BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
·
2010
·Vol. 86
·期 1
·38-42
·
IF 0.992
Yang Zhong-Zhi,Li Yong-Fang,Li Zhi-Chun,Gu Yu-Mei,Zhu Ya,Zhang Zhan-Jun
Five higher Chlorinated Benzenes (CBs), include Hexachlorobenzene (HCB), pentachlorobenzene (PeCB) and three isomers of tetrachlorobenzens, were analyzed in 20 outdoor dust samples collected from a fast developing city, Xinxiang. Only HCB was detected in all outdoor dust samples. The dominate part of the CBs residue in most samples was HCB and the mean HCB concentration (4.13 ng/g dry weight) in this study was in the range of global background soil HCB levels (ranging from 0.010 to 5.20 ng/g dry weight). The higher ratios of HCB/PeCB in the outdoor dust samples in the present study indicate that pesticide application may be an important source of HCB in China.
研究领域:
环境科学
·
毒理学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2021
·Vol. 28
·期 2
·405-417
·
IF 1.993
Zhiping Xu,Zhenhua An,Yan Ye,Rui Yang
Owing to the widespread use of polypropylene (PP) nanocomposites, their stability in the environment is becoming increasingly relevant. Accordingly, a systematic study of the relationship between the characteristics of inorganic nanofillers and the environmental aging behavior of PP is necessary to determine the service life of PP nanocomposites in outdoor environments. Therefore, in this study, we systematically investigated the effects of the chemical composition, particle size, crystalline form, and amount of inorganic filler (CaCO 3 , Al 2 O 3 , SiO 2 , and ZnO) on the outdoor aging behavior of PP. The results of outdoor aging experiments showed that the filler composition affects the aging behavior of PP. It was found that SiO 2 and ZnO nanoparticles accelerate and retard the outdoor aging of PP, respectively. In addition, PP composites containing inorganic fillers with relatively large particles or more stable crystalline forms exhibit relatively slow aging. In the case of the fillers other than ZnO nanoparticles, increasing the filler content accelerates the outdoor aging of PP. The evolution of cracks in the exposed surfaces of PP composites during outdoor aging was observed by scanning electron microscopy. The CO 2 generated by PP composites during in situ gaseous degradation product detection corresponds well with the results of the outdoor aging experiments. This study elucidates the effects of inorganic fillers on the outdoor aging behavior of PP.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Wenguang Dou,Xiaojun Zeng,Chenyang Zhang,Xue Wang,Ye Zhu,Shuzhuang Zhu,Chan Liu,Weijun Ji,Qingmei Fan,Yonglin Gao,Kongyin Zhao,Jin Zhao,Xin Hou,Xubo Yuan,Hongliang Liu,Yansheng Li,Sidi Li
Prehospital rescue of accidental massive bleeding is crucial for saving lives. However, currently available hemostatic materials are still in infancy in treating accidental bleeding due to the challenges in fully satisfying the complex outdoor hemostatic requirements. Herein, we designed an epidermal growth factor (EGF)- incorporated, microparticle-formed, high-strength, dynamic environment-stable hemostatic gel system for prehospital rescue. Carboxyl and dimethylamide were employed as the hydrogen bond (H-bond) groups and were carefully engineered into the microparticles (DHMs). We demonstrated that the unique H-bond crosslinked micronized structure enabled the DHM-based gelling system to adequately meet the outdoor hemostatic requirements. The stable H-bond groups allow the DHMs to be stored at room temperature and be easily carried around. The small sizes (150–250 μm) of the DHMs enabled the filling of irregular defects, and upon encountering water, these DHMs integrated into hydrogels (DHMs-gels) with high mechanical strength (1.61 MPa), strong tissue adhesiveness (66.5 kPa) and stable performance under dynamic environments. In vivo results showed that the EGF-incorporated DHMs-gels (DHMs-EGF gel) achieved a 100 % survival rate in a simulated rescue process and promoted wound healing. Simultaneously possessing multiple prehospital rescue-required properties, the hemostatic DHMs-EGF may become an effective tool for emergency rescue.
