Directional Charge Transfer in V-P-Ni 1D Chain for CO₂ Photoreduction and Mustard-Gas Simulant Detoxification

Area of Science:

• Materials Science
• Catalysis
• Nanotechnology

Background:

• Photocatalysis efficiency is limited by charge carrier recombination.
• Directed charge transfer is key to improving photocatalytic performance.
• Developing advanced materials is crucial for efficient heterogeneous photocatalysis.

Purpose of the Study:

• To synthesize and characterize novel phosphovanadate materials for photocatalysis.
• To investigate the role of structural modifications on photocatalytic activity.
• To evaluate the performance of synthesized materials in CO2 reduction and pollutant degradation.

Main Methods:

• Synthesis of organic ligand-modified phosphovanadate (VP-0D).
• Incorporation of transition metals to form a bimetallic coordination polymer (VPNi-1D).
• Characterization of material structure and photocatalytic performance under irradiation.

Main Results:

• VPNi-1D exhibits a 1D phosphorus-containing inorganic chain structure facilitating electron transfer.
• Achieved a CO production rate of 12399 μmol·g-1·h-1 with 93.6% selectivity for CO2 reduction.
• Demonstrated complete degradation of CEES to CEESO in 15 min at room temperature, indicating high oxidative activity.

Conclusions:

• The unique 1D structure of VPNi-1D significantly enhances photocatalytic CO2 reduction.
• VPNi-1D shows excellent stability and reusability over multiple cycles.
• The material's V-O bonds contribute to its potent oxidative capabilities for pollutant degradation.