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- W2051204207 abstract "Abstract TiO 2 nanoparticles were in situ supported on lignite fly ash (TiO 2 -FA) and investigated by several techniques. X-ray diffraction (XRD) analysis supplied information about the generation of anatase phase. Scanning electron microscopy (SEM) images with energy dispersive X-ray analysis (EDX) revealed variations in the surface morphology of raw FA after TiO 2 loading. Nitrogen adsorption–desorption isotherms (BET) isotherms indicated the formation of a mesoporous structure. X-ray photoelectron spectroscopy (XPS) confirmed the buildup of TiO 2 nanoparticles on the FA matrix with the form of Ti 4+ oxidation state. The optimum FA content of the composite was found as 88%. The supported nanocatalysts were tested for water vapor adsorption towards evaporative cooling of hydrophilic surfaces and for decolorization and degradation of methyl orange (MO) under UV irradiation. The mesoporous TiO 2 -FA was found to be hydrophilic with capillary condensation in the water vapor adsorption isotherm. Dark adsorption experiments followed pseudo-second order kinetics and Langmuir type of isotherms. Kinetics was discussed in terms of Langmuir–Hinshelwood model. The repeatability of photocatalytic activity was also tested. H 2 O 2 used as an electron scavenger accelerated decolorization and degradation of MO." @default.
- W2051204207 created "2016-06-24" @default.
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- W2051204207 date "2014-07-01" @default.
- W2051204207 modified "2023-10-17" @default.
- W2051204207 title "Dual functionality of TiO2-flyash nanocomposites: Water vapor adsorption and photocatalysis" @default.
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- W2051204207 doi "https://doi.org/10.1016/j.cattod.2014.01.031" @default.
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