Mesoporous silica SBA-15 functionalized by nickel-phosphonic units: Raman and magnetic analysis

被引：25

作者：

Laskowski, Lukasz ^{[1
]}

Laskowska, Magdalena ^{[2
]}

Balanda, Maria ^{[3
]}

Fitta, Magalena ^{[3
]}

Kwiatkowska, Jadwiga ^{[3
]}

Dzilinski, Kazimierz ^{[2
]}

Karczmarska, Agnieszka ^{[3
]}

机构：

[1] Czestochowa Tech Univ, Inst Intelligent Computat Syst, PL-42200 Czestochowa, Poland

[2] Czestochowa Tech Univ, Inst Phys, PL-42200 Czestochowa, Poland

[3] Polish Acad Sci, H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2014年 / 200卷

关键词：

Nickel; Mesoporous silica; Raman; DFT; SQUID; SINGLE-MOLECULE MAGNETS; TIO2; NANOPARTICLES; ADSORPTION; DFT;

D O I：

10.1016/j.micromeso.2014.08.041

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In the present work we present mesoporous silica SBA-15 containing propyl-nickel phosphonate study towards confirmation of synthesis procedure correctness. The structure of mesoporous sample was tested by TEM microscopy, N-2 asorption tests and X-ray scattering. To probe bounding between nickel atoms and phosphonic units the Raman spectroscopy was carried out. As a support of Raman scattering, the theoretical calculations were made based on density functional theory, with the B3LYP method. By comparison of the calculated vibrational spectra of the molecule with experimental results, distribution of the active units inside silica matrix has been determined. Magnetic measurements were carried out to find nickel ions concentration inside the mesoporous matrix, and also to determine nickel ions environment. Both magnetic and Raman study confirm the efficiency of the synthesis and corroborate the homogenous distribution of nickel phosphonate active units in silica matrix. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：253 / 259

页数：7

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