Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres

Li Liu; Hongli Zhao; Libo Shi; Minbo Lan; Hongwei Zhang; Chengzhong Yu

doi:10.1016/j.electacta.2016.12.182

Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres

Li Liu
, Hongli Zhao^*
, Libo Shi
, Minbo Lan
, Hongwei Zhang
, Chengzhong Yu

^*Corresponding author for this work

East China University of Science and Technology
University of Queensland

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

60 Scopus citations

Abstract

In this work, a highly sensitive enzyme- and metal-free electrochemical method for superoxide anion (O₂[rad]⁻) detection has been developed by employing screen-printed carbon electrodes (SPCE) modified by nitrogen doped hollow mesoporous carbon spheres (N-HMCS). For comparison, solid carbon spheres (SCS) and hollow mesoporous carbon spheres (HMCS) were also synthesized to fabricate the modified SPCE. Compared with SCS/SPCE and HMCS/SPCE, N-HMCS/SPCE displayed a higher electrochemical performance. When applied for electrochemical detection of O₂[rad]⁻, N-HMCS/SPCE exhibited a high sensitivity of 1.49 μA cm⁻² μM⁻¹, better than SCS/SPCE and HMCS/SPCE and many of enzyme- or metal-based superoxide anion sensors. N-HMCS is expected to become a new generation of sensing materials for electrochemical analysis of O₂[rad]⁻.

Original language	English
Pages (from-to)	69-76
Number of pages	8
Journal	Electrochimica Acta
Volume	227
DOIs	https://doi.org/10.1016/j.electacta.2016.12.182
State	Published - 10 Feb 2017
Externally published	Yes

Keywords

Nitrogen doped hollow mesoporous carbon spheres
electrochemical sensor
highly sensitive
superoxide anion

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10.1016/j.electacta.2016.12.182

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@article{032035ac5715438aa471f1b584c4122a,

title = "Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres",

abstract = "In this work, a highly sensitive enzyme- and metal-free electrochemical method for superoxide anion (O2[rad]−) detection has been developed by employing screen-printed carbon electrodes (SPCE) modified by nitrogen doped hollow mesoporous carbon spheres (N-HMCS). For comparison, solid carbon spheres (SCS) and hollow mesoporous carbon spheres (HMCS) were also synthesized to fabricate the modified SPCE. Compared with SCS/SPCE and HMCS/SPCE, N-HMCS/SPCE displayed a higher electrochemical performance. When applied for electrochemical detection of O2[rad]−, N-HMCS/SPCE exhibited a high sensitivity of 1.49 μA cm−2 μM−1, better than SCS/SPCE and HMCS/SPCE and many of enzyme- or metal-based superoxide anion sensors. N-HMCS is expected to become a new generation of sensing materials for electrochemical analysis of O2[rad]−.",

keywords = "Nitrogen doped hollow mesoporous carbon spheres, electrochemical sensor, highly sensitive, superoxide anion",

author = "Li Liu and Hongli Zhao and Libo Shi and Minbo Lan and Hongwei Zhang and Chengzhong Yu",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2017",

month = feb,

day = "10",

doi = "10.1016/j.electacta.2016.12.182",

language = "英语",

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journal = "Electrochimica Acta",

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TY - JOUR

T1 - Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres

AU - Liu, Li

AU - Zhao, Hongli

AU - Shi, Libo

AU - Lan, Minbo

AU - Zhang, Hongwei

AU - Yu, Chengzhong

PY - 2017/2/10

Y1 - 2017/2/10

N2 - In this work, a highly sensitive enzyme- and metal-free electrochemical method for superoxide anion (O2[rad]−) detection has been developed by employing screen-printed carbon electrodes (SPCE) modified by nitrogen doped hollow mesoporous carbon spheres (N-HMCS). For comparison, solid carbon spheres (SCS) and hollow mesoporous carbon spheres (HMCS) were also synthesized to fabricate the modified SPCE. Compared with SCS/SPCE and HMCS/SPCE, N-HMCS/SPCE displayed a higher electrochemical performance. When applied for electrochemical detection of O2[rad]−, N-HMCS/SPCE exhibited a high sensitivity of 1.49 μA cm−2 μM−1, better than SCS/SPCE and HMCS/SPCE and many of enzyme- or metal-based superoxide anion sensors. N-HMCS is expected to become a new generation of sensing materials for electrochemical analysis of O2[rad]−.

AB - In this work, a highly sensitive enzyme- and metal-free electrochemical method for superoxide anion (O2[rad]−) detection has been developed by employing screen-printed carbon electrodes (SPCE) modified by nitrogen doped hollow mesoporous carbon spheres (N-HMCS). For comparison, solid carbon spheres (SCS) and hollow mesoporous carbon spheres (HMCS) were also synthesized to fabricate the modified SPCE. Compared with SCS/SPCE and HMCS/SPCE, N-HMCS/SPCE displayed a higher electrochemical performance. When applied for electrochemical detection of O2[rad]−, N-HMCS/SPCE exhibited a high sensitivity of 1.49 μA cm−2 μM−1, better than SCS/SPCE and HMCS/SPCE and many of enzyme- or metal-based superoxide anion sensors. N-HMCS is expected to become a new generation of sensing materials for electrochemical analysis of O2[rad]−.

KW - Nitrogen doped hollow mesoporous carbon spheres

KW - electrochemical sensor

KW - highly sensitive

KW - superoxide anion

UR - https://www.scopus.com/pages/publications/85008413145

U2 - 10.1016/j.electacta.2016.12.182

DO - 10.1016/j.electacta.2016.12.182

M3 - 文章

AN - SCOPUS:85008413145

SN - 0013-4686

VL - 227

SP - 69

EP - 76

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres

Abstract

Keywords

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