High Peroxidase-like Activity of Single Iron Atoms Anchored on N-doped Porous Carbon for the Colorimetric Detection of Biothiols
Abstract
In this report, single iron atoms anchored on nitrogen-doped porous carbon (Fe-ISAs/CN) was prepared and shown to possess high peroxidase-like activity. Fe-ISAs/CN could effi ciently catalyze the oxidation of the peroxidase substrate 3,3?,5,5?-tetramethylbenzidine (TMB) in the presence of H2O2, producing a blue color. In terms of the excellent peroxidase-like activity, single iron atoms anchored on nitrogen-doped porous carbon playing a critical role. Besides, an inhibition effect on the oxidation of TMB catalyzed by Fe-ISAs/CN was induced by biothiols in the presence of H2O2. Taking these advantages together, a simple colorimetric method for rapid and sensitive detection of biothiols was established.
Keywords
Fe-ISAs/CN; TMB; Colorimetric detection
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DOI: http://dx.doi.org/10.18686/cle.v2i2.3825
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