Electrochemical tip-enhanced Raman Spectroscopy for microscopic studies of electrochemical interfaces

Yokota, Yasuyuki; Hong, Misun; Hayazawa, Norihiko; Kim, Yousoo

doi:10.1016/j.surfrep.2022.100576

Cited by 7 publications

(4 citation statements)

References 198 publications

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“…247 In-situ surface-enhanced Raman spectroscopy could be developed to detect the subtle EDL structure, specifically the details of ion distribution and reactant adsorption on the electrode interface. 248,249 Other inspiring techniques include electrochemical scanning probe microscopy, 250,251 enhanced spectroscopy, 252 and their combinations.…”

Section: Discussionmentioning

confidence: 99%

“…In-situ liquid time-of-flight secondary ion mass spectrometry can discriminate the ion–solvent interactions and properties in confined membrane pores, through which reactant structure and transformation inside EMs may be precisely acquired . In-situ surface-enhanced Raman spectroscopy could be developed to detect the subtle EDL structure, specifically the details of ion distribution and reactant adsorption on the electrode interface. , Other inspiring techniques include electrochemical scanning probe microscopy, , enhanced spectroscopy, and their combinations.…”

Section: Discussionmentioning

confidence: 99%

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Inorganic Electrified Membrane: From Basic Science to Performance Translation

et al. 2023

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Decentralized water systems necessitate intensified, robust, and modular water treatment technologies for enhanced efficacy and resilience of the water purification process. Inorganic electrified membranes (IEMs) are gaining momentum in decentralized water systems by combining the versatility of electro-filtration processes with the favorable properties of inorganic materials, namely, strong mechanical strength, chemical stability, and hydrophilicity. This review quantitatively assesses three mainstream IEMs (i.e., Ti4O7, carbon, and metallic IEMs) from a fundamental perspective of the intrinsic electrochemical properties of the IEM materials and their translation into the IEM performances. We specifically (i) analyze the •OH production selectivity by Ti4O7 IEMs based on electrochemical thermodynamics and material science; (ii) differentiate degradation mechanisms of carbon IEMs in the context of various water matrices and propose strategies to address major concerns of avoiding membrane passivation and improving Faradaic efficiency of carbon IEMs; and (iii) highlight metallic IEMs doped with Ag or Pd, i.e., elucidate the combined sterilization mechanism by Ag-IEM via Ag+ dissolution and electro-phenomena, and unravel the unique hydrogenolysis ability of Pd-IEM for hydrodeoxygenation and persulfate electro-activation. We conclude by identifying the remaining obstacles of IEMs and present possible interdisciplinary approaches for IEM optimization.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Inorganic Electrified Membrane: From Basic Science to Performance Translation

et al. 2023

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“…By providing a solution to the long-standing issue of the EC-STM probe, we expect the application of EC-STM to a wider range of materials, solutions, and techniques. Advanced experiments such as tip-enhanced spectroscopy and scanning tunneling spectroscopy , facilitated by the optimization of probe fabrication conditions pave the way for versatile measurements on the single-molecule scale at solid–liquid interfaces …”

Section: Discussionmentioning

confidence: 99%

Electrodeposited Gold Probe for Electrochemical Scanning Tunneling Microscopy

et al. 2023

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Direct measurements at the solid−liquid interface on the nanometer scale provide information about various physical and chemical processes from both fundamental and applied aspects. Electrochemical scanning tunneling microscopy (EC-STM) is a powerful tool that makes it possible to perform STM measurements at the solid−liquid interfaces. However, EC-STM remains challenging due to the difficulty of fabricating the probe for tunneling current measurements in solutions. In this study, we established a novel and versatile method to easily fabricate the EC-STM probe with high reproducibility. By electrochemically depositing Au on a pyrolytic carbon formed within the glass nanopipette which has an aperture of several hundred nanometers, we achieved a sufficient insulation with almost 100% probability, which overcomes the 30-year challenge of previous EC-STM studies. High-quality EC-STM images could be stably obtained with a yield of >80% using the probe. It will pave the way for future advanced measurements at a variety of solid−liquid interfaces, such as single molecule spectroscopy and electronic structure characterizations.

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“…1(e)]. [9][10][11] TERS is the method for efficiently detecting Raman scattered light through the excitation of plasmons by irradiating the laser beam onto an Au or Ag tip. [12][13][14][15] In particular, TERS in UHV has made remarkable progress since the work of Zhang et al in 2013, and even Raman vibrational mapping within a single molecule is now possible by combining the research fields of optics and surface science.…”

Section: Introductionmentioning

confidence: 99%

In situ and ex situ approaches for molecular scale understanding of electrochemical interfaces

Yokota

2024

Jpn. J. Appl. Phys.

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Microscopic studies on electrolyte solution / electrode interfaces provide the most fundamental information not only for understanding the electric double layer formed at the interfaces but also for designing sophisticated electrochemical (EC) devices. In this study, we developed tip-enhanced Raman spectroscopy (TERS), which is based on an electrochemical scanning tunneling microscope (EC-STM), and demonstrated electrochemical TERS (EC-TERS) measurements of benzenethiol monolayers on Au(111). A specially-designed cell enables us to carry out reproducible EC, EC-STM, and EC-TERS measurements, which indicates consistent results among these techniques for the oxidative desorption of the benzenethiol monolayers.

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Electrochemical tip-enhanced Raman Spectroscopy for microscopic studies of electrochemical interfaces

Cited by 7 publications

References 198 publications

Inorganic Electrified Membrane: From Basic Science to Performance Translation

Inorganic Electrified Membrane: From Basic Science to Performance Translation

Electrodeposited Gold Probe for Electrochemical Scanning Tunneling Microscopy

In situ and ex situ approaches for molecular scale understanding of electrochemical interfaces

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