Synthesis of PVDF-B4C mixed matrix membrane for ultrafiltration of protein and photocatalytic dye removal,Journal of Applied Polymer Science

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Synthesis of PVDF-B4C mixed matrix membrane for ultrafiltration of protein and photocatalytic dye removal
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-09-14 , DOI: 10.1002/app.51663
Yuanyuan Ouyang ₁ , Tunmise Ayode Otitoju _{2,

3} , Dafu Jiang ₁ , Sanxi Li ₁ , Noor Fazliani Shoparwe ₃ , Song Wang ₁ , Ailing Zhang ₁

Affiliation

In this work, polyvinylidene fluoride-boron carbide mixed matrix membranes were synthesized via phase inversion method. The synthesized membranes were characterized using field emission scanning electron microscopy, X-ray diffraction spectroscopy, energy dispersive spectroscopy, porosity, and contact angle. The mixed matrix membranes (0–5 wt.% of boron carbide) were tested for ultrafiltration of bovine serum albumin solution and photodegradation property using rhodamine B and methylene blue dyes. The morphological images reveal the existence of boron carbide particles on the surface of the membranes. Upon introduction of B₄C particles, the performance of the membranes was improved: permeate flux increases from 163.13 to 351.15 L/m² h; bovine serum albumin rejection increased from 77.1% to 99.1%; relative flux reduction decreased from 45.58% to 16.06%; flux recovery ratio increased from 61.71% to 98.42%. Furthermore, maximum photodegradation yield was observed for membranes with 4 wt.% boron carbide particles with degradation efficiency of 96.7% and 96% for rhodamine B and methylene blue dyes, respectively. Furthermore, the rate constant of the optimum membrane was higher than the pristine membrane (about 2.05 and 2.26 times higher for rhodamine B and methylene blue dyes, respectively). Indeed, the mixed matrix membranes present a great prospect for the photodegradation of organic dyes.

中文翻译：

用于蛋白质超滤和光催化染料去除的PVDF-B4C混合基质膜的合成

在这项工作中，聚偏二氟乙烯-碳化硼混合基质膜是通过相转化法合成的。使用场发射扫描电子显微镜、X 射线衍射光谱、能量色散光谱、孔隙率和接触角对合成的膜进行表征。使用罗丹明 B 和亚甲蓝染料测试混合基质膜（0-5 wt.% 的碳化硼）对牛血清白蛋白溶液的超滤和光降解性能。形态图像揭示了膜表面存在碳化硼颗粒。引入 B ₄ C 颗粒后，膜的性能得到改善：渗透通量从 163.13 增加到 351.15 L/m ²H; 牛血清白蛋白排斥率从 77.1% 增加到 99.1%；相对通量减少从 45.58% 下降到 16.06%；焊剂回收率从61.71%提高到98.42%。此外，对于含有 4 wt.% 碳化硼颗粒的膜，观察到最大的光降解产率，对罗丹明 B 和亚甲蓝染料的降解效率分别为 96.7% 和 96%。此外，最佳膜的速率常数高于原始膜（罗丹明 B 和亚甲蓝染料分别高约 2.05 和 2.26 倍）。事实上，混合基质膜为有机染料的光降解提供了广阔的前景。

更新日期：2021-09-15

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