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<p>Bisphenol A (BPA) is toxic and its outflow into the water bodies raised concern, and suitable water treatment is needed. Photocatalysis is a promising method nowadays to move towards green technology. The novel photocatalytic dual-layer hollow-fiber membrane (DLHF) combines copper (II) oxide–vanadium tetrasulfide (CuO–VS<sub>4</sub>) with a polyvinylidene fluoride (PVDF) membrane for efficient BPA removal both day and night. CuO and CuO–VS<sub>4</sub> were synthesized using sol–gel and hydrothermal methods, respectively, with varying hydrothermal times. PVDF/CuO–VS<sub>4</sub> DLHF photocatalytic membrane was fabricated using co-extrusion method by varying the ratio of CuO–VS<sub>4</sub>. Powdered catalyst and membranes were characterized using FESEM-EDX, XRD and AFM. CuO was synthesized at room temperature, while CuO–VS<sub>4</sub> synthesized at 12&#xa0;h hydrothermal time was chosen to be deposited into PVDF membrane matrix. The 0.25 PVDF/CuO–VS<sub>4</sub> DLHF shows a uniform CuO–VS<sub>4</sub> distribution, achieving 70.24% photodegradation and 73.19% BPA rejection, with 74.05% regeneration efficiency after three cycles. Energy storage capability shows 60.0% of BPA successfully rejected after 120&#xa0;min of analysis, and thus, PVDF/CuO–VS<sub>4</sub> DLHF is a preferential 3-in-1 function photocatalytic membrane for BPA degradation and rejection as well as a potential energy storage material for wastewater treatment with or without light.</p>

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PVDF/CuO–VS4 Dual-Layer Hollow Fiber Photocatalytic Membrane for Bisphenol A Removal with Energy Storage Capability

  • 期刊论文

  • 发表日期：

    2025年3月17日

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  • Hazirah Syahirah Zakria,
  • Mohd Hafiz Dzarfan Othman,
  • Suhaila Borhamdin,
  • Nurul Jannah Ismail,
  • Mukhlis A. Rahman,
  • Juhana Jaafar,
  • Mohd Hafiz Puteh,
  • Norbaya Hashim,
  • Nirmala Devi AP Kerisnan,
  • Nasehir Khan E. M. Yahaya,
  • Alias Idris,
  • Tonni Agustiono Kurniawan

摘要

Bisphenol A (BPA) is toxic and its outflow into the water bodies raised concern, and suitable water treatment is needed. Photocatalysis is a promising method nowadays to move towards green technology. The novel photocatalytic dual-layer hollow-fiber membrane (DLHF) combines copper (II) oxide–vanadium tetrasulfide (CuO–VS4) with a polyvinylidene fluoride (PVDF) membrane for efficient BPA removal both day and night. CuO and CuO–VS4 were synthesized using sol–gel and hydrothermal methods, respectively, with varying hydrothermal times. PVDF/CuO–VS4 DLHF photocatalytic membrane was fabricated using co-extrusion method by varying the ratio of CuO–VS4. Powdered catalyst and membranes were characterized using FESEM-EDX, XRD and AFM. CuO was synthesized at room temperature, while CuO–VS4 synthesized at 12 h hydrothermal time was chosen to be deposited into PVDF membrane matrix. The 0.25 PVDF/CuO–VS4 DLHF shows a uniform CuO–VS4 distribution, achieving 70.24% photodegradation and 73.19% BPA rejection, with 74.05% regeneration efficiency after three cycles. Energy storage capability shows 60.0% of BPA successfully rejected after 120 min of analysis, and thus, PVDF/CuO–VS4 DLHF is a preferential 3-in-1 function photocatalytic membrane for BPA degradation and rejection as well as a potential energy storage material for wastewater treatment with or without light.