In this work, we reviewed the most significant patents of last decade (2010–2020) in fields water and air photocatalytic treatment. Patents were discussed by identifying recurrent addressed issues presenting proposed solutions. Adoption TiO2 and/or modified-TiO2-based material is still common choice inventors, whereas many focus on design plants/devices to improve efficiency treatment improving...

Heavy metals are one of the greatest elevating threat to mankind and other living organisms it is released into environment due increasing dumpsites, transports, industrial sectors. The wastewater containing heavy metal ions easily enters food chain through air, water, soil; results in bioaccumulation biomagnifications human beings. It causes severe chronic health disorders affecting nervous sy...

Xanthate is the most widely used and effective collector in flotation of sulfide minerals. However, residual xanthate wastewater may cause serious environmental pollution even human health hazards. At present, a variety treatment technologies have been developed to degrade pollutants wastewater, with aim meeting safe discharge standards. This work reviews research status recent years. Treatment...

Textile industries discharge a large quantity of colored wastewater which is harmful to the ecosystem. In this study, two kinds of dyes were investigated: the mono azo Acid Orange 7 (AO7) and diazo Reactive Green 19 (RG19). The photocatalytic degradation of single (AO7, RG19) azo dye and binary (AO7 and RG19 mixture) azo dye aqueous solutions was photocatalyzed by commercial titanium dioxide (T...

A novel photocatalyst ZnBiErO₄ was firstly synthesized by solid-state reaction method and its structural and photocatalytic properties were analyzed by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and UV-Vis diffuse reflectance. The results demonstrated that ZnBiErO₄ crystallized with tetragonal crystal structure with space group I41/A. The lattice parameter...

Effect of different type of organic compounds (humic acid, oxalate, ethylenediaminetetraacetic acid, nitrilotriacetic acid, phenol) on the photocatalytic removal of cyanide with TiO2 or ZnO was studied in this work with variation of the solution pH, contact time, initial cyanide concentration and type of organic compounds. Photocatalytic oxidation efficiency of cyanide with TiO2 was greatly aff...

We report on the successful functionalization of cotton fabrics with a water-stable metal-organic framework (MOF), UiO-66, under mild solvothermal conditions (80 °C) and its ability to adsorb and degrade water micropollutants. The functionalized cotton samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmiss...

Herein, we demonstrate the design and fabrication of the well-defined triple-shelled Ag@Fe3O4@SiO2@TiO2 nanospheres with burr-shaped hierarchical structures, in which the multiple distinct functional components are integrated wonderfully into a single nanostructure. In comparison with commercial TiO2 (P25), pure TiO2 microspheres, Fe3O4@SiO2@TiO2 and annealed Ag@Fe3O4@SiO2@TiO2 nanocomposites, ...