pH of water intercalated into graphite oxide as determined by EPR spectroscopy
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Abstract
AbstractTwo pH-sensitive spin probes 4-(methylamino)-2-ethyl-5,5-dimethyl-4-pyridine-2-yl-2,5-dihydro-1H-imidazol-1-oxyl (DPI, also known as MEP) and 2,2,3,5,5-pentamethyl-2,5-dihydro-1H-imidazol-1-oxyl (MTI) were used to measure pH of water intercalated in Brodie graphite oxide. pH value was found to be 2.25 ± 0.05 immediately after adding of water to graphite oxide and decreased to 1.75 ± 0.05 duringca.30 hours.
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- last seen: 2026-05-19T01:45:01.086888+00:00