Morphologically tailored facet dependent silver nanoparticles supported α-Al2O3 catalysts for chemoselective reduction of aromatic nitro compounds

Low-Temperature Total Oxidation of Propane Using Silver-Decorated MnO2 Nanorods

“…Similarly, XPS was also employed to analyze the oxidation state of Ag in the 1Ag/MnO 2 NR nanocatalyst. The Ag 3d 5/2 and Ag 3d 3/2 core level binding energies appeared at 367.95 and 374.1 eV and were found to be similar to those of bare AgNPs without any significant shift in peaks (Figure S5), confirming the presence of metallic silver nanoparticles …”

“…X-ray photoelectron spectroscopy (XPS) analysis was performed to examine the oxidation state and chemical environment of Ag in AgNPs at the Ag 3d core levels. Figure e shows the core level spectrum of metallic AgNPs, which exhibits the presence of two deconvoluted peaks at 367.95 and 374.1 eV corresponding to Ag 3d 5/2 and Ag 3d 3/2 , respectively . Additionally, the synthesized AgNPs were characterized using UV–vis spectroscopy, wherein the surface plasmon resonance peak at 440 nm confirms the metallic character of the synthesized AgNPs …”

“…Figure 1e shows the core level spectrum of metallic AgNPs, which exhibits the presence of two deconvoluted peaks at 367.95 and 374.1 eV corresponding to Ag 3d 5/2 and Ag 3d 3/2 , respectively. 33 Additionally, the synthesized AgNPs were characterized using UV−vis spectroscopy, wherein the surface plasmon resonance peak at 440 nm confirms the metallic character of the synthesized AgNPs. 33 P-XRD analysis was used to determine the phase purity and crystallinity of the synthesized MnO 2 NRs (Figure S4a,b).…”

“…33 Additionally, the synthesized AgNPs were characterized using UV−vis spectroscopy, wherein the surface plasmon resonance peak at 440 nm confirms the metallic character of the synthesized AgNPs. 33 P-XRD analysis was used to determine the phase purity and crystallinity of the synthesized MnO 2 NRs (Figure S4a,b). The P-XRD patterns of the synthesized MnO 2 NRs portray clearly defined diffraction peaks that are consistent with the crystalline phases of α-MnO 2 NRs reported from JCPDS data (card no.…”

“…The Ag 3d 5/2 and Ag 3d 3/2 core level binding energies appeared at 367.95 and 374.1 eV and were found to be similar to those of bare AgNPs without any significant shift in peaks (Figure S5), confirming the presence of metallic silver nanoparticles. 33 Fourier transform infrared spectroscopy (FT-IR) analysis presented in Figure S5b clearly represents Mn−O vibrations of octahedral MnO 6 in MnO 2 NRs, which are denoted by the bands below 750 cm −1 at around 709.9, 528.6, and 470.3 cm −1 . The FT-IR spectral analysis also ensures high structural symmetry of α-MnO 2 NRs.…”