Nanoporous Pt(Au) Alloys for the Enhanced, Non‐enzymatic Detection of Hydrogen Peroxide under Biofouling Conditions

The non‐enzymatic electrochemical sensing of hydrogen peroxide (H2O2) is described. This study utilized a 3D bicontinuous nanoporous platinum‐gold alloy‐based sensor (NP−Pt(Au) electrode), which has a morphology that resembles a molecular sieve. SEM and CV were used to evaluate the morphological and...

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Bibliographic Details
Published in:Electroanalysis (New York, N.Y.) N.Y.), 2022-12, Vol.34 (12), p.1893-1901
Main Authors: Khan, Rezaul K., Silva, Tiago A., Fatibello‐Filho, Orlando, Collinson, Maryanne M., Farghaly, Ahmed A.
Format: Article
Language:English
Subjects:
anti-biofouling
chemical dealloying
high surface area electrodes
MATERIALS SCIENCE
nanoporous platinum
sensor
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Summary:The non‐enzymatic electrochemical sensing of hydrogen peroxide (H2O2) is described. This study utilized a 3D bicontinuous nanoporous platinum‐gold alloy‐based sensor (NP−Pt(Au) electrode), which has a morphology that resembles a molecular sieve. SEM and CV were used to evaluate the morphological and electrochemical characteristics of the NP−Pt(Au) electrodes. The cathodic voltammetric response of H2O2 was enhanced at the NP−Pt(Au) as compared to planar Pt electrodes. The nanoporous electrode was able to maintain the H2O2 voltammetric profile even in the presence of the biofouling agent, serum albumin. Its application as a non‐enzymatic sensor for the amperometric measurement of H2O2 was explored.
ISSN:1040-0397
1521-4109
DOI:10.1002/elan.202100568