Mesoporic material from microcrystalline cellulose with gold nanoparticles: a new apporoach to metal-carrying polysaccharides

Vasil'kov, A.Y.; Rubina, M.S.; Gallyamova, A.A.; Naumkin, A.V.; Buzin, M.I.; Murav'eva, G.P.

Авторы: Vasil'kov A.Yu, Rubina M.S., Gallyamova A.A., Naumkin A.V., Buzin M.I., Murav'eva G.P.
Журнал: Mendeleev Communications
Том: 25
Год издания: 2015
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 358
Последняя страница: 360
DOI: 10.1016/j.mencom.2015.09.014
Аннотация: Porous nanocomposites based on polysaccharides are widely used in cosmetic and medical fields and for the production of carbon materials, catalytic supports etc. 1 Cellulose is of special interest because the modification of this natural polymer with metal nanoparticles (NPs) gives special magnetic, catalytic and antibacterial properties to the material.1,2 For example, cellulose modified with Ag NPs exhibits high antibacterial properties.3 Methods for modifying cellulose with metal NPs are based on metal recovery from precursors, such as metal salts, metal complexes and other metal compounds introduced into the polymer.4 As a rule, polymers modified with metals require an additional cleaning procedures to remove the decomposition products of the complex, the reducing agent, surfactants or other compounds used in the synthesis of metal NPs. Metal-vapor synthesis (MVS) is free of these disadvantages and affords monoand bimetallic NPs5 and materials based on them.6 Metal NPs synthesized by MVS are in the non-oxidized form, the formation of materials occurs at temperatures up to 300 K, which allow the polymer to avoid degradation. The formation of porous polymer structure promotes effective stabilization and more uniform distribution of NPs in polymer surface layers. For instance, porous cellulose can be produced by direct dissolving cellulose in an aqueous alkali followed by precipitation and freeze drying.
Добавил в систему: Муравьева Галина Петровна

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Mesoporic material from microcrystalline cellulose with gold nanoparticles: a new apporoach to metal-carrying polysaccharidesстатья

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