Study of platinum and palladium aggregates intercalation into cellulose by waxs, spectroscopic, and microscopic methods

Kotelnikova, N. E.; Paakkari, T.; Serimaa, Ritva; Wegener, G.; Windeisen, E.; Kotel'nikov, V. P.; Demidov, V. N.; Schukarev, Andrey

doi:10.1002/masy.19991380122

Cited by 6 publications

(1 citation statement)

References 3 publications

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“…Therefore, cellulose is considered a neutral nanoreactor [53]. Hydrogels produced from pristine cellulose along with aerogels, films, powder samples, and fibers were successfully applied as scaffolds (carriers, matrices, sacrificing templates) for intercalation of transition zero-valent d-metals, such as cobalt, nickel, silver, gold, platinum, palladium, iron, copper, zinc or/and their oxides [51][52][53][54][55][56][57][58][59][60]. For example, it was shown that the hydrate cellulose film could be successfully used to obtain nickel nano-and microspecies located mainly on the surface or in the near-surface layer.…”

Section: Cellulose Metallogelsmentioning

confidence: 99%

Cellulose-Based Metallogels—Part 1: Raw Materials and Preparation

Михаилиди

Volf

Belosinschi

et al. 2023

Gels

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Metallogels are a class of materials produced by the complexation of polymer gels with metal ions that can form coordination bonds with the functional groups of the gel. Hydrogels with metal phases attract special attention due to the numerous possibilities for functionalization. Cellulose is preferable for the production of hydrogels from economic, ecological, physical, chemical, and biological points of view since it is inexpensive, renewable, versatile, non-toxic, reveals high mechanical and thermal stability, has a porous structure, an imposing number of reactive OH groups, and good biocompatibility. Due to the poor solubility of natural cellulose, the hydrogels are commonly produced from cellulose derivatives that require multiple chemical manipulations. However, there is a number of techniques of hydrogel preparation via dissolution and regeneration of non-derivatized cellulose of various origins. Thus, hydrogels can be produced from plant-derived cellulose, lignocellulose and cellulose wastes, including agricultural, food and paper wastes. The advantages and limitations of using solvents are discussed in this review with regard to the possibility of industrial scaling up. Metallogels are often formed on the basis of ready-made hydrogels, which is why the choice of an adequate solvent is important for obtaining desirable results. The methods of the preparation of cellulose metallogels with d-transition metals in the present state of the art are reviewed.

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Section: Cellulose Metallogelsmentioning

confidence: 99%

Cellulose-Based Metallogels—Part 1: Raw Materials and Preparation

Михаилиди

Volf

Belosinschi

et al. 2023

Gels

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Novel Approaches to Metallization of Cellulose by Reduction of Cellulose‐Incorporated Copper and Nickel Ions

Kotelnikova

Vainio

Pirkkalainen

et al. 2007

Macromolecular Symposia

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Summary: Copper and nickel nanoparticles were synthesized in the insoluble microcrystalline cellulose support by reduction of metal ions with several reducers in various media resulting in cellulose‐metal nanocomposites. Wide‐angle X‐ray scattering results showed that supramolecular structure of cellulose did not change. Crystalline Cu2O and Cu0 nanoparticles were prepared with reducers NaBH4 and N2H4 · H2SO4, CuO nanoparticles – with cellulose itself as a reducer. Crystalline Ni0 nanoparticles were synthesized with N2H4 · 2HCl and NaBH4; Ni0 nanoparticles in amorphous form were prepared with KH2PO2 · H2O. SEM revealed large agglomerates of metal particles on the fibre surface. ASAXS and TEM have shown the nanoparticles to be in the range 5–55 nm.

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