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制备非对称 Janus 中空二氧化硅微球及其在含油废水中的应用。

Preparation of asymmetric Janus hollow silica microparticle and its application on oily wastewaters.

机构信息

Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, National-Local Joint Engineering Laboratory of Harbor Oil and Gas Storage and Transportation Technology, School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan, 316022, Zhejiang, China.

National Engineering Research Center for Marine Aquaculture, Institute of Innovation and Application, Zhejiang Ocean University, Zhoushan, 316022, Zhejiang, China.

出版信息

Sci Rep. 2023 Mar 13;13(1):4135. doi: 10.1038/s41598-023-30269-9.

DOI:10.1038/s41598-023-30269-9
PMID:36914714
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10011370/
Abstract

Janus nanoparticles have aroused the interest of scholars because of their highly efficient emulsification of spilled oils in wastewater. In this work, interfacially active Janus hollow glass microparticles (J-HGMPs) of asymmetric wettability were designed and synthesized in order to achieve more efficient separation of emulsified oil droplets from oily wastewater. Surface characteristic techniques such as FTIR, SEM, zeta potential and contact angle measurements had been employed to assess the amphiphilic surface properties of J-HGMPs. The oil removal/recovery performance of J-HGMPs in different oil-water systems and their interfacial activities were studied. As a particulate emulsifier, J-HGMPs could remove/recover > 96% oil from oil-water mixed phase. The results showed that J-HGMPs had strong interfacial activities and anchored firmly at oil/water interfaces. This high adsorption energy was also evaluated and verified via the calculation of Gibbs free energy. Overall, this study provided a novel and low-cost oil recovery method via a convenient buoyancy force that could be effectively applied in the treatment of oil spills while achieving the goal of benign and green environmental protection.

摘要

由于 Janus 纳米粒子在废水中高效乳化溢油而引起了学者们的兴趣。在这项工作中，设计并合成了具有不对称润湿性的界面活性 Janus 空心玻璃微球（J-HGMPs），以实现更有效地从含油废水中分离乳化油滴。采用傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、zeta 电位和接触角测量等表面特性技术来评估 J-HGMPs 的两亲表面性质。研究了 J-HGMPs 在不同油水体系中的除油/回收性能及其界面活性。作为一种颗粒乳化剂，J-HGMPs 可以从油水混合相中去除/回收超过 96%的油。结果表明，J-HGMPs 具有很强的界面活性，并牢固地固定在油/水界面上。通过计算吉布斯自由能，对这种高吸附能进行了评估和验证。总的来说，这项研究提供了一种通过简便的浮力进行新型、低成本的采油方法，可有效地应用于溢油处理，同时实现良性和绿色环保的目标。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/48b1346e5cf3/41598_2023_30269_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/dc0a902ab055/41598_2023_30269_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/6c748149c785/41598_2023_30269_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/d45be7f0b899/41598_2023_30269_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/3ea5cb7dd600/41598_2023_30269_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/3e1bf2c8375b/41598_2023_30269_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/f0a5b479e4ee/41598_2023_30269_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/dd85d61a6209/41598_2023_30269_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/48b1346e5cf3/41598_2023_30269_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/dc0a902ab055/41598_2023_30269_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/6c748149c785/41598_2023_30269_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/d45be7f0b899/41598_2023_30269_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/3ea5cb7dd600/41598_2023_30269_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/3e1bf2c8375b/41598_2023_30269_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/f0a5b479e4ee/41598_2023_30269_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/dd85d61a6209/41598_2023_30269_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b290/10011370/48b1346e5cf3/41598_2023_30269_Fig8_HTML.jpg

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