Facile preparation of Cu2-xS supernanoparticles with an unambiguous SERS enhancement mechanism

Zhang, Jun; Xing, Tingyang; Zhang, Min; Zhou, Yunlong

doi:10.1016/j.cej.2021.134457

Cited by 26 publications

(15 citation statements)

References 52 publications

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“…SERS has been developed as an advanced nondestructive analytical technique and is widely used in the fields of reaction mechanism monitoring, biomolecular recognition, and trace substance detection. − However, one of the major challenges limiting the widespread use of SERS technique is the lack of effective SERS substrates. Therefore, the design and synthesis of highly sensitive, homogeneous, and stable SERS sensors is of great importance for the practical application of this technology. − It is well-known that hot spots play a crucial role in SERS substrates, therefore, the construction of SERS substrates with a large number of hot spots is a key issue in obtaining effective SERS substrates. , Different semiconductor materials have different SERS activities due to different carrier densities, band structures, dielectric constants, etc. − Finding and developing semiconductors with excellent SERS activity and then using morphology, size tuning, and doping can help develop semiconductor SERS substrates with higher enhancement factors (EFs) and lower detection limits. − …”

Section: Introductionmentioning

confidence: 99%

Plasmonic Molybdenum Dioxide Ultrathin Nanowire Bundles for Highly Sensitive, Stable, and Reproducible Surface-Enhanced Raman Spectroscopy

Zhang

Wei

et al. 2023

J. Phys. Chem. C

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In surface-enhanced Raman spectroscopy (SERS) detection, it is important to improve the sensitivity, stability, and reproducibility of semiconductor surface-enhanced Raman scattering (SERS) substrates. Here, a simple chemical method was used to synthesize molybdenum dioxide ultrathin nanowire bundles. The ultrathin nanowire bundles of molybdenum dioxide demonstrate distinct and robust surface plasmon resonance (SPR) effects within the visible light range. As a low-cost SERS substrate, the plasmonic molybdenum dioxide nanowire beams exhibit a Raman enhancement factor of 2.9 × 10 7 and a minimum detection limit of 1.0 × 10 −11 mol L −1 for Rhodamine 6G. In addition, these SERS substrates based on molybdenum dioxide ultrathin nanowires exhibit good chemical stability and can resist corrosion by strong acids and bases over time. The molybdenum dioxide ultrathin nanowire bundles have a high potential to become an ideal metal-oxidebased SERS substrate material.

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Section: Introductionmentioning

confidence: 99%

Plasmonic Molybdenum Dioxide Ultrathin Nanowire Bundles for Highly Sensitive, Stable, and Reproducible Surface-Enhanced Raman Spectroscopy

Zhang

Wei

et al. 2023

J. Phys. Chem. C

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“…Therefore, it is possible that the assembly of protein and porphyrin–polyphenol systems would be a bioelectronic attenuator. Metal sulfide clusters have been good photothermal agents for bacterial disinfection. , Investigation of the E. coli-catalyzed metal sulfidation, a biosynthesis method, and bacteria-targeting compounds for drug-resistant bacterial recognition and inhibition was performed.…”

Section: Introductionmentioning

confidence: 99%

Bacterium-Sculpted Porphyrin–Protein–Iron Sulfide Clusters for Distinction and Inhibition of Staphylococcus aureus

Chen

2022

Langmuir

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Microbe-catalyzed surface modification is a promising method for the production of special targeting nanomaterials. A bacterium-selective material can be obtained by investigating the microbe-catalyzed mineralization of proteins. Herein, a novel method was fabricated for the biosynthesis of FeS-decorated porphyrin−protein clusters (P-CA@BE) via E. coli (Escherichia coli)catalyzed bio-Fe(III) reduction and bio-sulfidation of porphyrin (P), caffeic acid (CA), and protein [bovine serum albumin (BSA)] assemblies. The assembly (P-CA@BSA) was identified by spectroscopic methods. Next, the P-CA@BSA assembly was transferred into FeS-decorated porphyrin−protein clusters (P-CA@BE) catalyzed by E. coli. There are partial β-folding proteins in P-CA@BE, which selectively recognize S. aureus (Staphylococcus aureus) and show different antibacterial properties against E. coli and S. aureus. Results demonstrate that the E. coli-catalyzed mineralization of the porphyrin−protein assembly is an effective method for the biosynthesis of S. aureus-sensitive metal−protein clusters.

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“…The conventional SERS phenomenon frequently takes place on the surface of noble metals, such as Au, Ag, Cu, and so on, where the Raman enhancement stems mainly from a very strong local field when the excitation wavelength is resonant with the plasmon excitations in the metal material and partly from the chemical interactions between the adsorbate and the substrate . Recent years, metallic compounds (Cu 2– x S, ZnO, and so on) have also been used as SERS platforms with excellent enhancement performance. , However, there are still some obstacles for the practical application of these metal-involved compounds or nanomaterials in the field of Raman enhancement, such as high cost, low stability, and side reactions of the adsorbate due to their catalytic effects . In order to avoid those obstacles, studying metal-free materials for Raman enhancement has become an urgent task …”

Section: Introductionmentioning

confidence: 99%

“…4 Recent years, metallic compounds (Cu 2−x S, ZnO, and so on) have also been used as SERS platforms with excellent enhancement performance. 5,6 However, there are still some obstacles for the practical application of these metalinvolved compounds or nanomaterials in the field of Raman enhancement, such as high cost, low stability, and side reactions of the adsorbate due to their catalytic effects. 7 In order to avoid those obstacles, studying metal-free materials for Raman enhancement has become an urgent task.…”

Section: Introductionmentioning

confidence: 99%

Polyaniline-Based Rose-like Chiral Nanostructures for Raman Enhancement

Zhou

Miao

Ren

et al. 2022

ACS Appl. Nano Mater.

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Metal-free materials for efficiently enhancing Raman spectrum represent a Frontier in the field of Raman enhancement. Herein, a metal-free Raman enhancement-active material, polyaniline (PANI)-based rose-like chiral nanostructures, which is fabricated by the oxidation polymerization of aniline occurred in a reaction droplet on a glass slide, is developed. The morphology of the as-prepared PANI nanostructures is well designed to rose-like chiral (left-handed or right-handed) nanostructures. Due to the suitable energy level and chiral nanostructure feature, the prepared PANI nanostructures exhibit excellent Raman enhancement performance compared with other metal-free materials. The enhancement factors of the chiral nanostructures are 10 times more than that of achiral nanostructures for dye molecules (e.g., 22.5 times for crystal violet), indicative of significance of the chiral nanostructure to the macroscopic performance. Moreover, the superior reproducibility and generality of the PANI-based rose-like chiral nanostructures illustrate its high potential in Raman enhancement applications. This work not only provides an efficient metal-free platform for Raman enhancement but also develops herein the idea, which is highly instructive for the rational design of advanced Raman enhancement-active materials for broader applications.

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Facile preparation of Cu2-xS supernanoparticles with an unambiguous SERS enhancement mechanism

Cited by 26 publications

References 52 publications

Plasmonic Molybdenum Dioxide Ultrathin Nanowire Bundles for Highly Sensitive, Stable, and Reproducible Surface-Enhanced Raman Spectroscopy

Plasmonic Molybdenum Dioxide Ultrathin Nanowire Bundles for Highly Sensitive, Stable, and Reproducible Surface-Enhanced Raman Spectroscopy

Bacterium-Sculpted Porphyrin–Protein–Iron Sulfide Clusters for Distinction and Inhibition of Staphylococcus aureus

Polyaniline-Based Rose-like Chiral Nanostructures for Raman Enhancement

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