JOURNAL OF HAZARDOUS MATERIALS
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2025
·
IF 11.3
Yansheng Liu,Yunjie Zhan,Guofu Wang,Xiaobo Jia,Jin Zhou,Hongqi Li,Haixin Chang,Zhicheng Jin,Kang Li,Zhaoxu Li
This study proposes a strategy for the highly sensitive detection of polystyrene nanoplastics (PS NPs) with varying particle sizes. Ag nanoarrays (AgNAs) with different inter-column spacings and heights are fabricated via thermal deposition of Ag in anodized aluminum oxide (AAO) templates. The size-matching effects between PS NPs and the parameters of the AgNAs (inter-column spacing and height) are investigated. Utilizing this size-matching effect, the AgNAs substrate enables sensitive detection of PS NPs with particle sizes of 130 nm, 180 nm, and 230 nm, with limits of detection (LODs) of 10 μg/mL. In real water samples (river water, rainwater, and tap water), the AgNAs substrate also demonstrates good performance, achieving a LOD of 10 μg/mL for detecting 130 nm PS NPs. Additionally, toluene is used to remove PS NPs from the AgNAs surface, allowing the substrate to be reused across multiple cycles. After at least 30 detection cycles, the surface-enhanced Raman scattering (SERS) performance of the AgNAs shows no significant decline, with a relative standard deviation (RSD) of 6.8 %. The AgNAs exhibit excellent stability and reusability in detecting PS NPs, indicating strong potential for practical applications.
研究领域:
环境科学
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纳米技术
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分析化学
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产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Mengxiang Liu,Jin Shi,Tao Zhang,Miao Li,Yu Zhang,Runze Zhang,Yewei Zhang,Bin Yang,Jiale Fan,Kaibo Yu
Anisotropic conductive films (ACFs) are promising materials for flexible electronics and wearable devices due to their excellent electrical conductivity and mechanical flexibility. However, simultaneously achieving high conductivity, superior mechanical properties, and long-term stability remains a critical challenge. In this study, polystyrene (PS) microspheres were surface-functionalized with acrylic acid to introduce carboxyl groups, enhancing surface reactivity for subsequent electroless silver plating. When the mass ratio of AgNO₃ to PS was 2:1, the prepared Ag/PS core–shell conductive particles exhibited a dense and continuous silver layer with an average thickness of ∼45 nm and an electrical resistivity of 2.03 × 10⁻³ Ω·cm, confirming their excellent conductivity. The epoxy resin-based ACFs prepared using these particles remained electrically insulating in both the X- and Y-directions while exhibiting a Z-axis resistivity of 6.67 × 10¹ Ω·cm after hot pressing. Furthermore, at a hot-pressing pressure of 2 MPa, the resistance was reduced to 1.2 Ω, while the shear strength reached a maximum of 1.8 MPa. The conductive mechanism of ACFs was systematically investigated by analyzing the morphological evolution of conductive particles under varying hot-pressing pressures. Additionally, the ACFs maintained stable electrical performance after 33 days of storage at 0 °C, meeting industrial transportation and storage requirements. This study provides valuable insights into the structural design and performance optimization of conductive fillers, contributing to the development of high-performance ACFs for microelectronic and flexible device applications.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Muyao Li,Xiangming Zhu,Linghui Yin,Shasha Feng,Zhaoxiang Zhong,Weihong Xing
The simultaneous removal of particulate matter (PM) and toxic gases (SO 2 , NO x , VOC S , etc.) remains a critical challenge in air pollution control. To address this, we developed a multifunctional zeolitic imidazolate framework-8 (ZIF-8)/polystyrene (PS) nanofiber membrane (ZIF-8/PS NFM), forming a hierarchical porous (micro-/ meso -/macroporous) structure for efficient PM capture and SO 2 adsorption. As a representative metal-organic framework, ZIF-8 offers exceptional gas adsorption capability due to its high specific surface area and uniform micropores. The incorporation of ZIF-8 nanoparticles into PS nanofibers enhanced the BET surface area (51 to 175 m 2 ·g −1 ), porosity (0.148 to 0.190 m 2 ·g −1 ), and tensile strength (0.24 to 1.45 MPa). In PM filtration tests, the optimized ZIF-8/PS NFM achieved outstanding removal efficiencies of 99.73 % (PM 0.3 ) and 99.96 % (PM 2.5 ), while maintaining low pressure drop (83 Pa and 27 Pa, respectively). Moreover, the membrane demonstrated a remarkable SO 2 adsorption capacity of 1370 mg·g −1 at 55 % relative humidity, attributed to its high surface area and abundant unsaturated Z n 2+ sites. This work provides a promising strategy for the synergistic capture of PM and SO 2 with high efficiency and stability.
