Innovative TiO2-doped polyvinyl alcohol sponge for efficient oil–water separation and dye degradation in wastewater treatment

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL Chemical Engineering Science Pub Date : 2024-06-20 DOI:10.1016/j.ces.2024.120389

Linhan Mao, Yue Lian, Yulin Ma, Congcong Cui, Zhaoxia Chen, Yuhong Zhang

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Abstract

Regular problems faced due to oil spills and soluble contaminants have increasingly caused serious water pollution. Therefore, there is an urgent need to develop efficient strategies to purify wastewater. This study aims to formulate a synergistic treatment technology of sorption and ultraviolet light catalysis for oil–water separation and degradation of dyes in wastewater. In this study, TiO₂ doped PVF sponge (DTMS-TiO₂@PVF) was prepared with a water contact angle of 151.5° and a removal rate of 98.86 % of MB in 120 min. Meanwhile, DTMS-TiO₂@PVF sponge could easily realize the selective separation of oil–water mixtures. Its saturated sorption capacity for oil and organic solvent was 4.13–10.05 g/g. In addition, DTMS-TiO₂@PVF sponge had better environmental stability, which could withstand chemical corrosion (acid, alkaline, and salt solutions). Therefore, DTMS-TiO₂@PVF sponge showed great potential for application as an efficient oil–water separation and photocatalytic material, especially in the field of treating oil wastewater and water purification.

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创新性掺杂 TiO2 的聚乙烯醇海绵用于废水处理中的高效油水分离和染料降解

由于石油泄漏和可溶性污染物造成的经常性问题，水污染日益严重。因此，迫切需要开发高效的废水净化策略。本研究旨在开发一种吸附和紫外光催化协同处理技术，用于废水中的油水分离和染料降解。本研究制备了掺杂 TiO2 的 PVF 海绵（DTMS-TiO2@PVF），其水接触角为 151.5°，120 分钟内 MB 的去除率为 98.86%。同时，DTMS-TiO2@PVF 海绵可轻松实现油水混合物的选择性分离。它对油和有机溶剂的饱和吸附容量为 4.13-10.05 g/g。此外，DTMS-TiO2@PVF 海绵还具有更好的环境稳定性，可耐化学腐蚀（酸、碱和盐溶液）。因此，DTMS-TiO2@PVF 海绵作为一种高效的油水分离和光催化材料具有巨大的应用潜力，尤其是在处理石油废水和水净化领域。

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.