研究领域:
生物医学工程
·
创伤急救
·
组织修复
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Zeyu Miao,Jie Guo,Dan Jiang,Weijia Zheng,Wenxu Yin,Zhao Luo,Xinyan Zhou,Zhou Jiang,Wei Zhang,Xiuyun Zhang,Cong Chen,Xingliang Dai,Qingfeng Dong,Xuyong Yang,Ning Wang,Tom Wu,Xiaoyu Zhang,Jiaqi Zhang
Tin (Sn)-based perovskites have made notable advances with external quantum efficiency of over 20%, but still exhibit low electroluminescence brightness insufficient for outdoor displays. Here, it is demonstrated that compact phenethylammonium tin iodide (PEA 2 SnI 4 ) films with an intact crystal structure can offer high luminance by optimizing the perovskite crystallization rate simultaneously with engineering the grain surface. Ammonium thiocyanate is added to the precursor solution to generate the film with PEA 2 SnI x SCN 4- x and NH 4 I after spin-coating. Sn 2+ and SCN − have a strong interaction that slows crystallization to improve PEA 2 SnI 4 crystal quality. During the subsequent annealing, I − from NH 4 I replaces SCN − in PEA 2 SnI x SCN 4- x by forming thiourea, which can escape from the film to leave intact PEA 2 SnI 4 crystals. It is found that the optimized PEA 2 SnI 4 emitting layers can provide outstanding film coverage, high crystallinity, low trap state density, and superior photophysical performance. Consequently, an impressive brightness of 8285 cd m −2 for pure red electroluminescence is achieved, the first report of Sn-based perovskite light-emitting diodes that meet outdoor display requirements.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Tian-Cai Sun,Bing-Yu Yan,Xu-Chao Ning,Chao Hui,Lei Xu,Yi-Ning Ding,Xing-Long Yang,Seeram Ramakrishna,Yun-Ze Long,Jun Zhang
Burns and scalds are thermal injuries caused by a large amount of heat accumulation in local tissues. The first cooling emergency is a key step. However, it is hard that in outdoors to find clean water to cool the scald tissue sites. Moreover, most dressings are concentrated on the treatment process today, neglecting the emergency treatment of temperature reduction. In this study, we imported refrigeration in the electrospinning process while using dirty water, rainwater and even urine of outdoors, so that the cooled sterile fibers were directly deposited on the burn and scald wounds, and the cooling emergency was achieved through the dual cooling mechanism. Since this fiber which is made up of cheap fish gelatin contains CuS adopting the green method, it can generate heat and effectively kill bacteria under the irradiation of an illumination lamp at the front end of a spinning device. As a result of the direct deposition, there is an excellent fit between the fibrous membrane and the skin, which reduces the air gap to achieve a better and quick cooling and heating effects. On the same Chitosan/Platelet-derived Growth Factor fiber membrane, this method of cooling first and heating second can shorten the recovery time from 30 days to 21 days. Thus, this treatment strategy has a great potential application prospect in the field of outdoor burn treatment.
研究领域:
生物材料学
·
创伤治疗学
·
再生医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY AND BUILDINGS
·
2022
·
IF 7.201
Aimin Sha,Jin Zhang,Meng Jia,Wei Jiang,Wenxiu Jiao
Effective cool pavement technologies with using phase change materials (PCMs) are of great significance to alleviate Urban Heat Island (UHI) effect and improve the functionality, safety and service life of asphalt pavements. This study focuses on the development of polyurethanes (PUs) as solid–solid PCMs (s-s PCMs) that are suitable for asphalt pavement cooling utilizations. First, a range of PUs were synthesized through two-step polymerization reactions. Successful synthesis was confirmed by the Fourier transform infrared (FTIR) spectroscopy test. Next, characterizations were performed on the synthesized PUs. It is demonstrated that a PU with a larger isocyanate content usually sustains a higher temperature without liquid leakage. The applicable s-s PCM among the synthesized PUs is M_PU5 with 4,4′-diphenylmethane diisocyanate (MDI) as the isocyanate and the molar ratio of MDI and polyethylene glycol (PEG) being 5, due to its desirable latent heat storage capacity of 93.5 J·g −1 and phase change temperatures of 36–48.3 °C, excellent thermal stability and reliability, and its strong ability to withstand harsh conditions of asphalt pavements. Finally, the feasibility of M_PU5 for actively cooling asphalt pavements has been verified by outdoor test. The investigated results provide a basis and reference for building cool asphalt pavement systems with using s-s PCMs.
