Journal
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
Volume 45, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colcom.2021.100523
Keywords
Electrochemical sensor; Biomolecules; Toxic dyes; CuBi2O4/rGO; Photocatalyst
Funding
- Research Centre, SSN College of Engineering
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This study describes a novel low-cost electrochemical sensor using copper bismuthate microspheres embedded in reduced graphene oxide for the detection of L-Tyrosine and degradation of methylene blue. The sensor showed good performance in detecting biomolecules and removing organic dyes, suggesting potential applications in Parkinson's disease treatment and industrial waste treatment.
In this work, a novel low-cost electrochemical sensor involving copper bismuthate (CuBi2O4) microspheres embedded in reduced graphene oxide (rGO) is described for electrochemical determination of L-Tyrosine (L-Tyr) and photocatalytic degradation of methylene blue (MB) in Parkinson's disease treatment and industrial waste treatment, respectively. The rGO improves the electrocatalytic behaviours of CuBi2O4 and enhances the sensing performance of L-Tyr. At the optimized conditions, the nanocomposites show good long-term stability, reproducibility, and fast response with nanomolar detection (6.9 nM) at wide linear ranges of 83-1234 x 10(-9) M (R-2 = 0.9964) towards L-Tyr. Further, the photocatalytic dye degradation within 30 min was studied in the presence of CuBi2O4/rGO catalysts. The synthesized CuBi2O4/rGO composite enhances the dye degradation rate and shows good sensitivity to detect the L-Tyrosine compared to CuBi2O4. The results suggest that the self-assembled three-dimensional CuBi2O4/rGO microsphere is an excellent material for the detection of biomolecules and the removal of organic dyes.
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