Synthesis of the hybrid CdS/Au flower-like nanomaterials and their SERS application

Yang, Chengxiang; Qing, Chen; Wang, Qianjin; Zhang, Xuejin; Lou, Jun; Liu, Yingkai

doi:10.1016/j.snb.2019.127218

Cited by 29 publications

(9 citation statements)

References 61 publications

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“…Surface-enhanced Raman scattering (SERS) was accidentally discovered by Fleischmann and co-workers in 1974, which has been rapidly growing over the past 40 years and has now become a valuable technique in the fields of physics, chemistry, medicine, etc. − The main drawback of the application of SERS technology is the use of effective substrates, which not only supply high electromagnetic enhancement but also provide stable, uniform, and reproducible performance. , Several methods have been successfully utilized to improve the performance of SERS substrates. Many of them are made from noble metals with multiple shapes, such as nanorods, nanoparticles (NPs), nanotriangles, nanocubes, and core–shell nanoparticles. , Recently, semiconductor materials have been applied to synthesize semiconductor–noble metal SERS substrates that have attracted tremendous attention due to their low cost, high sensitivity, uniformity, and reproducibility. − …”

Section: Introductionmentioning

confidence: 99%

Recyclable Ag-Deposited TiO₂ SERS Substrate for Ultrasensitive Malachite Green Detection

Yang

Tang

et al. 2021

ACS Omega

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An ultrasensitive Ag-deposited TiO2 flower-like nanomaterial (FLNM) surface-enhanced Raman scattering (SERS)-active substrate is synthesized via a hydrothermal method, and Ag nanoparticles (NPs) are deposited through electron beam evaporation. Malachite green (MG), which is widely used in aquaculture, is employed to assess the surface-enhanced Raman scattering (SERS) properties of TiO2/Ag FLNMs. They exhibit ultrasensitivity (limit of detection (LOD) of MG reaches 4.47 × 10–16 M) and high reproducibility (relative standard deviations (RSDs) are less than 13%); more importantly, the TiO2/Ag FLNMs are recyclable, as enabled by their self-cleaning function due to TiO2 photocatalytic degradation. Their recyclability is achieved after three cycles and their potential application is examined in the actual system. Finite difference time domain (FDTD) simulations and the charge-transfer (CT) mechanism further prove that the excellent SERS properties originate from localized surface plasmon resonance (LSPR) of Ag NPs and the coupling field between Ag and TiO2 FLNMs. Therefore, TiO2/Ag FLNMs show promising application in aquaculture.

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Section: Introductionmentioning

confidence: 99%

Recyclable Ag-Deposited TiO₂ SERS Substrate for Ultrasensitive Malachite Green Detection

Yang

Tang

et al. 2021

ACS Omega

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“…Other peaks at 1364, 1511, and 1651 cm −1 contributed to the aromatic C-C stretched modes [18]. To effectively evaluate the Raman enhancement intensity of the substrate [28], the characteristic peaks 610 cm −1 of the probe molecule R6G were selected to calculate the enhancement factor (EF). The EF at 610 cm −1 was 3.99 × 10 10 .…”

Section: Sers Determination Of R6gmentioning

confidence: 99%

Trace Cd2+ Ions Detection on the Flower-Like Ag@CuO Substrate

Cheng

et al. 2020

Nanomaterials

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CuO flower-like material (FM) was prepared via the facile hydrothermal method, and Ag nanoparticles were deposited on the CuO FM to obtain Ag@CuO composite. Rhodamine 6G (R6G) was used as the probe molecule on Ag@CuO FM substrate to study surface enhanced Raman scattering (SERS). It is discovered that it exhibited an excellent SERS performance with limit of detection of 3.58 × 10−16 M and enhancement factor (EF) of 3.99 × 1010. More importantly, we used it as a SERS substrate to detect cadmium ions and found that its limit of detection (LOD) reaches up to 2.6 × 10−8 M, which is lower than the highest allowable Cd2+ concentration in drinking water set by the World Health Organization (WHO) and Environmental Protection Agency (EPA). Therefore, the proposed composite can be applicable to the detection of Cd2+ in drinking water and in soil.

