In situ surface-enhanced Raman spectroscopy monitoring of molecular reorientation in plasmon-mediated chemical reactions

Zhou, Binbin; Zhong, Jing; Tang, Xinxue; Liu, Jiahua; Shen, Junda; Wang, Chong; Ou, Weihui; Wang, Hao; Liu, Lu; Lü, Jian; Li, Yang Yang

doi:10.1016/j.jcat.2022.06.028

Cited by 9 publications

(3 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, some other reasons may also contribute to the appearance of new peaks on the SERS spectrum. Because the surface reactions on the plasmonic surface can be influenced by many factors, such as laser wavelength and laser power (Figures S5–S7), we cannot eliminate other contributions to the appearance of the new peaks on the SERS spectrum, such as the formation of Au + due to the plasmonic catalysis and its complex (Au + -PATP-Au + ) (Figure S4), the oxidation intermediates of PATP amino group, and the configuration change of PATP molecule on gold surface, ,− and it is worth noting that our research primarily focuses on the fabrication of chemical sensors for the silver ions. For a deep understanding of the mechanism, we need to perform more instrumental characterizations and theoretical calculations in the future.…”

Section: Resultsmentioning

confidence: 99%

SERS Nanosensor for the Detection of Ag(I) Ions under High-Chloride Environment: Breaking Chloride Masking Effect

Zhang,

Liu,

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

SERS Nanosensor for the Detection of Ag(I) Ions under High-Chloride Environment: Breaking Chloride Masking Effect

Zhang,

Liu,

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

“…It has long been believed that the LSPR generated by irradiating the NPs with light of an appropriate wavelength leads to the formation of hot carriers, which are subsequently injected into the molecular orbitals. This injection enables the chemical homocoupling of p -amino thiophenol (PATP) molecules, depicted in the lower inset of Figure b, resulting in the formation of p,p′-dimercaptoazobenzene (DMAB) as a product, − as shown in the upper inset of Figure b. This process can be effectively studied by using Raman spectroscopy.…”

Section: Resultsmentioning

confidence: 99%

Visible-Light-Enhanced Hydrogen Evolution through Anodic Furfural Electro-Oxidation Using Nickel Atomically Dispersed Copper Nanoparticles

Chen,

Xu,

et al. 2023

Inorg. Chem.

View full text Add to dashboard Cite

A novel copper nanoparticle variant, denoted as Cu 98 Ni 2 NPs, which incorporate Ni atoms in an atomically dispersed manner, has been successfully synthesized via a straightforward one-pot electrochemical codeposition process. These nanoparticles were subsequently employed as an anode to facilitate the oxidation of furfural, leading to the production of hydrogen gas. Voltammetric measurements revealed that the inclusion of trace amounts of Ni atoms in the nanoparticles resulted in a pronounced synergistic electronic effect between Cu and Ni. Consequently, a 43% increase in current density at 0.1 V was observed in comparison to pure Cu NPs. Importantly, when the Cu 98 Ni 2 NPs were irradiated with visible light, a remarkable current density enhancement factor of 505% at 0.1 V was achieved relative to that of pure Cu NPs in the absence of light. This enhancement can be attributed to localized surface plasmon resonance induced by visible light, which triggers photothermal and photoelectric effects. These effects collectively contribute to the significant overall improvement in the electrocatalytic oxidation of furfural, leading to enhanced hydrogen evolution.

show abstract

“…Besides, the reorientation effect, defined here as the orientation of the probe molecules confined by the substrates during the adsorption process, would also affect the SERS results because the EM degree and CT process are dependent, to some extent, on how the molecules are distributed. , For instance, if the molecule is reoriented in a pattern such that the location where the Raman scattering occurred of the molecule is closer to the localized surface plasmon resonance (LSPR) core, the EM degree to this mode should be higher . The CT process is also dependent on the reorientation of the molecules because the relative locations of the charge-donating or charge-receiving moiety would change accordingly. , In this present work, there was a possible reorientation phenomenon of methyl orange (MO).…”

mentioning

confidence: 99%

Metal–Organic-Frameworks-Isolated Au Nanobipyramids as Synergetic Surface-Enhanced-Raman-Scattering Substrates

Zhang

Lin

et al. 2022

ACS Materials Lett.

View full text Add to dashboard Cite

Recently, mushrooming efforts in surface-enhanced Raman scattering (SERS) have been devoted to applying semiconductor-like metal− organic frameworks (MOFs) as a charge-transfer center rather than only a porous filter or stabilizing layer in a metal@MOF core−shell substrate. However, the influence of an enhanced electric field on the charge-transfer process of MOFs has not been quantitatively explored, leading to an elusive understanding of the synergetic effect of metal@MOF core−shell substrates. Here we reveal a synergetic effect through SERS measurements of gold nanobipyramid (Au NBP) @zeolitic-imidazolate-framework (ZIF) core−shell nanostructures with varied thickness and composition of the shell. The synergetic effect was confirmed by the stronger enhancement factors of some NBP@ZIFs than that of pure NBP-785 with methyl orange (MO) and rhodamine 6G as the probe. Moreover, a reorientation phenomenon of MO discovered in the ZIF shell probably also accounted for the higher intensity, given that the probe orientation could impact the SERS intensity. Besides elucidating the charge transfer and synergy effect of the metal@MOF core−shell SERS substrates, this work could also provide new ideas to enrich the family of the shell-isolated nanoparticle-enhanced Raman spectroscopy substrates by employing porous materials as the shell.

show abstract

In situ surface-enhanced Raman spectroscopy monitoring of molecular reorientation in plasmon-mediated chemical reactions

Cited by 9 publications

References 29 publications

SERS Nanosensor for the Detection of Ag(I) Ions under High-Chloride Environment: Breaking Chloride Masking Effect

SERS Nanosensor for the Detection of Ag(I) Ions under High-Chloride Environment: Breaking Chloride Masking Effect

Visible-Light-Enhanced Hydrogen Evolution through Anodic Furfural Electro-Oxidation Using Nickel Atomically Dispersed Copper Nanoparticles

Metal–Organic-Frameworks-Isolated Au Nanobipyramids as Synergetic Surface-Enhanced-Raman-Scattering Substrates

Contact Info

Product

Resources

About