Controllable preparation of the Au–MoS<sub>2</sub> nano-array composite: optical properties study and SERS application

Zhai, Yingjiao; Yang, Hui; Li, Jinhua; Shi, Kaixi; Jin, Fangjun

doi:10.1039/d1tc00813g

Cited by 10 publications

(13 citation statements)

References 38 publications

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“…The Raman shift can be attributed to charge redistribution and the local surface plasmon resonance of the high-entropy alloy (HEA) nanoparticles 20–22 (Fig. 1j).…”

Section: Resultsmentioning

confidence: 99%

A resistance-driven H₂ gas sensor: high-entropy alloy nanoparticles decorated 2D MoS₂

Mondal,

Zhang,

Kumar

et al. 2023

Nanoscale

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“…The Raman shift can be attributed to charge redistribution and the local surface plasmon resonance of the high-entropy alloy (HEA) nanoparticles 20–22 (Fig. 1j).…”

Section: Resultsmentioning

confidence: 99%

A resistance-driven H₂ gas sensor: high-entropy alloy nanoparticles decorated 2D MoS₂

Mondal,

Zhang,

Kumar

et al. 2023

Nanoscale

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“…The reaction between the atoms on the substrate surface and the adsorbed molecules or ions is facilitated by irradiating the specimen by the electron beam, and the designed pattern is finally obtained on the substrate by the liftoff technique. Zhai et al [72] applied EBL to fabricate a Au nanoarray on the monolayer MoS 2 film, which was used as a SERS substrate to realize CV detection of 10 −6 -10 −15 M. They considered it to be combined with the separation technology to form a sensor that can quickly detect trace molecules in a natural environment.…”

Section: Nanoetching Methodsmentioning

confidence: 99%

“…The hybrid substrates prepared by this method show stronger SERS activity, whose detection limit can reach as low as 1 fM for CV detection. In addition, the power of the laser also affects the Raman intensity at the same concentration of the analytes [72].…”

Section: Nanoetching Methodsmentioning

confidence: 99%

“…Finally, they successfully achieved a recyclable detection of single and mixed residues of TMTD and MP on eggplant, Chinese cabbage, grape and strawberry by using different monitoring protocols depending on the size and level of surface roughness (Figure 6). Zhai et al [72] prepared Au nanodisk array-monolayer MoS 2 (ADAM) composites material by EBL technique. They experimentally demonstrated the good stability of the composite at different laser frequencies and temperatures.…”

Section: Food Safety Detectionmentioning

confidence: 99%

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MoS2-Based Substrates for Surface-Enhanced Raman Scattering: Fundamentals, Progress and Perspective

Yin

Yan

et al. 2022

Coatings

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Surface-enhanced Raman scattering (SERS), as an important tool for interface research, occupies a place in the field of molecular detection and analysis due to its extremely high detection sensitivity and fingerprint characteristics. Substantial efforts have been put into the improvement of the enhancement factor (EF) by way of modifying SERS substrates. Recently, MoS2 has emerged as one of the most promising substrates for SERS, which is also exploited as a complementary platform on the conventional metal SERS substrates to optimize the properties. In this minireview, the fundamentals of MoS2-related SERS are first explicated. Then, the synthesis, advances and applications of MoS2-based substrates are illustrated with special emphasis on their practical applications in food safety, biomedical sensing and environmental monitoring, together with the corresponding challenges. This review is expected to arouse broad interest in nonplasmonic MoS2-related materials along with their mechanisms, and to promote the development of SERS studies.

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“…In the past, they were frequently used to improve the color of aquatic products. [41,42] With gradual attention to food security, these dye molecules have been rarely used in aquaculture and aquatic product processing nowadays. Because of their distinct Raman spectrum and large cross section, they are often used as standards to test the detection sensitivity of SERS substrates.…”

Section: Trace Detection Of Organic Dyesmentioning

confidence: 99%

Reproducible fabrication of gold nanostar monolayers for surface‐enhanced Raman spectroscopy‐based trace detection

Zhang

Yang

Wang

et al. 2022

J Raman Spectroscopy

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Rapid, simple, and reliable detection of toxics at trace level is of great significance for public health. Surface‐enhanced Raman spectroscopy (SERS) as a powerful vibrational spectroscopic technique for molecules probing provides great advantages in trace detection; however, the low reproducibility of SERS signals from spot to spot and substrate to substrate remains a great challenge restricting its real applications. Here, we report a facile method for reproducibly preparing highly uniform self‐assembled monolayers of gold nanostars (Au NSs SAM) as SERS substrates using the classic Langmuir–Blodgett technique and introduced a statistical method to explore the signal reproducibility by t test. Our results show that the Au NSs SAM substrates fabricated in the same batch and different batches generated constant SERS signals without statistical differences and could detect dye molecules CV, R6G, and RhB in solution at concentrations as low as 10−8, 10−8, and 10−7 M, respectively. We then applied the Au NSs SAM for trace detection of Tetracycline (TC), one of the most widespread antibiotics entering the food chain and threatening the ecological balance. A detection limit of 0.05 μg/ml was achieved, with a linear response between SERS signal and TC concentration in the range of 0.05–10 μg/ml. Overall, this uniform Au NSs SAM could be reproducibly fabricated to provide a reliable platform for trace detection of TC residues or other toxics in water and is expected to have broad applications in different fields including environmental monitoring, food security, and so on.

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Controllable preparation of the Au–MoS₂ nano-array composite: optical properties study and SERS application

Abstract: The controllability of materials is a key factor for improving the performance of SERS substrates, which has attracted widespread attention. Hence, in this study, a kind of controllable materials constructed...

Cited by 10 publications

References 38 publications

A resistance-driven H₂ gas sensor: high-entropy alloy nanoparticles decorated 2D MoS₂

A resistance-driven H₂ gas sensor: high-entropy alloy nanoparticles decorated 2D MoS₂

MoS2-Based Substrates for Surface-Enhanced Raman Scattering: Fundamentals, Progress and Perspective

Reproducible fabrication of gold nanostar monolayers for surface‐enhanced Raman spectroscopy‐based trace detection

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Controllable preparation of the Au–MoS2 nano-array composite: optical properties study and SERS application

Abstract: The controllability of materials is a key factor for improving the performance of SERS substrates, which has attracted widespread attention. Hence, in this study, a kind of controllable materials constructed...

Cited by 10 publications

References 38 publications

A resistance-driven H2 gas sensor: high-entropy alloy nanoparticles decorated 2D MoS2

A resistance-driven H2 gas sensor: high-entropy alloy nanoparticles decorated 2D MoS2

MoS2-Based Substrates for Surface-Enhanced Raman Scattering: Fundamentals, Progress and Perspective

Reproducible fabrication of gold nanostar monolayers for surface‐enhanced Raman spectroscopy‐based trace detection

Contact Info

Product

Resources

About

Controllable preparation of the Au–MoS₂ nano-array composite: optical properties study and SERS application

A resistance-driven H₂ gas sensor: high-entropy alloy nanoparticles decorated 2D MoS₂

A resistance-driven H₂ gas sensor: high-entropy alloy nanoparticles decorated 2D MoS₂