Nanoporous Cellulose as Metal Nanoparticles Support
- 24 November 2008
- journal article
- research article
- Published by American Chemical Society (ACS) in Biomacromolecules
- Vol. 10 (1), 87-94
- https://doi.org/10.1021/bm800919e
Abstract
Despite considerable progress in the field of metal nanoparticles synthesis, major challenges remain in many practical applications of nanoparticles which require their immobilization on solid substrates, presenting additional difficulty in separation and processing. Here, transparent nanoporous cellulose gel obtained from aqueous alkali hydroxide-urea solution was examined as supporting medium for noble metal nanoparticles. Silver, gold, and platinum nanoparticles were synthesized in the gel by hydrothermal reduction by cellulose or by added reductant. Both methods gave nanoparticles embedded with high dispersion in cellulose gels. Supercritical CO2 drying of the metal-carrying gel gave corresponding aerogels with high transmittance, porosity, surface area, moderate thermal stability, and good mechanical strength. The cellulose and metal-cellulose gels were characterized by UV/vis spectroscopy, optical microscopy, SEM, TEM, XRD, nitrogen physisorption, TGA, and tensile testing, systematically.Keywords
This publication has 45 references indexed in Scilit:
- Synthesis and stabilization of selenium nanoparticles on cellulose nanocrystalMaterials Letters, 2007
- Simple preparation and stabilization of nickel nanocrystals on cellulose nanocrystalMaterials Letters, 2007
- Cellulose-Directed Growth of Selenium Nanobelts in SolutionChemistry of Materials, 2005
- From Hydrocolloids to High Specific Surface Area Porous Supports for CatalysisBiomacromolecules, 2005
- Rapid Dissolution of Cellulose in LiOH/Urea and NaOH/Urea Aqueous SolutionsMacromolecular Bioscience, 2005
- Cellulose: Fascinating Biopolymer and Sustainable Raw MaterialAngewandte Chemie-International Edition, 2005
- Synthesis and characterization of chiral mesoporous silicaNature, 2004
- Facile In Situ Synthesis of Noble Metal Nanoparticles in Porous Cellulose FibersChemistry of Materials, 2003
- Shape-Controlled Synthesis of Gold and Silver NanoparticlesScience, 2002
- Uniform Silver Nanowires Synthesis by Reducing AgNO3 with Ethylene Glycol in the Presence of Seeds and Poly(Vinyl Pyrrolidone)Chemistry of Materials, 2002