Preparation, characterization, and behavior of cellulose–titanium(IV) oxide modified with organosilicone

Abstract

Cellulose-titanium(IV) oxide modified with organosilicone (CTSN) was prepared by a reaction of cellulose powder with titanic chloride, followed by a reaction with 4-aza-6-aminohexyl triethoxysilane, and was characterized by infrared spectroscopy, scanning electron microscopy (SEM), and thermogravimetric analysis. An SEM image of titanium(IV) oxide-coated cellulose and a Ti mapping image showed that titanium oxide was well dispersed on the cellulose surface. Titanium and silicon mapping images of CTSN, obtained with SEM, indicated that both oxides were uniformly dispersed on the cellulose surface. The atomic ratio of Ti to Si was obtained with X-ray energy spectral composition analysis. The adsorption behavior of CTSN toward Hg(II), Cu(II), Pb(II), Fe(III), and Cr(III) ions in aqueous solutions was determined. The adsorption behavior of CTSN toward human serum protein was preliminarily examined.

Preparation and characterization of titanium oxide‐densified cellulose beads for expanded bed adsorption

“…Its replaceable, renewable, and biodegradable properties have make it one of the most widely studied polymers. 1,2 In the 1970s, Peška et al 3 developed a method for manufacturing cellulose beads based on the thermal sol-gel transition process of cellulose xanthate viscose. From then on, porous cellulose bead has been widely used as column packing material for liquid chromatography and as matrix for further derivatization for ion exchange or affinity chromatography.…”

Preparation, characterization of cellulose-grafted with calix[4]arene polymers for the adsorption of heavy metals and dichromate anions

“…Compounds 1 and 4-7 were prepared according to known previous procedures [19,26]. The preparation of compounds 2 and 3, and cellulose-grafted with calix [4]arene polymers (CGC[4]P-1 and CGC[4]P-2) employed in this work, as illustrated in Figs.…”

“…2 and 3. The syntheses of compounds 1 and 4-7 were based on the previously published procedures [19,26], while the reaction steps leading to cellulose derivatives 2 and 3, cellulose-grafted with calix [4]arene polymers CGC[4]P-1 and CGC[4]P-2 ( Figs. 1 and 2) were reported for the first time.…”