Synthesis, Characterization, Uses and Applications of Porous Clays Heterostructures: A Review

Area of Science:

• Materials Science
• Nanotechnology
• Clay Science

Background:

• Porous clay heterostructures (PCH) are synthesized by templating smectite clays with organic cations.
• Pillaring with oxides, primarily silica, creates porosity after template removal.
• The structure and properties of PCH are influenced by clay ordering and organic cation choice.

Purpose of the Study:

• To review the synthesis, characterization, and applications of porous clay heterostructures (PCH).
• To highlight the role of synthesis parameters in modulating PCH properties.
• To explore the potential of PCH in adsorption and catalysis.

Main Methods:

• Review of literature on PCH synthesis and characterization techniques.
• Analysis of methods for incorporating heteroatoms into pillars.
• Compilation of reported applications in adsorption and catalysis.

Main Results:

• PCH synthesis involves organic cation intercalation and oxide pillaring.
• Textural properties and acidity of PCH can be precisely modulated.
• Heteroatom incorporation offers further control over PCH properties.

Conclusions:

• Porous clay heterostructures are versatile materials with tunable properties.
• Their unique characteristics make them suitable for diverse adsorption and catalysis applications.
• Further research into PCH synthesis and functionalization holds significant promise.