Ecological Frontiers
·
2025
·
IF 0
Xinyi Wu,Yan Li,Linghan Li,Hongwei Liu,Yongguang Yin,Shixiang Gao,Maoyong Song,Zhiqiang Tan,Yan Ma
Monitoring nanoplastic (NP) aggregation in bidisperse systems under environmentally relevant ionic conditions remains a significant challenge. Conventional techniques such as dynamic light scattering and transmission electron microscopy are hindered by matrix interference, low sensitivity, and difficulties in resolving polydispersity. Here, we addressed this gap by using a coupled system including hollow fiber flow field-flow fractionation (HF5), ultraviolet-visible detector (UV), and point-discharge optical emission spectroscopy (PD-OES) to investigate aggregation behavior of bidisperse polystyrene NPs (PSNPs, 50 nm and 100 nm) at ionic conditions below 1 mM, representative of freshwater ecosystems. We demonstrated that bidisperse PSNPs exhibit enhanced aggregation compared to monodisperse counterparts by using the HF5-UV/PD-OES platform for purification, separation, and carbon-specific quantification. This platform elucidated the critical roles of cation valence (Na + vs. Ca 2+ ) and low concentration ion gradients (0.01–1 mM) in modulating aggregation over extended scales (i.e., 24 h). Finally, toxicity assessments on Microcystis aeruginosa revealed that aggregation reduces PSNP ecotoxicity depending on cation valence, thereby alleviating growth inhibition, oxidative stress, and impairment of chlorophyll biosynthesis. These findings elucidate how environmentally relevant ionic conditions govern NP fate and effects in freshwater ecosystems, providing a critical link between physicochemical transformations and biological responses for ecological risk evaluation.
✓ 已验证
产品关联
DOI
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xinyong Su,Jinwei Wang,Caiyuan Zheng,Xueguo Li
Fast UV-cured Polybutadiene films were prepared in 10 s by using mercaptan pentaerythritol tetra(3-mercaptopropionate) (PETMP) as the cross-linker and PETMP-treated nano-SiO 2 as the filler, achieving significant improvements in overall performance, which may be applied as insulating materials for flexible printed circuits. The dispersion of SiO 2 in the polymer matrix was improved after treatment by PETMP and served as a “hard core” in enhancing their hardness greatly and improving the tensile strength about 50% from 7.5 to 15.2 MPa; they still retain excellent flexibility, maintaining shapes without cracking and peeling while folding in half under squeezing. The thermal expansion coefficient decreased from 2.22 × 10 −4 /°C to 2.02 × 10 −4 /°C and the glass transition temperature rose from 47.50°C to 58.62°C; meanwhile, they exhibited higher decomposing temperatures and higher residues, indicating the stabilizing effect of nano fillers. The incorporation of SiO 2 decreased their dielectric constant from 3.12 to 2.94 while maintaining stable dielectric loss of less than 0.02. Moreover, the addition of pretreated SiO 2 also improved their resistance to pure and salt water. Nevertheless, the excessive addition of SiO 2 led to local aggregations and thus adversely affected their overall properties if its addition was above 8% as seen from SEM pictures.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Tonghe Xing,Annan He,Zhiming Du,Yu Zhang,Yuxin Luo,Zhiyu Huang,Mengqi Wang,Zhicheng Shi,Aixin Tong,Sijie Qiao,Xiaohong Liao,Jie Bai,Heng Pan,Zihui Liang,Wei Ke,Hao Yu,Fengxiang Chen
