Metal–carboxylate interactions in metal–alginate complexes studied with FTIR spectroscopy

Incorporation of selectivity factor in modeling binary component adsorption isotherms for heavy metals-biomass system

“…This denotes that the binding of metal ions onto rice straw predominantly occurred by surface complexation or chelation mechanism (as evidenced from FTIR results) and ion exchange in lesser extent. For the latter mechanism, it was found to be predominant in the biosorption using algae or seaweed biomass, as verified in several studies [24][25][26].…”

Powder Characterization of Calcium Phosphate/Collagen for Bone Implant Application

“…The peak V 3 , hydroxyl stretch carbonate and phosphate were observed between 1300 and1650cm -1 [18] 976 and 1190cm -1 [18,19]respectively, where the highest peaks was observed for sample 99CaP which contains 1wt% of SA but the increasing wt% of SA led to a decreasein intensity. The peak for C1-H deformation manunuronic acid residue and hydroxyl stretch phosphate V 4 was observed between 878.9-882.4 cm -1 [17] and 520-600cm -1 [18,20,21] respectively where both of these peaks were observed in sample 97CaP. Based on the results,the addition of the SA influenced the intensity peaks of the composite where the formation of chemical bonds occurred between both materials.…”

“…Carboxyl (C=O) stretching vibration was detected at 1590-1750 cm -1 [16] where the intensity of the peaks increased when there is an increase the SA content in the CaP/SA composite sample and the peak was more extensive for sample 80 CaP. The peak that was observed in the region between 1405 to 1456 cm -1 and 1025.4 cm -1 belongs to the carboxyl -COOH stretching band [16] and C-O stretching vibration [17] respectively where the peaks were detected in pure SA only. The peak V 3 , hydroxyl stretch carbonate and phosphate were observed between 1300 and1650cm -1 [18] 976 and 1190cm -1 [18,19]respectively, where the highest peaks was observed for sample 99CaP which contains 1wt% of SA but the increasing wt% of SA led to a decreasein intensity.…”

Electrochemical deposition of a copper carboxylate layer on copper as potential corrosion inhibitor

“…The spectrum shows two absorption peaks at 2849 and 2917 cm -1 , which are related to the symmetric and asymmetric stretching vibrations of CH bonding [25][26][27]. The frequencies of the absorption bands of the carbonyl group (symmetric and asymmetric stretching) are in the region of 1350-1750 cm -1 .…”