Atmosphere
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2022
·Vol. 13
·期 8
·1260
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IF 3.11
Jian Li,Qingyun Sun,Zhongxin Ping,Yihong Gao,Peiyu Chen,Fangzhi Huang
Removal rate and durability are the two most important parameters of an ideal air purification filter to remove inhalable particles and toxic gases. Here, based on the interaction of a local electric field and an external electric field, a novel coaxial core–shell CuO@NH2-MIL-53(Al) nanowire array was synthesized on a rigid copper net, which was used to remove PM2.5and SO2simultaneously. The removal rates of PM2.5by the filter with and without an external electric field can reach 98.72% and 44.41%, respectively, and the adsorption capacity of SO2can reach 4.87 mol/m2. After repeated filtration and cleaning for 10 cycles, the air pollution removal efficiency can be kept almost stable.Keywords:air purification filter;nanowire array;electric field;PM2.5;SO2
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
BIOMATERIALS
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2020
·
IF 10.317
Shang Liu,Zhenzhen Wang,Xinbang Jiang,Jingjing Gan,Xuejiao Tian,Zhen Xing,Yiqing Yan,Jiahui Chen,Junfeng Zhang,Chunming Wang,Lei Dong
Biomolecular corona formed on nanoparticles (NPs) influences the latter's in vivo biological effects. Nanomaterials with different physicochemical properties exert similar adverse effects, such as cytotoxicity, suggesting the existence of ubiquitous signals during various corona formations that mediate common and fundamental cellular events. Here, we discover the involvement of the unfolded protein response (UPR) and recruited chaperones in the corona. Specially, heat shock protein 90 kDa α class B member 1 (Hsp90ab1) is abundantly enriched in the corona, accompanied by substantial aggregation of misfolded protein on particles intracellularly. Further analysis reveals the particulate matter 2.5 (PM2.5) and metal-containing particles are more capable of denaturing proteins. The recruited Hsp90ab1 activates diverse NPs' pathological behaviour by heat stress response (HSR), which were significantly reversed by geldanamycin (GA), the inhibitor of Hsp90ab1. Murine lung inflammation induced by PM2.5 and iron oxide NPs (Fe 3 O 4 NPs) is suppressed by GA, highlighting that Hsp90ab1-mediated UPR is a potential target for the treatment of environmental pollution-related illnesses. Based on our findings, the UPR and Hsp90ab1 presented in the corona of particles initiate fundamental intracellular reactions that lead to common pathological outcomes, which may provide new insights for understanding nanotoxicity and designing therapeutic approaches for diseases associated with environmental pollution.
研究领域:
纳米技术
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毒理学
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环境科学
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细胞生物学
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药理学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Kun Zhang,Qian Huo,Ying-Ying Zhou,Hong-Hong Wang,Gao-Peng Li,Yao-Wu Wang,Yao-Yu Wang
The health-threatening air pollution, especially from particulate matter (PM), has triggered increasing demands for developing low-cost and long-service-life air-cleaning technologies. In the present contribution, a range of high-efficiency textiles/metal–organic framework (MOF) composites (MOFs@textiles) air filters with excellent washable reusability is presented. By processing MOFs onto textile substrates via an eco-friendly solvent-free method to enable the microporous feature and also strong PM adhesion, we develop flexible, highly effective air filters with >95.00% PM removal efficiency (e.g., MiL-53(Al)@Aramid, PM2.5: 95.30%, PM10: 96.11%) under harmful air quality conditions (average PM2.5 mass concentration > 280 μg m–3 and PM10 > 360 μg m–3). Therefore, these MOFs@textiles are promising composites for producing efficient and recyclable out-/indoor air purifiers.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2025
·
IF 6.1
Zifang Peng,Shijiao Hou,Qingyun He,Fangcheng Su,Lishun Ren,Congcong Pei,Dan Yin,Yanhao Zhang,Yanjie Huang,Shusheng Zhang,Zongwei Cai
p- Phenylenediamine (PPD) antioxidants and their quinone derivatives (PPDQs), as hot-spot novel contaminants in recent years, have been detected in air fine particulate matters (PM 2.5 ) in multiple regions. However, current research all discussed the pollution of PPDs and PPDQs based on the collected PM 2.5 samples at least in one day (23.5 h). In this work, an innovative study was conducted to investigate their precise daily pollution characteristics and health risks based on high-resolution collected PM 2.5 samples every 1.5 hours in one week in Zhengzhou, a megacity continuously suffers from serious air contamination in central China. The composition patterns and sources of PPDs and PPDQs were discovered and more serious contamination of them were both found at the day-time (07:00–19:00). Almost all daily time intervals with relatively high pollution levels of PPDs and PPDQs were commuting time for majority of workers, which was possibly because of increased rubber tire abrasion induced by huge traffic volume. The highest daily adults’ inhalation risks were also found in 11:30–13:00 and 16:00–17:30 for PPDs and PPDQs in PM 2.5 , respectively. Current study builds the relationship between pollution status of such novel pollutants and human activities, and possibly guides people in central China to take precautions to protect themselves from environmental toxicants at special daily time.
