RSC Advances
·
2018
·Vol. 8
·期 7
·3910-3918
·
IF 2.936
Xiaotian Zhang,Yangyi Sun,Yijing Mao,Kunlin Chen,Zhihai Cao,Dongming Qi
This paper presents a simple and controllable method for the synthesis of monodisperse nanometer-sized organic–inorganic raspberry-like polystyrene (PS)–SiO2 nanocomposite particles (NCPs) via Pickering emulsion polymerization, by simply using a silane coupling agent, 3-(trimethoxysilyl)propyl methacrylate (MPS), as an auxiliary monomer and controlling its hydrolysis/condensation processes and amount. In this method, when MPS was stirred in acidic water with styrene (St) for a period of time, and then a basic silica solution added, raspberry-like PS–SiO2 NCPs were directly obtained after the polymerization. The whole process needs neither surface treatment for the silica particles nor additional surfactants or stabilizers. We propose that a silica-stabilized Pickering emulsion is formed through Si–OH reaction between the hydrolysis/condensation products of MPS distributed on the St droplets surface and the silica particles.
研究领域:
材料科学
·
高分子化学
·
纳米技术
·
胶体与界面科学
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DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Chong Shen,Bin Peng,Qin Meng
Sulfobetaine methacrylate (SBMA) is a well-known zwitterionic molecule that can improve the hydrophilic property of hydrophobic membranes such as polysulfone (PSU). However, SBMA is too hydrophilic to dissolve in organic solvents. Hence, it is difficult to modify the polymer membranes via blending with their casting solution. This paper aims to synthesize an amphiphilic block polymers of polystyrene-block-sulfobetaine methacrylate (PS-b-SBMA) which can be well dissolved in organic solvents for membrane casting. The two PS-b-SBMA copolymers with SBMA content >28% were applied as the additives to cast the PSU ultrafiltration membrane. The PS-b-SBMA copolymer modified membranes showed lower contact angles and 3-folds higher water flux recovery after BSA treatment than the parent PSU membrane. Moreover, SEM images showed that the BSA contaminant on the modified membrane surfaces was much less than that on PSU membrane. Thus, such modified membranes can be applied to prevent protein fouling in the process of ultrafiltration.
研究领域:
高分子材料
·
膜科学与技术
·
生物医学工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Li Zhu,Sun Ningxin,Li Shiwei,Yang Jiaao,Guo Yi,Dong Lijie
Biofouling on marine aquaculture nets poses significant challenges to the economic viability and environmental sustainability of mariculture. This study developed a novel composite coating PS- b -PDMS/CaO 2 on the net surface by incorporating oxygen-releasing calcium peroxide nanoparticles (CaO 2 NPs) into a polystyrene-polydimethylsiloxane block copolymer (PS- b -PDMS). This coating synergistically combines low surface energy with a sustained oxygen-enriched microenvironment and enhanced reactive oxygen species (ROS) generation, resulting in significantly enhanced antifouling performance. Experiments demonstrated that the coating achieved outstanding antifouling efficacy, with antibacterial rates exceeding 99% against Escherichia coli, Staphylococcus aureus, and the marine bacterium Pseudomonas aeruginosa, anti-diatom adhesion rates of 92.18%, and anti-protein adhesion rates of 96.82%, with an optimal loading of 0.6 wt%. Moreover, the coating improved the mechanical properties (~ 35.53 MPa) while preserving the low-surface-energy characteristics and sustained oxygen release for over 60 h. A 90-day marine field test verified minimal biological fouling on the PS- b -PDMS/CaO 2 -0.6 coating surface, showing excellent real-sea antifouling performance and structural stability, indicating the long-term serviceability of aquaculture nets in marine environments. This study proposes a novel technical pathway for the development of environmentally friendly, long-term stable, and high-performance antifouling and antibacterial coatings that can effectively adapt to complex marine environments. Graphical abstract
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DOI
高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
Jiayi Luo,Yunqiang Yi,Zhanqiang Fang
