MoS2-spaced bimetal composite structure as SERS-SPR sensor for glucose detection

Man, Baoyuan; Wang, Guilin; Li, Zhen; Xu, Shicai; Li, Chonghui; Jing, Yu; Zhang, Chao; Zhao, Xiaofei

doi:10.1016/j.jallcom.2022.163789

Cited by 19 publications

(4 citation statements)

References 54 publications

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“…Thus, developing bimetallic AuPd NPs by droplet epitaxy can be a novel route for SERS application. Meanwhile, the chemical mechanism (CM) enhancement has been widely adapted as a SERS mechanism for various configurations of semiconductor micro- and nano-structures [ 22 , 23 , 24 , 25 , 26 ]. The CM is related to the charge transfer from the semiconductor micro- and nano-structure substrates to probe molecules.…”

Section: Introductionmentioning

confidence: 99%

“…The CM is related to the charge transfer from the semiconductor micro- and nano-structure substrates to probe molecules. Up to now, a variety of semiconductor materials, i.e., TiO 2 , CdS, GQD, MoS 2 , ZnO, etc., have been demonstrated as promising SERS substrates with the CM enhancement [ 23 , 24 , 25 , 26 ]. Among them, MoS 2 , a transition metal dichalcogenide (TMD) semiconductor with good chemical stability and activity, has gained extensive research attention in chemical catalysts, energy conversion, biochemical sensing, and SERS [ 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

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MoS2 Nanoplatelets on Hybrid Core-Shell (HyCoS) AuPd NPs for Hybrid SERS Platform for Detection of R6G

et al. 2023

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In this work, a novel hybrid SERS platform incorporating hybrid core-shell (HyCoS) AuPd nanoparticles (NPs) and MoS2 nanoplatelets has been successfully demonstrated for strong surface-enhanced Raman spectroscopy (SERS) enhancement of Rhodamine 6G (R6G). A significantly improved SERS signal of R6G is observed on the hybrid SERS platform by adapting both electromagnetic mechanism (EM) and chemical mechanism (CM) in a single platform. The EM enhancement originates from the unique plasmonic HyCoS AuPd NP template fabricated by the modified droplet epitaxy, which exhibits strong plasmon excitation of hotspots at the nanogaps of metallic NPs and abundant generation of electric fields by localized surface plasmon resonance (LSPR). Superior LSPR results from the coupling of distinctive AuPd core-shell NP and high-density background Au NPs. The CM enhancement is associated with the charge transfer from the MoS2 nanoplatelets to the R6G. The direct contact via mixing approach with optimal mixing ratio can effectively facilitate the charges transfer to the HOMO and LUMO of R6G, leading to the orders of Raman signal amplification. The enhancement factor (EF) for the proposed hybrid platform reaches ~1010 for R6G on the hybrid SERS platform.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

MoS2 Nanoplatelets on Hybrid Core-Shell (HyCoS) AuPd NPs for Hybrid SERS Platform for Detection of R6G

et al. 2023

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“…The basic principle of an SPR sensor is that the SPR spectrum is closely related to the refractive index of the surface of the metal; that is, when the refractive index of the surface of the metal material changes very slightly, the position of the SPR resonance peak also changes accordingly [ 3 , 4 ]. Sensitive detection technology based on this principle is widely used in various fields and has the advantages of working in real time and having high efficiency and sensitivity [ 3 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Simulation of a Ratiometric SPR Sensor Based on a 2D van der Waals Heterojunction for Refractive Index Measurement

