Novel Approaches to Metallization of Cellulose by Reduction of Cellulose-Incorporated Copper and Nickel Ions |
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| Authors: | N Kotelnikova U Vainio K Pirkkalainen R Serimaa |
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| Institution: | 1. Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia;2. Department of Physical Sciences, University of Helsinki, SF-00014 Helsinki, Finland |
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| Abstract: | 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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| Keywords: | cellulose copper nanoparticles nickel reducers |
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