Silk fiber, as a luxurious textile raw material, is widely used in the textile industry due to its excellent mechanical properties and wearing comfort. However, the poor (ultraviolet, UV) light stability of silk affects its further application in high-end textiles, fashionable apparel, and smart materials. Although surface modification can endow the excellent UV resistance of silk fibers, it often reduces its comfort property. Herein, a laminated ultrathin Al2O3/TiO2 coating with a total thickness of 120 nm is fabricated on the surface of silk fiber via a modified atomic layer deposition (ALD) technique. The tenacity of ALD-coated silk can maintain 61.1% of its original value after exposure to intense UV light (640 mW/cm2) under high temperature (>200 °C) for 6 h, which is far superior to other work that has been reported. This can be attributed to the synergistic effect of the reflection of UV light by the multilayer film barrier, the strong oxidizing free radicals by the Al2O3 layer in the innermost layer, and thermal shield of laminated ultrathin Al2O3/TiO2 film. ALD-coated silk fabrics can also demonstrate a multicycle laundering durability, thermal and chemical stabilities, and flame retardancy. More importantly, the wearing comfort of the modified silk has no obvious change. This method provides principle and technical guidance in high-performance and multifunctional fibers and devices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jiawei Zhang,Kaili Zhang,Chen Tian,Gaoyue Zhang,Xiao Jiang,Kui Wang,Kang Sun,Jianchun Jiang
Kraft lignin (KL), a major by-product of the pulp and paper industry, has garnered significant research attention due to its abundant availability and distinctive chemical structure, making it a promising candidate for applications such as biofuels, carbon materials, and polymer composites. Despite these advantages, its utilization in fine chemical industries, including nanomaterials, is constrained by its inherent dark color and broad molecular weight distribution. Addressing these limitations has become a central focus in ongoing research efforts aimed at enhancing the functionality and commercial viability of KL. In this study, we fractionated KL from a paper-making enterprise using pH fractionation, and obtained four kinds of lignin with different molecular weights. Following that, lignin microspheres (LMPs) were formed by self-assembly from four sizes of KL. Analyzing the KL and LMP properties, the low molecular weight lignin, such as KL-2, exhibited good antioxidant properties (84.27 %, 5 mg/mL), high brightness (ISO% = 7.6), high L ⁎ value (L ⁎ = 86.2) and low polydispersity index (PDI = 1.19). The LMP showed a narrow size distribution (1.0–1.4 μm). When the LMP content is 5 %, the 5 % LMP/PVA film maintains high transparency and exhibits excellent UV protection, achieving a UV shielding rate of up to 94.6 %. Therefore, this study offered an effective way for the comprehensive utilization of pulping waste KL.
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Xu Dong,Longxue Gao,Tianyuan Xiao,Jian Zhang,Qingwei Ping
Environmentally sustainable, non-toxic, and harmless multifunctional cotton fabrics, which are endowed with antioxidant and UV-resistant properties, exhibit considerable potential for applications in food protection and packaging. Consequently, there is an imperative need for the advancement of novel coating systems that can endow cotton fabrics with supplementary functional properties. Bamboo ethanol lignin (EL) was synthesized using a clean ethanol pulping process, and a multifunctional coating of EL was fabricated through a one-pot dipping method. In brief, EL interacts with cotton fibers via hydrogen bonding and physical adhesion, and the optimized sample, designated as Cotton@EL 1 , demonstrates outstanding antioxidant and UV-blocking properties. Compared to EL 0 , EL 1 exhibited a substantially higher antioxidant efficiency of 80.3 % and effectively blocked both UVA (99.99 %) and UVB (100 %) radiation. Furthermore, Cotton@EL 1 exhibited a UPF value of 48.2, with UV transmittance below 3 %, showcasing exceptional UV protection performance. In conclusion, this study presents a novel approach for the utilization of high-value wood materials in the development of environmentally sustainable, non-toxic, and multifunctional food protection and packaging fabrics.
