通过混入超滤聚砜膜对锐钛矿型和金红石型TiO纳米颗粒过滤性能差异的新认识。

New Understanding of the Difference in Filtration Performance between Anatase and Rutile TiO Nanoparticles through Blending into Ultrafiltration PSF Membranes.

作者信息

Birsan Iulian-Gabriel, Pintilie Stefan Catalin, Pintilie Laurentia Geanina, Lazar Andreea Liliana, Circiumaru Adrian, Balta Stefan

机构信息

Department of Applied Sciences, Cross-Border Faculty, Dunarea de Jos University of Galati, 111th Domneasca Street, 800201 Galati, Romania.

Department of Materials and Environmental Engineering, Faculty of Engineering, Dunarea de Jos University of Galati, 111th Domneasca Street, 800201 Galati, Romania.

出版信息

Membranes (Basel). 2021 Oct 29;11(11):841. doi: 10.3390/membranes11110841.

DOI:10.3390/membranes11110841

PMID:34832069

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8625676/

Abstract

The blending of nanomaterials into a polymeric matrix is a method known for its ability, under certain circumstances, to lead to an improvement in membrane properties. TiO nanoparticles have been used in membrane research for the last 20 years and have continuously shown promise in this field of research. Polysulfone (PSf) membranes were obtained through the phase inversion method, with different TiO nanoparticle concentrations (0, 0.1, 0.5, and 1 wt.%) and two types of TiO crystalline structure (anatase and rutile), via the addition of commercially available nanopowders. Research showed improvement in all studied properties. In particular, the 0.5 wt.% TiO rutile membrane recorded an increase in permeability of 139.7% compared to the control membrane. In terms of overall performance, the best nanocomposite membrane demonstrated a performance index increase of 71.1% compared with the control membrane.

摘要

在某些情况下，将纳米材料混入聚合物基体是一种能改善膜性能的方法。在过去20年里，TiO纳米颗粒一直被用于膜研究，并在该研究领域不断展现出前景。通过相转化法，添加市售纳米粉末，制备了具有不同TiO纳米颗粒浓度（0、0.1、0.5和1 wt.%）以及两种TiO晶体结构（锐钛矿型和金红石型）的聚砜（PSf）膜。研究表明，所有研究的性能均有所改善。特别是，与对照膜相比，0.5 wt.% TiO金红石型膜的渗透率提高了139.7%。就整体性能而言，最佳纳米复合膜的性能指数比对照膜提高了71.1%。