Investigation of molecular probes sensitivity to the fenton reaction using fluorescence spectroscopy

Venkateshkumar Prabhakaran, Christopher G. Arges, Vijay K. Ramani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A fluorescence spectroscopy system has been set up for studying the interaction of molecular probes (fluorescent dyes) with hydroxy and hydroperoxy radicals. From this work, a method will be developed for in-directly monitoring the chemical degradation of the Nafion® membrane in-situ during fuel cell operation. Different molecular probes (Fluorescein and 6-carboxy Fluorescein) have had their fluorescence signal assessed in solvent environments of varying pH. Stern-Volmer relationships have been observed and fitted to correlate hydrogen peroxide concentration to fluorescent signal quenching. Additionally, free radical scavengers were added to formulations and have shown to mitigate the free radical attack on the molecular probe.

Original languageEnglish (US)
Title of host publicationPolymer Electrolyte Fuel Cells 10, PEFC 10
Pages889-897
Number of pages9
Edition1 PART 1
DOIs
StatePublished - 2010
Event10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting - Las Vegas, NV, United States
Duration: Oct 10 2010Oct 15 2010

Publication series

NameECS Transactions
Number1 PART 1
Volume33
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting
Country/TerritoryUnited States
CityLas Vegas, NV
Period10/10/1010/15/10

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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