铜基底特殊润湿性网膜的油水分离性能

doi:10.7523/j.issn.2095-6134.2020.02.005

中国科学院大学学报 ›› 2020, Vol. 37 ›› Issue (2): 177-185.DOI: 10.7523/j.issn.2095-6134.2020.02.005

铜基底特殊润湿性网膜的油水分离性能

袁甲^1,2, 崔晨乙¹, 赵龙³, 齐宝金^1,2, 魏进家^1,4

1. 西安交通大学化学工程与技术学院, 西安 710049;
2. 西安交通大学苏州研究院, 江苏苏州 215123;
3. 黑龙江东方学院, 哈尔滨 150086;
4. 西安交通大学动力工程多相流国家重点实验室, 西安 710049

收稿日期:2019-04-12 修回日期:2019-08-23 发布日期:2020-03-15
通讯作者: 齐宝金
基金资助:
国家自然科学基金（51776168）和江苏省自然科学基金（BK20171236）资助

Study on oil-water separation performance of copper-based special wettability meshes

YUAN Jia^1,2, CUI Chenyi¹, ZHAO Long³, QI Baojin^1,2, WEI Jinjia^1,4

1. School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China;
2. Suzhou Institute, Xi'an Jiaotong University, Suzhou 215123, China;
3. Heilongjiang Oriental University, Harbin 150086, China;
4. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received:2019-04-12 Revised:2019-08-23 Published:2020-03-15

摘要/Abstract

摘要： 为研究特殊润湿性网膜材料的油水分离特性，通过原位置换和氧化修饰方法，以铜网为基底分别制备Ag和Cu（OH）₂微纳米结构的超亲水/水下超疏油网膜。实验对比分析两种网膜油水分离效率、膜通量和稳定性等指标，着重研究微观结构、表面润湿性、入侵压力及介质酸碱性等因素对网膜分离性能的影响。结果表明：两种网膜对柴油、汽油等单油相和多组分混合油相的油水混合物的分离效率均达到99%以上。由于两种网膜的微观结构不同，Ag微纳米结构网膜分离效率略优于Cu（OH）₂结构网膜，但Cu（OH）₂微纳米结构网膜能够承受的入侵压力更大，且其膜通量更优。两种网膜都具有较优异的耐强碱和非氧化性酸性能。此外，两种网膜在清洗后能重复使用10次以上而效率没有明显降低，并且长期放置后两种网膜分离效率没有明显的降低。总之，这两种网膜无论是在分离效率、介质适应性，还是在重复性、耐久性等方面都具有各自明显优势，应用前景广阔。

关键词: 超亲水, 超疏油, 选择浸润性, 多组分, 分离效率

Abstract: In order to study the oil-water separation ability of meshes with special wettability, two copper-based superhydrophilic/underwater-superoleophobic meshes with micro-nano structures of Ag and Cu(OH)₂ were prepared by in situ displacement and oxidative modification methods. The effects of microstructure, surface wettability, permeation pressure, and the pH value on the separation performance of meshes were experimentally studied. The results show that the efficiencies of the two meshes for separating oil-water mixtures with single oil (e.g., diesel or gasoline) and multi-oil (e.g., the mixture of diesel and gasoline) both reached more than 99%. Owning to the difference in microstructures, the separation efficiency of the mesh with Ag micro-nano structure was slightly higher than that of the Cu(OH)₂ mesh. However, the mesh with Cu(OH)₂ micro-nano structure withstood a higher permeation pressure and had a greater liquid flux. Moreover, both the meshes were excellent in acid and alkali resistance. They can be reused for more than 10 times after washing without significant efficiency reducing, and there was no obvious degeneration arising after long-term placement. In short, these two types of meshes showed distinct advantages in separation efficiency, medium adaptability, repeatability, and durability for oil-water separation, and they would have broad application prospects.

Key words: superhydrophilic, superoleophobic, selective wettability, multi-component, separation efficiency

中图分类号:

TQ028.4

袁甲, 崔晨乙, 赵龙, 齐宝金, 魏进家. 铜基底特殊润湿性网膜的油水分离性能[J]. 中国科学院大学学报, 2020, 37(2): 177-185.

YUAN Jia, CUI Chenyi, ZHAO Long, QI Baojin, WEI Jinjia. Study on oil-water separation performance of copper-based special wettability meshes[J]. , 2020, 37(2): 177-185.

