Journal
SENSORS
Volume 20, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/s20174880
Keywords
differential pulse voltammetry; dopamine; CeO2; siloxene
Funding
- National Natural Science Foundation of China [51950410598]
- Shenzhen Science and Technology Innovation Committee [JCYJ20170412154426330]
- Guangdong Natural Science Funds [2016A030306042, 2018A050506001]
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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 CeO(2)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 CeO(2)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 mu M, with a linear range from 0.292 mu M to 7.8 mu M. This work provides a novel scheme for designing the CeO(2)material with siloxene for excellent dopamine sensors, which could be extended towards other biosensing applications.
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