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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1016/j.jelechem.2022.116101
|2 doi
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|a pubmed25n1125.xml
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|a (NLM)35250418
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|a (PII)116101
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Wu, Bo
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Ferrocene-Grafted Carbon Nanotubes for Sensitive Non-Enzymatic Electrochemical Detection of Hydrogen Peroxide
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 02.03.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Sensitive detection of hydrogen peroxide (H2O2) residue in aseptic packaging at point of use is critical to food safety. We present a sensitive non-enzymatic, amperometric H2O2 sensor based on ferrocene-functionalized multi-walled carbon nanotubes (MWCNT-FeC) and facile screen-printed carbon electrodes (SPCEs). The sensor utilizes the covalently grafted ferrocene as an effective redox mediator and the MWCNT networks to provide a large active surface area for efficient electrocatalytic reactions. The electrocatalytic MWCNT-FeC modified electrodes feature a high-efficiency electron transfer and a high electrocatalytic activity towards H2O2 reduction at a low potential of -0.15 V vs. Ag/AgCl. The decreased operating potential improves the selectivity by inherently eliminating the cross-reactivity with other electroactive interferents, such as dopamine, glucose, and ascorbic acid. The sensor exhibits a wide linear detection range from 1 μM to 1 mM with a detection limit of 0.49 μM (S/N=3). The covalently functionalized electrodes offered highly reproducible and reliable detection, providing a robust property for continuous, real-time H2O2 monitoring. Furthermore, the proposed sensor was successfully employed to determine H2O2 levels in spiked packaged milk and apple juice with satisfactory recoveries (94.33-97.62%). The MWCNT-FeC modified SPCEs offered a facile, cost-effective method for highly sensitive and selective point-of-use detection of H2O2
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|a Journal Article
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|a Hydrogen peroxide
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|a amperometric biosensor
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|a ferrocene carbon nanotube
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|a low potential
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|a non-enzymatic
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1 |
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|a Yeasmin, Sanjida
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Ye
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cheng, Li-Jing
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Journal of electroanalytical chemistry (Lausanne, Switzerland)
|d 1999
|g 908(2022) vom: 01. März
|w (DE-627)NLM098241281
|x 1572-6657
|7 nnas
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| 773 |
1 |
8 |
|g volume:908
|g year:2022
|g day:01
|g month:03
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|u http://dx.doi.org/10.1016/j.jelechem.2022.116101
|3 Volltext
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