title: Modification of SiO2 nanowires with metallic nanocrystals from supercritical CO2.
abstract: Through hydrogen reduction of metal precursors in supercritical CO2, Cu, and Pd, nanocrystals were deposited onto SiO2 nanowires to form different types of nanostructured materials, including nanocrystal-nanowire, spherical aggregation-nanowire, shell-nanowire composites, and "mesoporous" metals supported by the framework of nanowires. This supercritical fluid deposition technique is an attractive approach for modifying nanowires because of its generality and simplicity; the modified nanowires could be useful as catalysts and for further fabrication of multifunctional composites.
authors.affiliation: Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, USA.
authors.forename: Xiang-Rong
authors.initials: XR
authors.lastname: Ye
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Zhang
authors.forename: Yuehe
authors.initials: Y
authors.lastname: Lin
authors.forename: Lai-Sheng
authors.initials: LS
authors.lastname: Wang
authors.forename: Chien M
authors.initials: CM
authors.lastname: Wai
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry; D025924:Chromatography, Supercritical Fluid / Q000379:methods*; D003300:Copper / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D004559:Electric Wiring; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods; D008422:Materials Testing / Q000379:methods; D008670:Metals / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010165:Palladium / Q000737:chemistry; D011312:Pressure; D012822:Silicon Dioxide / Q000138:chemical synthesis / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D008670:Metals; D002245:Carbon Dioxide; D010165:Palladium; D012822:Silicon Dioxide; D003300:Copper