Parameters
Methyl orange
Congo red
Synonym
54
7-58-0 Orange III
Direct red 28
Molecular Weight
327.33g/mol
696.665g/mol
Molecular formula
C14H14N3O3SNa
C32H22N6Na2O6S2
Type
Acid dye
Acid-Basic Indicator
λmax
460-470 nm
497-498 nm
Solubility in water
Soluble
Table 1: Materials utilized to synthesize PPGs
Figure 1: Figure 1: XRD patterns of F-NiO
Figure 3: TEM micrographs of F-NiO
Figure 4: (a) N2 adsorption/desorption isotherms and (b) BJH pore size distribution plots of flower-like NiO nanocrystals
Figure 5: XRD patterns of (a) 2 wt% Cu/F-NiO (b) 2 wt%Pd/F-NiO and (c) 2 wt% Pd1Cu1/F-NiO
Figure 6: (a) FE-SEM of the Pd1Cu1/F-NiO and EDAX mapping analysis of (b) Pd and (c) Cu in the Pd1Cu1/F-NiO
Catalyst
Pd (wt%)
Cu (wt%)
Pd:Cu (at.)
Pd /F-NiO
1.93
0
Cu/F-NiO
1.85
Pd1Cu1/F-NiO
1.12
0.96
1
Table 1: Pd and Cu Content (wt %) in Catalysts and the Ratio of Pd and Cu Determined by ICP-MS analysis
Figure 7: TEM (a) and HRTEM (b, c) images of Pd1Cu1/F-NiO
Figure 8: Catalytic performance of CO oxidation over the catalysts
Figure 9: Catalytic performance of CO oxidation over the catalysts
Scheme 1: The reaction process of Pd1Cu1/F-NiO
Tables at a glance
Figures at a glance