A Dual-Functional Bi₃TiNbO₉/Bi₂MoO₆ Heterojunction for Simultaneous Environmental Remediation and CO₂ Photoreduction

Area of Science:

• Materials Science
• Environmental Chemistry
• Catalysis

Background:

• Addressing energy crisis and environmental pollution requires advanced photocatalysts.
• Developing versatile materials is key for sustainable solutions.

Purpose of the Study:

• To synthesize and characterize a novel Bi3TiNbO9/Bi2MoO6 (BTNO/BMO) heterojunction.
• To evaluate the photocatalytic performance of the BTNO/BMO composite for environmental applications and fuel production.

Main Methods:

• Solvothermal synthesis method for fabricating the BTNO/BMO heterojunction.
• Advanced characterization techniques to verify the heterostructure.
• Testing photocatalytic degradation of tetracycline, removal of nitric oxide (NO), and reduction of carbon dioxide (CO2).

Main Results:

• Successful synthesis of the BTNO/BMO heterostructure confirmed by characterization.
• Achieved 90.2% degradation of tetracycline.
• Demonstrated efficient removal of gaseous NO and CO2 reduction to CO (51.3 μmol·g-1).
• Type-II heterojunction effectively suppressed charge recombination, enhancing photocatalytic activity.

Conclusions:

• The BTNO/BMO heterojunction exhibits superior dual-functional photocatalytic activity.
• This material offers a promising platform for simultaneous environmental purification and sustainable fuel production.
• The study provides a strategic design concept for developing advanced photocatalysts for sustainable technology.