Figure 1.
XRD patterns of NiMoO4 samples produced at different calcination temperatures; (α) α-NiMoO4; (β) β-NiMoO4, (*): MoO2, (♦) MoO3, and (Δ) NiO. Calcination time: 6 h, pH = 4.57, and fuel-to-oxidant ratio φ = 1.
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