Comparison of SERS effectiveness of copper substrates prepared by different methods: what are the values of enhancement factors?

Dendisová, Marcela; Prokopec, Vadym; Člupek, M.; Matějka, Pavel

doi:10.1002/jrs.3022

Cited by 61 publications

(47 citation statements)

References 40 publications

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“…26 Recently, Wu et al have also investigated the electrooxidation of 4-ABT on gold 4 electrodes by means of density functional theory (DFT) providing mechanistic insight into this reaction at metal electrodes. 34 On the other hand, Dendisova-Vyskovska et al 35 have used the spectra of adsorbed 4-ABT to evaluate the effectiveness of SERS on different Cu substrates at 1064-nm excitation using a FT-Raman spectrometer. However, no evidence of formation of 4,4′-DMAB was found under these experimental conditions as indicated by the absence of bands around 1142, 1390, and 1432 cm −1 .…”

mentioning

confidence: 99%

Spectroelectrochemical Study of the Photoinduced Catalytic Formation of 4,4′-Dimercaptoazobenzene from 4-Aminobenzenethiol Adsorbed on Nanostructured Copper

et al. 2015

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 type and power density of the laser. SERS spectra showed the formation of the 4,4'-DMAB on the nanostructured Cu surface independently of the laser employed. For the sake of comparison SERS spectra of a self-assembled monolayer of the 4-ABT on Ag surfaces decorated with Ag nanostructures have been also obtained with the same four lasers. When using the 532 nm and 632.8 nm lasers, the 4,4'-DMAB is formed on Cu surface at electrode potentials as low as -1.0 V (AgCl/Ag) showing a different behaviour with respect to Ag (and others metals such as Au and Pt). On the other hand, the Surface-Enhanced Infrared Reflection Absorption (SEIRA) spectra showed that in absence of the laser excitation the 4,4'-DMAB is not produced from the adsorbed 4-ABT on nanostructured Cu in the whole range of potentials studied. These results point out the prevalence of the role of electron-hole pairs through surface plasmon activity to explain the obtained SERS spectra.

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confidence: 99%

Spectroelectrochemical Study of the Photoinduced Catalytic Formation of 4,4′-Dimercaptoazobenzene from 4-Aminobenzenethiol Adsorbed on Nanostructured Copper

et al. 2015

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“…The intense absorption of the CuO x /Al 2 O 3 catalyst implies a high utilization efficiency of solar energy. The CuO x /Al 2 O 3 catalyst exhibits a maximum absorption peak at about 585 nm which greatly enhanced the absorption of visible‐light and the peak is a characteristic surface plasmon resonance peak of the reported Cu nanoparticles; additionally, the UV absorption part of the CuO x /Al 2 O 3 catalyst (inset of Figure C) is similar with the corresponding region of Cu 2 O (as shown in Figure S8), suggesting the dominant contribution of Cu 2 O, which is in accordance with XPS results (Figure S4B,C). The Cu 2 O is a typical p ‐type semiconductor (band gap of 2.0–2.3 eV) with high carrier mobility and can exhibit photocatalytic activity .…”

Section: Activities Over the Representative Catalytic Systems For Wgsmentioning

confidence: 99%

Solar‐Driven Water–Gas Shift Reaction over CuO_x/Al₂O₃ with 1.1 % of Light‐to‐Energy Storage

Zhao

Song

et al. 2019

Angewandte Chemie

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Hydrogen production from coal gasification provides a cleaning approach to convert coal resource into chemical energy, but the key procedures of coal gasification and thermal catalytic water–gas shift (WGS) reaction in this energy technology still suffer from high energy cost. We herein propose adopting a solar–driven WGS process instead of traditional thermal catalysis, with the aim of greatly decreasing the energy consumption. Under light irradiation, the CuOx/Al2O3 delivers excellent catalytic activity (122 μmol gcat−1 s−1 of H2 evolution and >95 % of CO conversion) which is even more efficient than noble‐metal‐based catalysts (Au/Al2O3 and Pt/Al2O3). Importantly, this solar‐driven WGS process costs no electric/thermal power but attains 1.1 % of light‐to‐energy storage. The attractive performance of the solar‐driven WGS reaction over CuOx/Al2O3 can be attributed to the combined photothermocatalysis and photocatalysis.

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“…silver, 106 gold, 107 and copper 108 ) that have nanoscale features ( e.g. roughened surfaces and nanoparticles).…”

Section: Spectrometrically or Optically Encoded Microspheres With mentioning

confidence: 99%

Suspension arrays based on nanoparticle-encoded microspheres for high-throughput multiplexed detection

et al. 2015

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Spectrometrically or optically encoded microsphere based suspension array technology (SAT) is applicable to the high-throughput, simultaneous detection of multiple analytes within a small, single sample volume. Thanks to the rapid development of nanotechnology, tremendous progress has been made in the multiplexed detecting capability, sensitivity, and photostability of suspension arrays. In this review, we first focus on the current stock of nanoparticle-based barcodes as well as the manufacturing technologies required for their production. We then move on to discuss all existing barcode-based bioanalysis patterns, including the various labels used in suspension arrays, label-free platforms, signal amplification methods, and fluorescence resonance energy transfer (FRET)-based platforms. We then introduce automatic platforms for suspension arrays that use superparamagnetic nanoparticle-based microspheres. Finally, we summarize the current challenges and their proposed solutions, which are centered on improving encoding capacities, alternative probe possibilities, nonspecificity suppression, directional immobilization, and “point of care” platforms. Throughout this review, we aim to provide a comprehensive guide for the design of suspension arrays, with the goal of improving their performance in areas such as multiplexing capacity, throughput, sensitivity, and cost effectiveness. We hope that our summary on the state-of-the-art development of these arrays, our commentary on future challenges, and some proposed avenues for further advances will help drive the development of suspension array technology and its related fields.

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Comparison of SERS effectiveness of copper substrates prepared by different methods: what are the values of enhancement factors?

Cited by 61 publications

References 40 publications

Spectroelectrochemical Study of the Photoinduced Catalytic Formation of 4,4′-Dimercaptoazobenzene from 4-Aminobenzenethiol Adsorbed on Nanostructured Copper

Spectroelectrochemical Study of the Photoinduced Catalytic Formation of 4,4′-Dimercaptoazobenzene from 4-Aminobenzenethiol Adsorbed on Nanostructured Copper

Solar‐Driven Water–Gas Shift Reaction over CuO_x/Al₂O₃ with 1.1 % of Light‐to‐Energy Storage

Suspension arrays based on nanoparticle-encoded microspheres for high-throughput multiplexed detection

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Comparison of SERS effectiveness of copper substrates prepared by different methods: what are the values of enhancement factors?

Cited by 61 publications

References 40 publications

Spectroelectrochemical Study of the Photoinduced Catalytic Formation of 4,4′-Dimercaptoazobenzene from 4-Aminobenzenethiol Adsorbed on Nanostructured Copper

Spectroelectrochemical Study of the Photoinduced Catalytic Formation of 4,4′-Dimercaptoazobenzene from 4-Aminobenzenethiol Adsorbed on Nanostructured Copper

Solar‐Driven Water–Gas Shift Reaction over CuOx/Al2O3 with 1.1 % of Light‐to‐Energy Storage

Suspension arrays based on nanoparticle-encoded microspheres for high-throughput multiplexed detection

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Solar‐Driven Water–Gas Shift Reaction over CuO_x/Al₂O₃ with 1.1 % of Light‐to‐Energy Storage