School of Chemical Engineering and Advanced Institute of Materials Science Changchun University of Technology Changchun 130012, China.
School of Chemical Engineering and Advanced Institute of Materials Science Changchun University of Technology Changchun 130012, China.
Chemosphere. 2024 Jun;357:142100. doi: 10.1016/j.chemosphere.2024.142100. Epub 2024 Apr 22.
Emulsified oils and dye contaminants already pose a huge threat to global ecosystems and human health. It is a significant research topic to develop efficient, rapid, versatile methods for emulsion separation and dye adsorption. The membrane material modified with common methods only modified the outer surface of the membrane, while the interior is hardly fully decorated. In this investigation, a solvent exchange method was used to in situ grow nanoparticles in the interior of a porous sponge. These nanoparticles were obtained with polyethyleneimine, gallic acid, and tannic acid via Michael addition and Schiff base reaction. The prepared nanoparticle-coated sponges provided efficient separation of dyes, emulsions, and complex contaminants. The separation efficiency of the dye reached 99.49%, and the separation efficiency of the emulsion was as high as 99.87% with a flux of 11140.3 L m h. Furthermore, the maximum adsorption capacity reached 486.8 mg g for cationic dyes and 182.1 mg g for anionic dyes. More importantly, the nanoparticles were highly robust on the surface of the porous sponge, and the modified sponge could have long-term applications in hazardous environments. Overall, it is envisioned that the nanoparticles-modified porous sponge exhibited considerable potential for emulsion and dye wastewater treatment.
乳化油和染料污染物已经对全球生态系统和人类健康构成了巨大威胁。开发高效、快速、多功能的乳液分离和染料吸附方法是一个重要的研究课题。用常见方法改性的膜材料仅修饰了膜的外表面，而内部几乎没有完全修饰。在这项研究中，采用溶剂交换法在多孔海绵的内部原位生长纳米粒子。这些纳米粒子是通过迈克尔加成和希夫碱反应，由聚乙烯亚胺、没食子酸和单宁酸制备得到的。所制备的纳米粒子涂覆的海绵提供了对染料、乳液和复杂污染物的有效分离。染料的分离效率达到 99.49%，乳液的分离效率高达 99.87%，通量为 11140.3 L m h。此外，对阳离子染料的最大吸附容量达到 486.8 mg g，对阴离子染料的最大吸附容量达到 182.1 mg g。更重要的是，纳米粒子在多孔海绵表面高度稳定，改性后的海绵在危险环境中可以长期使用。总的来说，预计纳米粒子改性的多孔海绵在乳液和染料废水处理方面具有很大的潜力。
