| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Preparation of PVDF-HFP Flexible Piezo-photocatalytic Membrane and Its Catalytic Performance |
| DONG Chen1,†, MA Zequn2,†, ZHANG Zhiran1, WANG Qinghui1, ZHANG Yi1,*, DONG Yanmao1,*
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1 School of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
2 Schoolof Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China |
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Abstract Among various water pollution treatment strategies, the piezo-photocatalytic approach has emerged as a promising synergistic methodology. A flexible h-BN/TiO2/PVDF-HFP composite membrane was fabricated through solvothermal synthesis of h-BN/TiO2 nanoparticles followed by phase-inversion integration with PVDF-HFP, the photocatalytic, piezoelectric catalytic and piezo-photocatalytic degradation of RhB were stu-died. Under simultaneous light irradiation and mechanical vibration, the membrane containing 8wt% h-BN/TiO2 achieved 94.53% RhB degradation within 120 min, significantly outperforming standalone photocatalytic (58.83%) and piezocatalytic (63.75%) processes. Mechanistic studies indicate that the piezoelectric polarization of PVDF-HFP establishes a built-in electric field, which synergistically suppresses charge recombination in the h-BN/TiO2 nanoparticles and enhances redox kinetics to boost reactive oxygen species (·O2- and ·OH) generation. Furthermore, the composite membrane also demonstrated excellent reusability and stability without secondary contamination.
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Published:
Online: 2026-04-16
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2026, Vol. 40 
