FeS₂ nanosheets–H₂O₂–NaHCO₃ chemiluminescence method for procaine hydrochloride determination

Abstract

FeS2 nanosheets (NSs) were produced and exploited as a new catalyst for a chemiluminescence (CL) reaction. The characterization of FeS2 NSs was performed using spectroscopic methods. In this regard, transmission electron microscopy images showed that FeS2 NSs have a length of ~0.5–1 μm. The direct optical band gap energy of FeS2 NSs was found to be 3.45 eV. Prepared FeS2 NSs were used to catalyze the NaHCO3–H2O2 CL reaction. It was found that procaine hydrochloride (PCH) could reduce the intensity of the FeS2 NSs–NaHCO3–H2O2 CL reaction so, with increasing PCH concentrations, the intensity of light emission decreased. Therefore, a simple and sensitive method was introduced to measure PCH with a linear range expanded from 1.00 × 10−6 to 1.00 × 10−3 mol L−1 and an 8.32 × 10−7 mol L−1 limit of detection. Studies related to the effect of foreign species and reaction mechanisms were performed. The application of the approach was verified by quantifying the PCH in the injection.

FeS2 nanosheets–luminol–O2 chemiluminescence method for determination of venlafaxine hydrochloride, imipramine hydrochloride, and cefazolin sodium

“…In our previous study, we successfully used FeS 2 nanosheets (NS) to catalyze the NaHCO 3 -H 2 O 2 CL reaction, representing the inaugural application of these NSs in such a role [37]. The ability of this catalyst to enhance the intensity of the CL reaction and its subsequent utilization for the assessment of procaine hydrochloride [37] have motivated us to further explore their effects on an alternative CL reaction, namely the luminol-O 2 reaction. The experimental results showed a considerable increase in the light emission intensity produced by the luminol-O 2 CL reaction through the integration of FeS 2 NSs.…”