研究领域:
土木工程
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Li Zhang,Jian Xu,Zhiqing Hu,Peizhuang Wang,Jiaqi Shang,Jiang Zhou,Lili Ren
Antireflective coatings with superhydrophobicity have many outdoor applications, such as solar photovoltaic panels and windshields. In this study, we fabricated an omnidirectional antireflective and superhydrophobic coating with good mechanical robustness and environmental durability via the spin coating technique. The coating consisted of a layer of phytic acid (PA)/polyacrylamide (PAM)/calcium ions (Ca2+) (referred to as Binder), an antireflective layer composed of chitin nanofibers (ChNFs), and a hydrophobic layer composed of methylsilanized silica (referred to as Mosil). The transmittance of a glass slide with the Binder/ChNFs/Mosil coating had a 5.2% gain at a wavelength of 550 nm, and the antireflective coating showed a water contact angle as high as 160° and a water sliding angle of 8°. The mechanical robustness and environmental durability of the coating, including resistance to peeling, dynamic impact, chemical erosion, ultraviolet (UV) irradiation, and high temperature, were evaluated. The coating retained excellent antireflective capacity and self-cleaning performance in the harsh conditions. The increase in voltage per unit area of a solar panel with a Binder/ChNFs/Mosil coating reached 0.4 mV/cm2 compared to the solar panel exposed to sunlight with an intensity of 54.3 × 103 lx. This work not only demonstrates that ChNFs can be used as raw materials to fabricate antireflective superhydrophobic coatings for outdoor applications but also provides a feasible and efficient approach to do so.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Yunfan Wang,Xuebin Liu,Junhua Huang,Shaodian Yang,Baohua Li,Weiqiang Huang,Zhiping Zeng,Yougen Hu,Xuchun Gui
The prosperous outdoor exercise activities have raised higher performance and multi-functional requirements for the films used in clothing and equipment. However, developing films that have multi-functions such as comfortable, flexible, high-performance electromagnetic interference (EMI) shielding and exceptional electrothermal heating capabilities remains a significant challenge. Herein, a flexible, highly conductive Cu@CNT film was fabricated using the strategy of copper particles bridging conductive nanotubes and polymer fixing conductive networks. The two-step strategy remarkably enhanced the CNT-based conductive network and improved the electrical conductivity of Cu-2.0@CNT film to 22,051 S/m. The resulting Cu@CNT film demonstrated an outstanding average EMI shielding effectiveness (SE) of 57.8 dB across 5-40 GHz, and a remarkable average EMI SE more than 60 dB in 0.2-1.6 THz at the film thickness of 100 μm. The film also exhibited a normalized EMI SE (SE/t) of 578 dB mm-1, which exceeds most reported film materials. Additionally, the Cu@CNT film exhibited impressive electrothermal heating properties, including a high saturated temperature (over 160 ℃ at 3.5 V), a high heating rate (＞ 10 ℃/s at 3.5 V), a controllable thermal response (＜ 15 s) and a stable and uniform heating distribution. Additionally, as a demonstration, it is used as a flexible electromagnetic wave isolation film and flexible heaters. Therefore, the flexible composite film with multiple protective functions proposed in this work provides a competitive material for the next-generation outdoor clothing and equipment applications.
