Water-Regulated Formation of Asymmetric Janus-Like CeO 2 Nanoparticles with Increased Specific Surface Area

Key Points

• This research aims to explore the formation of Janus-like CeO2 nanoparticles and their specific surface area enhancement.
• Fabrication of asymmetric Janus-like CeO2 nanoparticles using a water-regulated process.
• Comparison of specific surface area with sea-urchin-like nanoparticles.
• Investigation of structural defects and Ostwald ripening mechanisms.
• Janus-like nanoparticles exhibit a specific surface area increase by approximately 75.9% over sea-urchin-like structures.
• The formation process involves a combination of Ostwald ripening and shell collapse.