In order to fully exploit the potential of magnetic biochar-based persulfate (PS) systems, Mn was utilized to modify the magnetic biochar-based catalysts through impregnation-pyrolysis method. Taking metronidazole (MNZ), a typical antifungal drug, as the target contaminant, the reactivity of the synthesized magnetic biochar (MMBC) catalyst was evaluated. The degradation efficiency of MNZ in MMBC/persulfate system was 95.6%, which was 13.0 times higher than that in MBC/PS system. The characterization experiments confirmed the degradation of metronidazole by surface binding free radicals, the ·OH and 1O2 played the key role in remove of MNZ in the system of MMBC/PS. Physicochemical characterization, Fe(II) semi-quantitative analysis and masking experiments confirmed that the doping of MBC with Mn increased its Fe(II) content (43.0 mg/g), approximately 7.8 times higher than that of pristine MBC. The increase of Fe(II) content in MBC is the key reason to improve the optimization of MBC modified with Mn. Simultaneously, both Fe(II) and Mn(II) were the key components of PS activation by magnetic biochar. This paper presents a method to optimize the high efficiency of PS activation by magnetic biochar.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2025
·
IF 2
Ye Jia,Lingxue Kong,Tengdi Zhang,Yuping Wang,Anmin Liu,Liguo Gao,Tingli Ma
Convenient and portable, sustained provision of safe drinking water is crucial for wilderness survival. In this study, a portable water collection bag utilising solar-driven interface evaporation technology has been developed. The water collection bag includes a plastic film, CB-PS microsphere evaporator, and a small vial. By placing on the water surface, the CB-PS microspheres float and absorb sunlight to quickly evaporate the surrounding water. The plastic film and vial make it easy and fast to collect clean and safe drinking water. The device boasts an impressive evaporation rate of 1.64 kg·m⁻²·h⁻¹ under 1 sun illumination. Moreover, the portable water collection bag can withstand harsh acidic and alkaline conditions, efficiently removing organic contaminants from wilderness water sources to meet drinking water standards. Importantly, it is designed for repeated use without any water evaporation rate decreasing. The portable water collection bag also exhibits strong resistance to salt, making it suitable for applications in desalinating seawater into freshwater.
研究领域:
材料科学
·
环境科学
·
水资源管理
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Huansheng Wu,Chengyi Chu,Tao Chen,Mingli Yu,Jianjun Guo,Zhixiang Li,Gaojie Xu,Yuchuan Cheng,Aihua Sun
Photonic display cell that produce structural colors over a wide visible spectrum have been self-assembled from core–shell PS@PANI nanoparticles using a natural sedimentation method. A series of core–shell PS@PANI nanoparticles were prepared by deposition of PANI shells on the surfaces of the PS cores through an in situ polymerization of aniline monomers. The thickness of PANI shells can be well controlled by changing the weight ratio of aniline and PS nanoparticles . The response structure color characteristics of photonic display cell were investigated under different electric field. The position of these reflection peaks varied with the change of the external electric field in wide visible spectrum. The structurally colored materials exhibited colors resulting from the combined effects of the ordered colloidal crystal arrays and the electrochromism of PANI shell.
研究领域:
材料科学
·
纳米技术
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Jinping Tang,Fuqiang Qian,Yuhai Wang,Chunxu Wang,Yuan Chai,Dewen Kong,Jin Wang
By integrating the photonic nanojet effect of polystyrene microsphere (PS), the charge transfer capability of MXene nanosheets, and the electromagnetic field enhancement induced by Ag nanoparticles, the PS@MXene@Ag composite substrate exhibited outstanding SERS sensitivity. • The SERS performance of the PS@MXene@Ag substrate was evaluated using 2-mercaptopyridine as a probe molecule, achieving a detection limit as low as 1.24 × 10 −12 M, with the SERS performance factor (SPF) up to 5.0 × 10(Gueguen et al., 2000 [7] ) . In addition, the SERS substrate demonstrated satisfactory results in signal uniformity, batch-to-batch reproducibility, and long-term stability. • PS@MXene@Ag composite successfully detected thiram and methyl blue on practical sample surfaces (orange and fish), achieving satisfactory recovery rates. Surface-enhanced Raman scattering (SERS) spectroscopy has emerged as a powerful analytical technique for the sensitive detection of hazardous molecules, owing to its ultranarrow spectral linewidths and highly specific molecular fingerprinting