参考文献

[1] 张玉秀, 柴团耀. 废水生物处理过程中污泥的微生物种群结构和PAHs降解菌研究进展[J]. 中国科学院大学学报,2016, 33(1):1-8.
[2] 高安虎, 王明玉, 王慧芳. 南水北调中线总干渠焦作段两侧地下水六价铬污染风险研究[J].中国科学院研究生院学报,2013,30(6):763-769.
[3] Song S K, Shon Z H, Kim Y K, et al. An oil spill accident and its impact on ozone levels in the surrounding coastal regions[J]. Atmospheric Environment, 2011, 45(6):1312-1322.
[4] 解宏端, 刑文东, 杨雨桐, 等. 含油废水处理技术现状及发展趋势[J]. 科技资讯, 2015, 13(18):137-139.
[5] 董哲勤, 王宝娟, 许振良, 等. 油水分离功能膜制备技术研究进展[J]. 化工进展, 2017(1):8-16.
[6] Feng L, Zhang Z, Mai Z, et al. A super-hydrophobic and super-oleophilic coating mesh film for the separation of oil and water[J]. Angewandte Chemie(German Edition), 2004, 43(15):2012-2014.
[7] Ma Q, Cheng H, Fane A G, et al. Recent development of advanced materials with special wettability for selective oil/water separation[J]. Small, 2016, 12(16):2186-2202.
[8] Xue Z, Cao Y, Liu N, et al. Special wettable materials for oil/water separation[J]. Journal of Materials Chemistry A, 2014, 2(8):2445-2460.
[9] Yang H C, Xie Y S, Chan H, et al. Crude-oil-repellent membranes by atomic layer deposition:oxide interface engineering[J]. ACS Nano, 2018, 12:8678-8685.
[10] Choi, Hyeok, Zhang K, et al. Effect of permeate flux and tangential flow on membrane fouling for wastewater treatment[J]. Separation & Purification Technology, 2015, 45(1):68-78.
[11] Ni W, Miao X, Yang X, et al. An alternative fabrication of under oil superhydrophobic or underwater superoleophobic stainless steel meshes for oil-water separation:originating from one-step vapor deposition of polydimethylsiloxane[J]. Separation & Purification Technology, 2018, 204:116-126.
[12] Zheng J, Zhang H, Zhao Z, et al. Construction of hierarchical structures by electro spinning or electro spraying[J]. Polymer, 2012, 53(2):546-554.
[13] 薛众鑫, 江雷. 仿生水下超疏油表面[J]. 高分子学报, 2012(10):1091-1101.
[14] Jung Y C, Bhushan B. Wetting behavior of water and oil droplets in three-phase interfaces for hydrophobicity/philicity and oleophobicity/philicity[J]. Langmuir the Acs Journal of Surfaces & Colloids, 2009, 25(24):14165.
[15] Ahmad A L, Majid M A, Ooi B S. Functionalized PSF/SiO₂ nanocomposite membrane for oil-in-water emulsion separation[J]. Desalination, 2011, 268(1-3):266-269.
[16] 陈晨, 袁绍军, 宋瑞雪. 水下超疏油自清洁TiO₂/CuO纳米结构双层改性铜网膜的制备[J]. 广东化工, 2017,44(14):7-21.
[17] Shi H, He Y, Pan Y, et al. A modified mussel-inspired method to fabricate TiO₂ decorated superhydrophilic PVDF membrane for oil/water separation[J]. Journal of Membrane Science, 2016, 506:60-70.
[18] Yang H C, Pi J K, Liao K J, et al. Silica-decorated polypropylene microfiltration membranes with a mussel-inspired intermediate layer for oil-in-water emulsion separation[J]. ACS Applied Materials & Interfaces, 2014, 6(15):12566-12572.
[19] Wenzel, Robert N. Resistance of solid surfaces to wetting by water[J]. Transactions of the Faraday Society, 1936, 28(8):988-994.
[20] Cassie A B D. Contact angles[J]. Discussions of the Faraday Society, 1948, 3(5):11-16.
[21] Liu B, Lange F F. Pressure induced transition between superhydrophobic states:configuration diagrams and effect of surface feature size[J]. Journal of Colloid & Interface Science, 2006, 298(2):899-909.

铜基底特殊润湿性网膜的油水分离性能

Study on oil-water separation performance of copper-based special wettability meshes

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

编辑推荐

Metrics

本文评价

访问统计

联系我们

[1]	封心建江雷. 一维无机半导体纳米材料的制备及其表面可逆浸润性研究（英文）[J]. 中国科学院大学学报, 2007, 24(4): 537-542.
[2]	杨莉丽, 袁倬斌, 孙汉文. 氨基酸分离分析方法与衰老和疾病关系的研究[J]. 中国科学院大学学报, 2001, 18(1): 85-89.