Releasing Newfangled Character of CDs: A Toxins Detecting Probe and Defect Crafter in CoMoO4 via Solvent-Free Synthetic Approach for Empowered Energy Storage Application

It has been about 20 years since the discovery of Carbon dots (CDs), but new characteristics of CDs are knotted daily. Herein, we offer an alternative strategy using pollutant-detecting CDs as an oxygen vacant crafter in CoMoO4 (CM) cooked through a solid-state grinding synthesis process, and the materials were employed as high-performance supercapacitor applications. The functional moieties-rich CDs and their modified CM materials are confirmed with various sophisticated analytical methods. The core property of CDs fluorescence was used to detect Cr6+ ions and Doxycycline selectively in the aqueous medium against multiple interferences with a very good limit of detection values. Next, CoMoO4 with tuneable oxygen vacancy was prepared via a solvent-free grinding method with well-functionalized CDs without any solvents. Adding CDs into the solvent-free synthesis process of CoMoO4 effectively modulates the electronic, surface and structural properties, greatly enhancing the electrochemical performance. The modified CM-CDs (3) electrode exposes the specific capacitance of 781 F g-1 at the applied current density of 1 A g-1, which was two times greater than the pristine electrode and also retains 95.2 % of specific capacitance after successful completion of 2000 cycles. The asymmetric device was fabricated with CM-CDs (3) // AC, which results higher energy density of 34.75 Wh/kg at the power density of 749.1 W/kg and also accomplishes long cyclic stability. This research findings pave the way to develop an alternate strategy to improve conventional material synthesis through a non-conventional synthesis strategy using CDs along solvent-free preparation method.