研究领域:
环境科学
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材料科学
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纳米技术
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大气污染控制
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功能材料
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产品关联
DOI
高影响因子
POLYMER
·
2020
·
IF 4.231
Tiantian Guo,Yi Wang,Yaping Qiao,Xiaoyan Yuan,Yunhui Zhao,Lixia Ren
One-dimensional photonic crystals (1D PCs) prepared by solvent annealing self-assembly of bottlebrush block copolymers have attracted much attention due to their low cost and convenient preparation. However, such 1D PCs are usually unstable as the reflectance will red shift at high temperature. Herein, we study the thermal stability of 1D PCs by post-thermal self-assembly. In general, the 1D PCs with lamellar structures are prepared by solvent annealing self-assembly of bottlebrush block copolymers with hard main chain, polystyrene- block -poly( tert -butyl acrylate) (H(PS- b -P t BA)). At temperatures higher than the glass transition temperature of side chains and main chain, the 1D PCs start to post self-assembly, which reaches equilibrium state when treated at high temperature for 8 h. Correspondingly, the reflectance of the 1D PCs red shifts from purple to blue gradually with temperature increase. Scanning electron microscope characterization shows that after thermal treatment, the domain spacing of the lamellar phases is increased from 108 nm to 160 nm, which results in the red shift of the reflectance wavelength. The red shift of the 1D PCs is related to the metastable self-assembly of bottlebrush block copolymers, which will further self-assemble at high temperatures to increase the domain spacing. After reaching equilibrium, the 1D PCs are thermal stable, which shows potential in high temperature resistance.
研究领域:
材料科学
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聚合物化学
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光子学
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纳米技术
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热性能
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DOI
高影响因子
Polymers
·
2026
·Vol. 18
·期 9
·1075
·
IF 5.8
Hao Yin,Shiyao Wang,Jingbin Liu,Xiao Wu,Yue Hou,Wenwen Zhang,Dan Peng
Superhydrophobic fiber films, as a typical superhydrophobic material, have advantages such as self-cleaning, non-wettability, and pollution resistance. They can be widely used in oil-water separation, antibacterial, anti-pollution, anti-icing, and self-cleaning fields. Traditional electrospun superhydrophobic fiber films face difficulties in fabricating fibers with large contact angles due to the non-Newtonian fluid flow and Taylor cone jet trajectory limitations. To address this challenge, this study develops a novel ultrasonic-magnetic field coupling electrospinning strategy for fabricating poly(methyl methacrylate)-polystyrene (PMMA-PS) fibrous films with enhanced superhydrophobicity. Physical, chemical, and contact angle measurements were used to analyze the morphology, composition, and hydrophobic properties of the fabricated films. The results showed that by controlling the blend ratio of PMMA and PS and optimizing the electrospinning process with ultrasonic vibration and magnetic field coupling, PMMA-PS fibers with better fiber refinement, closer spindle-shaped arrangements, and significantly increased roughness were successfully fabricated. When using 15% PMMA and 15% PS solutions, the static contact angle of the resulting fiber films reached 173.1°, demonstrating the best superhydrophobicity. The study suggests that optimizing the surface morphology of the nanofibers is an effective method to improve hydrophobicity and provides a new approach for fabricating superhydrophobic fiber films.
