二氧化钛涂层在氧化铝膜上用于染料的连续分离

IF 2.4 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Surface Engineering Pub Date : 2023-01-02 DOI:10.1080/02670844.2023.2193003

X. Y. Li, J. Gong, J. H. Ma

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引用次数: 0

摘要

摘要陶瓷膜具有耐腐蚀性、高温适用性和可重复使用性等特点，特别适用于废水处理。在本研究中，通过水热反应在氧化铝（Al2O3）膜表面制备了二氧化钛（TiO2），并研究了影响其形貌的因素。SEM图像显示针状TiO2晶体填充了膜表面的孔隙。以刚果红染料为模型有机污染物，研究了TiO2涂层氧化铝膜的光催化活性和连续分离性能。结果表明，在120 h连续过滤试验。此外，我们提出了一种基于光催化降解TiO2晶体的简单、低成本的膜再生方法。再生膜仍表现出良好的连续过滤能力，在染料废水处理中具有良好的应用潜力。

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Tio2 coating on alumina membranes for continuous separation of dyes

ABSTRACT Ceramic membranes characterised by corrosion resistance, high-temperature applicability, and reusability are especially suitable for wastewater treatment. In this research, Titania dioxide (TiO2) was fabricated on surfaces of alumina (Al2O3) membranes by hydrothermal reaction and factors that influenced their morphologies were investigated. SEM images showed needle-like TiO2 crystals filling up the pores on the membrane surfaces. We investigated the photocatalytic activity and continuous separation performance of the TiO2 coating alumina membranes using Congo red dye as a model organic pollutant. The results showed that the dye removal ratio remained at about 98% in a 120 h continuous filtration test. Furthermore, we proposed an easy and low-cost membrane regeneration method based on the photocatalytic degradation of TiO2 crystals. The regenerated membrane still showed excellent continuous filtration ability, indicating the good potential application in the treatment of dye effluents.

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来源期刊

Surface Engineering 工程技术-材料科学：膜

CiteScore

5.60

自引率

14.30%

发文量

审稿时长

2.3 months

期刊介绍： Surface Engineering provides a forum for the publication of refereed material on both the theory and practice of this important enabling technology, embracing science, technology and engineering. Coverage includes design, surface modification technologies and process control, and the characterisation and properties of the final system or component, including quality control and non-destructive examination.