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Nanoflowers on Microporous Graphene Electrodes as a Highly Sensitive and Low-Cost As(III) Electrochemical Sensor for Water Quality Monitoring
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Document Title
Nanoflowers on Microporous Graphene Electrodes as a Highly Sensitive and Low-Cost As(III) Electrochemical Sensor for Water Quality Monitoring
Author
Kosuvun M. Danvirutai P. Hormdee D. Chaosakul A. Tanboonchuy V. Siritaratiwat A. Anutrakulchai S. Sharma A. Tuantranont A. Srichan C.
Affiliations
Faculty of Engineering Khon Kaen University Khon Kaen 40002 Thailand; Research and Development Division T. Robotics Co. Ltd Khon Kaen 40000 Thailand; Research Center for Environmental and Hazardous Substance Management (EHSM) Khon Kaen University Khon Kaen 40002 Thailand; Faculty of Medicine Khon Kaen University Khon Kaen 40002 Thailand; Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET) Khon Kaen University Khon Kaen 40002 Thailand; Graphene and Printed Electronics for Dual-Use Applications Research Division (GPERD) National Science and Technology Development Agency (NSTDA) Pathum Thani12120 Thailand
Type
Article
Source Title
Sensors
ISSN
14248220
Year
2023
Volume
23
Issue
6
Open Access
All Open Access Gold Green
Publisher
MDPI
DOI
10.3390/s23063099
Abstract
In this work we report a low-cost and highly sensitive electrochemical sensor for detecting As(III) in water. The sensor uses a 3D microporous graphene electrode with nanoflowers which enriches the reactive surface area and thus enhances its sensitivity. The detection range achieved was 1� ppb meeting the US-EPA cutoff criteria of 10 ppb. The sensor works by trapping As(III) ions using the interlayer dipole between Ni and graphene reducing As(III) and transferring electrons to the nanoflowers. The nanoflowers then exchange charges with the graphene layer producing a measurable current. Interference by other ions such as Pb(II) and Cd(II) was found to be negligible. The proposed method has potential for use as a portable field sensor for monitoring water quality to control hazardous As(III) in human life. ? 2023 by the authors.
Keyword
arsenic | electrochemical sensing | Graphene | microporous graphene | nanoflowers
License
CC BY
Rights
Authors
Publication Source
WOS