Journal
BIOSENSORS-BASEL
Volume 13, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/bios13070725
Keywords
bisphenol A; molecularly imprinting; nanocomposite; food analysis
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A molecular imprinted electrochemical sensor based on boron-functionalized graphitic carbon nitride (B-g-C3N4) and graphene quantum dots (GQDs) was developed for selective determination of bisphenol A (BPA). The sensor exhibited a linear range of 1.0 x 10(-11)-1.0 x 10(-9) M and a low detection limit (LOD, 3.0 x 10(-12) M). The BPA-imprinted polymer on GQDs/B-g-C3N4 nanocomposite also showed good stability, repeatability, and selectivity in food samples.
A molecular imprinted electrochemical sensor based on boron-functionalized graphitic carbon nitride (B-g-C3N4) and graphene quantum dots (GQDs) was presented for selective determination of bisphenol A (BPA). In particular, by combining the selectivity and high stability properties, which are the most important advantages of molecular imprinted polymers, and the highly sensitive properties of GQDs/B-g-C3N4 nanocomposite, a highly selective and sensitive analytical method was developed for BPA analysis. Firstly, GQDs/B-g-C3N4 nanocomposite was characterized by using microscopic, spectroscopic, and electrochemical techniques. This novel molecular imprinted electrochemical sensor for BPA detection demonstrated a linearity of 1.0 x 10(-11)-1.0 x 10(-9) M and a low detection limit (LOD, 3.0 x 10(-12) M). BPA-imprinted polymer on GQDs/B-g-C3N4 nanocomposite also showed good stability, repeatability and selectivity in food samples.
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