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Preparation and characterization of gold nanoparticles and nanowires loaded into rod-shaped silica by a one-step procedure
- Source :
- Solid State Sciences, Solid State Sciences, Elsevier, 2017, 63, pp.23-29. ⟨10.1016/j.solidstatesciences.2016.11.005⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- International audience; Rod-shaped mesoporous silica nanoparticles (RMSN) with built-in gold nanoparticles or thin gold nanowires in the pore channels were in situ synthesized via a one-step procedure. The insertion of a hydrophobic gold precursor into the mesopores of RMSN was reached through a micellar solubilization mechanism and gold nanoparticles were achieved through a thermal reduction. The resulting RMSN and Au-RMSN samples were characterized by using X-ray diffraction, transmission and scanning microscopies (TEM and SEM), X-ray photoelectron spectroscopy (XPS), nitrogen physisorption and solid-state Nuclear Magnetic Resonance (NMR). The interaction of Au precursor (a carbene complex) with the thiol group at the silica surface was identified and found to play a crucial role in the dispersion of the uniform metal nanoparticles at the internal surface of RMSN. Moreover, TEM micrographs revealed the absence of large gold particles outside the mesopore network. The shape of Au nanoparticles and their loading amount in the mesoporous silica could be easily tuned by altering the concentration of gold precursor.
- Subjects :
- Materials science
Inorganic chemistry
Nanowire
Nanoparticle
02 engineering and technology
[CHIM.INOR]Chemical Sciences/Inorganic chemistry
010402 general chemistry
01 natural sciences
Physisorption
X-ray photoelectron spectroscopy
Gold carbene complex
[CHIM]Chemical Sciences
General Materials Science
Metallic nanowire
ComputingMilieux_MISCELLANEOUS
Rod-like mesoporous silica
General Chemistry
[CHIM.MATE]Chemical Sciences/Material chemistry
[CHIM.CATA]Chemical Sciences/Catalysis
Mesoporous silica
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
Colloidal gold
Micellar solubilization
0210 nano-technology
Mesoporous material
Dispersion (chemistry)
Subjects
Details
- Language :
- English
- ISSN :
- 12932558
- Database :
- OpenAIRE
- Journal :
- Solid State Sciences, Solid State Sciences, Elsevier, 2017, 63, pp.23-29. ⟨10.1016/j.solidstatesciences.2016.11.005⟩
- Accession number :
- edsair.doi.dedup.....fa519021d4a4bbe5e3f174772f1ab1a1