Abstract
The fine, stable and homogeneous colloid palladium for activation treatment on the surface of PPTA fibers has been successfully prepared via a simple process. Microstructure characterization indicated that the mean diameter of nanoparticle in two different areas was about 12 nm, and the size distribution of colloid palladium nanoparticle was relatively uniform. Chemical phase analysis confirmed that colloid palladium was amorphous phase. Chemical element and valence results demonstrated that colloid palladium consisted mainly of palladium, tin and chlorine, which was a shell-core structure with tin and chlorine as protective shell and palladium as activation core via TEM, XPS, SEM and EDS characterization. Meanwhile, we found that the colloid palladium nanoparticle could be adsorbed tightly to the surface of PPTA fibers which was mainly attributed to the PdN bond via XPS and UV–Vis measurement. In addition, a possible formation mechanism of colloid palladium was proposed, which included nucleation stage, cation adsorption stage, anion adsorption stage.
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