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Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

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Constructing a High-Efficiency MoO3/Polyimide Hybrid Photocatalyst Based on Strong Interfacial Interaction.

Chenghai Ma^1,2, Jun Zhou¹, Haoyue Zhu³

¹†Eco-materials and Renewable Energy Research Center (ERERC), School of Chemistry and Chemical Engineering, National Laboratory of Solid State Microstructures, Kunshan Innovation Institute of Nanjing University, Jiangsu Key Laboratory for Nanotechnology, Nanjing 210093, People's Republic of China.

ACS Applied Materials & Interfaces

|June 26, 2015

Summary

Researchers developed a novel black molybdenum oxide/polyimide (BMO/PI) hybrid photocatalyst. This efficient material enhances visible light absorption and charge separation for improved photocatalytic activity.

Keywords:

degradation hybrid photocatalyst molybdenum trioxide polyimide visible light irradiation

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Area of Science:

Materials Science
Nanotechnology
Photocatalysis

Background:

Developing efficient photocatalysts is crucial for addressing environmental pollution and energy demands.
Hybrid organic-inorganic semiconductor materials offer unique properties for advanced applications.

Purpose of the Study:

To synthesize a novel two-dimensional hybrid polymer photocatalyst, black molybdenum oxide/polyimide (BMO/PI).
To investigate the structural, optical, and photocatalytic properties of the synthesized BMO/PI material.

Main Methods:

One-pot thermopolymerization of ammonium molybdate and thiourea with polyimide precursors.
Characterization using X-ray photoelectron spectroscopy, electron paramagnetic resonance, Fourier transform infrared, UV-vis, and photoluminescence spectroscopy.

Main Results:

Successful synthesis of BMO/PI with enhanced crystallinity and strong BMO-PI interaction via Mo-N coordination bonds.
Formation of a significant number of Mo5+ cations within the BMO/PI structure.
Improved visible light absorption and enhanced photogenerated electron/hole separation efficiency.

Conclusions:

The novel BMO/PI hybrid material exhibits superior photocatalytic activity due to enhanced light absorption and charge separation.
This work presents a new strategy for designing efficient inorganic-organic hybrid semiconductor photocatalysts.