In-Situ Corrosion Monitoring via Gel-Confined Operando Spectro-Electrochemistry
- 1Department of Chemistry, University of Louisville, 2320 S. Brook St, Louisville, KY, USA, 40292
- 2Department of Chemical Engineering
- 3University of Louisville
Abstract
Corrosion causes trillions of dollars in economic loss annually, yet real-time observation of interfacial alloy dissolution remains challenging due to rapid convective mixing, dynamic pH gradients, and post-dissolution side reactions. Here, we present in-situ corrosion monitoring technique (ICMT), a simple spectro-electrochemical approach that transforms buried interfacial corrosion into directly observable optical signals. By confining ionic transport within a transparent, ion-conductive gelatin gel, ICMT suppresses convection while stabilizing dissolved metal species, enabling real-time UV–Vis spectral resolution of Fe, Ni, and Cr dissolution kinetics. Diagnostic absorption features are identified for distinct metal-ion species, with corrosion rates from 0.14 to 14.4 nm s-1 across nearly two orders of magnitude in dissolution flux. By establishing a direct link between Faradaic dissolution, mass transport, and chemical speciation, this platform provides a generalizable framework for operando interrogation of dynamic metal–electrolyte interfaces.
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BibTeX
@misc{khan2026insitu,
title = {{In-Situ Corrosion Monitoring via Gel-Confined Operando Spectro-Electrochemistry}},
author = {Waliul I. Khan and Braydan Daniels and Javier Obregon and Craig A. Grapperhaus and Robert M. Buchanan and Aditya D. Mohite and Gautam Gupta and Waliul Islam Khan},
howpublished = {ChemRxiv},
year = {2026},
month = oct,
doi = {10.26434/chemrxiv.15011163/v1},
url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15011163/v1},
note = {CC BY},
}
RIS
TY - UNPB
TI - In-Situ Corrosion Monitoring via Gel-Confined Operando Spectro-Electrochemistry
AU - Waliul I. Khan
AU - Braydan Daniels
AU - Javier Obregon
AU - Craig A. Grapperhaus
AU - Robert M. Buchanan
AU - Aditya D. Mohite
AU - Gautam Gupta
AU - Waliul Islam Khan
PY - 2026
DA - 2026/10/27
PB - ChemRxiv
DO - 10.26434/chemrxiv.15011163/v1
UR - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15011163/v1
AB - Corrosion causes trillions of dollars in economic loss annually, yet real-time observation of interfacial alloy dissolution remains challenging due to rapid convective mixing, dynamic pH gradients, and post-dissolution side reactions. Here, we present in-situ corrosion monitoring technique (ICMT), a simple spectro-electrochemical approach that transforms buried interfacial corrosion into directly observable optical signals. By confining ionic transport within a transparent, ion-conductive gelatin gel, ICMT suppresses convection while stabilizing dissolved metal species, enabling real-time UV–Vis spectral resolution of Fe, Ni, and Cr dissolution kinetics. Diagnostic absorption features are identified for distinct metal-ion species, with corrosion rates from 0.14 to 14.4 nm s-1 across nearly two orders of magnitude in dissolution flux. By establishing a direct link between Faradaic dissolution, mass transport, and chemical speciation, this platform provides a generalizable framework for operando interrogation of dynamic metal–electrolyte interfaces.
ER -