LANGMUIR
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2024
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IF 3.7
Zihan Yu,Jun Mao,Qiong Li,Yuanyuan Hu,Zhanlong Tan,Fei Xue,Yonglian Zhang,Hongxiang Zhu,Chunfang Wang,Hui He
To ensure prolonged functionality of transpiration-driven electrokinetic power generators (TEPGs) in saltwater environments, it is imperative to mitigate salt accumulation. This study presents a salt pathway transpiration-driven electrokinetic power generator (SPTEPG), incorporating MXene, graphene oxide (GO), and carbon nanotubes (CNTs) as active materials, along with cellulose nanofibers (CNF) and poly(vinyl alcohol) (PVA) as aqueous binders and nonwoven fabrics. This unique combination confers exceptional hydrophilicity and enhances the energy generation performance. When tested with deionized water, the SPTEPG achieved a maximum voltage of 0.6 V and a current of 4.2 μA. In simulated seawater conditions, the presence of conductive ions in the solution boosted these values to 0.64 V and 42 μA. The incorporation of the salt pathway mechanism facilitates the return of excess salt deposits to the bulk solution, thus extending the SPTEPG’s service life in saltwater environments. This research offers a straightforward yet effective strategy for designing transpiration-driven power generators suitable for saline water applications.
研究领域:
材料科学
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电化学
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可再生能源
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环境科学
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产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
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2024
·Vol. 25
·期 11
·4149-4160
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IF 2.2
Hu Ke,Chen Hongxuan,Lin Yihui,Han Shitong,Wang Qi,Peng Houqian,Wang Ying,Zhao Jiwu,Xi Hailing,Wen Na,Long Jinlin
Abstract Polypropylene (PP) nonwovens have been widely used in disposable protective masks and protective clothing, which are essential to protect healthcare workers from highly infectious diseases such as COVID-19. However, realizing the disinfection reusable function of PP nonwovens to reduce carbon emission or white waste pollution after extensive use has been still a great challenge. Herein, Durable Antimicrobial and Anti-fungal Post-disinfection polypropylene nonwovens were developed by co-grafting of Triclosan and Chitosan. The antibacterial performance test results showed that the as-prepared co-grafted polypropylene nonwoven has a > 99.9% of antimicrobial efficiency against E. coli , S. aureus as well as multi-drug-resistant P. aeruginosa , and the excellent anti-fungal performance against fungus ( C. albicans ) and mold ( A. niger ). Moreover, it retained excellent Antimicrobial and Anti-fungal Properties after disinfection 3 times with boiling water, 40 × diluted 84 disinfectant and 75% alcohol for 5 min. This work provided ideas for developing more effective pathogen protection and longer-lasting personal protective equipment to reduce the environmental impact of medical masks and personal protective equipment in terms of energy consumption, carbon emissions and waste generation. Graphical Abstract Polypropylene (PP) nonwovens have been widely used in disposable protective masks and protective clothing, which are essential to protect healthcare workers from highly infectious diseases such as COVID-19. The as-prepared PP-AA-CS-TCL nonwovens exhibited an antibacterial efficiency of > 99.9% against E. coli , S. aureus , and P. aeruginosa as well as the excellent anti-fungal properties against C. albicans and A. niger. And the antimicrobial and anti-fungal activities were maintained even after disinfection 3 times with boiling water, 40x diluted 84 disinfectant and 75% alcohol for 5 minutes each. This provides a new way of thinking about reusing disposable surgical products with polypropylene nonwoven and reducing environmental pollution.
研究领域:
材料科学
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生物医学工程
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环境科学
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纺织工程
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2024
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IF 5.3
Ning Ding,Neng Hu,Junfeng Zhang,Huawei Xu,Liubang Meng,Xin Cai,Peter Müller-Buschbaum,Dongming Qi,Qi Zhong
Because of the detrimental effects of excessive exposure to solar ultraviolet radiation (UVR) on human skin health, wearable UVR detectors have attracted more and more attention. Inspired by the artwork “Tian-tsui hair pin with flora decoration” from the Palace Museum, a reversible and photochromic peony-shaped hairpin is designed to realize the visualized detection of solar UV radiation. It is prepared via electrospinning a mixed solution containing thermoplastic polyurethanes (TPUs) and Zn-MOF@WO3 onto microfiber nonwoven fabrics (MFNFs). Because of the enhanced UV responsive and photochromic capability from Zn-MOF@WO3 as well the excellent flexibility from TPUs and MFNFs, the obtained hairpin presents an excellent photoresponsive and wearable performance. When exposed to UV radiation from sunshine, the hairpin switches from white to light blue and finally to blue with radiation time. The colors light blue and blue can be used to indicate the UV radiation doses for the synthesis of vitamin D and the induction of erythema, respectively. With the assistance of oxygen in air, the hairpin recovers to its original state after being maintained in a dark atmosphere for 12 h. Even after six cycles of exposure to UV radiation and recovery in the dark, the photochromic performance almost remains unchanged. Only a minor reduction of 5% is observed. As a traditional wearable headdress in China, the peony-shaped hairpin prepared from the hybrid nanofibers not only presents oriental elegance but also is suitable for cyclical use in the daytime to monitor UV radiation for skin health management.
