Graphitic-C3N4 coated floating glass beads for photocatalytic destruction of synthetic and natural organic compounds in water under UV light

Abstract

This document was downloaded from https://openair.rgu.ac.uk Graphitic-C3N4 coated floating glass beads for photocatalytic destruction of synthetic and natural organic compounds in water under UV light

Chemical reactions of graphitic carbon nitride films with glass surfaces and their impact on photocatalytic activity

“…The reactants degrade methyl orange via the subsequent formation of OH radicals. 48 Here, the LUMO position of the unmodified molecule agrees well with the data reported in the literature. 57 It should also be pointed out that the HOMO of the modified molecules is very close to the redox potential of the generation of OH radicals, but the driving force to directly generate OH radicals by the photogenerated holes on the HOMO of the modified molecule is insufficient.…”

“…7b), which indicates that IPA acts as a hole scavenger 46,47 rather than a quencher of OH radicals. 48 The performance reaches about two-thirds of the degradation efficiency of the TiO 2 film (anatase) (Fig. S10c, ESI †).…”

Recent Achievements in Dyes Removal Focused on Advanced Oxidation Processes Integrated with Biological Methods

“…Measurements of cytotoxicity, mutagenicity and phytotoxicity changes, proposal of degradation mechanism, comparison of different UV sources [80][81][82][83][84][85] Photocatalytic oxidation Synthesizing nanoparticles, efficient under visible light or difunctional catalysts, green methods of catalyst synthesis [86][87][88][89][90][91]…”

Engineering Commercial TiO2 Powder into Tailored Beads for Efficient Water Purification

“…The preferential use of nanostructured photocatalysts in AOPs for the degradation of various organic and inorganic water pollutants can be attributed to their environmentally benign properties, including high thermal stability, biological and chemical inertness, and low cost and toxicity [ 5 , 8 , 9 , 10 , 11 , 12 , 13 ], mineralizing to water, CO 2 , and minerals. On the other hand, the application of photocatalysts in powder form has been related to technical and practical problems, including the time- and energy-consuming separation/recovery of the photocatalyst from the treated solution [ 4 , 14 , 15 , 16 , 17 ], the mass transfer limitations, and the insufficient irradiation of the photocatalysts in the slurry [ 18 , 19 , 20 , 21 , 22 ] emanating from shielding effects of the suspended solid leading to significantly increasing the operational and capital costs due to the use of high power UV irradiation sources and stirring equipment, as well as the design of more complex processes for the effective separation for the photocatalyst’s retrieval downstream.…”

“…The most important problem involved in the use of polymeric matrices as shaping agents of the photocatalysts is their potential degradation under the experimental conditions used (continuous UV irradiation) [ 22 , 30 ] and the oxidative action of the photocatalyst, deteriorating the mechanical stability of the material. To overcome these problems, an additional step of pyrolysis/sintering was applied.…”