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Synthesis of CuO and Cu₃N Nanoparticles in and on Hollow Silica Spheres.

ABSTRACT: Copper oxide nanoparticles within hollow mesoporous silica spheres were prepared by binding/adsorbing Cu²⁺ or [Cu(NH₃)₄(H₂O)₂]²⁺ ions on the surface of carbon spheres, followed by formation of a mesoporous silica shell by sol-gel processing and calcination in air. The CuO nanoparticles can subsequently be converted into Cu₃N nanoparticles by nitridation with ammonia. The effect of the different copper precursors, i.e. Cu²⁺ and [Cu(NH₃)₄(H₂O)₂]²⁺, on the nanocomposites was studied. CuO nanoparticles on the outer surface of hollow silica spheres were obtained by thermal treatment of hollow CuSiO₃ spheres in air. Nitridation of the CuSiO₃ spheres with ammonia resulted in Cu₃N@SiO₂ composites, with aggregated Cu₃N nanoparticles on hollow silica spheres.

SUBMITTER: Deshmukh R

PROVIDER: S-EPMC3688256 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature

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Synthesis of CuO and Cu3N Nanoparticles in and on Hollow Silica Spheres.

Deshmukh Rupali R Schubert Ulrich U

European journal of inorganic chemistry 20130308 14

Copper oxide nanoparticles within hollow mesoporous silica spheres were prepared by binding/adsorbing Cu2+ or [Cu(NH3)4(H2O)2]2+ ions on the surface of carbon spheres, followed by formation of a mesoporous silica shell by sol-gel processing and calcination in air. The CuO nanoparticles can subsequently be converted into Cu3N nanoparticles by nitridation with ammonia. The effect of the different copper precursors, i.e. C ...[more]

PMID: 23794942

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