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Figure 1

From: Sonication accelerated formation of Mg-Al-phosphate layered double hydroxide via sol-gel prepared mixed metal oxides

Figure 1

Typical XRD patterns of the products obtained after hydration of MMO resulted in formation of Mg2Al-OH LDH (a–c) and subsequent hydroxide-to-chloride (e,d) and chloride-to-phosphate (f,g) anion exchanges conducted in different conditions: (a) at room temperature for 24 h - Mg2Al-OH(25°C/24h), (b) at 80 °C for 2 h - Mg2Al-OH(80°C/2h) (c) with ultrasound applied for 30 min - Mg2Al-OH(Sonic/30min), (d) at room temperature for 15 min - Mg2Al-Cl(25°C/15min), (e) with ultrasound applied for 4 min - Mg2Al-Cl(Sonic/4min), (f) at room temperature for 1 h - Mg2Al-HxPO4(25°C/1h) and (g) with ultrasound applied for 8 min - Mg2Al-HxPO4 (Sonic/8min). Inset: basal spacing values (in nm) of the respective LDH phases

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