A sensitive o-aminophenol sensor based on a modified montmorillonite-modified expanded graphite electrode
Source abstract
Abstract
Abstract Modified montmorillonite (MMT)-modified expanded graphite electrode (EGE) was used as an amperometric sensor for o-aminophenol determination. The electrochemical behavior of o-aminophenol on the electrodes EGE, MMT-modified EGE and modified MMT-modified EGE was investigated. The response of o-aminophenol was noticeably improved with the modified MMT-modified EGE, which was attributed to the higher accumulation efficiency of modified MMT. The effect of the concentration of the supporting electrolyte was examined, and 0.5 M H2SO4 was finally employed. The calibration curve was linear for o-aminophenol concentrations from 1 to 100 μM (r = 0.9978) and from 100 to 1000 μM (r = 0.9984). The detection limit was as low as 0.5 μM (S/N = 3).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrochemical sensors and biosensors · Electrochemical Analysis and Applications · Analytical Chemistry and Sensors
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References (14)
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