Abstract
In the present work, synthesis of bimetallic copper zinc tungstate (CuZnWO4) nanoparticles with reduced graphene oxide (CuZnWO4/rGO) via one-step hydrothermal technique was attempted. The synthesized CuZnWO4/rGO composite are characterized by Fourier transform infrared spectroscopy (FTIR), Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–Vis diffuse reflectance spectroscopy (UV DRS) and Photoluminescence (PL). The photocatalytic performance is examined by the degradation of methylene blue (MB) dye under visible light irradiation. The MB dye is almost 73% degraded within 80 min. Further, the electrochemical performance of hybrid CuZnWO4/rGO composite showed the specific capacity (SC) of 480 F/g at 4 A/g in 6 M KOH electrolyte with excellent cyclability conserving a capacitance retention of 127% after 5000 cycles due to increase diffusion of electrolyte ions to the electrode materials. These results support the hybrid CuZnWO4/rGO composite as an appropriate electrode material for high-performance SCs electrode and an auspicious catalyst for the degradation of dye (organic) contaminants in aqueous media.
Highlights
In the 21st century, the manhood met massive challenges in energy crisis and ecological pollution
2.2 Synthesis of CuZnWO4 and CuZnWO4-reduced graphene oxide (rGO) Composite Reduced graphene oxide was synthesized by hummers method and followed by reductionusing ammonia in hydrothermal method [18].CuZnWO4 bimetallic tungstate was synthesized by hydrothermal method using copper acetate and zinc acetate as a precursor
The peaks which were obtained in CuZnWO4 spectra are present in CuZnWO4/rGO composite and some other absorptionbandsare obtained with respect to rGO [27]
Summary
In the 21st century, the manhood met massive challenges in energy crisis and ecological pollution. Most of the catalysts and electrodes suffer from low-light energy garnering and quick extermination of electron-hole pairs Among these materials, the metal tungstate’s has a significant consideration owing to their immeasurably wide-range of applications in various fields such as supercapacitors (SCs), photocatalysis, optical devices, structural, electrical/electronics, humidity sensors, metal-ion batteries and electrocatalysis[8,9]. The metal tungstate’s has a significant consideration owing to their immeasurably wide-range of applications in various fields such as supercapacitors (SCs), photocatalysis, optical devices, structural, electrical/electronics, humidity sensors, metal-ion batteries and electrocatalysis[8,9] Chemical contaminants such as dyes emitted from the clothing, food, and leather industries pose a major environmental threat. The above results are projected that the CuZnWO4/rGO nanocomposite assist as an effective electrode SCs electrode material for and photocatalytic applications
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