Highly Selective Nanostructured Electrochemical Sensor Utilizing Densely Packed Ultrathin Gold Nanowires Film

Esma Dervisevic; Muamer Dervisevic; Yan Wang; Luis F. Malaver-Ortega; Wenlong Cheng; Kellie L. Tuck; Nicolas H. Voelcker; Victor J. Cadarso

doi:10.1002/elan.202060071

Highly Selective Nanostructured Electrochemical Sensor Utilizing Densely Packed Ultrathin Gold Nanowires Film

Esma Dervisevic, Muamer Dervisevic, Yan Wang, Luis F. Malaver-Ortega, Wenlong Cheng, Kellie L. Tuck, Nicolas H. Voelcker, Victor J. Cadarso^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The number of studies conducted about nonenzymatic electrochemical sensors has increased in recent years due to the development of more stable and robust electrodes using noble metals. One of the key aspects for achieving high sensing performance including detection limit and sensitivity is the design of electrode architecture. Herein, we report a new electrochemical sensing platform featuring ultrathin standing gold nanowires (AuNWs) for nonenzymatic detection of hydrogen peroxide (H₂O₂). The use of AuNWs resulted in an increased electron transfer efficiency due to the higher active surface area compared to traditional gold film electrodes. This sensor demonstrates good selectivity, reproducibility, a linear range up to 49.5 mM of H₂O₂ with a sensitivity of 0.185±0.003 mAmM⁻¹cm⁻² and a limit of detection of 111 μM. The biological relevance of this sensor was tested in cell culture media to illustrate the performance of the proposed sensing electrode in complex biological media.

Original language	English
Pages (from-to)	1850-1858
Number of pages	9
Journal	Electroanalysis
Volume	32
Issue number	8
DOIs	https://doi.org/10.1002/elan.202060071
State	Published - 1 Aug 2020
Externally published	Yes

Keywords

hydrogen peroxide
nonenzymatic electrochemical sensor.
reactive oxygen species
standing gold nanowires

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10.1002/elan.202060071

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title = "Highly Selective Nanostructured Electrochemical Sensor Utilizing Densely Packed Ultrathin Gold Nanowires Film",

abstract = "The number of studies conducted about nonenzymatic electrochemical sensors has increased in recent years due to the development of more stable and robust electrodes using noble metals. One of the key aspects for achieving high sensing performance including detection limit and sensitivity is the design of electrode architecture. Herein, we report a new electrochemical sensing platform featuring ultrathin standing gold nanowires (AuNWs) for nonenzymatic detection of hydrogen peroxide (H2O2). The use of AuNWs resulted in an increased electron transfer efficiency due to the higher active surface area compared to traditional gold film electrodes. This sensor demonstrates good selectivity, reproducibility, a linear range up to 49.5 mM of H2O2 with a sensitivity of 0.185±0.003 mAmM−1cm−2 and a limit of detection of 111 μM. The biological relevance of this sensor was tested in cell culture media to illustrate the performance of the proposed sensing electrode in complex biological media.",

keywords = "hydrogen peroxide, nonenzymatic electrochemical sensor., reactive oxygen species, standing gold nanowires",

author = "Esma Dervisevic and Muamer Dervisevic and Yan Wang and Malaver-Ortega, {Luis F.} and Wenlong Cheng and Tuck, {Kellie L.} and Voelcker, {Nicolas H.} and Cadarso, {Victor J.}",

note = "Publisher Copyright: {\textcopyright} 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2020",

month = aug,

day = "1",

doi = "10.1002/elan.202060071",

language = "英语",

volume = "32",

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AU - Dervisevic, Esma

AU - Dervisevic, Muamer

AU - Wang, Yan

AU - Malaver-Ortega, Luis F.

AU - Cheng, Wenlong

AU - Tuck, Kellie L.

AU - Voelcker, Nicolas H.

AU - Cadarso, Victor J.

PY - 2020/8/1

Y1 - 2020/8/1

N2 - The number of studies conducted about nonenzymatic electrochemical sensors has increased in recent years due to the development of more stable and robust electrodes using noble metals. One of the key aspects for achieving high sensing performance including detection limit and sensitivity is the design of electrode architecture. Herein, we report a new electrochemical sensing platform featuring ultrathin standing gold nanowires (AuNWs) for nonenzymatic detection of hydrogen peroxide (H2O2). The use of AuNWs resulted in an increased electron transfer efficiency due to the higher active surface area compared to traditional gold film electrodes. This sensor demonstrates good selectivity, reproducibility, a linear range up to 49.5 mM of H2O2 with a sensitivity of 0.185±0.003 mAmM−1cm−2 and a limit of detection of 111 μM. The biological relevance of this sensor was tested in cell culture media to illustrate the performance of the proposed sensing electrode in complex biological media.

AB - The number of studies conducted about nonenzymatic electrochemical sensors has increased in recent years due to the development of more stable and robust electrodes using noble metals. One of the key aspects for achieving high sensing performance including detection limit and sensitivity is the design of electrode architecture. Herein, we report a new electrochemical sensing platform featuring ultrathin standing gold nanowires (AuNWs) for nonenzymatic detection of hydrogen peroxide (H2O2). The use of AuNWs resulted in an increased electron transfer efficiency due to the higher active surface area compared to traditional gold film electrodes. This sensor demonstrates good selectivity, reproducibility, a linear range up to 49.5 mM of H2O2 with a sensitivity of 0.185±0.003 mAmM−1cm−2 and a limit of detection of 111 μM. The biological relevance of this sensor was tested in cell culture media to illustrate the performance of the proposed sensing electrode in complex biological media.

KW - hydrogen peroxide

KW - nonenzymatic electrochemical sensor.

KW - reactive oxygen species

KW - standing gold nanowires

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DO - 10.1002/elan.202060071

M3 - 文章

AN - SCOPUS:85084791927

SN - 1040-0397

VL - 32

SP - 1850

EP - 1858

JO - Electroanalysis

JF - Electroanalysis

IS - 8

ER -

Highly Selective Nanostructured Electrochemical Sensor Utilizing Densely Packed Ultrathin Gold Nanowires Film

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Keywords

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