Mechanistic insights into the acetate-accelerated synthesis of crystalline ceria nanoparticles

Abstract

Lithium acetate was reported to accelerate the growth of crystalline ceria nanoparticles in ozone-mediated synthesis through promoting alcohol-like condensation reactions.

Phytotoxic Effect of sub‐3‐nm Crystalline Ceria Nanoparticles on the Hydroponic Growth of Daikon Radish Microgreens

“…The hydrodynamic diameters of ceria NPs were measured to have an average value of 96.9 nm, a mode value of 73 nm, and a standard deviation of 53 nm (Figure S1). The Raman spectrum of the ceria NPs confirmed the fluorite structure of ceria represented by the F 2g peak at 460 cm −1 [24] . The structure defect (D) peak was identified at 590 cm −1 (Figure S2).…”

“…Sub‐3‐nm crystalline ceria NPs were prepared by using an ozone‐mediated synthesis method reported by our group [18,24] . Briefly, to synthesize the ceria NPs, 0.5 g of Ce(NO 3 ) 3 ⋅ 6H 2 O (1.1 mmol) was dissolved in 20 mL of 200‐proof ethanol.…”

“…Sub-3-nm crystalline ceria NPs were prepared by using an ozonemediated synthesis method reported by our group. [18,24] Briefly, to synthesize the ceria NPs, 0.5 g of Ce(NO 3 ) 3 • 6H 2 O (1.1 mmol) was dissolved in 20 mL of 200-proof ethanol. Ozone (0.5 g/hour) was bubbled through the ethanol-salt solution for 30 minutes, resulting in a reddish color of the reaction mixture.…”

“…The Raman spectrum of the ceria NPs confirmed the fluorite structure of ceria represented by the F 2g peak at 460 cm À 1 . [24] The structure defect (D) peak was identified at 590 cm À 1 (Figure S2). The ATR-FTIR spectrum of the ceria NPs revealed vibrational signatures of functional groups that suggest the presence of water, ethanol, and acetate functional groups on the surface of ceria NPs (Figure S3).…”