Surface faceting of gold nanoparticles and adsorption of organic macromolecules |
| |
| Authors: | A I Loskutov O Ya Uryupina V V Vysotskii V I Roldughin |
| |
| Institution: | (1) Institute of Catalysis, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;(2) Institute of New Catalytic Materials Science, College of Chemistry, Nankai University, Tianjin, 300071, People’s Republic of China;(3) School of Chemical Engineering, Hebei University of Technology, Tianjin, 300130, People’s Republic of China;(4) Laboratory of Inorganic Materials Chemistry, The University of Namur (FUNDP), 5000 Namur, Belgium |
| |
| Abstract: | Dispersions of nanosized gold particles are synthesized in methyl hydroxyethyl-, carboxymethyl-, and hydroxy propylmethyl
cellulose solutions by chemical reduction. Sizes of nanoparticles are determined using dynamic light scattering method. Ultrathin
particle layers are prepared on the surfaces of polycrystalline gold films by self-organization technique. Characteristics
of these layers and constituting particles are determined by scanning tunnel microscopy. It is shown that steps with heights
of 0.7–4 nm and terraces are formed on nanoparticles. It is revealed that the height of a step depends to a greater extent
on the chemical nature of employed reducer (tannin or formaldehyde) than on the nature of stabilizer (cellulose derivatives).
Components of dispersion medium are selectively adsorbed on these steps. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
