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• W2094613120 abstract "Abstract One-pot intercalation of poly(diallymethylammonium chloride) (PDDACl) and poly(allylamine hydrochloride) (PAHCl) between the layers of crystalline MoO 3 was achieved for the first time using hydrothermal treatment. An experimental study monitoring the time of reaction and temperature of hydrothermal treatment showed that at 96 h and 150 °C the organic–inorganic [PAHCl] 0.18 [PAH] 0.38 MoO 3 and [PDDACl] 0.26 [PDDA] 0.24 MoO 3 hybrid materials were produced. In these conditions the MoO 3 host was able to expand its interlayer spacing from 0.64 to ca. 1.1 nm upon the intercalation of PDDACl and to approximately 2.2 nm with the use of PAHCl. The materials prepared with PAHCl exhibit a larger interlayer space and have a larger amount of intercalated polymer than those with PDDACl because of the PAHCl smaller charge density. The characterization of these hybrid materials using powder XRD, Raman, FTIR, fluorescence and UV–vis DRS spectroscopy, SEM and TG/DTG analysis supported the intercalation of the polymer between MoO 3 layers. UV–Vis DRS analysis clearly shows the presence of the mixed-valence Mo 5+ /Mo 6+ couple in the MoO 3 framework after the polyelectrolyte intercalation which indicates charge transfer from the polymer to the MoO 3 host. FTIR study also revealed short distances structural disorder related to presence of Mo 5+ centers after the intercalation. The hybrid materials produced, [PDDACl] 0.26 [PDDA] 0.24 MoO 3 and [PAHCl] 0.18 [PAH] 0.38 MoO 3 showed that approximately 53.0% and 32.0% of chloride ions are available for anionic exchange, respectively. These solids were employed as anion exchangers using cyanine dye; the emission band of the dye was monitored after the exchange as an indication of intercalation success. The cyanine dye containing hybrids presented an emission band centered at 602 nm even after extensive extraction with methanol." @default.
• W2094613120 created "2016-06-24" @default.
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• W2094613120 date "2013-09-01" @default.
• W2094613120 modified "2023-10-02" @default.
• W2094613120 title "The polyelectrolyte-MoO3 hybrids: Bottom up building of a layered anionic exchanger" @default.
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• W2094613120 doi "https://doi.org/10.1016/j.materresbull.2013.05.024" @default.
• W2094613120 hasPublicationYear "2013" @default.
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