Details
| Original language | English |
|---|---|
| Pages (from-to) | 17239-17247 |
| Number of pages | 9 |
| Journal | Journal of Physical Chemistry C |
| Volume | 116 |
| Issue number | 32 |
| Publication status | Published - 16 Aug 2012 |
| Externally published | Yes |
Abstract
We report on a new method of preparation of Ag N-TiO 2 nanoparticulate coatings with stable and highly reproducible morphology. The silver nanoparticles are grown on monolayer titanium-oxo-alkoxy nanoparticulate coatings by silver ions reduction at UV-A light illumination. Their size and surface number density increase with the irradiation time. The AFM and high-resolution SEM and TEM measurements of height (h) and lateral size (D) of the silver nanoparticles show that their shape approaches spherical segment with h/D = 1/4 at long irradiation times. The size correspondent to the maximum of the particles size distribution curve tends to D = 12 nm with half width at full-maximum ΔD = 4 nm. The evaluation of the deposited silver mass results in the quantum yield of the deposition process close to 100% at the process beginning and the atomic surface density of N Ag = 1.25 × 10 7 at/μm 2 at the process saturation. The absorption spectra of the surface plasmon shift from 425 to 525 nm. The spectra are successfully modeled assuming small dispersion of the oblate particle shape asymmetry Δ(h/D) ≈ 0.25 and surface number density below 2500 part/μm 2. Mutual interaction between the silver particles is shown to weakly affect the spectra. Two-photon photoluminescence images of the composite nanocoatings show the characteristic hot-spot pattern of surface plasmons.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Energy(all)
- General Energy
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Surfaces, Coatings and Films
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Journal of Physical Chemistry C, Vol. 116, No. 32, 16.08.2012, p. 17239-17247.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Growth of Silver Nanoclusters on Monolayer NanoparticulateTitanium-oxo-alkoxy Coatings
AU - Jia, Zixian
AU - Ben Amar, Mounir
AU - Brinza, Ovidiu
AU - Astafiev, Artyom
AU - Nadtochenko, Viktor
AU - Evlyukhin, Andrey B.
AU - Chichkov, Boris N.
AU - Duten, Xavier
AU - Kanaev, Andrei
PY - 2012/8/16
Y1 - 2012/8/16
N2 - We report on a new method of preparation of Ag N-TiO 2 nanoparticulate coatings with stable and highly reproducible morphology. The silver nanoparticles are grown on monolayer titanium-oxo-alkoxy nanoparticulate coatings by silver ions reduction at UV-A light illumination. Their size and surface number density increase with the irradiation time. The AFM and high-resolution SEM and TEM measurements of height (h) and lateral size (D) of the silver nanoparticles show that their shape approaches spherical segment with h/D = 1/4 at long irradiation times. The size correspondent to the maximum of the particles size distribution curve tends to D = 12 nm with half width at full-maximum ΔD = 4 nm. The evaluation of the deposited silver mass results in the quantum yield of the deposition process close to 100% at the process beginning and the atomic surface density of N Ag = 1.25 × 10 7 at/μm 2 at the process saturation. The absorption spectra of the surface plasmon shift from 425 to 525 nm. The spectra are successfully modeled assuming small dispersion of the oblate particle shape asymmetry Δ(h/D) ≈ 0.25 and surface number density below 2500 part/μm 2. Mutual interaction between the silver particles is shown to weakly affect the spectra. Two-photon photoluminescence images of the composite nanocoatings show the characteristic hot-spot pattern of surface plasmons.
AB - We report on a new method of preparation of Ag N-TiO 2 nanoparticulate coatings with stable and highly reproducible morphology. The silver nanoparticles are grown on monolayer titanium-oxo-alkoxy nanoparticulate coatings by silver ions reduction at UV-A light illumination. Their size and surface number density increase with the irradiation time. The AFM and high-resolution SEM and TEM measurements of height (h) and lateral size (D) of the silver nanoparticles show that their shape approaches spherical segment with h/D = 1/4 at long irradiation times. The size correspondent to the maximum of the particles size distribution curve tends to D = 12 nm with half width at full-maximum ΔD = 4 nm. The evaluation of the deposited silver mass results in the quantum yield of the deposition process close to 100% at the process beginning and the atomic surface density of N Ag = 1.25 × 10 7 at/μm 2 at the process saturation. The absorption spectra of the surface plasmon shift from 425 to 525 nm. The spectra are successfully modeled assuming small dispersion of the oblate particle shape asymmetry Δ(h/D) ≈ 0.25 and surface number density below 2500 part/μm 2. Mutual interaction between the silver particles is shown to weakly affect the spectra. Two-photon photoluminescence images of the composite nanocoatings show the characteristic hot-spot pattern of surface plasmons.
UR - http://www.scopus.com/inward/record.url?scp=84865142802&partnerID=8YFLogxK
U2 - 10.1021/jp303356y
DO - 10.1021/jp303356y
M3 - Article
AN - SCOPUS:84865142802
VL - 116
SP - 17239
EP - 17247
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 32
ER -