Carbon Dot-Functionalized Solution-Gated Graphene Transistors for Highly Sensitive Detection of Cobalt(II) Ions Article Swipe

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Zhanpeng Ren , Jianying Wang , Chenglong Xue , Minghua Deng , Ziqin Li , Huibin Zhang , Cai Chen , Bing Xu , Xianbao Wang , Jinhua Li ·

YOU? · · 2023 · Open Access · · DOI: https://doi.org/10.3390/chemosensors11030192

A carbon dot-functionalized solution-gated graphene transistor (CD-SGGT) was designed and prepared via the modification of CDs on the gate of SGGT. The above CDs were hydrothermally synthesized using DL-thioctic acid and triethylenetramine as C, N and S sources. The average size of CDs was ~6.2 nm, and there were many amino and carboxyl groups on the CDs’ surfaces. The CDs was then used as a probe for preparation of CD-SGGT sensor for the cobalt(II) (Co2+) ions detection. The CD-SGGT sensor showed excellent sensitivity and high selectivity. Remarkably, the limit of detection (LOD) reached 10−19 M. The linear detection range was obtained from 10−19 to 10−15 M. Additionally, the CD-SGGT also showed fast response and good stability.

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Graphene Detection limit Cobalt Materials science Ion Carbon fibers Selectivity Transistor Linear range Electrode Nanotechnology Analytical Chemistry (journal) Chemistry Chromatography Physical chemistry Composite number Organic chemistry Catalysis Physics Quantum mechanics Composite material Voltage Metallurgy

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Type: article
Language: en
Landing Page: https://doi.org/10.3390/chemosensors11030192
PDF: https://www.mdpi.com/2227-9040/11/3/192/pdf?version=1678880790
OA Status: gold
Cited By: 10
References: 44
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DOI: https://doi.org/10.3390/chemosensors11030192

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Title: Carbon Dot-Functionalized Solution-Gated Graphene Transistors for Highly Sensitive Detection of Cobalt(II) Ions

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Publication year: 2023

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Publication date: 2023-03-15

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Authors: Zhanpeng Ren, Jianying Wang, Chenglong Xue, Minghua Deng, Ziqin Li, Huibin Zhang, Cai Chen, Bing Xu, Xianbao Wang, Jinhua Li

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Landing page: https://doi.org/10.3390/chemosensors11030192

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Concepts: Graphene, Detection limit, Cobalt, Materials science, Ion, Carbon fibers, Selectivity, Transistor, Linear range, Electrode, Nanotechnology, Analytical Chemistry (journal), Chemistry, Chromatography, Physical chemistry, Composite number, Organic chemistry, Catalysis, Physics, Quantum mechanics, Composite material, Voltage, Metallurgy

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Cited by: 10

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