Composition and structure of platinum-containing thin composite films prepared from silica sols

Шилова, О. А.; Gubanova, N. N.; Иванова, А. Г.; Arsent’ev, M. Yu.; Ukleev, Victor

doi:10.1134/s0036023617050230

Cited by 6 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Crystallites assemble into nanoparticles, which can form spatial agglomerates both on the surface and inside the film. The formation of agglomerates from Pt and Pt/Pd nanoparticles was previously observed in [11,23]. The structure and location of such agglomerates have an influence on the number of pores and their distribution in the silicate film.…”

Section: Effect Of the Synthesis Conditions On The Film Thicknessmentioning

confidence: 64%

Pt and Pd Nanoparticle Crystallization in the Sol-Gel-Derived Thin SiO2 Films

Gubanova,

Matveev,

Grebenshchikova

et al. 2023

Physchem

View full text Add to dashboard Cite

The crystallization and distribution the features of Pt, Pd and Pt/Pd nanoparticles in spin-on glass SiO2 films were studied within a wide range of the dopant concentrations in silica sol (from 10 to 80 mol.% Pt, Pd or Pt/Pd per 100 mol.% Si). The grazing incidence X-ray diffraction (GIXRD) characterization revealed that the formation of 4–8 nm sized crystalline Pt, Pd and Pt/Pd nanoparticles in SiO2 films began at the dopant concentrations of at least 10 mol.% Pt and/or Pd per 100 mol.% Si. The nanoparticles obtained from sols with the lower Pt, Pd or Pt/Pd concentrations were characterized by an amorphous structure. The dopants distribution over the film thickness (~21–47 nm) was studied using X-ray reflectometry. The effect of the dopant concentration, spin-coating modes and heat treatment temperature on the film thickness was characterized. When only one of the dopants (Pt or Pd) was introduced into the silica sol, the resulting nanoparticles were preferentially localized close to the film surface. When dopants were used together, the Pt/Pd nanoparticles were distributed more evenly.

show abstract

Section: Effect Of the Synthesis Conditions On The Film Thicknessmentioning

confidence: 64%