Green synthesis of CoVS2-MOF@CMS nanocomposite electrode for sustainable approach towards eco-friendly energy storage and dopamine detection
Nimra Muzaffar, Muhammad Imran, Amir Muhammad Afzal, Muhammad Waqas Iqbal, Sohail Mumtaz, Asad Ur Rehman, Tahir Ejaz, Muhammad Zahir Iqbal, Tahani Mazyad Almutairi
Abstract
Dopamine, a crucial brain chemical belonging to the catecholamine and phenethylamine chemical families, plays a vital role in promoting a healthy and happy life. Irregular dopamine release has been linked to various neurological disorders and depressive conditions. Therefore, conducting real-time, in vivo monitoring of dopamine levels is essential to gain a comprehensive understanding of its physiological functions. In this research, the hydrothermal technique was employed to synthesize copper‑molybdenum sulfide (Cu 2 MoS 4 (CMS)). Further, we have reported the one-pot hydrothermal synthesis of CoVS 2 -MOF, using the bioactive chemical as fuel obtained from Euphorbia cognata Boiss. The specific capacity (Qs) of the sample CoVS 2 -MOF@CMS was calculated to be 820 Cg −1 at 3 mVs −1 , a value expressively higher than that of the reference samples. Furthermore, in the supercapattery device, an outstanding Qs of 300 Cg −1 was achieved at 1.5 Ag −1 , surpassing the previously observed values. The device demonstrated outstanding performance, including a coulombic efficiency of 89 %, a specific energy of 36.68 Whkg −1 , and a power density (P d ) of 2218.53 Wkg −1 . Moreover, the sensor typically yielded dopamine (DA) concentrations in human serum ranging from 100.8 % to 102.2 %. The utilization of the multifunctional CoVS 2 -MOF@CMS nanocomposite electrode material illustrates promising prospects for the fabrication of hybrid devices with applications in biomedical and energy harvesting fields.