当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Synthesis and characterization of guar-alginate hybrid bead templated mercury sorbing titania spheres.

Synthesis and characterization of guar-alginate hybrid bead templated mercury sorbing titania spheres.

Abstract：

:Present communication reports on the synthesis and characterization of Hg(II) sorbing millimeter sized porous titania spheres (TSP). The synthesis utilizes guar gum-alginate hybrid beads as sacrificial template to polymerize titanium(IV) isopropoxide. The hybrid beads are crafted by pouring guar-alginate mixed solution to calcium bath. The mechanical strength of the beads depended on guar to alginate ratio in the mixed solution. The equal weight ratio of the two polysaccharides is appropriate for adequate mechanical strength beads. The unique performance of the templating beads is attributed to the synergistic interaction between guar gum and sodium alginate. FTIR, BET, SEM, TEM, XRD, TGA, and DTG analyses have been used for the characterization of the optimum performance TSP (TSPAG2). TSPAG2 is a mesoporous material that has higher surface area and narrower pore size distribution than pure alginate derived titania spheres (TSPA). TEM study demonstrated that TSPAG2 spheres are constituted of aggregated TiO2 nanoparticles of ∼ 10 nm size. TSPAG2 is able to capture >95% Hg(II) from synthetic Hg(II) solution in 10h at pH 5 as opposed to only 68% removal by TSPA.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Singh V,Preeti,Singh A,Singh D,Singh Y,Pandey AK

doi

10.1016/j.ijbiomac.2014.08.016

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

261-8

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(14)00549-2

journal_volume

72

pub_type

杂志文章

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