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Reference type: Journal
Authors: Zhang L, Yang SW, Han T, Zhong LL, Ma CL, Zhou YZ, Han XL
Article Title: Improvement of Ag(I) adsorption onto chitosan/triethanolamine composite sorbent by an ion-imprinted technology.
Publication date: 2012
Journal: Applied Surface Science
Volume: 263
Page numbers: 696-703.
DOI: 10.1016/j.apsusc.2012.09.143
Alternative URL: http://www.sciencedirect.com/science/article/pii/S016943321201687X

Abstract: The chitosan/triethanolamine (CTS/TEA) composites including Ag-imprinted CTS/TEA hydrogel bead (Ag-ICTHB) and Ag-imprinted CTS/TEA gel bead (Ag-ICTGB) were prepared by using ion-imprinted technology, in which TEA solution was used as coagulation bath to obtain the two sorbents. The optimization conditions for preparing the sorbents were listed: molar ratio (CTS:Ag(I)) = 1:0.10, c(CTS) = 1.0 for Ag-ICTHB and 2.0% for Ag-ICTGB, c(TEA) = 14%, and c(Na2S2O3) = 8.0 g L-1 as the elueant. The spectrum of FT-IR implies that bonding are formed between TEA and the primary hydroxyl of CTS, and NH and OH of CTS have some interactions with Ag(I). The DSC curve shows that two form of acting force for the adsorption of Ag(I) were appeared in the adsorption between the sorbents and Ag(I). The maximum adsorption capacities of Ag-ICTHB and Ag-ICTGB for Ag+ are 510 and 350 mg g-1, respectively. Moreover, the two beads exhibit good selectivity and durability for Ag+
Template and target information: silver ion, Ag(I)
Author keywords: chitosan, Ion-imprinted technology, Silver, Triethanolamine, adsorption

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