Solar photocatalytic degradation of isoproturon over TiO2/H-MOR composite systems

Photodegradation of oxytetracycline in aqueous by 5A and 13X loaded with TiO2 under UV irradiation

“…It expressed that the adsorption of OTC on 5A had been handicapped by TiO 2 loading. Similar result had been observed by loading TiO 2 on H-mordenite by P. Sharma [23]. That is because the loading TiO 2 occupies the adsorption sites on outsurface of 5A and these adsorption sites play a principal role in OTC adsorption, as the OTC molecular are difficult to enter into the 5A micropores with diameter as small as 5 × 10 −10 m to touch the inter-surface sites.…”

“…In this competition, zeolites have been proved to be an ideal support for their good adsorption property of various water-bone organic pollutants and superior microporous structure for diffusion. A review of recent research revealed that several zeolites such as HZSM-5 [22], H-mordenite [23], mesoporous Al-MCM-41 [24], Y-zeolite [25] and clinoptilolite [26] are successful supporters for titanium dioxide. And the composite photocatalysts were proved effective for degradation and mineralization of herbicides or pesticides under solar light or xenon lamp, where the use of monochromatic UV wavelengths was seldom attempted.…”

Photocatalytic degradation of basic blue 9 by CoS nanoparticles supported on AlMCM-41 material as a catalyst

“…Several experimental results indicated that the degradation rates of photocatalytic oxidation of various dyes over different catalysts fitted by first order kinetic model [28]. Fig.…”

TiO2 supported over porous silica photocatalysts for pesticide degradation using solar light: Part 2. Silica prepared using acrylic acid emulsion

“…Hence, there is a need for considerable research to eradicate these pollutants from the water bodies in a cost-effective manner. In this regard, heterogeneous photocatalysis is a promising tool for the treatment of contaminated water since a decade because it degrades hazardous as well as toxic pollutants that are not easily degraded by conventional treatment methods [3][4][5][6][7][8]. The process mainly depends on the generation of hydroxyl radicals that can oxidize the pollutants easily.…”

“…The main drawbacks of this technology are fast recombination of the photogenerated electrons (e − ) with holes (h + ) and also the separation of catalyst is found to be cumbersome after the reaction. To overcome these problems, several approaches are reported in the literature; like usage of different supports, making films and doping the catalyst with different metals [3,6,[8][9][10][11] etc. It is evidenced that porous supports with their high surface area and morphology host photoactive semiconductor materials conveniently without affecting their properties.…”