Preparation and enhanced catalyst effect of assembled hydroxylapatite microsphere chains

Area of Science:

• Materials Science
• Nanotechnology
• Catalysis

Background:

• Hydroxyapatite (HAP) is a key biomaterial with potential applications in catalysis.
• Developing efficient and recyclable catalysts is crucial for environmental remediation.
• Nanostructured materials offer unique properties for advanced catalytic applications.

Purpose of the Study:

• To synthesize hydroxyapatite (HAP) assembled microsphere chains using a facile template method.
• To utilize these HAP microsphere chains as support materials for developing a composite catalyst.
• To evaluate the catalytic performance of the HAP/TiO2 composite for methyl orange degradation.

Main Methods:

• Cooperation template method for synthesizing HAP microsphere chains.
• Characterization using XRD, TEM, SEM, FT-IR, EDS, and BET.
• Synthesis of HAP/TiO2 composite catalyst and evaluation of methyl orange degradation.

Main Results:

• Successfully prepared HAP assembled microsphere chains with high surface area (20-35 micrometers).
• The HAP/TiO2 composite catalyst showed an enlarged bandgap for TiO2.
• Achieved a 150% increase in methyl orange degradation speed compared to TiO2 nanoparticles.
• Demonstrated easy separation and recyclability of the composite catalyst.

Conclusions:

• The facile synthesis of HAP microsphere chains provides a promising platform for catalyst development.
• The HAP/TiO2 composite catalyst exhibits superior efficiency and recyclability for methyl orange degradation.
• This approach offers an effective strategy for developing advanced catalytic materials for environmental applications.