Due to modernization and the scarcity of fossil fuel resources, energy demand is continuously increasing. In this regard, it is essential and necessary to create a renewable energy source that can meet future energy demands. Recently, the production of H₂ by water splitting and removing pollutants from the water has been essential for issues of energy and environmental demands. Herein, g-C₃N₄ and Ag-g-C₃N₄ composite structures have been successfully fabricated by the ultrasonication method. The physio/photochemical properties of prepared g-C₃N₄ and Ag-g-C₃N₄ were examined with different analytical techniques such as FTIR, XRD, UV-DRS, SEM, TEM, PL, and XPS analyses. The silver quantum dots (QDS) anchored to g-C₃N₄ structures performed the profound photocatalytic activities of H₂ production, dye degradation, and antimicrobial activity under visible-light irradiation. The Ag/g-C₃N₄ composite with an Ag loading of 0.02 mole has an optimum photoactivity at 335.40 μmol g⁻¹ h⁻¹, which is superior to other Ag loading g-C₃N₄ composites. The synthesized Ag/g-C₃N₄ nanoparticles showed potential microbial inhibition activity during the preliminary screening, and the inhibition zones were comparable to the commercial antibiotic chloramphenicol. The loading of Ag into g-C₃N₄ paves the suppression, recombination and transfer of photo-generated electron-hole pairs, leading to the enhancement of hydrogen production, the diminishment of pollutants in water under visible light irradiation, and antimicrobial activity against multidrug-resistant pathogens.

Zinc cobaltite (ZnCo₂O₄) is an emerging electrode material for supercapacitors due to its rich redox reactions involving multiple oxidation states and different ions. In the present work, potato chip-like 0D interconnected ZnCo₂O₄ nanoparticles (PIZCON) were prepared using a solvothermal approach. The prepared material was characterized using various analytical methods, including X-ray powder diffraction and scanning electron microscopy. The possible formation mechanism of PIZCON was proposed. The PIZCON electrode material was systematically characterized for supercapacitor application. The areal capacitance of PIZCON was 14.52 mF cm⁻² at 10 µA cm⁻² of current density, and retention of initial capacitance was 95% at 250 µA cm⁻² following 3000 continuous charge/discharge cycles. The attained measures of electrochemical performance indicate that PIZCON is an excellent supercapacitor electrode material.

Background: In recent years, admirable research is being conducted on phyto-organic moieties from diverse biological sources for use as green bimetallic catalysts in organic pollutant degradation has a modern green nanoscience and technology for the green bimetallic catalyst for organic pollutant degradation. Furthermore, due to the lack of abundance of monometallic source materials, the researcher dedicated to their efforts, to produce ultra-small bimetallic nanomaterials owing to their high stability, synergetic effect on catalytic behavior. In this connection, our present investigation focuses on the utilization of biomolecules from mushrooms to fabricate green gold-palladium (Au/Pd) bimetallic quantum dots (QDs) for the degradation of an organic dye (methylene blue). Method: The approach can reduce the usage of harmful chemicals and environmentally harmless. Moreover, the ultra-small structures possess high catalytic behavior, which can be used for industrial and environmental processes such as pollutant oxidation in exhaust catalytic converters. The reduction and formation of bimetallic catalysts were investigated by UV-Vis spectroscopy. Result: FT-IR investigation revealed the interaction between the QDs and the surface-adsorbed (physiochemical) biomolecules responsible for the possible pathway of the reduction and stabilization of the QDs. Conclusion: The surface morphology and size of the QDs were analyzed from TEM images. The crystalline nature of the Au/Pd QDs was characterized by SAED and X-ray diffraction patterns.

Ecofriendly technologies which include recycling wastewater, removing toxic and organic and inorganic pollutant were significantly lime lighted due to the high global warming and scarcity pure wate...