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Sensors
Volume 21
Issue 5
10.3390/s21051663
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Communication

Performance Comparison of Solid Lead Ion Electrodes with Different Carbon-Based Nanomaterials as Electron-Ion Exchangers

by
Lei Zhang
*,
Zhengying Wei
,
Pengcheng Liu
,
Haoran Wei
and
Denglong Ma
State Key Lab for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an 710049, China
*
Author to whom correspondence should be addressed.
Sensors 2021, 21(5), 1663; https://doi.org/10.3390/s21051663
Submission received: 16 January 2021 / Revised: 14 February 2021 / Accepted: 22 February 2021 / Published: 28 February 2021
(This article belongs to the Section Sensor Materials)
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Abstract

Carbon-based nanomaterials with carboxylation or chemical modification are widely used as electron-ion exchangers of solid electrodes. For reducing the complexity and dangerousness of the intermediate layer preparation, different original carbon-based nanomaterials are dispersed in deionized water. They are applied in the fabrication of Pb2+-selective electrodes. Because the contact angle of graphene reached 132.5°, the Pb2+-selective electrode of graphene used as an electron-ion exchanger showed excellent performance with a low detection limit of 3.4 × 10−8 M and a fast average response time of 42.6 s. The Nernstian response slope could reach 26.8 mV/decade, and the lifetime lasted for a month. Therefore, graphene suspension without any treatment can be used as the intermediate layer of solid-state electrodes, providing a reference for the preparation of other ion-selective electrodes.
Keywords: Pb2+ selective electrode; graphene; multi-walled carbon nanotube; fullerene Pb2+ selective electrode; graphene; multi-walled carbon nanotube; fullerene

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MDPI and ACS Style

Zhang, L.; Wei, Z.; Liu, P.; Wei, H.; Ma, D. Performance Comparison of Solid Lead Ion Electrodes with Different Carbon-Based Nanomaterials as Electron-Ion Exchangers. Sensors 2021, 21, 1663. https://doi.org/10.3390/s21051663

AMA Style

Zhang L, Wei Z, Liu P, Wei H, Ma D. Performance Comparison of Solid Lead Ion Electrodes with Different Carbon-Based Nanomaterials as Electron-Ion Exchangers. Sensors. 2021; 21(5):1663. https://doi.org/10.3390/s21051663

Chicago/Turabian Style

Zhang, Lei, Zhengying Wei, Pengcheng Liu, Haoran Wei, and Denglong Ma. 2021. "Performance Comparison of Solid Lead Ion Electrodes with Different Carbon-Based Nanomaterials as Electron-Ion Exchangers" Sensors 21, no. 5: 1663. https://doi.org/10.3390/s21051663

APA Style

Zhang, L., Wei, Z., Liu, P., Wei, H., & Ma, D. (2021). Performance Comparison of Solid Lead Ion Electrodes with Different Carbon-Based Nanomaterials as Electron-Ion Exchangers. Sensors, 21(5), 1663. https://doi.org/10.3390/s21051663

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