Synthesis and Electrodeposition Process
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A novel hydrothermal procedure was followed for the successful synthesis of Chalcopyrite nanoparticles. The products were annealed and subjected to the preparation of nanocomposites
Proposed nanocomposite based on chalcopyrite nanostructures and hexagonal boron nitrides nanosheets was fabricated through a one-pot hydrothermal process. The prepared products were also subjected to annealing process
The sensing platform was fostered on the ITO slide by the process of electrophoretic deposition. The nanocomposite was uniformly dispersed in acetonitrile and was deposited on hydrolysed ITO slides. At the end, a uniform coating of 1 cm2 was successfully fostered on the slides.
The electrochemical setup which was used to evaluate the sensing and electrochemical properties of the proposed nanocomposite. Here the reference electrode and counter electrode consisted of Ag/AgCl and Platinum wire respectively. And the nanocomposite coated ITO slide was used as the working electrode.
Material Characterization
Material Characterization
Scanning electron microscopy studies conducted at 20 micrometres demonstrates (a) Bulk h-BN to be in the form of large agglomerations, (b) The synthesized Chalcopyrite nanoparticles to be in the form of flowers with smooth surfaces, and (c) Hydrothermally synthesized nanocomposite to be in the form of chalcopyrite nanoparticles decorated on the h-BN nanosheets
The Tuac plot analysis of (a) Bulk h-BN, (b) CuFeS2 (chalcopyrite), and the (c) nanocomposites illustrates that there has been significant change in the optical band gap of h-BN when it was combined with chalcopyrite. Evidently, the lowered band gap indicates increased electroactivity.
The FT-IR spectra conducted from 400 cm-1 to 4000 cm-1 indicates the successful phase and bond formation of the fabricated products. The presence of functional groups at the specified wavenumbers demonstrates the fruitful synthesis.
Electrochemical Studies
Linear variation of peak voltage and current with root of scan rates indicates that the reaction occurring at the vicinity of the biosensing platform (microelectrodes) is intrinsic in nature. This implies that the proposed nanocomposite is highly reliable for the sensing of targeted biomarkers of the inoperable disease.
Scan rate studies employed on the Antigen fostered nanocomposite coated ITO slides over the scan rates 30 mVs to 150 mVs. It depicts that the sensing platform is highly stable and reproducible over the large variations of scans. It also demonstrates that the processes occurring are Quasi neutral in nature.
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