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Qingmiao Mu,Jia Li,Hongxi Gu,Lijun Ren,Juan Du,Hualei Cheng,Dengwei Hu
Photoswitchable fluorescent materials (PFMs) have attracted considerable attention due to the intrinsic advantages of non-contact operation, cleanliness, and non-invasiveness. Conventional PFMs always require complicated preparation processes with poor fluorescence switching properties, which are affected by the mechanisms of Föster resonance energy transfer (FRET) or photoinduced electron transfer (PET). The WO3-x QDs/Cu NCs composite films are prepared on different substrates by a solution casting method and displays outstanding fluorescence switching properties owing to the super photochromic performance of WO3-x QDs and aggregation-induced fluorescence of Cu NCs. The composite film exhibits reversible on/off switchable fluorescence under UV light irradiation and heat treatment based on the inner filter effect (IFE) mechanism. The composite film shows dynamic variations of the dual-mode signals, and the applications of UV sensing and anti-counterfeiting are analyzed. Sensitive dual-mode detection is realized in UV sensing, especially for UVB. The composite film has a dual-modal imaging capability with good reproducibility and high resolution for security information encryption and anti-counterfeiting. This work provides a novel strategy for fabricating advanced PFMs for multiple optical applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 30
·14528-14542
·
IF 4.682
Luo Xiaolei,Ma Yanan,Chen Hao,Liu Lin,Hu Ziqiang,Li Ziyan,Yao Juming
Green, multifunctional protective fabrics have evoked enormous research enthusiasm because of the progress in public safety. Herein, inspired by the self-protection ability of natural creature, multifunctional protective cotton fabric (TP-Cotton) was prepared through layer-by-layer self-assembly of tannic acid (TA) and phytic acid (PA) from biomass. Due to the synergistic effect of TA as an antioxidant and PA as a fire retardant, the modified cotton fabric displays excellent fireproofing, antimicrobial activity, and UV-resistance. The limiting oxygen index of TP-Cotton reaches 39.4%, and the peak value of heat release rate (pHRR) reduces by 80.04% compared with Cotton. Moreover, the antibacterial rates of TP-Cotton against S. aureus and E. coli reaches 99.98 and 100.00%, respectively. Meanwhile, the ultraviolet protection factor value is over 40 due to the integration of TA, which is rich in phenolic hydroxyl groups. Therefore, benefiting from this unique composition and the simple preparation strategy, the as-prepared cotton fabrics showed highly multiple protection capabilities, having promising applications as protective clothing, military uniform, and overalls for emergency services.
✓ 已验证
DOI
高影响因子
Frontiers in Marine Science
·
2021
·
IF 4.912
Han Xiaoxin,Vogt Rolf D.,Zhou Jiaying,Zheng Boyang,Yu Xue,Feng Jianfeng,Lu Xueqiang
Environmental effects of microplastic are rather due to their adsorption capacity of contaminants than themselves. Aging is a key factor influencing adsorption properties of environmental microplastics. In order to clarify this influence, polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET) microplastics with particle sizes of <0.9 mm, 0.9–2 mm, and 2–5 mm were artificially aged in seawater for 12 months. This enabled an assessment of the change in Cu(II) adsorption capacity to the microplastics particles under aging. According to the FTIR spectra, fresh microplastics were oxidized during the UV induced aging process. The adsorption capacities of microplastic were positively correlated with their aging time. After 12-months aging, the amount of Cu(II) adsorbed to the aged microplastics was 1.45–2.92 times higher than on the fresh microplastic particles. For PP and PET, the aging effect increased with decreasing size of the microplastic particles. In the case of PE, particles with the medium particle size (0.9–2 mm) had the strongest aging effect.
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Ruofan Mao,Mengfan Lang,Xiaoqin Yu,Renren Wu,Xiaomei Yang,Xuetao Guo
Microplastics are formed by the degradation of plastic wastes under the action of physicochemical mechanisms in environment, and they are becoming a new type of pollutant that is attractings global attention. However, research on the aging characteristics and mechanism of microplastics is limited. The aging mechanism of Polystyrene (PS) with UV irradiation under different conditions (air, pure water and seawater) and the effect of aging on heavy metal adsorption were studied. The results show that PS have different characteristics with UV irradiation under different conditions, and the aging of PS is the most obvious in air. Based on the 2D-COS analysis, different aging mechanisms were identified under different aging conditions, aging sequence of aged PS functional groups in air and water were clearly definited. An isothermal adsorption model shows that aging can significantly increase the adsorption of heavy metals by PS. The adsorption of heavy metals is also affected by different aging methods. Over all, a 2D-COS analysis was an effective method for understanding the aging process of PS. These results further clarify the aging mechanism of PS, and provides a theoretical basis for the assessment of environmental behavior and ecological risk when microplastics and heavy metals coexist.