capability. Herein, we designed a reliable SERS substrate consisting of polystyrene microspheres (PS), Ti 3 C 2 T x MXene nanosheets, and Ag nanoparticles (NPs) for the sensitive detection of various organic pollutants. By integrating the photonic nanojet effect of PS, the charge transfer capability of MXene nanosheets, and the electromagnetic field enhancement induced by Ag NPs, the PS@MXene@Ag composite substrate exhibited outstanding SERS sensitivity, along with excellent reproducibility and signal uniformity. As a result, the limit of detection (LOD) for 2-mercaptopyridine (2-Mpy) was as low as 1.24 × 10 −12 M, with the SERS performance factor (SPF) of up to 5.0 × 10 7 . Moreover, the SERS substrate maintained good stability after storage for four weeks. In addition, the PS@MXene@Ag composite was successfully applied to the detection of other organic pollutants, including thiram and methylene blue (MB). The calibration results revealed a good linear relationship between the logarithm of concentration and the corresponding SERS intensity, with correlation coefficients (R 2 ) of 0.99 and 0.98, respectively. The LODs for thiram and MB were calculated to be 1.96 × 10 −10 M and 2.33 × 10 −10 M, respectively, and satisfactory recovery rates were obtained in practical sample analyses (orange peel and fish skin). These results demonstrate that the fabricated PS@MXene@Ag SERS substrate has promising potential for the detection of organic molecular pollutants. Download: Download high-res image (129KB) Download: Download full-size image PS@MXene@Ag as a SERS-active substrate for the detection of organic pollutants.
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产品关联
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高影响因子
Journal of Materials Chemistry B
·
2026
·
IF 6.2
Fugang Li,Qiang Li,Feng Chen,Chenxu Yan,Yongxi Zhao,Zhiqian Guo
High sensitivity and accuracy in detecting the myocardial damage biomarker, human cardiac troponin T (cTnT), is critical for the early diagnosis of acute myocardial infarction. However, conventional chemiluminescent (CL) probes suffer from instability, poor solubility, and inadequate bioavailability, which limit their clinical utility. Here, we describe a novel nanosized CL system (lucigenin@PS-COOH) for cTnT detection, wherein carboxyl polystyrene (PS-COOH) microspheres encapsulate lucigenin, significantly enhancing stability, water dispersibility, and antibody conjugation. Compared with traditional CL probes, lucigenin@PS-COOH exhibits exceptional stability, biocompatibility, and CL signal intensity. In addition, lucigenin@PS-COOH demonstrates excellent linearity with clinical data from Longhua Hospital, suggesting strong potential as a clinical assay for cTnT detection in real-world patient samples. Thus, lucigenin@PS-COOH can serve as a powerful tool for accurate cTnT detection in clinical settings and facilitate further research into the role of cTnT in disease.
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DOI
PubMed
高影响因子
Catalysts
·
2026
·Vol. 16
·期 3
·214
·
IF 4.5
Yuanhua He,Nengfeng Gong,Li Dong,Shanshan Liu,Yong Yang,Yulei Zhu,Yafang Li,Jiale Song,Guoqiang Ding
A series of nickel phyllosilicate catalysts (Ni-PS-T, where T represents the calcination temperature in °C) were synthesized via he ammonia-evaporation method and calcined at different temperatures to investigate their performance in the hydrogenation of 5-hydroxymethylfurfural (HMF). Characterization by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) revealed that increasing the calcination temperature (300–1100 °C) triggered a phase evolution from the 1:1-type (tetrahedral-octahedral) to the 2:1-type (tetrahedral-octahedral-tetrahedral) Ni-PS, eventually leading to phase separation into NiO and SiO2. The content of the 2:1-type crystalline phase, H2adsorption capacity, and C=O hydrogenation activity of HMF all exhibited a volcano-shaped trend with calcination temperature. Under the conditions of 100 °C and 2.5 MPa H2, Ni-PS-800 enabled HMF hydrogenation with a conversion of 90% and a selectivity of 84% to 2,5-dihydroxymethylfuran (DHMF), in which the catalyst exhibited good stability during five consecutive HMF hydrogenation cycles. The enhanced catalytic performance of Ni-PS-800 is attributed to its high 2:1-type phase fraction, which promotes a pronounced hydrogen-spillover effect and significantly enhances the intrinsic activity for C=O hydrogenation.
