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Open AccessArticle

CeO2-Based Two-Dimensional Layered Nanocomposites Derived from a Metal–Organic Framework for Selective Electrochemical Dopamine Sensors

1
School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
2
SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
3
Engineering Research Center of Integrated Circuits for Next-Generation Communications, Ministry of Education, Shenzhen 518055, China
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(17), 4880; https://doi.org/10.3390/s20174880
Received: 12 July 2020 / Revised: 14 August 2020 / Accepted: 24 August 2020 / Published: 28 August 2020
(This article belongs to the Special Issue Nanomaterials Based Sensors and the Application)
In this work, we demonstrate the incorporation of two-dimensional (2D) layered materials into a metal–organic framework (MOF) derived from one-dimensional (1D) cerium oxide (CeO2) for the electrochemical detection of dopamine. Ce-MOF was employed as a sacrificial template for preparing CeO2 with 2D materials by the pyrolysis process. The influence of the pyrolysis temperature was studied to achieve a better crystal structure of CeO2. Siloxene improved the dopamine sensing performance of CeO2 compared with graphitic carbon nitride (g-C3N4) due to the basal plane surface oxygen and hydroxyl groups of 2D siloxene. Under optimal conditions, the fabricated CeO2/siloxene electrode exhibited a detection limit of 0.292 μM, with a linear range from 0.292 μM to 7.8 μM. This work provides a novel scheme for designing the CeO2 material with siloxene for excellent dopamine sensors, which could be extended towards other biosensing applications. View Full-Text
Keywords: differential pulse voltammetry; dopamine; CeO2; siloxene differential pulse voltammetry; dopamine; CeO2; siloxene
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MDPI and ACS Style

Ge, C.; Ramachandran, R.; Wang, F. CeO2-Based Two-Dimensional Layered Nanocomposites Derived from a Metal–Organic Framework for Selective Electrochemical Dopamine Sensors. Sensors 2020, 20, 4880.

AMA Style

Ge C, Ramachandran R, Wang F. CeO2-Based Two-Dimensional Layered Nanocomposites Derived from a Metal–Organic Framework for Selective Electrochemical Dopamine Sensors. Sensors. 2020; 20(17):4880.

Chicago/Turabian Style

Ge, Chengjie; Ramachandran, Rajendran; Wang, Fei. 2020. "CeO2-Based Two-Dimensional Layered Nanocomposites Derived from a Metal–Organic Framework for Selective Electrochemical Dopamine Sensors" Sensors 20, no. 17: 4880.

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