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Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination

Wei Zhang Orcid Logo, Baoping Jia, Hiroaki Furumai

Scientific Reports, Volume: 8, Issue: 1, Start page: 10686

Swansea University Author: Wei Zhang Orcid Logo

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DOI (Published version): 10.1038/s41598-018-28959-w

Abstract

In this work, we fabricated a novel graphene film composite biosensor for microcystin-LR detection as an alternative to time-consuming, expensive, non-portable and often skills-demanding conventional methods of analysis involved in water quality monitoring and assessment. Excellent linear correlatio...

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Published in: Scientific Reports
ISSN: 2045-2322
Published: Springer Science and Business Media LLC 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa44272
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first_indexed 2018-09-18T12:57:28Z
last_indexed 2020-09-22T03:05:26Z
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spelling 2020-09-21T14:57:00.5327719 v2 44272 2018-09-18 Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination 3ddabbb54b2cfa2ea10f590ea7da6520 0000-0003-3129-2918 Wei Zhang Wei Zhang true false 2018-09-18 CHEG In this work, we fabricated a novel graphene film composite biosensor for microcystin-LR detection as an alternative to time-consuming, expensive, non-portable and often skills-demanding conventional methods of analysis involved in water quality monitoring and assessment. Excellent linear correlation (R2 = 0.99) of the electron-transfer resistance was achieved over a wide range of microcystin-LR (MC-LR) concentration, i.e. 0.005–10 μg/L. As-prepared graphene film composite biosensors can specifically detect MC-LR with remarkable sensitivity and detection limit (2.3 ng/L) much lower than the World Health Organization (WHO) provisional guideline limit of microcystin-LR concentration (i.e. 1 μg/L) in different water sources. Their great potential can be attributed to large active surface area of graphene film and efficient charge transfer process enabled by their high conductivity. Developed graphene film composite biosensors were also successfully applied to determination of MC-LR in several environmental water samples with high detection recovery, which offers a promising possibility of large-scale manufacture of sensor tips due to their macroscopic free-standing nature, the scalable fabrication route and easily tunable size. Journal Article Scientific Reports 8 1 10686 Springer Science and Business Media LLC 2045-2322 1 12 2018 2018-12-01 10.1038/s41598-018-28959-w COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2020-09-21T14:57:00.5327719 2018-09-18T12:05:50.8158867 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Wei Zhang 0000-0003-3129-2918 1 Baoping Jia 2 Hiroaki Furumai 3 0044272-08102018151454.pdf zhang2018(8).pdf 2018-10-08T15:14:54.5030000 Output 2744486 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution 4.0 International License (CC-BY). true eng http://creativecommons.org/licenses/by/4.0/
title Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination
spellingShingle Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination
Wei Zhang
title_short Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination
title_full Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination
title_fullStr Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination
title_full_unstemmed Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination
title_sort Fabrication of graphene film composite electrochemical biosensor as a pre-screening algal toxin detection tool in the event of water contamination
author_id_str_mv 3ddabbb54b2cfa2ea10f590ea7da6520
author_id_fullname_str_mv 3ddabbb54b2cfa2ea10f590ea7da6520_***_Wei Zhang
author Wei Zhang
author2 Wei Zhang
Baoping Jia
Hiroaki Furumai
format Journal article
container_title Scientific Reports
container_volume 8
container_issue 1
container_start_page 10686
publishDate 2018
institution Swansea University
issn 2045-2322
doi_str_mv 10.1038/s41598-018-28959-w
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 1
active_str 0
description In this work, we fabricated a novel graphene film composite biosensor for microcystin-LR detection as an alternative to time-consuming, expensive, non-portable and often skills-demanding conventional methods of analysis involved in water quality monitoring and assessment. Excellent linear correlation (R2 = 0.99) of the electron-transfer resistance was achieved over a wide range of microcystin-LR (MC-LR) concentration, i.e. 0.005–10 μg/L. As-prepared graphene film composite biosensors can specifically detect MC-LR with remarkable sensitivity and detection limit (2.3 ng/L) much lower than the World Health Organization (WHO) provisional guideline limit of microcystin-LR concentration (i.e. 1 μg/L) in different water sources. Their great potential can be attributed to large active surface area of graphene film and efficient charge transfer process enabled by their high conductivity. Developed graphene film composite biosensors were also successfully applied to determination of MC-LR in several environmental water samples with high detection recovery, which offers a promising possibility of large-scale manufacture of sensor tips due to their macroscopic free-standing nature, the scalable fabrication route and easily tunable size.
published_date 2018-12-01T03:55:30Z
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score 10.997866

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