Zhou

Zhang

et al. 2023

Nanomaterials

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Surface plasmon resonance (SPR) sensors have been widely applied in many fields because of their advantages of working in real time and high sensitivity. However, because the spectrum of an SPR sensor is easily affected by the smoothness of the metal surface, this type of sensor has obvious disadvantages in the application of quantitative detection. We designed an SPR refractive index sensor for molecular detection that has the advantage of quantifiability. A ratio spectral quantitative analysis method was established based on the two coherent dips of the SPR spectrum formed by the strong coupling effect between the surface plasmon polaritons and the excitons of the J-aggregate molecule 5,6-dichloro-2–[3–[5,6-dichloro-1-ethyl-3–(4-sulfobutyl)–2-benzimidazoline subunit] propenyl]–3-ethyl-1–(4-sulfobutyl) benzimidazole hydroxide inner salt (TDBC). The introduced MoS2/graphene van der Waals heterojunction produced an effective charge transfer to the Ag film, resulting in significant electric field enhancement at the sensing interface and further improving the detection sensitivity of the sensor. The simulation results showed that for 43 nm Ag film, for example, the ratiometric SPR sensor with the Ag film structure can obtain 16.12 RIU-1 sensing sensitivity, applied to the detection of gas molecules, while the SPR sensor with single-layer graphene and three layers of MoS2 heterostructures can obtain 50.68 RIU-1 sensing sensitivity. The addition of van der Waals heterostructures can significantly improve sensing performance by 215%.

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“…In particular, as diabetes is a worldwide public health problem, to the ability to examine the blood glucose level is of great importance. Various approaches to blood glucose testing have been reported including electrochemical methods ( Comba et al, 2018 ; Gopal et al, 2022 ; Thapa and Heo, 2023 ; Wang et al, 2023 ), optical methods ( Ramon-Marquez et al, 2017 ; Kumar and Chauhan, 2022 ; Zhenglan et al, 2022 ), and surface plasmon resonance (SPR) spectroscopy ( Man et al, 2022 ; Zhang et al, 2022 ; Zheng et al, 2022 ). Although widely applied in commercial glucose tests, electrochemical sensors have easily interfered with biological molecules such as ascorbate ( Mani et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Glucose determination in human serum by applying inner filter effect quenching mechanism of upconversion nanoparticles

Chen¹,

Yang²,

Chen³

et al. 2023

Front. Bioeng. Biotechnol.

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Accurate blood glucose determination is essential to the clinical diagnosis and management of diabetes. This work establishes an inner filter effect (IFE) strategy between upconversion nanoparticles (UCNPs) and quinone-imine complex for glucose monitoring in human serum simply and efficiently. In this system, the enzyme glucose oxidase (GOx) catalyzes the reaction of glucose into hydrogen peroxide (H2O2) and gluconic acid when compulsion by oxygen. In the presence of horseradish peroxidase (HRP), the produced H2O2 can catalytically oxidize phenol and 4-amino antipyrine (4-AAP) to generate quinone-imine products. The purple-colored quinone-imine complex effectively absorbed the fluorescence of NaYF4:Yb3+, Er3+ UCNPs, leading to the strong fluorescence quenching of UCNPs through IFE. Thus, a new approach was established for glucose monitoring by determining the fluorescence intensity. Under the optimal condition, this approach shows better linearity to glucose from 2–240 μmol/L with a low detection limit at 1.0 μmol/L. Owing to the excellent fluorescence property and background-free interference of the UCNPs, the biosensor was applied for glucose measurements in human serum and got a satisfactory result. Furthermore, this sensitive and selective biosensor revealed great potential for the quantitative analysis of blood glucose or different kinds of H2O2-involved biomolecules for the application of clinical diagnosis.

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MoS2-spaced bimetal composite structure as SERS-SPR sensor for glucose detection

Cited by 19 publications

References 54 publications

MoS2 Nanoplatelets on Hybrid Core-Shell (HyCoS) AuPd NPs for Hybrid SERS Platform for Detection of R6G

MoS2 Nanoplatelets on Hybrid Core-Shell (HyCoS) AuPd NPs for Hybrid SERS Platform for Detection of R6G

Design and Simulation of a Ratiometric SPR Sensor Based on a 2D van der Waals Heterojunction for Refractive Index Measurement

Glucose determination in human serum by applying inner filter effect quenching mechanism of upconversion nanoparticles

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