Synthesized of Sporopollenin-Immobilized Schiff Bases and Their Vanadium(IV) Sorption Studies

Abstract

This study investigated the potential use of a biologic polymer Lycopodium clavatum spores (Sporopollenin) for removal of vanadium ions (V(IV)) from aqueous solution. Three Schiff base derivative compounds immobilized sporopollenin were prepared and characterized. Immobilized sporopollenin was characterized via a scanning electron microscope, elemental analysis, infrared spectroscopy and thermal analysis techniques. The sorption capacities of the immobilized surfaces toward V(IV) ions were investigated by batch sorption experiments. V(IV) concentration, initial pH and the temperature effects were studied. The isotherm data of V(IV) ions were correlated reasonably well both Langmuir, Freundlich sorption isotherm. The thermodynamic studies showed that the V(IV) sorption onto immobilized sporopollenin derivatives is a spontaneous, endothermic and a chemical reaction.

A versatile bio-inspired material platform for catalytic applications: micron-sized “buckyball-shaped” TiO2structures

“…EDX spectrum corresponding to the inner red zone (i.e., inside the hollow capsule) is dominated by C and O signals without a signicant contribution from the Ti signal; conversely, the EDX spectrum for the outer blue zone (i.e., outermost surface) is dominated by Ti signals. These results are consistent with the thermogravimetric analysis (TGA) measurements in the literature, 29 which reported that while TiO 2 revealed a negligible gravimetric loss within 25-800 C, uncoated Lycopodium spores underwent almost 60% weight loss within 250-450 C due to thermal decomposition/degradation/oxidation processes.…”

How does iron interact with sporopollenin exine capsules? An X-ray absorption study including microfocus XANES and XRF imaging

“…10 They have also been used for solid phase peptide synthesis, 11,12 as micro-reactors for the preparation of nanoparticles, 13 and as solid supports for palladium catalysed Heck reactions. 14 Functionalised SECs with either carboxylated or glyoximated diamino groups have been used for ion exchange and ligand exchange chromatography, [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] often in conjunction with Co. 16,17,[19][20][21][24][25][26][27][28][29][30] The SECs have also been proposed for metal remediation and adsorption either on their own 31,32 or functionalised with carboxylate and glyoxime groups, 18,33 dithiocarbamates, 34 glutaraldehyde, 35 (E)-4-((2-hydroxyphenylimino) methyl) benzoic acid, 36 Schiff bases, [37][38][39][40][41] or calixarenes. 42,…”

Causes of Chronic Kidney Disease of Non-Traditional Origin in Central America: An Approach Based on Medical Geology

“…Vanadium, like other heavy metals, is widely distributed in the environment [70] and occurs naturally in variable concentrations in matrices such as soil and water [71]. When of natural origin, it is mainly a product of volcanic activity and soil erosion [72].…”