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Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes

An amperometric enzyme-free hydrogen peroxide (H2O2) sensor was developed by catalytically stabilizing active gold nanoparticles (Au NPs) of 4–5 nm on a porous titanium dioxide nanotube (TiO2 NTs) electrode. The Au NPs were homogeneously distributed on anatase TiO2 NTs with an outer diameter of ~102...

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Main Authors: Kader, Md. Ashraful, Nina Suhaity, Azmi, Kafi, A. K. M., Hossain, Md. Sanower, Jose, Rajan, Goh, Khang Wen
Format: Article
Language:English
Published: MDPI 2023
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/39948/1/biosensors-13-00671.pdf
http://umpir.ump.edu.my/id/eprint/39948/
https://doi.org/10.3390/bios13070671
https://doi.org/10.3390/bios13070671
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spelling my.ump.umpir.399482024-01-11T01:32:53Z http://umpir.ump.edu.my/id/eprint/39948/ Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes Kader, Md. Ashraful Nina Suhaity, Azmi Kafi, A. K. M. Hossain, Md. Sanower Jose, Rajan Goh, Khang Wen TP Chemical technology An amperometric enzyme-free hydrogen peroxide (H2O2) sensor was developed by catalytically stabilizing active gold nanoparticles (Au NPs) of 4–5 nm on a porous titanium dioxide nanotube (TiO2 NTs) electrode. The Au NPs were homogeneously distributed on anatase TiO2 NTs with an outer diameter of ~102 nm, an inner diameter of ~60 nm, and a wall of thickness of ~40 nm. The cyclic voltammogram of the composite electrode showed a pair of redox peaks characterizing the electrocatalytic reduction of H2O2. The entrapping of Au NPs on TiO2 NTs prevented aggregation and facilitated good electrical conductivity and electron transfer rate, thus generating a wide linear range, a low detection limit of ~104 nM, and high sensitivity of ~519 µA/mM, as well as excellent selectivity, reproducibility, repeatability, and stability over 60 days. Furthermore, excellent recovery and relative standard deviation (RSD) were achieved in real samples, which were tap water, milk, and Lactobacillus plantarum bacteria, thereby verifying the accuracy and potentiality of the developed nonenzymatic sensor. MDPI 2023-07 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/39948/1/biosensors-13-00671.pdf Kader, Md. Ashraful and Nina Suhaity, Azmi and Kafi, A. K. M. and Hossain, Md. Sanower and Jose, Rajan and Goh, Khang Wen (2023) Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes. Biosensors, 13 (7). pp. 1-17. ISSN 2079-6374. (Published) https://doi.org/10.3390/bios13070671 https://doi.org/10.3390/bios13070671
institution Universiti Malaysia Pahang Al-Sultan Abdullah
building UMPSA Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang Al-Sultan Abdullah
content_source UMPSA Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Kader, Md. Ashraful
Nina Suhaity, Azmi
Kafi, A. K. M.
Hossain, Md. Sanower
Jose, Rajan
Goh, Khang Wen
Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes
description An amperometric enzyme-free hydrogen peroxide (H2O2) sensor was developed by catalytically stabilizing active gold nanoparticles (Au NPs) of 4–5 nm on a porous titanium dioxide nanotube (TiO2 NTs) electrode. The Au NPs were homogeneously distributed on anatase TiO2 NTs with an outer diameter of ~102 nm, an inner diameter of ~60 nm, and a wall of thickness of ~40 nm. The cyclic voltammogram of the composite electrode showed a pair of redox peaks characterizing the electrocatalytic reduction of H2O2. The entrapping of Au NPs on TiO2 NTs prevented aggregation and facilitated good electrical conductivity and electron transfer rate, thus generating a wide linear range, a low detection limit of ~104 nM, and high sensitivity of ~519 µA/mM, as well as excellent selectivity, reproducibility, repeatability, and stability over 60 days. Furthermore, excellent recovery and relative standard deviation (RSD) were achieved in real samples, which were tap water, milk, and Lactobacillus plantarum bacteria, thereby verifying the accuracy and potentiality of the developed nonenzymatic sensor.
format Article
author Kader, Md. Ashraful
Nina Suhaity, Azmi
Kafi, A. K. M.
Hossain, Md. Sanower
Jose, Rajan
Goh, Khang Wen
author_facet Kader, Md. Ashraful
Nina Suhaity, Azmi
Kafi, A. K. M.
Hossain, Md. Sanower
Jose, Rajan
Goh, Khang Wen
author_sort Kader, Md. Ashraful
title Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes
title_short Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes
title_full Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes
title_fullStr Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes
title_full_unstemmed Ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes
title_sort ultrasensitive nonenzymatic real-time hydrogen peroxide monitoring using gold nanoparticle-decorated titanium dioxide nanotube electrodes
publisher MDPI
publishDate 2023
url http://umpir.ump.edu.my/id/eprint/39948/1/biosensors-13-00671.pdf
http://umpir.ump.edu.my/id/eprint/39948/
https://doi.org/10.3390/bios13070671
https://doi.org/10.3390/bios13070671
_version_ 1822924069791596544
score 13.232389

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