Artículos de revistas
Formation Of Complexes Between Functionalized Chitosan Membranes And Copper: A Study By Angle Resolved Xps
Registro en:
Materials Chemistry And Physics. Elsevier Science Sa, v. 185, p. 152 - 161, 2017.
0254-0584
1879-3312
WOS:000389097000020
10.1016/j.matchemphys.2016.10.018
Autor
Jurado-Lopez
Belen; Vieira
Rodrigo Silveira; Rabelo
Rodrigo Balloni; Beppu
Marisa Masumi; Casado
Juan; Rodriguez-Castellon
Enrique
Institución
Resumen
Chitosan is a biopolymer with potential applications in various fields. Recently, it has been used for heavy metals removal like copper, due to the presence of amino and hydroxyl groups in its structure. Chitosan membranes were crosslinked with epichlorohydrin and bisoxirano and functionalized with chelating agents, such as iminodiacetic acid, aspartic acid and tris-(2-amino-ethyl) polyamine. These membranes were used for copper adsorption and the formed complexes were characterized. Thermal and crystalline properties of chitosan membranes were studied by TG-DCS and X-ray diffraction. Raman, XPS and FT-IR data confirmed that copper is linked to the modified chitosan membranes by the amino groups. The oxidation state of copper-chitosan membranes were also studied by angle resolved XPS, and by UV Vis diffuse reflectance spectroscopy. (C) 2016 Elsevier B.V. All rights reserved. 185 152 161 Ministerio de Economia y Competitividad (Spain) [CfQ2015-68951-C3-3R, CTQ2012-30703] Junta de Andalucia, Spain [P12-RNM-1565] FEDER funds