4.7 Article

Modification strategies of polyacrylonitrile ultrafiltration membrane using TiO2 for enhanced antifouling performance in water treatment

期刊

出版社

ELSEVIER
DOI: 10.1016/j.seppur.2022.120500

关键词

Polyacrylonitrile; Titanium oxide; Ultrafiltration; Fouling; Photocatalysis

资金

  1. RFBR, Sirius University of Science and Technology, JSC Russian Railways and Educational Fund Talent and success [20-38-51022]

向作者/读者索取更多资源

This study focuses on improving the performance of polyacrylonitrile (PAN) membranes in ultrafiltration through the introduction of TiO2 particles. Different methods of TiO2 immobilization have varying effects on the structure and performance of PAN membranes.
The active application of ultrafiltration in various industries requires the development of novel membranes with tailored properties and good fouling resistance. This work is devoted to the improvement of ultrafiltration properties of polyacrylonitrile (PAN) membranes by various TiO2 modification approaches: (1) ex situ method -the introduction of pre-formed micro-or nanoparticles; (2) in situ method -the formation of TiO2 particles in the casting solution; and (3) surface modification method-dynamic deposition of TiO2 on the membrane surface. The effect of the various TiO2 immobilization techniques on the structure of PAN membranes was studied by scanning electron and atomic force microscopies, and the contact angle measurements. The introduction of TiO2 particles improved membrane performance and antifouling stability under UV irradiation in ultrafiltration of industrially important feeds -bovine serum albumin solution (BSA) and coolant lubricant emulsion. The affinity to water of TiO2-modified PAN membrane was confirmed by atomistic molecular dynamics simulations, swelling experiments, and calorimetric study of wetting. PAN membrane with 0.5 wt% TiO2 nanoparticles had the optimal transport characteristics and improved surface self-cleaning ability after UV irradiation: pure water, coolant lubricant, and BSA fluxes (849, 38, and 68 L/(m(2)h), respectively), and flux recovery ratio after UV-illumination (95%).

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据