Carbon Dots: A Multifunctional Nano‐Sized Giant Tool for the Detection Probe and Physical Reformation of NiMoO₄ in Solid‐State for Enriched Energy Storage Application

Abstract Designing low‐cost, effective and greener materials via a non‐sophisticated strategy is most important for future research. Here, they made a new dual endeavor using carbon dots (CDs) as an environment protection probe for selective detection of environmental toxins, followed by the solid‐state structural reformer to prepare NiMoO₄ (NM) via mechanochemical‐based solid grinding method. The prepared CDs, NM and NM‐CDs combination is examined through various techniques. The prepared CDs selectively detect Cr⁶⁺, Ru³⁺, and Doxycycline independently. Also, in this work, a groundbreaking strategy is found to prepare morphology‐tailored NM using CDs through a solid‐state grinding method without adding any other toxic solvents or reagents. The CDs‐induced NM‐CDs (15) look like a 2D nano‐sheet with enriched surface area compared to its bare NM. The fabricated electrode provides the highest capacitance value of 1947 F g⁻¹, almost three times grander than the bare 1D rod‐like electrode. Then, fabricated asymmetric supercapacitor NM‐CDs (15)//AC system delivers a high energy density of 43.9 Wh Kg⁻¹ at a power density of 684 W Kg⁻¹. Overall, a single CDs serve multiple roles in the environment and energy applications with a greener structure tailoring agent and a better booster for re energy storage properties.