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

Liu, Li, Zhao, Hongli, Shi, Libo, Lan, Minbo, Zhang, Hongwei and Yu, Chengzhong (2017) Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres. Electrochimica Acta, 227 69-76. doi:10.1016/j.electacta.2016.12.182

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Author Liu, Li
Zhao, Hongli
Shi, Libo
Lan, Minbo
Zhang, Hongwei
Yu, Chengzhong
Title Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres
Journal name Electrochimica Acta   Check publisher's open access policy
ISSN 0013-4686
1873-3859
Publication date 2017-02-10
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.electacta.2016.12.182
Open Access Status File (Author Post-print)
Volume 227
Start page 69
End page 76
Total pages 8
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Subject 1500 Chemical Engineering
1603 Electrochemistry
Abstract In this work, a highly sensitive enzyme- and metal-free electrochemical method for superoxide anion (O[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 O[rad], N-HMCS/SPCE exhibited a high sensitivity of 1.49 μA cm μM, 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 O[rad].
Formatted abstract
In this work, a highly sensitive enzyme- and metal-free electrochemical method for superoxide anion (O2•−) 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•−, 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•−.
Keyword Electrochemical sensor
Highly sensitive
Nitrogen doped hollow mesoporous carbon spheres
Superoxide anion
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 16520710800
21305044
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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