Molybdenum trioxide (MoO3) was synthesized by dissolving 10 g of ammonium heptamolybdate ((NH4)6Mo7O24·4H2O, Carlo Erba, purity 99.0%) in 50 mL of deionized water. Subsequently,
the resultant solution was heated and stirred at 110 °C until
a solid powder formed. The obtained solid was combusted at 350 °C
for 2 h. Finally, the obtained sample was calcined at 500 °C
for 5 h in stagnant air.
The various Pt loadings (0.5–3%)
decorated on as-prepared MoO3 catalysts were prepared by
an incipient wetness impregnation method using the corresponding Pt
precursor as 3.4 wt % diamminedinitritoplatinum(II) in dilute ammonium
hydroxide (Sigma Aldrich). The samples were dried at 110 °C after
impregnation overnight and subsequently calcined at 500 °C for
5 h in stagnant air.
the resultant solution was heated and stirred at 110 °C until
a solid powder formed. The obtained solid was combusted at 350 °C
for 2 h. Finally, the obtained sample was calcined at 500 °C
for 5 h in stagnant air.
The various Pt loadings (0.5–3%)
decorated on as-prepared MoO3 catalysts were prepared by
an incipient wetness impregnation method using the corresponding Pt
precursor as 3.4 wt % diamminedinitritoplatinum(II) in dilute ammonium
hydroxide (Sigma Aldrich). The samples were dried at 110 °C after
impregnation overnight and subsequently calcined at 500 °C for
5 h in stagnant air.