New separation materials based on gold nanoparticlesстатья

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Дата последнего поиска статьи во внешних источниках: 7 ноября 2016 г.

Работа с статьей

[1] New separation materials based on gold nanoparticles / A. Majouga, D. Pichugina, I. Ananieva et al. // Journal of Manufacturing Technology Management. — 2010. — Vol. 21, no. 8. — P. 950–955. Purpose – Gold clusters supported on oxide surface are most promising as active sites as biochemical sensors, in optical industry and catalysis, but there is no information about application of these nanoparticles in analytical chemistry for the chromatographical separation of organic compounds. Thus, the aim of this paper is the development of new separation systems based on gold nanoparticles. Design/methodology/approach – The novel nanohybride system based on gold nanoparticles, cysteine and inorganic matrixes was synthesis. The results were obtained by the combined approach consisting quantum-chemical calculations, direct organic synthesis and using chromatography investigation of obtained sorbent for separation of aminopyridines. Findings – The structure optimization of cysteine-gold cluster complexes reveals that adsorbed acid greatly changes the structure of gold nanoparticle and, consequently, changes its properties. The most bond energy is calculated for L-form 82 kcal/mol. Material based on alumina, modified gold nanoparticle with L-cysteine was synthesized and capacity coefficients for model compounds majoring by chromatography technique were obtained. Practical implications – The developed sorbent that consists of alumina, gold nanoparticle and organic ligand (L-cysteine) can used in analytical chemistry for the chromatographical separation of aminopyridine. The material has same advantages: simple sorbent synthesis, stability and repeatability in separation experimental. The presented novel nanohybride system is protected by Russian patent. Originality/value – The paper presents a successful application of nanogold for analytical separation of organic compounds, new knowledge about properties of gold in nanosized region and information about bonding sulfur with nanocluster’s surfaces, obtained by model physical-chemistry. [ DOI ]

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