CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Xiu Dai,Xu Li,Xinlong Wang
In this work, the nanoparticles of zeolitic imidazolate framework-8 (ZIF-8) are incorporated into poly (lactic acid) (PLA) to prepare porous electrospun membranes. The morphology, mechanical property as well as the PM capture process and capacity of the membranes are studied using scanning electron microscopy (SEM), BET test, X-ray diffraction (XRD), tensile test, Fourier infrared spectra (FT-IR), UV–visible spectra, thermogravimetric analyses (TGA) and photoelectron spectroscope (XPS), systematically. The results demonstrate that the diameter and nanoscale porous structure of fibres can be successfully controlled by changing the content ZIF-8. The PLA/ZIF-8 membranes show better mechanical property compared with pure PLA membrane. The PM capture measurement demonstrates that the PLA/ZIF-8 porous membranes exhibit significantly enhanced PM2.5 removal efficiency compared to that of the pure PLA membrane. The prepared porous membranes also show low pressure drops and good recycling performance.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2018
·Vol. 5
·期 3
·036416
·
IF 1.151
Yating Wang,Xiu Dai,Xu Li,Xinlong Wang
In this article, metal organic frameworks (MOFs) material is introduced in the poly (lactic acid) (PLA) by electrospinning to fabricate the nanocomposite membrane. The acrylic acid (AA) is grafted onto the membrane under UV light. The prepared membrane is studied by scanning electron microscopy (SEM), x-ray diffraction (XRD), thermogravimetry (TG), contact angle test and tensile strength test. The SEM image and XRD indicate that nano MOFs particles adhere to the membrane. Contact angle test shows that grafting AA on the composite fiber membrane improves its hydrophilicity effectively. TG analyses show that the particulate matter (PM) capture capacity of PLA membrane with 2 wt% ZIF-8 content is 22%, which rises to 37% after grafting.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Qiuyue Hu,Xin Gao,Heng Zhang,Tian Si,Xiaoning Tang,Lincai Peng
Cellulose has attracted much attention in application of air filtration for the excellent ability of degradability and biocompatibility. However, limited by the strength of natural structure, air filters based on native cellulose usually have high pressure drop (ΔP) or thick volume. In this study, an efficient air filter was produced with low ΔP (6.8 Pa) using a low amount of dry material (9 ∼ 12 mg/cm 3 ) through simple preparation process with high-speed shear induced. Analysis showed the chains of regenerated cellulose (RC) were stretched and arranged orderly due to the shear induced during the entire coagulation process, letting to an increasing of crystalline of RC. Furthermore, RC filter exhibited a high PM2.5 capture efficiency (over 99.65 %) with high-quality factor (0.853 Pa −1 ) under high PM concentration conditions. This work gave a novel sight on the potential of air filtration produced by agricultural waste bioresources furthermore, offered an interesting and simple avenue for daily respiratory protective media.
研究领域:
材料科学
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环境科学
·
生物工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Zhimin Hao,Juntao Wu,Chaolu Wang,Jingang Liu
Particulate matter (PM) pollution is a serious threat to human health. Zeolitic imidazolate framework-8 (ZIF-8) is a kind of metal-organic framework, and ZIF-8 not only can capture PM2.5 efficiently but also possesses excellent chemical and thermal stability. In this study, ZIF-8-modified soluble polyimide (PI) nanofibrous membranes were prepared via an electrospinning process. As a result, the PI-ZIF membrane shows high PM2.5 filtration efficiency (up to 96.6 ± 2.9%), superior thermal stability (up to 300 °C), good transmittance, excellent mechanical properties, and low pressure drop. The prepared PI-ZIF membrane with excellent comprehensive property shows a promising application in PM2.5 capture, especially in harsh conditions.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 34
·20155-20161
·
IF 3.119
Jinshan Cao,Zhiqiang Cheng,Lijuan Kang,Meng Lin,Lihao Han
PM2.5, due to its small particle size, strong activity, ease of the attachment of toxic substances and long residence time in the atmosphere, has a great impact on human health and daily production. In this work, we have presented patterned nanofiber air filters with high optical transparency, robust mechanical strength and effective PM2.5 capture capability. Here, to fabricate a transparency air filter by a facile electrospinning method, we chose three kinds of patterned wire meshes with micro-structures as negative receiver substrates and directly electrospun polymer fibers onto the supporting meshes. Compared with randomly oriented nanofibers (named “RO NFs” in this paper) and commercially available facemasks, the patterned air filters showed great mechanical properties, and the water contact angles on their surfaces were about 122–143° (the water contact angle for RO NFs was 81°). In addition, the patterned nanofibers exhibited high porosity (>80%), and their mean pore size was about 0.5838–0.8686 μm (the mean pore size of RO NFs was 0.4374 μm). The results indicate that the transparent patterned air filters have the best PM2.5 filtration efficiency of 99.99% at a high transmittance of ∼69% under simulated haze pollution.
研究领域:
材料科学
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环境科学
·
公共卫生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yankang Deng,Miaomiao Zhu,Tao Lu,Qingwei Fan,Wenjing Ma,Xiaoli Zhang,Long Chen,Huihua Min,Ranhua Xiong,Chaobo Huang
Air pollution has seriously affected human health and the atmospheric environment. Preparation of fiber membrane with hierarchical structure provides an advanced method for high-performance air filtration. However, indistinctive secondary structure and complicated preparation present constantly in the formation of fiber with hierarchical structure, inevitably limited in the application of air filtration. In this work, a typical granular-convex structure was created in the surface of thermal-crosslinked sodium phytate/polyvinyl alcohol (T-PANa/PVA) fiber via green preparation. Unique secondary structure endowed fiber with efficient physical interception and polar adsorption, which exhibited excellent the removal of air pollutants (removal of PM 2.5 high than 99.9% while low air resistance of 36.5 Pa). In addition, due to the exist of crosslinked network, T-PANa/PVA fiber membrane expresses water-resistant and mechanical properties . This work provides a positive strategy to fabricate hierarchical fiber membranes via green preparation for high-performance air filtration, which is expected to substitute traditional air filtration materials and adapt to the sustainable development of future.
研究领域:
环境科学
·
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）