Surface-enhanced Raman Spectroscopy for Versatile in situ Measurements of Local pH near Electrode Surface

Kohei Ide; Masahiro Kunimoto; Satoru Yoshida; Masahiro Yanagisawa; Takayuki Homma

doi:10.1002/elan.202200075

Surface-enhanced Raman Spectroscopy for Versatile in situ Measurements of Local pH near Electrode Surface

Kohei Ide, Masahiro Kunimoto, Satoru Yoshida, Masahiro Yanagisawa, Takayuki Homma^*

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We designed an in situ surface-enhanced Raman spectroscopy (SERS) system to detect pH change near the electrode surface. An optically transparent substrate covered with Ag nanoparticles (NPs) that induce SERS was positioned vertically to the electrode. A probe molecule that protonates/deprotonates according to the change in pH of surroundings were distributed nearby the NPs, so that the SERS spectrum of the probe indicated the pH changes in the vertical direction to the electrode due to hydrogen consumption. Flexible choices of probe molecules allow the system to be versatile. The system operated effectively in Ni electrodeposition as a case example.

Original language	English
Pages (from-to)	1682-1689
Number of pages	8
Journal	Electroanalysis
Volume	34
Issue number	11
DOIs	https://doi.org/10.1002/elan.202200075
Publication status	Published - 2022 Nov

Keywords

Electrochemistry
Interfaces
Local pH analysis
Nanoparticles
Surface-enhanced Raman scattering (SERS)

ASJC Scopus subject areas

Analytical Chemistry
Electrochemistry

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10.1002/elan.202200075

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title = "Surface-enhanced Raman Spectroscopy for Versatile in situ Measurements of Local pH near Electrode Surface",

abstract = "We designed an in situ surface-enhanced Raman spectroscopy (SERS) system to detect pH change near the electrode surface. An optically transparent substrate covered with Ag nanoparticles (NPs) that induce SERS was positioned vertically to the electrode. A probe molecule that protonates/deprotonates according to the change in pH of surroundings were distributed nearby the NPs, so that the SERS spectrum of the probe indicated the pH changes in the vertical direction to the electrode due to hydrogen consumption. Flexible choices of probe molecules allow the system to be versatile. The system operated effectively in Ni electrodeposition as a case example.",

keywords = "Electrochemistry, Interfaces, Local pH analysis, Nanoparticles, Surface-enhanced Raman scattering (SERS)",

author = "Kohei Ide and Masahiro Kunimoto and Satoru Yoshida and Masahiro Yanagisawa and Takayuki Homma",

note = "Funding Information: This work was financially supported in part by the “Development of Systems and Technology for Advanced Measurement and Analysis” and “Adaptable and Seamless Technology transfer Program through Target‐driven R&D (A‐STEP, JPMJTR202K)” from the Japan Science and Technology Agency (JST), Japan. Funding Information: This work was financially supported in part by the “Development of Systems and Technology for Advanced Measurement and Analysis” and “Adaptable and Seamless Technology transfer Program through Target-driven R&D (A-STEP, JPMJTR202K)” from the Japan Science and Technology Agency (JST), Japan. Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",

year = "2022",

month = nov,

doi = "10.1002/elan.202200075",

language = "English",

volume = "34",

pages = "1682--1689",

journal = "Electroanalysis",

issn = "1040-0397",

publisher = "Wiley-VCH Verlag",

number = "11",

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AU - Ide, Kohei

AU - Kunimoto, Masahiro

AU - Yoshida, Satoru

AU - Yanagisawa, Masahiro

AU - Homma, Takayuki

N1 - Funding Information: This work was financially supported in part by the “Development of Systems and Technology for Advanced Measurement and Analysis” and “Adaptable and Seamless Technology transfer Program through Target‐driven R&D (A‐STEP, JPMJTR202K)” from the Japan Science and Technology Agency (JST), Japan. Funding Information: This work was financially supported in part by the “Development of Systems and Technology for Advanced Measurement and Analysis” and “Adaptable and Seamless Technology transfer Program through Target-driven R&D (A-STEP, JPMJTR202K)” from the Japan Science and Technology Agency (JST), Japan. Publisher Copyright: © 2022 Wiley-VCH GmbH.

PY - 2022/11

Y1 - 2022/11

N2 - We designed an in situ surface-enhanced Raman spectroscopy (SERS) system to detect pH change near the electrode surface. An optically transparent substrate covered with Ag nanoparticles (NPs) that induce SERS was positioned vertically to the electrode. A probe molecule that protonates/deprotonates according to the change in pH of surroundings were distributed nearby the NPs, so that the SERS spectrum of the probe indicated the pH changes in the vertical direction to the electrode due to hydrogen consumption. Flexible choices of probe molecules allow the system to be versatile. The system operated effectively in Ni electrodeposition as a case example.

AB - We designed an in situ surface-enhanced Raman spectroscopy (SERS) system to detect pH change near the electrode surface. An optically transparent substrate covered with Ag nanoparticles (NPs) that induce SERS was positioned vertically to the electrode. A probe molecule that protonates/deprotonates according to the change in pH of surroundings were distributed nearby the NPs, so that the SERS spectrum of the probe indicated the pH changes in the vertical direction to the electrode due to hydrogen consumption. Flexible choices of probe molecules allow the system to be versatile. The system operated effectively in Ni electrodeposition as a case example.

KW - Electrochemistry

KW - Interfaces

KW - Local pH analysis

KW - Nanoparticles

KW - Surface-enhanced Raman scattering (SERS)

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DO - 10.1002/elan.202200075

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SP - 1682

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JO - Electroanalysis

JF - Electroanalysis

SN - 1040-0397

IS - 11

ER -

Surface-enhanced Raman Spectroscopy for Versatile in situ Measurements of Local pH near Electrode Surface

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Keywords

ASJC Scopus subject areas

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