Akademik Veri Yönetim Sistemi
JOURNAL OF ELECTRONIC MATERIALS, cilt.54, sa.9, ss.7244-7253, 2025 (SCI-Expanded, Scopus)
This study focuses on the preparation and characterization of catalysts composed of iridium (Ir) and zirconium (Zr) supported on carbon nanotubes (CNTs) for use in a sensitive electrochemical sensor. The catalysts were synthesized using the NaBH4 reduction method. The characterization of the Ir-Zr/CNT catalysts was performed using scanning electron microscopy and energy dispersive x-ray spectroscopy, as well as x-ray diffraction techniques. The Ir-Zr/CNT catalyst was then used to modify a glassy carbon electrode (GCE) to develop an electrochemical sensor for the detection of L-Tryptophan (L-Trp). The electrochemical performance of the sensor was evaluated using cyclic voltammetry, linear sweep voltammetry differential pulse voltammetry, and electrochemical impedance spectroscopy. The sensor, Ir-Zr/CNT-GCE, demonstrated excellent performance, including a linear response to L-Trp in the concentration range of 20-500 mu M. The sensor exhibited a current sensitivity of 0.0003 mA/mu M cm2 and a detection limit of 0.06 mu M, with a signal-to-noise ratio (S/N) of 3, indicating high sensitivity and effectiveness for L-Trp detection.