Abstract
In this paper a three-dimensional biomass porous carbon material (WSBPC) was prepared via carbonization combining with KOH activation method by using waste walnut shells as raw materials. Then WSBPC was adopted as a modifier to construct an electrochemical sensing platform based on carbon ionic liquid electrode for sensitive detection of trichloroacetic acid (TCA) and potassium bromate (KBrO3), in which horseradish peroxidase (HRP) was used as the catalyst and Au nanoparticle was employed as signal amplifier. The detection ranges of the supposed sensing platform for testing TCA and KBrO3 were 10.0–1000.0 mM and 0.10–1.10 mM with the lower detection limits as 3.33 mM and 0.03 mM. Beside, this method was used to determine the KBrO3 content in tap water samples with satisfactory results.
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