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A Polymer-Intercalated Modulation Assembly Strategy Towards Mesoporous Single-Crystalline BiVO4 Materials for

Wei Li1,2, Xiaoyan Wei3, Yumeng Mao1

  • 1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 27, 2026
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Summary

Researchers developed a new method to create porous single-crystalline bismuth vanadate (BiVO4) for enhanced photocatalysis. This material significantly boosts efficiency by reducing electron-hole recombination and improving catalytic activity.

Keywords:
mesoporous single‐crystalline structurephotocatalytic selective oxidationpolymer‐intercalated modulation assemblyvanadium vacancy microenvironment

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photocatalysis

Background:

  • Rapid recombination of photogenerated electron-hole pairs limits photocatalytic efficiency.
  • Porous single-crystalline BiVO4 offers potential for improved charge carrier dynamics and active sites.
  • Synthesizing such materials is challenging due to the complex interplay of kinetic and thermodynamic processes.

Purpose of the Study:

  • To develop a novel strategy for synthesizing mesoporous single-crystalline BiVO4 (MSC BiVO4) with tunable pore structures.
  • To investigate the role of polymer intercalation and modulation in controlling material morphology and properties.
  • To evaluate the photocatalytic performance of the synthesized material for the conversion of aromatic alcohols.

Main Methods:

  • A polymer-intercalated modulation assembly strategy using polyethyleneimine (PEI) and acetate ions.
  • Co-assembly of metal precursors with PEI and acetate to form an inorganic-organic composite.
  • Characterization techniques and theoretical calculations to analyze material structure and performance.

Main Results:

  • Successfully synthesized mesoporous single-crystalline BiVO4 (MSC BiVO4) with controlled pore structures.
  • Demonstrated that acetate ions modulate PEI's influence, preserving single-crystalline structure.
  • PEI acted as a porogen, creating a 3D mesoporous network.
  • Achieved 99% conversion and 99% selectivity for aromatic alcohol conversion with MSC-BiVO4-1800.
  • Attributed performance to single-crystalline nature, mesoporosity, and vanadium vacancy microenvironment.

Conclusions:

  • The polymer-intercalated modulation assembly strategy is effective for creating MSC BiVO4.
  • The synthesized MSC BiVO4 exhibits superior photocatalytic activity due to its unique structural features.
  • This approach provides a pathway for designing advanced photocatalysts with tailored properties.