研究领域:
环境科学
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公共卫生
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Xiao Ma,Chen Zhu,Mingyue Li,Wenyuan Hu,Mei Hong,Fuping Qian
With the rapid advancement of urbanization, individuals spend over 90 % of their time in indoor environments, where prolonged exposure to indoor air pollutants particularly particulate matters (PMs) poses significant health risks. This highlights the urgent need to develop advanced fiber-based filtration systems that simultaneously exhibit high filtration efficiency and antimicrobial properties. In this study, a multifunctional ZIF-8@PET/CA-PP composite filter material was fabricated using commercial PET membranes as substrates via a combination of electrostatic spraying and self-assembly techniques. The resulting material features a surface-functionalized CA/ZIF-8/PVDF-HFP composite layer. Comprehensive characterization revealed that the optimized filter material achieves exceptional PM2.5 filtration efficiency of 98.52 % (±0.72 %) with a low air resistance of only 57 Pa, while demonstrating antibacterial rates of 93.75 % against Escherichia coli ( E. coli ) and 94.2 % against Staphylococcus aureus ( S. aureus ). The outstanding performance can be attributed to two key factors: (1) the uniform dispersion and dense nanostructure of the functional layer significantly enhances particle capture capacity through combined mechanical and electrostatic filtration mechanisms; (2) the incorporated ZIF-8 nanoparticles provide effective antimicrobial activity by disrupting microbial membranes. Further validation through X-ray micro-CT scanning simulations confirmed the filter material's structural integrity and consistent filtration performance across varying airflow velocities. The ZIF-8@PET/CA-PP composite filter material developed in this work represents a promising candidate for next-generation air filtration applications, offering an optimal combination of low air resistance, high filtration efficiency, and robust antimicrobial properties. These advantages position the material as particularly suitable for improving indoor air quality in urban environments.
研究领域:
材料科学
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环境工程
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纳米技术
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空气过滤
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生物医学工程
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产品关联
DOI
高影响因子
ACS Nano
·
2023
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IF 17.1
Yite Li,Liqian Liu,Tian Meng,Lei Wang,Zhigang Xie
Sunlight-driven photocatalytic filters against pathogenic bioaerosols have attracted a lot of interest. However, developing an efficient interception system that shows enhanced visible-light harvesting, controllable charge dynamic, and boosted ROS generation remains a grand challenge. Here, we designed an ionic ZIF-8@iCOF nanocomposite as a sunlight-driven photocatalytic filter through elaborate structural engineering of the heterointerface between ZIF-8 and cationic iCOF layers. The photoactive experiments reveal significant improvements in the visible light absorption and sunlight-driven exciton-enhanced intersystem crossing to boost the generation of singlet oxygen (220%) and also obtain antibacterial efficiency of 99.99999% after 15 min irradiation. After combining with commercial polymer, resultant ZIF-8@iCOF/polyacrylonitrile (PAN) fibrous membranes exhibited high interception efficiency for both PM10 and PM2.5 (98%), being close to the commercial N95. This fibrous membrane also possesses good biocompatibility and strong elimination of bacteria under sunlight conditions, satisfying for the long-lasting contact usage. This finding not only showcases the promise of the porous materials-based fibrous membranes for efficient photocatalytic filter against pathogenic bioaerosols but also highlights the importance of accurate structural engineering for the advancement of sunlight-driven photocatalytic systems in environment and energy-related fields.
研究领域:
材料科学
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环境科学
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纳米技术
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光催化
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Yuzhu Zhang,Laijin Zhong,Jing Zhan,Zhipeng Yin,Yao Pei,Dong Cao,Qian S. Liu,Qunfang Zhou,Qian Liu,Guibin Jiang
Atmospheric fine particulate matter (PM2.5) poses threats to the cardiovascular system. Red blood cells (RBCs) are the most abundant cells in blood, which are actively involved in multiple hematological diseases, such as blood clot formation and thrombosis. Exploring how PM2.5 with spatiotemporal heterogeneity influences the hematological system by targeting RBCs would help gain insights into the deleterious effects of PM2.5 and provide clues for finding the causative components therein. Herein, the PM2.5 samples collected from 3 urban sites in Beijing (i.e., Chaoyang, Shunyi, and Yanqing districts) during 4 seasons of 2022 were studied for their toxicities to mouse RBCs, and the main contributing components were further explored through chemical analysis and correlation measure. The results showed that exposure to PM2.5 samples decreased adenosine triphosphate (ATP) levels and increased phosphatidylserine (PS) externalization of RBCs, causing cell morphological deformity. The Pearson correlation analysis showed that the aromaticity of the dissolved organic matter (DOM) in PM2.5 samples was positively correlated with PS exposure of RBCs, showing that the lignin-like compounds were the potential contributors. The negative correlation of zeta potentials of PM2.5 samples with PS exposure of RBCs showed the particle-derived bioactivities of this airborne pollutant. The simulative test based on artificial nanomaterials of carbon black (CB) and oxidized CB (OCB) confirmed the crucial role of particulate carbon in PM2.5-induced effects on RBCs, and soot with a certain oxidation degree was, thus, recognized as another contributor, given its ubiquitous existence in PM2.5 samples. This study, for the first time, revealed PM2.5-induced PS exposure of RBCs, and the causative components of DOM and soot were unraveled. Considering the inevitable contact of airborne PM2.5 with RBCs in the blood circulatory system, the findings obtained herein would help bridge the gap between PM2.5 exposure and the risk of cardiovascular diseases, like thrombogenesis.
研究领域:
环境科学
·
毒理学
·
血液学
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心血管疾病
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空气污染
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）