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2020
·Vol. 31
·期 16
·165502
·
IF 3.551
Muhammad Imran Saleem,Shengyi Yang,Muhammad Sulaman,Jinming Hu,Perumal Veeramalai Chandrasekar,Yuansheng Shi,Ruonan Zhi,Attia Batool,Bingsuo Zou
Colloidal quantum dots (CQDs) are very promising nanomaterials for optoelectronics due to their tunable bandgap and quantum confinement effect. All-inorganic CsPbX3 (X = Br, Cl and I) perovskite nanocrystals (NCs) have attracted enormous interests owing to their promising and exciting applications in photovoltaic devices. In this paper, all-solution-processed UV-IR broadband trilayer photodetectors ITO/ZnO/PbS/CsPbBr3/Au and ITO/ZnO/CsPbBr3/PbS/Au with high performance were presented. The role of CsPbBr3 QDs layer as the carriers-extracting layer in the trilayer devices was discussed. As compared with bilayer device ITO/ZnO/PbS/Au, both the dark currents and photocurrents under illumination from trilayer photodetectors are enhanced, but the trilayer photodetector ITO/ZnO(80 nm)/PbS(150 nm)/CsPbBr3(50 nm)/Au showed a maximum specific detectivity (D*) of 8.3 × 1012 Jones with a responsivity (R) of 35 A W−1 under 1.6 mW cm−2 980 nm illumination. However, another trilayer photodetector ITO/ZnO(80 nm)/CsPbBr3(50 nm)/PbS(150 nm)/Au showed a maximum D* of 1.73 × 1012 Jones with a R of 5.31 A W−1 under 6.8 mW cm−2 405 nm illumination. Further, the underlying mechanism for the enhanced performance of trilayer photodetectors was discussed. Thus, this strategy of all-solution-processed heterojunction configuration paves a facile way for broadband photodetectors with high performance.
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Qing Xia,Jingyi Wu,Qing Xuan Shi,Xiao Xiang,Xiongwei Li,Huijie Pei,Hongxia Zeng,Xiaolin Xie,Yun Sheng Ye
Crosslinked polymer electrolyte (CPE) and composite polymer electrolyte are two of the most promising polymer electrolyte (PE) systems for improving the resistance to Li dendrite growth, but the trade-off and agglomerated effects of these PEs hinder the development of safe Li metal battery (LMB). Herein, a new class of crosslinked composite polymer electrolyte (CCPE) with the combination of confined ionic liquid (IL) polymer network and homogeneously dispersed boron nitride nanosheet (BNNS) for LMB is reported. This UV-curable CCPE is formed on electrode via in-situ crosslinking of a precursor solution in a rapid and solvent-free step, and the assembly process of LMBs and interfacial contact/adhesion are maximum optimized. The critical point of this CCPE is that a facile channel for Li + transfer and a robust skeleton for confining IL and strengthening interface are simultaneously achieved via the introduction of network structure and 2D BNNS in PE. Consequently, the LiFePO 4 ǀLi batteries involving CCPE show a great improvement in the charge-discharge cycling stability and rate performance compared with those of the cells with pure CPE. This study offers an effective and facile strategy for fabricating dendrite-resistant CCPE with potential applicability in next-generation energy storage systems .
✓ 已验证
DOI
高影响因子
POLYMER TESTING
·
2024
·
IF 5
li Liu,Fenglei Huang,Yaojie Xu,Xuke Lan,Guangyan Huang
Aramid fabrics are widely used in bulletproof armor because of their excellent mechanical properties. Previous studies have shown that ultraviolet radiation has a negative effect on the mechanical properties of aramid yarn, so improving the mechanical properties and impact resistance of aramid fabrics under ultraviolet radiation has become a research focus. In this work, aramid fabric was modified with CuO and ZnO particles to improve its ballistic performance under ultraviolet radiation. The ballistic impact resistance response and microscopic failure mechanisms of aramid fabrics under ultraviolet radiation were analyzed in detail. Under ultraviolet radiation, the ballistic limit velocity ( v bl ) of the CuO/ZnO-modified aramid fabric was 185.1 % greater than that of a neat fabric with a similar areal density. The v bl of the single-layer modified fabric was 45.6 % greater than that of the two-layer neat fabrics. The decrease in the ballistic performance of the aramid fabric under ultraviolet radiation was attributed to surface damage caused by the fracture of the chemical structure of the fibers, which weakened the mechanical properties of the fabric. The numerical simulation results were highly consistent with the ballistic impact test results, and the error between the numerical simulation and experimental results was within 10 %. The effects of changes in the mechanical parameters of the fabrics on the protection mechanism and energy absorption structure during ballistic impact were investigated. The energy dissipation of the modified fabric was at least 147.7 % greater than that of the neat fabric, further explaining the significant improvement in the ballistic performance of CuO/ZnO-modified fabrics under ultraviolet radiation.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）