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DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2021
·Vol. 28
·期 2
·1-10
·
IF 3.097
Liu Wei,Ji Xiangling
The spatial arrangement of functional inorganic nanoparticles within polymer micelles is essential to the nanocomposite performances. Polystyrene (PS) of different lengths (PS 24 , PS 91 and PS 163 ) are grafted onto the surface of fluorescent CdSe/CdS core/shell quantum dots (QDs) through ligand exchange procedure, and their grafting density decreases from 2.80 to 0.54, 0.18 chains/nm 2 with increase of PS ligand length. Under two competing effects, i.e. wettability between QDs and block copolymer PS 120 - b -PEO 318 and the attraction between QDs, the precise location of PS-capped QDs inside the co-assemblies can be regulated by the length of PS ligands. The low grafting density of PS 163 on the QD surface cannot overcome the van der Waals and hydrophobic attraction between QDs and cause the local aggregation of QDs within the co-assemblies. On the contrary, short PS 24 ligands with high grafting density can avoid QD aggregation, but exhibit poor wettability with copolymer, which confines the QDs in the central portion of the core of co-assemblies. PS 91 ligands with medium grafting density have good wettability with block copolymer and facilitate the homogeneous distribution of QDs inside the cores of co-assemblies. Furthermore, the influence of stirring time and water addition rate on the structure of co-assemblies is also investigated.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
IONICS
·
2021
·Vol. 27
·期 5
·2037-2043
·
IF 2.817
Kang Shusen,Yang Zelin,Yang Chengxiang,Zhao Shan,Wu Ningning,Liu Fuliang,Chen Xiaotao,Shi Bin
A novel polymer film is developed by trapping tribasic gel polymer electrolyte (GPE), which blended the polyethylene glycol (PEO), polystyrene (PS), and poly(methyl methacrylate) (PMMA). The properties of the PEO-PS-PMMA polymer film and PEO-PS-PMMA GPE were investigated. The ionic conductivity of the PEO-PS-PMMA GPE is 0.12 mS/cm at 25 °C. Li + transference number of PEO-PS-PMMA GPE is 0.2. Besides, PEO-PS-PMMA GPE shows high electrochemical stability and excellent interface stability to Li metal electrode. Li/PEO-PS-PMMA/LiFePO 4 cell achieved an initial specific discharge capacity of 97 mAh/g and good cycle performance at the current density of 0.1 C. This GPE is promising to be applied to rechargeable Li batteries with high safety and long cycle life.
研究领域:
材料科学
·
能源存储技术
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产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Liuying He,Xiao Wang,Junyu Chen,Yuze Li,Liping Wang,Caiqiao Xiong,Zongxiu Nie
Liver cancer (LC) is the third frequent cause of death worldwide, so early diagnosis of liver cancer patients is crucial for disease management. Herein, we applied NH2-coated polystyrene@Fe3O4 magnetic beads (PS@Fe3O4–NH2 MBs) as a matrix material in laser desorption/ionization mass spectrometry (LDI-MS). Rapid, sensitive, and selective metabolic profiling of the native biofluids was achieved without any inconvenient enrichment or purification. Then, based on the selected m/z features, LC patients were discriminated from healthy controls (HCs) by machine learning, with the high area under the curve (AUC) values for urine and serum assessments (0.962 and 0.935). Moreover, initial-diagnosed and subsequent-visited LC patients were also differentiated, which indicates potential applications of this method in early diagnosis. Furthermore, among these identified compounds by FT-ICR MS, the expression level of some metabolites changed from HCs to LCs, including 29 and 12 characteristic metabolites in human urine and serum samples, respectively. These results suggest that PS@Fe3O4–NH2 MBs-assisted LDI-MS coupled with machine learning is feasible for LC clinical diagnosis.
研究领域:
医学
·
分析化学
·
肿瘤学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Minjie Bi,Xiaohang Wei,Qirui Lou,Duolong Di,Dong Pei,Baoqian Liu
Due to the low adsorption capacity and poor adsorption selectivity of the resins, the separation of flavonoids was still a challenge in the separation field. In this work, a novel polymer microspheres Polystyrene-divinylbenzene-poly(Glycidyl methacylate- p -phenylenediamine(PS-DVB-PGMA-PPD) containing PGMA polymer brushes was synthesized by combining surface-initiated atom-transfer radical polymerization (SI-ATRP) and p-phenylenediamine (PPD) modification.The physical and chemical properties of materials were characterized by different analytical methods. It was found that the adsorption process conformed to the pseudo–second–order kinetic model and Freundlich isotherm model. The thermodynamic parameters of quercetin adsorption process indicated that the adsorption was spontaneous and endothermic. The adsorption experiments showed that the polymer PS-DVB-PGMA-PPD had the best adsorption capacity onto quercetin , and the maximum adsorption capacity was 72.68 mg/g at 318.15 K. Compared with other flavonoids and alkaloids (such as theophylline , berberine and rutin), PS-DVB-PGMA-PPD had higher adsorption capacity and better selectivity for quercetin. Hydrogen bond interaction and π - π interaction may drive the adsorption process of quercetin. In addition, When the ethanol content was 95%, the desorption rate can reach 80.9%. PS-DVB-PGMA-PPD still had good adsorption performances for quercetin after five cycles, which indicated that the material had good renewable performances. In general, the results showed that its adsorption capacity for flavonoids from complex biological systems was excellent.
