Functionalization of biodegradable PLA nonwoven fabrics as super-wetting membranes for simultaneous efficient dye and oil/water separation

2019 ◽  
Vol 43 (24) ◽  
pp. 9696-9705
Author(s):  
Yashi Chen ◽  
Qing Li ◽  
Xinhong Chen ◽  
Xi Xu

Although the construction process of dual functional materials for dye and oil/water separation has been developed rapidly, the postprocess of the used separation materials themselves is still a problem owing to their non-degradation in the natural environment.

2018 ◽  
Vol 6 (17) ◽  
pp. 7457-7479 ◽  
Author(s):  
Prakash M. Gore ◽  
Balasubramanian Kandasubramanian

The recent requirement for superwettable materials for efficient absorption of heavy oils and waste organic solvents, and the concern for the global warming has led to the advancement of environment friendly functional materials.


2019 ◽  
Vol 7 (7) ◽  
pp. 2981-2992 ◽  
Author(s):  
Tobias Keplinger ◽  
Xiaoqing Wang ◽  
Ingo Burgert

We compare functional NFC composites and wood derived scaffolds regarding mechanical performance, electric and magnetic properties as well as oil/water separation and heavy metal remediation.


2021 ◽  
Vol 272 ◽  
pp. 02031
Author(s):  
Sen Li ◽  
Yunzhe Ji ◽  
Xiaojing Li ◽  
Xiaojie Wang

The increasing amount of oily wastewater discharges caused major challenges for current environmental issues, such as oil-water purification and separation [1-6]. Thus, the development of new functional materials for the efficient treatment of oil-water is imperative [7-11]. This paper reviewed the recently developed oil-water separation technologies, which were based on novel functional nanomaterials, and presented representative works in detail. Finally, the challenges and future research directions of this area were briefly discussed.


Cellulose ◽  
2019 ◽  
Vol 26 (12) ◽  
pp. 7507-7522 ◽  
Author(s):  
Jing Yang ◽  
Yi Pu ◽  
Hongwei He ◽  
Renguang Cao ◽  
Dagang Miao ◽  
...  

NANO ◽  
2017 ◽  
Vol 12 (04) ◽  
pp. 1730001 ◽  
Author(s):  
Gailan Guo ◽  
Libin Liu ◽  
Zhao Dang ◽  
Wenyuan Fang

With the development of society, oil pollution has become more and more serious, it is becoming a global issue to separate oil and water mixture. Currently, a variety of functional materials have been successfully prepared for oil/water separation. Among them, polyurethane is an attractive candidate due to its low cost, wear-resistance and excellent mechanical properties. This report summarizes the design strategy of polyurethane-based materials and their applications in oil/water separation. The progress made so far will guide further development of polyurethane-based materials for oil/water separation.


2018 ◽  
Vol 10 (4) ◽  
pp. 4213-4221 ◽  
Author(s):  
Xiaojing Su ◽  
Hongqiang Li ◽  
Xuejun Lai ◽  
Lin Zhang ◽  
Xiaofeng Liao ◽  
...  

2019 ◽  
Vol 89 (23-24) ◽  
pp. 5096-5107
Author(s):  
Yajie Ding ◽  
Chong Zhang ◽  
Guoqiang Cai ◽  
Ke Xu ◽  
Jindan Wu ◽  
...  

Water scarcity and pollution has become one of the most serious problems in the world. Generally, both oils and microorganisms exist in polluted water, hence multi-functional materials for the removal of diverse substances from water are desired. We reported a facile method for preparing cotton fabric possessing hybrid poly(sodium methacrylate) (pNaMAA)/silver nanoparticles (AgNPs) for oil/water separation and water disinfection. A crosslinked pNaMAA layer was generated on the cotton surface by ultraviolet-initiated polymerization. By replacing Na+in pNaMAA molecules, Ag+was incorporated into the fabric and then was reduced to AgNPs in situ by photo-thermal reduction. Due to the high underwater oleophobicity and bactericidal effect of the pNaMAA/AgNP hybrid layer, the gravity-driven oil/water separation efficiency of the prepared fabric was higher than 99% and the bacteria killing ratio achieved nearly 100%. Furthermore, AgNPs exhibited relatively good fastness during application. Combining their excellent oil removal and water disinfection effectiveness, these textile-based materials provide a promising future in the field of point-of-use water purification.


2021 ◽  
Vol 9 ◽  
Author(s):  
Shahbaz Ahmad ◽  
M. Egilmez ◽  
M. Iqbal ◽  
T. Ibrahim ◽  
M. Khamis ◽  
...  

Ultrafast laser structuring has proven to alter the wettability performance of surfaces drastically due to controlled modification of the surface roughness and energy. Surface alteration can be achieved also by coating the surfaces with functional materials with enhanced durability. On this line, robust and tunable surface wettability performance can be achieved by the synergic effects of ultrafast laser structuring and coating. In this work, femtosecond laser-structured stainless steel (SS-100) meshes were used to host the growth of NaAlSi2O6–H2O zeolite films. Contact angle measurements were carried on pristine SS-100 meshes, zeolite-coated SS-100 meshes, laser-structured SS-100 meshes, and zeolite-coated laser-structured SS-100 meshes. Enhanced hydrophilic behavior was observed in the zeolite-coated SS-100 meshes (contact angle 72°) and in laser-structured SS-100 meshes (contact angle 41°). On the other hand, superior durable hydrophilic behavior was observed for the zeolite-coated laser-structured SS-100 meshes (contact angle 14°) over an extended period and reusability. In addition, the zeolite-coated laser-structured SS-100 meshes were subjected to oil–water separation tests and revealed augmented effectuation for oil–water separation.


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