研究领域:
材料科学
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纳米技术
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光子材料
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可穿戴技术
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皮肤健康
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
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2020
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IF 0
Chenxi Zhu,Wei Jiang,Jinglei Hu,Ping Sun,Aimin Li,Quanxing Zhang
Polylactic acid (PLA) is a biodegradable, environmentally friendly polymer that is gradually being used in oil/water separation. To improve its performance, coating and deposition methods have been adopted in recent years. In this paper, a superhydrophobic and superoleophilic PLA nonwoven fabric with stereocomplex (SC) crystals was prepared by a nonsolvent-induced phase separation method using only a small amount of poly(d-lactic acid) (PDLA). Scanning electron microscopy and differential scanning calorimetry characterization confirmed that SC crystals were formed on the PLA nonwoven fabric, resulting in a rough surface. The performance of the prepared fabric remained excellent after multiple uses because PDLA and poly(l-lactic acid) are connected via strong hydrogen bonding in the SC crystals. We also performed detailed theoretical analysis by using the data from atomic force microscopy, water contact angle, and flux measurements, which validated, from a theoretical perspective, that the SC crystal plays an important role in oil/water separation.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
INORGANIC CHEMISTRY COMMUNICATIONS
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2025
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IF 5.4
Qian Lu,Xinyi Wan,Yujie Hou,Yuli Zhang,Zhiliang Guo,Yifan Zhang,Changgan Lai,Lixu Lei
We have proposed a cost-effective method to make a membrane for alkaline water electrolysis by combining organic polymers with inorganic materials, to achieve high ionic conductivity, excellent alkaline stability, and superior electrochemical properties. In this study, NiFe layered double hydroxide (LDH) powders synthesized hydrothermally, mixed with 2 wt% ZrO 2 are physically crosslinked with polyvinyl alcohol (PVA) gel to form a ZrO 2 /NiFe-LDH@PVA slurry. The slurry has been coated onto a non-woven fabric to reduce being oxidated by the anodic active substances during the electrolysis process, also, a layer of nylon gauze is sandwiched to improve its mechanical properties. The resulted membrane exhibited exceptional mechanical strength (24.9 MPa tensile strength) and remarkable hydroxide ion conductivity (86.52 mS cm −1 at 90 °C). Furthermore, NiCo/NM and NiFe/NM catalysts were electrodeposited and integrated with the ZrO 2 /LDH@PVA composite membrane to assemble an alkaline water electrolysis device. When tested in 6 M KOH electrolyte at 70 °C and 2.0 V, the device achieved a current density of 781 mA cm −2 and maintained stable operation for at least 400 h.
研究领域:
材料科学
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电化学
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能源技术
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纳米技术
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高分子科学
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无机化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Jing Wang,Qingfeng Fan,Lidong Kou,Huan Chen,Xing Xing,Wenjie Duan,Kai Jiang
Oxygen vacancies (OVs) and heterostructures of photocatalysts play crucial roles in photocatalysis driven by visible light. In this study, a novel photocatalytic textile was prepared by spraying heterostructures of OVs-rich bismuth oxide (BiO 2-x ) and urea-derived graphitic carbon nitride (UCN) on amine group-modified poly(acrylonitrile) nonwoven textile (APAN), and then studied for sulfamethazine (SMT) removal and bacterial ( S. aureus ) disinfection under irradiation of energy-efficient white light emitting diodes (LEDs). The optimal BiO 2-x , prepared within a much shorter time (i.e. 1 h), was actually a ternary mixture of NaBiO 3 -Bi 2 O 3 -BiO 2-x with rich OVs rather than pure BiO 2-x . Incorporation of UCN could help redistribute electrons and induce formation of more OVs, thereby improve the photocatalytic activity of the BU-0.2 hybrid (i.e. mass ratio of BiO 2-x /UCN = 1:0.2). The BU-0.2 could use full-spectrum white light (i.e. 380–760 nm) to achieve superior SMT removal in a wide pH range (pH 5.0–9.0) and in the co-presence of common water constituents. The enhanced photocatalytic performance of BU-0.2 was attributed to the formation of OVs and heterostructure, which could broaden light absorption, help charges separation, and favor adsorption and activation of molecular O 2 . Detection of reactive species demonstrated that 1 O 2 and holes were the dominant factors responsible for SMT removal. Spraying deposition of BU-0.2 on APAN could endow the resultant textile (i.e. APAN-BU-0.2) with excellent photocatalytic activity for SMT removal and bacterial disinfection under LED white light irradiation. The as-prepared photocatalysts showed promising application prospects in purification of emerging pollutants utilizing LED white light.
研究领域:
环境科学
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材料科学
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光催化
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水处理
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纺织工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）