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“…In the past few decades, hybrid nanomaterials, such as core@shell nanomaterials and nanoparticle (NP)-modified carbon nanomaterials, have been highlighted owing to their synergistic and multifunctional properties, such as surface-enhanced Raman scattering (SERS), magneto-optical effects, plasmon resonance energy transfer, and enhanced localized surface plasmon resonance [ 1 , 2 , 3 ]. These nanomaterials were employed for the development of high-performance biosensing systems [ 4 , 5 , 6 , 7 ]. Among the various types of hybrid nanomaterials, magnetic and metal NP-based hybrid nanomaterials were employed for detecting viruses and deoxyribonucleic acid (DNA) through magnetofluoro-immunosensing (MFI) platforms [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetofluoro-Immunosensing Platform Based on Binary Nanoparticle-Decorated Graphene for Detection of Cancer Cell-Derived Exosomes

Lee

Mondal

et al. 2022

IJMS

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Multi-functionalized carbon nanomaterials have attracted interest owing to their excellent synergic properties, such as plasmon resonance energy transfer and surface-enhanced Raman scattering. Particularly, nanoparticle (NP)-decorated graphene (GRP) has been applied in various fields. In this study, silver NP (AgNP)- and magnetic iron oxide NP (IONP)-decorated GRP were prepared and utilized as biosensing platforms. In this case, AgNPs and GRP exhibit plasmonic properties, whereas IONPs exhibit magnetic properties; therefore, this hybrid nanomaterial could function as a magnetoplasmonic substrate for the magnetofluoro-immunosensing (MFI) system. Conversely, exosomes were recently considered high-potential biomarkers for the diagnosis of diseases. However, exosome diagnostic use requires complex isolation and purification methods. Nevertheless, we successfully detected a prostate-cancer-cell-derived exosome (PC-exosome) from non-purified exosomes in a culture media sample using Ag/IO-GRP and dye-tetraspanin antibodies (Ab). First, the anti-prostate-specific antigen was immobilized on the Ag/IO-GRP and it could isolate the PC-exosome from the sample via an external magnetic force. Dye-tetraspanin Ab was added to the sample to induce the sandwich structure. Based on the number of exosomes, the fluorescence intensity from the dye varied and the system exhibited highly sensitive and selective performance. Consequently, these hybrid materials exhibited excellent potential for biosensing platforms.

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Synthesis of the hybrid CdS/Au flower-like nanomaterials and their SERS application

Cited by 29 publications

References 61 publications

Recyclable Ag-Deposited TiO₂ SERS Substrate for Ultrasensitive Malachite Green Detection

Recyclable Ag-Deposited TiO₂ SERS Substrate for Ultrasensitive Malachite Green Detection

Trace Cd2+ Ions Detection on the Flower-Like Ag@CuO Substrate

Magnetofluoro-Immunosensing Platform Based on Binary Nanoparticle-Decorated Graphene for Detection of Cancer Cell-Derived Exosomes

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Synthesis of the hybrid CdS/Au flower-like nanomaterials and their SERS application

Cited by 29 publications

References 61 publications

Recyclable Ag-Deposited TiO2 SERS Substrate for Ultrasensitive Malachite Green Detection

Recyclable Ag-Deposited TiO2 SERS Substrate for Ultrasensitive Malachite Green Detection

Trace Cd2+ Ions Detection on the Flower-Like Ag@CuO Substrate

Magnetofluoro-Immunosensing Platform Based on Binary Nanoparticle-Decorated Graphene for Detection of Cancer Cell-Derived Exosomes

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Product

Resources

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Recyclable Ag-Deposited TiO₂ SERS Substrate for Ultrasensitive Malachite Green Detection

Recyclable Ag-Deposited TiO₂ SERS Substrate for Ultrasensitive Malachite Green Detection