研究领域:
材料科学
·
纳米技术
·
电磁学
·
高分子科学
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Coatings Technology and Research
·
2024
·
IF 2.3
Shuhua Tu,Qinwen Zheng,Jing Zhang,Jie Feng
Recently, much attention has been paid to the icephobic property of slippery lubricant-infused surfaces, but little attention has been paid to their antisoiling property. In this work, we prepared polydimethylsiloxane (PDMS) coatings by using methyltriacetoxysilane (TM-003) as a crosslinking agent and filling with a certain amount of inert silicone oil. We systematically studied the icephobic and antisoiling performances of these PDMS coatings by placing them outdoors for 1–2 months. Ice-adhesion strength test confirmed that the coating surface filled with inert silicone oil was more icephobic and had a better icephobic effect as the amount of inert silicone oil increased. EDS mapping confirmed that after outdoor exposure for 1–2 months, a small amount of dust deposited on the coating surface, which could be removed mostly by water rinsing and wind. The ice-adhesion strengths of the coating surface increased with the time of outdoor exposure increasing but decreased after several cycles of icing/deicing and finally stabilized at a certain level. XPS characterization confirmed that a small amount of dust was embedded in the coating surface. This work firstly confirmed that if the air was not clear, dust particles in the air would adhere to the coating and the icephobic properties of the coating would deteriorate irreversibly to some extent.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Jiajie Lyu,Binrui Wu,Nan Wu,Chaoyi Peng,Jun Yang,Yunyun Meng,Suli Xing
Transparent superhydrophobic surfaces are employed in a wide range of outdoor applications, such as windshields and house windows. However, micro-nano hierarchical superhydrophobic structures are vulnerable to impacts from sand particles and rain drops. The low impact resistance limits the practical applications of superhydrophobic surfaces. Herein, we develop a novel eco-friendly self-assembly process in aqueous medium to construct transparent superhydrophobic surfaces with high dynamic impact resistance. The transmittance of the prepared surfaces was ~ 94.2% compared with the transmittance of the pure glass substrate. The surface is resistant to the impact of 600 g sand and an ~ 8.6 m/s of water jet applied for 6 min (this is nearly 1500 times higher than the annual precipitation in the tropics), which makes the superhydrophobic surface sustainable in heavy rain. Furthermore, the coating was resistant to highly corrosive media (sulfuric acid) in the case of acid rain and UV illumination. A combination of these properties is attractive for transparent applications with self-cleaning properties, waterproofing and environmental stability.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Advanced Fiber Materials
·
2023
·Vol. 5
·期 4
·1367-1377
·
IF 16.1
Yang Zhangbin,Chen Tingting,Tang Xinpeng,Xu Feiyue,Zhang Jun
Intense heat waves pose a serious threat to public health and well-being, especially in outdoor spaces. Outdoor high-temperature environments without air conditioners are major challenges for humanity. However, an achievable approach that can provide outdoor cooling without consuming any energy is lacking. Hence, this work presents a novel hierarchical fabric emitter (HFET) used for sunshade sheds to provide radiative outdoor cooling for humanity, the HFET is composed of polyethylene/silicon dioxide/silicon nitride film, melt-blown polypropylene film, and polydimethylsiloxane film from top to bottom. In addition to reflecting 94% solar irradiance by its top surface, the HFET shows selective emission (0.82 in the atmospheric window and 0.38 outside the atmospheric window) on its top surface to outer space and broadband absorption (0.80 in the longwave infrared band) on its bottom surface from the inside. This bidirectional asymmetric emission enables the simulated skin to avoid overheating by 2–11 °C relative to the reverse HFET and bare cases under direct sunlight. Due to its excellent cooling capability, the HFET will be one of the most considerable solutions for outdoor cooling in hot summer environments. Graphical Abstract
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
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Feng Lu,Shao-Lin Wu,Lu-Na Quan,Zhi-Hui Zhong,Hao-Cheng Yang,Ming Xue
Solar-powered evaporation emerges as a sustainable way to alleviate water stress by harvesting freshwater from diverse sources. Optimizing heat management by evaporator structures is becoming a mainstream strategy to promote solar-powered evaporation performance. In this work, we develop a novel evaporator design by simply twisting a two-dimensional polypyrrole-decorated sponge with excellent light-to-heat conversion capacity to reduce heat loss and recover environmental energy. The enlarged evaporation surface and reduced bulk water within the evaporator promote heat utilization in evaporation. The twisted structure dilutes the light density on the evaporator surface to reduce surface temperature, decreasing the driving force of heat transfer and promoting the contribution of environmental energy during evaporation. By integrating solar evaporation and environment evaporation, such an evaporator achieves an ultra-high evaporation rate of ∼4.0 kg·m −2 ·h −1 and an apparent evaporation efficiency exceeding 100% for 3.5 wt% saline solution. Smaller twisting angle lead to a higher calculated evaporation rate due to the reduced light density. Moreover, an evaporator array performs a high water production rate of 17.3 kg·m −2 ·day −1 in the outdoor experiment.
研究领域:
可再生能源
·
材料科学
·
环境工程
✓ 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）