Ionic silica based hybrid material containing the pyridinium group used as an adsorbent for textile dye

Journal of Colloid and Interface Science
Eliana W de MenezesEdilson V Benvenutti

Abstract

The present study reports the development of an ionic silica based hybrid material containing the cationic pyridinium group, which was employed for the removal of the Reactive Red 194 textile dye from aqueous solution. Three hybrid material samples were prepared with planned textural and chemical properties, varying the inorganic precursor molar percentage in the sol-gel synthesis. The obtained samples were defined as Py/Si-90, Py/Si-92 and Py/Si-94, where the number specifies the inorganic molar percentage. The hybrid samples were characterized by elemental, infrared, (13)C and (29)Si NMR, N(2) adsorption-desorption isotherms and thermogravimetric analyses. The dye-removing ability of these adsorbents was determined by the batch contact adsorption procedure. Effects such as pH value and adsorbent dosage on the adsorption capacities were studied. Four kinetic models were applied. The adsorption was best fitted to Avrami fractional-order kinetic model for the three hybrid material samples. The kinetic data were also adjusted to an intra-particle diffusion model resulting three linear regions, indicating that the adsorption kinetics follows multiple sorption rates. The equilibrium data were fitted to Langmuir, Freundlich and Liu ...Continue Reading

References

Aug 12, 2003·Journal of Colloid and Interface Science·Elaine C N LopesAntonio R Cestari
Dec 4, 2003·Journal of Colloid and Interface Science·Rení V S AlfayaYuriy V Kholin
May 25, 2005·Journal of Chromatography. a·Lúcia M L A AulerCarol H Collins
May 19, 2009·Journal of Colloid and Interface Science·Betina RoyerClaudio Airoldi
Aug 15, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Sílvia R GrandoEdilson V Benvenutti
Dec 22, 2010·Chemical Society Reviews·Nadine Nassif, Jacques Livage

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Citations

Jan 28, 2014·Journal of Hazardous Materials·Matthew A AdebayoReinaldo Ruggiero
Jul 9, 2016·Environmental Technology·Cibele S UmpierresEdilson V Benvenutti
Jun 3, 2018·Reviews on Environmental Health·Punyasloka PattnaikAwadhesh Kumar Bhardwaj
Feb 28, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Andressa C SchneidEliana W de Menezes
Mar 24, 2016·Polymers·João Augusto Oshiro JuniorLeila Aparecida Chiavacci

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