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DOI
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2025
·
IF 1.8
Huiling Jia,Sen Li,Menghao Liang,Jinxiu Wu,Xin Tan
The cationic surfactant hexadecyltrimethylammonium bromide (CTAB), Ce (NO 3 ) 3 ·6H 2 O, and ammonium nitrate/ethanol mixed solution were used as the mesoporous guiding template, the cerium source, and the selective solvent. PS@ m CeO 2 abrasives were synthesized using polystyrene (PS) as the core and mesoporous ceria ( m CeO 2 ) as the shell. The properties of PS@ m CeO 2 abrasives were examined by field emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR), small-angle X-ray diffraction (XRD), HRTEM, X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption–desorption. The results showed that m CeO 2 was completely coated on the PS, with the PS core size of 240 nm and the m CeO 2 shell thickness of 15–20 nm. The content of O vacancies and Ce 3+ increased in the m CeO 2 shell. Irregular mesopores were formed in the shell. Young's modulus ( E ) and polishing property of CeO 2 abrasive, PS@CeO 2 composites, and PS@ m CeO 2 composites were measured by atomic force microscopy. The E of core@shell-structured composites significantly decreased. The PS@ m CeO 2 composites reduced mechanical damage and scratches and improved the material removal rate to 172 nm/min.
研究领域:
材料科学
·
纳米技术
·
表面科学
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产品关联
DOI
高影响因子
Processes
·
2022
·Vol. 10
·期 1
·124
·
IF 3.352
Xiao Ma,Zhenjun Wang
Ciprofloxacin (CIP), as a common antibiotic used in human clinical and livestock farming, is discharged into natural water bodies and its concentration has increased in the last years. Its stable chemical structure is difficult to remove by conventional techniques. Residual ciprofloxacin in the environment has become an emerging micropollutant that promotes the generation of resistance genes of bacteria and endangers ecosystem balance and human health. Removal of ciprofloxacin from water by the system of ultrasound/electric field/sodium persulfate (US/E/PS) was investigated. Firstly, CIP degradation affects by different oxidation methods, such as ultrasonic oxidation, electro-oxidation, and persulfate oxidation, and their four combined oxidation methods (ultrasound-activated persulfate oxidation, electro-activated persulfate oxidation, ultrasound-enhanced electro-oxidation, and ultrasound-enhanced electro-activated persulfate oxidation), on the target contaminants were compared. Secondly, the influences of parameters on the CIP degradation by an ultrasound-enhanced electro-activation-persulfate reaction system were investigated. Thirdly, the possible free radical species in the ultrasound-enhanced electro-activation-sulfate reaction system were identified and the dominant free radical species in the system were analyzed. Finally, the samples of CIP in the US/E/PS system were tested by liquid mass spectrometry, and the possible intermediate products and degradation path were speculated. The results indicate that the US/E/PS system is of great potential application value in the removal of organic pollution and environmental purification.Keywords:ultrasound;antimicrobial drug;degradation;ciprofloxacin
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Polymers
·
2020
·Vol. 12
·期 3
·574
·
IF 3.426
Zhicai Zhu,Liqin Yao,Qilong Zhang,Hui Yang
In this paper, homogeneous polystyrene (PS) microspheres with controllable sizes of 40 nm, 80 nm, and 120 nm were synthesized by controlling the temperature of solvothermal method. In order to explore the effect of PS microspheres on dielectric-hydrophobic properties of the composite films, the composite films containing polystyrene, Polydimethylsiloxane, and P(VDF-TrFE) with high dielectric and hydrophobicity were successfully prepared by a simple and feasible solution blending method. The dielectric constant and hydrophobicity of composite films were boosted by increasing the mass fraction of PS content and decreasing the size of PS due to the enhanced interfacial polarization and the uniform surface micro bulge structure. Meanwhile, the composite films maintain a low loss tangent. Typically, the dielectric constant with 5 wt.% 40 nm PS reached to 29 at 100Hz, which is 4 times that of PDMS/P(VDF-TrFE) (mass ratio: 2/3). Otherwise, the largest the contact angle of 126° in the same composition was remarkably larger than the pure PDMS/P(VDF-TrFE) (110°). These improved properties have more potential applications in the electric wetting devices.Keywords:dielectric properties;hydrophobicity;micro bulge structure;interfacial polarization
研究领域:
材料科学
·
物理学
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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）