Surface-enhanced Raman scattering-active AuNR array cellulose films for multi-hazard detection

Kim, Dabum; Gwon, Goomin; Lee, Gangyoon; Jeon, Youngho; Kim, Ung Jin; ALOthman, Zeid A.; You, Jungmok

doi:10.1016/j.jhazmat.2020.123505

Cited by 31 publications

(15 citation statements)

References 38 publications

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“…Inkjet printing offers easy-to-design complex geometries using a personal computer and it is feasible to print already prepared NPs (by laser-based or chemical methods) and in-situ synthesis is also possible by loading precursor agents in different color ink cartridges 90 . Furthermore, to improve the SERS substrate efficiency and to avoid unwanted spreading of NPs, hydrophobic modification of paper has been exploited before the printing of NPs 91 . Kim et al 92 .…”

Section: Paper-based Sers Substratesmentioning

confidence: 99%

Flexible SERS substrates for hazardous materials detection: recent advances

Moram¹,

Soma²

2021

OEA

150

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This article reviews the most recent advances in the development of flexible substrates used as surface-enhanced Raman scattering (SERS) platforms for detecting several hazardous materials (e.g., explosives, pesticides, drugs, and dyes). Different flexible platforms such as papers/filter papers, fabrics, polymer nanofibers, and cellulose fibers have been investigated over the last few years and their SERS efficacies have been evaluated. We start with an introduction of the importance of hazardous materials trace detection followed by a summary of different SERS methodologies with particular attention on flexible substrates and their advantages over the nanostructures and nanoparticle-based solid/hybrid substrates. The potential of flexible SERS substrates, in conjunction with a simple portable Raman spectrometer, is the power to enable practical/on-field/point of interest applications primarily because of their low-cost and easy sampling.

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Section: Paper-based Sers Substratesmentioning

confidence: 99%

Flexible SERS substrates for hazardous materials detection: recent advances

Moram¹,

Soma²

2021

OEA

150

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“…In the XRD patterns, the characteristic (002) diffraction peak at 26.8° of the BNNS powder is weaker than that of bulk BN due to the decreased thickness (Figure g). , The FTIR spectra are shown in Figure h, and both the BNNS and bulk BN have peaks at 781 and 1373 cm –1 , which were attributed to the out-of-plane B–N–B bending deformation and B–N stretching vibration. , The BNNS, on the other hand, has an additional peak at 1060 cm –1 , which is assigned to the glycosidic bond of HEC, , indicating that the HEC molecular chains were successfully grafted onto the surface of BNNS, as schematically shown in Figure f. The Raman spectra of the BNNS and BN show a typical peak from an E 2g vibration mode, and the rough Raman line of BNNS compared with bulk BN may be caused by the introduction of organic HEC (Figure i). Figure j shows the TGA curves of the bulk BN and BNNS, At 700 °C, the mass of BNNS is reduced by 6.5%, corresponding to the HEC mass in BNNS .…”

Section: Resultsmentioning

confidence: 99%

“…34,35 The BNNS, on the other hand, has an additional peak at 1060 cm −1 , which is assigned to the glycosidic bond of HEC, 36,37 indicating that the HEC molecular chains were successfully grafted onto the surface of BNNS, as schematically shown in Figure 1f. The Raman spectra of the BNNS and BN show a typical peak from an E 2g vibration mode, 35 and the rough Raman line of BNNS compared with bulk BN may be caused by the introduction of organic HEC 38 (Figure 1i). Figure 1j shows the TGA curves of the bulk BN and BNNS, At 700 °C, the mass of BNNS is reduced by 6.5%, corresponding to the HEC mass in BNNS.…”

Section: Resultsmentioning

confidence: 99%

Ball-Milling Exfoliation of Hexagonal Boron Nitride in Viscous Hydroxyethyl Cellulose for Producing Nanosheet Films as Thermal Interface Materials

Huang

Songfeng

et al. 2021

ACS Appl. Nano Mater.

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Boron nitride nanosheets (BNNS) exfoliated by physical or chemical methods frequently exhibit poor dispersity in common solvents due to incomplete exfoliation and a low degree of functionalization, which has severely impacted BNNS application performances as polymer and lubricant additives. In this work, we mechanically exfoliated the bulk boron nitride into nanosheets through a ball-milling method by adopting the viscous hydroxyethyl cellulose (HEC) solution as a medium. Because of the abundant hydroxyls and strong hydrogen bonding interactions with BNNS, the HEC can not only serve as an intercalator and a protective agent of the BNNS during ball milling but can also benefit the stable dispersion of the fabricated HEC/BNNS mixture in water. The HEC/BNNS aqueous dispersion obtained by directly pouring deionized water into the ball-milled product is easy to form a two-dimensional film via the solution-casting method. Because of the good exfoliation and dispersion of the BNNS in the HEC matrix, the HEC/BNNS films have high mechanical strength and thermal conductivity and have the potential to be used as thermal interface materials.

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“…Consequently, the design, construction, and mass production of highly sensitive nanomaterials are key prerequisites for the trace detection of chemical and biological analytes, especially for commercial applications in the near future. To date, remarkable success in sensitivity has been achieved by fabricating diverse silver or gold geometrical nanostructures such as nanospheres [ 11 ], nanorods [ 12 ], nanostars [ 13 , 14 , 15 ], and nanourchins [ 16 , 17 , 18 ], which serve as basic building blocks for the sensing colloids or solid substrates. Among those architectures, the hierarchical nanostructures have attracted significant attention because of their ultimate enhancement factors (EFs) of 10 7 –10 9 , benefiting from the plentiful hotspots formed between nanoscopic gaps, corners, valleys, sharp protrusions, and crevices [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

High-Density-Nanotips-Composed 3D Hierarchical Au/CuS Hybrids for Sensitive, Signal-Reproducible, and Substrate-Recyclable SERS Detection

Liu²,

et al. 2022

Nanomaterials

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Surface-enhanced Raman scattering (SERS) provides an unprecedented opportunity for fingerprinting identification and trace-level detection in chemistry, biomedicine, materials, and so on. Although great efforts have been devoted to fabricating sensitive plasmonic nanomaterials, it is still challenging to batch-produce a SERS substrate with high sensitivity, good reproducibility, and perfect recyclability. Here, we describe a facile fabrication of three-dimensional (3D) hierarchical Au/CuS nanocomposites, in which high-density Au nanotips enable highly SERS-active sensing, and the well-defined microflower (MF) geometry produces perfect signal reproducibility (RSD < 5%) for large laser spot excitations (>50 μm2), which is particularly suitable for practical on-site detection with a handheld Raman spectrometer. In addition, a self-cleaning ability of this Au/CuS Schottky junction photocatalyst under sunlight irradiation allows complete removal of the adsorbed analytes, realizing perfect regeneration of the SERS substrates over many cycles. The mass-production, ultra-sensitive, high-reproducibility, and fast-recyclability features of hierarchical Au/CuS MFs greatly facilitate cost-effective and field SERS detection of trace analytes in practice.

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Surface-enhanced Raman scattering-active AuNR array cellulose films for multi-hazard detection

Cited by 31 publications

References 38 publications

Flexible SERS substrates for hazardous materials detection: recent advances

Flexible SERS substrates for hazardous materials detection: recent advances

Ball-Milling Exfoliation of Hexagonal Boron Nitride in Viscous Hydroxyethyl Cellulose for Producing Nanosheet Films as Thermal Interface Materials

High-Density-Nanotips-Composed 3D Hierarchical Au/CuS Hybrids for Sensitive, Signal-Reproducible, and Substrate-Recyclable SERS Detection

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