A Novel Synthesis of ZnNb₂O₆ Nanoparticles via Combustion Method: Supercapacitor and Photocatalytic Properties

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In light of the current study's demonstration of the synthesis of Zn doped niobium metal oxide a low‐cost approach is provided for the synthesis of ZnNb 2 O 6 nanoparticles. Using the urea and oxalyl dihydrazide (ODH) as fuel and complexing agent, ZnNb 2 O 6 NPs are synthesized via the solution combustion process. The X‐ray diffraction (XRD) patterns reveal that ZnNb 2 O 6 has a columbite‐orthorhombic structure. The field emisssion‐scanning electron microscopy (FE‐SEM) micrographs revealed the presence of uniform and spherically shaped morphology for ZnNb 2 O 6 . The role of ZnNb 2 O 6 in the photocatalytic degradation of fuchsin acid dye is investigated under UV‐rays. The remarkable photocatalytic degradation activity of the material is demonstrated with 90% degradation rate. The fabricated electrode is used for the electrochemical analysis of the resultant material. The capacitance of 223 and 198 Fg −1 at a scan rate of 5 Ag −1 , respectively, are measured in a 3‐electrode using the chemically generated ZnNb 2 O 6 , as per the Galvanostatic charge discharge (GCD) experiment. Furthermore, it exhibited excellent cycling stability, maintaining over 85% of its initial capacitance even after 2000 cycles. The goal of this research is to develop a solution combustion method for synthesizing ZnNb 2 O 6 NPs from urea and ODH so that it may be more effectively tested for electrochemical, sensing, and photocatalytic uses.