Adsorption Behavior of Divalent Metal Ions onto Surface-functionalized Mesoporous Silicate MCM-41 Having Schiff Base Structure

Autor:	Yu Komatsu, Kaoru Fujinaga, Syunichi Oshima, Hidekazu Ohinata, Takushi Matsuno, Geoffrey W. Stevens, Yujiro Watanabe, Kenta Takasawa
Rok vydání:	2020
Předmět:	chemistry.chemical_compound Schiff base Adsorption MCM-41 X-ray photoelectron spectroscopy Chemistry Metal ions in aqueous solution Inorganic chemistry Fourier transform infrared spectroscopy Mesoporous material Analytical Chemistry Mesoporous silicate
Zdroj:	Analytical Sciences. 37:613-617
ISSN:	1348-2246 0910-6340
DOI:	10.2116/analsci.20p090
Popis:	Surface functionalized mesoporous silicates, MCM-41s, having 3-(2-pyridylmethylideneimino)propyl group (PI-MCM-41) or 3-(2-quinolylmethylideneimino)propyl group (QI-MCM-41) were prepared via Schiff base reaction, and the adsorption behavior of metal ions onto the modified MCM-41s was investigated. The function groups on the modified MCM-41 surface were confirmed by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and elemental analysis. The metal ions examined, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, and Pb2+, were quantitatively adsorbed on the PI-MCM-41 and QI-MCM-41, except for Mn2+. In the complexation with these metal ions, it was suggested that imine-N and heterocyclic-N atoms act as donor atoms. In addition, it was considered that the hydrophobicity derived from the organo-functional groups modified on MCM-41 contributed to improving the adsorption ability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04f78c096e7c372844d98514c4197474 https://doi.org/10.2116/analsci.20p090 Zobrazit plný text záznamu Full text from SpringerLink