concentration, the collision frequency of the formed particles increased and protection obtained by adsorption of surfactant molecules on the particles surface was weakened due to lower surfactant concentration compared to precursor concentration. Thus the tiny particles agglomerated to form larger particles. TEM analysis also confirmed same trend. Figure 4. Particle size distribution by DLS technique for Ru:Pd nanocolloids. X-ray diffraction analysis (XRD): The bimetallic nanoalloy catalyst of Ru-Pd/γ-Al2O3 (Figure 5) showed peaks at 2θ = 38.4° (100), 44.08° (101) for ruthenium metal particles (highlighted by of the crystal Δ) structure (JCPDS file no. 06-0663) and peak at 2θ = 51.2°(012) corresponding to palladium metal particles21 . Diffraction patterns are broad because of the small sizes of the colloidal nanoalloy particles. The presence of support material was γ-alumina confirmed by the characteristic peak at 2θ = 66.5° (highlighted by *) (JCPDS file No. Figure 5. XRD pattern for (3:1 % (w/w)) nanocatalyst. The bimetallic sample of Ru-Ni/γ-Al2O3 (Figure 6) nanoalloy catalyst also showed peaks for ruthenium metal particles at 2θ = 38.4° (100), 44.08° (101) (highlighted by Δ). Diffraction peaks around 2θ = 52.4° (200), and 75.6° (220) showed FCC structure of nickel (highlighted by The characteristic peak also confirmed the presence of support material •).
concentration, the collision frequency of the formed particles increased and protection obtained by adsorption of surfactant molecules on the particles surface was weakened due to lower surfactant concentration compared to precursor concentration. Thus the tiny particles agglomerated to form larger particles. TEM analysis also confirmed same trend. Figure 4. Particle size distribution by DLS technique for Ru:Pd nanocolloids. X-ray diffraction analysis (XRD): The bimetallic nanoalloy catalyst of Ru-Pd/γ-Al2O3 (Figure 5) showed peaks at 2θ = 38.4° (100), 44.08° (101) for ruthenium metal particles (highlighted by Δ) of the crystal structure (JCPDS file no. 06-0663) and peak at 2θ = 51.2°(012) corresponding to palladium metal particles21 . Diffraction patterns are broad because of the small sizes of the colloidal nanoalloy particles. The presence of support material γ-alumina was confirmed by the characteristic peak at 2θ = 66.5° (highlighted by *) (JCPDS file No. Figure 5. XRD pattern for (3:1 % (w/w)) nanocatalyst. The bimetallic sample of Ru-Ni/γ-Al2O3 (Figure 6) nanoalloy catalyst also showed peaks for ruthenium metal particles at 2θ = 38.4° (100), 44.08° (101) (highlighted by Δ). Diffraction peaks around 2θ = 52.4° (200), and 75.6° (220) showed FCC structure of nickel (highlighted by •). The characteristic peak also confirmed the presence of support material
MR363_0162F2.docx