are demonstrated in depth. Then, the focus is moved to the applications of flexible SERS substrates. Combining swab strategies, lateral flow strips, paper‐based microfluidics, and in situ detection techniques, flexible SERS platforms provide intriguing applications in various fields. The challenges are also identified for practical applications on account of substrates’ uniformity, quantitative accuracy, multiplex detection ability, and overall cost. It is believed this review will be of help for researchers to design and fabricate flexible SERS substrates with higher performance and lower cost, and finally realize the practical applications.

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Section: Fabrication Of Flexible Sers Substratementioning

confidence: 99%

Flexible Surface‐Enhanced Raman Scattering Substrates: A Review on Constructions, Applications, and Challenges

Liu

Cao

2021

Adv Materials Inter

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“…[ 7 ] In recent year, for the purpose of pursuing excellent SERS performance, much effort has been devoted to develop novel SERS substrates to promote the EM and CM effect. [ 8–14 ]…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of noble metal decorated carbon nanostructure for SERS detection

Lai

Chen³

et al. 2021

J Raman Spectroscopy

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Surface enhanced Raman scattering (SERS) is a highly sensitive spectral analysis technique for ultra‐low trace molecule detection. Conventionally, noble metals like silver (Ag) and gold (Au) are used to prepare the SERS substrates; however, it usually requires careful experiment design and accurate process control, which defers their wide applications in practice. In this paper, a one‐step and low‐cost approach to prepare silver decorated porous carbon (Ag NPs/PCN) films for SERS application is reported. Experimentally, gelatin‐silver nitrate mixed solution was first spin‐coated on the Si substrates to form the thin films, and then, the substrates were carbonized at the different temperatures to obtain the Ag NPs/PCN films. The SERS performance of the Ag NPs/PCN films was evaluated by using the R6G as Raman reporter. Results reveal that the SERS activity is closely related to the spin‐coating rate and carbonization temperature. And detection limit of 10−8 M with the Raman enhancement factor of 1.64 × 106 (10−4‐M R6G) can be obtained on the most optimal substrate. Moreover, large‐scale mapping measurement further evidences that excellent Raman signal uniformity with the RSD of 6.93% also can be achieved.

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“…In recent times, LSPR has been instrumental for numerous sensing applications relating to photochemistry [14], electrochemistry [15,16], material discernment and identification [2,17,18], concentration sensing [19,20], acidity sensing [21], trace element detection [22], and intercellular processes [23][24][25]. Broadly, these applications use two methods to obtain the LSPR.…”

Section: Introductionmentioning

confidence: 99%

Photothermal Effect in Plasmonic Nanotip for LSPR Sensing

Nisar

Kang

Zhao

2020

Sensors

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The influence of heat generation on the conventional process of LSPR based sensing has not been explored thus far. Therefore, a need exists to draw attention toward the heat generation issue during LSPR sensing as it may affect the refractive index of the analyte, leading to incorrect sensory conclusions. This manuscript addresses the connection between the photo-thermal effect and LSPR. We numerically analyzed the heat performance of a gold cladded nanotip. The numerical results predict a change in the micro-scale temperature in the microenvironment near the nanotip. These numerical results predict a temperature increase of more than 20 K near the apex of the nanotip, which depends on numerous factors including the input optical power and the diameter of the fiber. We analytically show that this change in the temperature influences a change in the refractive index of the microenvironment in the vicinity of the nanotip. In accordance with our numerical and analytical findings, we experimentally show an LSPR shift induced by a change in the input power of the source. We believe that our work will bring the importance of temperature dependence in nanotip based LSPR sensing to the fore.

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In situ detection of trace pollutants: a cost-effective SERS substrate of blackberry-like silver/graphene oxide nanoparticle cluster based on quick self-assembly technology

Cited by 26 publications

References 42 publications

Flexible Surface‐Enhanced Raman Scattering Substrates: A Review on Constructions, Applications, and Challenges

Flexible Surface‐Enhanced Raman Scattering Substrates: A Review on Constructions, Applications, and Challenges

Facile synthesis of noble metal decorated carbon nanostructure for SERS detection

Photothermal Effect in Plasmonic Nanotip for LSPR Sensing

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