研究领域:
材料科学
·
生物化学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Weiwei Ma,Jiehong He,Lanfang Han,Chuanxin Ma,Yanpeng Cai,Xiaoyu Guo,Zhifeng Yang
Dissolved organic matter (DOM) exists widely in natural water, which inevitably influences microplastic (MP) photoaging. Nevertheless, the impacts of DOM fractions with diverse molecular structures on MP photoaging remain to be elucidated. This study explored the photoaging mechanisms of polylactic acid (PLA)-MPs and polystyrene (PS)-MPs in the presence of DOM and its subfractions (hydrophobic acid (HPOA), hydrophobic neutral (HPON), and hydrophilic (HPI)). Across DOM fractions, HPI exhibited the highest electron accepting capacity (23 μmol e– (mg C)−1) due to its abundant tannin-like species (36.8%) with carboxylic groups, which facilitated more reactive oxygen species generation (particularly hydroxyl radical), leading to the strongest photoaging rate of two MPs by HPI. However, the sequences of bond cleavage during photoaging of each MPs were not clearly shifted as revealed by two-dimensional infrared correlation spectra. Inconspicuous effects on the extent of PS- and PLA-MPs photoaging were observed for HPOA and HPON, respectively. This was mainly ascribed to the occurrence of inhibitory mechanisms (e.g., light-shielding and quenching effect) counteracting the reactive oxygen species-promoting effects. The findings identified the HPI fraction of DOM for promoting PS- and PLA-MPs photoaging rate and first constructed a link among DOM molecular structures, redox properties, and effects on MP photoaging.
研究领域:
环境科学
·
化学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
POLYMER
·
2020
·
IF 4.231
Zhanhui Gan,Deyu Kong,Qianqian Yu,Yifan Jia,Xue-Hui Dong,Linge Wang
Research on superhydrophobic surfaces received continued attention due to more and more widely applications of superhydrophobic materials. Two parameters have been recognized for the rational design of the superhydrophobic materials: surface texture and chemical constitution. In this work, we fabricated composite membranes of polystyrene- block -poly (ethylene- co -butylene)- block -polystyrene (SEBS) and fluorinated polyhedral oligomeric silsesquioxane- block -polystyrene (FPOSS-PS) using a sequential electrospinning and electrospraying approach. Composite membranes with hierarchical geometries could be achieved by adjusting the formulation and/or fabrication protocols. Incorporation of fluorinated component enhances the surface property of the composite membranes due to its ultra-low surface energy, while micron particles attached on the surface further promotes the robustness of the membrane and enhanced the cell/tissue anti-adhesion efficiency. With a simple annealing treatment, the physical crosslinking was built up between the micron particles and underlying fibers, rendering the membranes with good stability and anti-adhesion properties. These superhydrophobic membranes are anticipated to have potential applications in wound-dressing and other related areas.
研究领域:
材料科学
·
纳米技术
·
高分子科学
·
表面工程
·
生物医学工程
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DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2025
·
IF 3.8
Haiyan Yu,Tao Zhang,Cunyu Wei,Juan Yang,Xinle Ma,Jingchao Chen,Hailan Cui,Feng Liu,Xiangju Li
BACKGROUND Mesosulfuron-methyl (MSM) is currently the only available selective herbicide for controlling Aegilops tauschii in wheat fields. Improving the control performance of MSM against Ae. tauschii is crucial for ensuring wheat yield. Herein, strategies to improve the bioactivity of MSM against Ae. tauschii and the underlying mechanism were investigated. RESULTS The efficacy of MSM oil dispersion (MSM-OD, GR 50 = 21.62 g a.i. ha −1 ) on Ae. tauschii was higher than emulsion in water (GR 50 = 59.96 g a.i. ha −1 ) and emulsifiable concentrate (GR 50 = 77.34 g a.i. ha −1 ). A greater retention on Ae. tauschii leaves was responsible for the increased MSM-OD bioactivity. As the particle size decreased from 13.58 to 1.20 μm, the herbicidal activity of MSM-OD towards Ae. tauschii increased 3.07-fold, which was attributed to the small particle size-enabled faster plant absorption of MSM. Polyvinyl alcohol (PVA, 3%) addition in MSM-OD with a small particle size (MSM-OD-S + PVA) increased MSM residue on Ae. tauschii leaves after washing, and thus herbicidal activity. The increased wettability on Ae. tauschii leaves was related to the PVA-induced rainfastness increase of MSM-OD-S. Importantly, MSM-OD-S + PVA at the recommended field rate did not show an adverse effect on wheat growth. CONCLUSION A suitable formulation, reduced particle size and PVA addition can increase the herbicidal activity of MSM against Ae. tauschii , particularly under rainy conditions. These results can provide guidance for the development and application of other herbicides. © 2025 Society of Chemical Industry.
研究领域:
农业化学
·
杂草科学
·
农药制剂
·
植物生理学
·
作物保护
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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）