Influence of the synthesis conditions on the characteristics and metal adsorption properties of the 3-(1,4-phenylenediamine)propylsilica xerogel

• Autor(a) principal: Vaghetti,J. C. P
• Data de Publicação: 2005
• Outros Autores: Brasil,J. L., Costa,T. M. H, Lima,E. C., Benvenutti,E.V
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Eclética Química
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702005000400006
• topic: sol-gel; hybrid powders; pore distribution; morphology; metal adsorbent

The hybrid 3-(1,4-phenylenediamine)propylsilica xerogel was obtained starting from two different organic precursor quantity (5 and 8 mmol) to 22 mmol of TEOS, in the synthesis. The xerogel samples were characterized by using CHN elemental analysis, N2 adsorption-desorption isotherms, infrared thermal analysis. The xerogel was used as metal sorbent for Cu2+, Cd2+ and Pb2+ in aqueous solution with concentration range of 10-3 to 10-5 mmol l-1. The quantity of organic precursor added in the synthesis influences the characteristics of the xerogel as morphology and thermal stability, as well as the metal adsorption capacity.