JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 12
·9321-9327
·
IF 2.22
Liu Zhen,Chen Dihu
The mixtures of Gd 2 O 3 :Yb 3+ /Er 3+ and Gd 2 O 3 :Yb 3+ /Ho 3+ nanoparticles were successfully prepared via pulsed laser ablation in liquid followed by solution mixing. Under excitation of 980 nm diode laser, tunable color from green to red emission was achieved. Based on the thermal linked energy levels, the temperature sensitive upconversion emission was observed. The fluorescence intensity ratio ( FIR ) of I 513–530 nm / I 530–580 nm increased as the elevation of temperature. The absolute sensitivity and relative sensitivity were derived from temperature dependent FIR . The results show that the mixture of Gd 2 O 3 :Yb 3+ /Er 3+ and Gd 2 O 3 :Yb 3+ /Ho 3+ nanoparticles are not only potential candidates for multicolor upconversion luminescence but also promising optical materials for non-contact optical thermometry.
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COLLOID AND POLYMER SCIENCE
·
2026
·
IF 2.9
Peng Xingwei,Zhou Wenyun,Huang Sen,Yao Anrong,Zhou Meng,He Yanping
The practical application of eugenol, a valuable bioactive compound, is significantly hindered by its inherent volatility and chemical instability. Conventional encapsulation systems often fail to provide adequate protection and lack intelligent release capabilities. This study presents an innovative solution using white beeswax as a smart shell material, leveraging its unique temperature-dependent crystalline structure for controllable release. Through systematic optimization of melt-dispersion parameters—specifically a 1:5 oil-to-water ratio, 100 mL Poloxamer F68, and 800 r/min stirring rate—we successfully fabricated eugenol-loaded microcapsules with uniform particle size (60–80 μm). Comprehensive characterization revealed their rough surface morphology, enhanced thermal stability, and robust mechanical properties, evidenced by an average rupture force of 4.09 mN. The microcapsules demonstrated exceptional temperature-responsive behavior: providing sustained release over several days at 20 °C while achieving complete release within hours at 45 °C. Remarkably, the release rate could be dynamically and reversibly modulated through temperature cycling between these points, attributed to the reversible crystalline-to-amorphous transitions of the beeswax matrix. Kinetic analysis established that this intelligent release follows first-order kinetics, indicating a diffusion-dominated mechanism through the wax matrix. This work not only establishes an optimized preparation protocol but also provides fundamental insights into the release mechanisms, offering a robust platform for developing smart delivery systems with promising applications in temperature-activated food packaging and dermatological therapeutics.
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CHINESE JOURNAL OF POLYMER SCIENCE
·
2026
·
IF 4.6
Yang Xu-Xuan,Luo Zhen,Shao Jia-Xing,Feng Xue-Quan,Xu Zi-Yang,Cui Chun-Yan,Liu Wen-Guang
Oral ulcers, a prevalent oral mucosal condition, involve epithelial discontinuity, tissue fluid loss, reactive oxygen species accumulation, and bacterial infection. Dynamic saliva flow and physical friction from food residues further aggravate the damage and delay healing. To address this problem, we developed a stable PolyLA-based adhesive patch by combining α -lipoic acid (LA) and betaine (BET) using a simple one-step solvent evaporation method, referred to as PolyLA/BET. The carboxylate and tertiary ammonium groups on BET formed multiple hydrogen bonds with PolyLA, effectively inhibiting the depolymerization of LA. PolyLA/BET firmly adheres to oral tissues via hydrogen bonding mediated by surface carboxyl groups. Moreover, zwitterionic structure of BET enabled the patch to absorb and retain water. Upon hydration, the patch maintains structural stability while acquiring flexibility and adhesiveness, which are essential characteristics for durable sealing and the formation of a stable moist wound healing microenvironment. The patch also sustained the release of LA, providing antioxidant and antibacterial activities. In a rat oral ulcer model, PolyLA/BET outperformed the commercial patch in promoting wound healing.
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NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY
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2026
·
IF 4
Lin Jie,Jin Guoxin,Zhang Ling,Weng Xiu,Wu Kecheng
The short half-life of fibroblast growth factor 21 (FGF21) in vivo limits its clinical application in acetaminophen (APAP)-induced acute liver injury (ALI). This study aimed to construct a novel PLGA-based nanoparticle delivery system for FGF21 and to investigate its protective effects and underlying mechanisms in APAP-induced ALI. PLGA-FGF21 nanoparticles were prepared using a double-emulsion solvent evaporation method and characterized by transmission electron microscopy and Zetasizer Nano for morphology, size, and stability. Their release profile and cytotoxicity were evaluated in vitro using AML12 cells, while hepatoprotective effects were assessed in an APAP-induced ALI mouse model. Histopathology, biochemical assays, immunofluorescence, and Western blot were employed to examine liver function, oxidative stress, and molecular mechanisms. The nanoparticles displayed uniform spherical morphology with an average size of 222.04 ± 1.08 nm and remained stable for 7 days in aqueous suspension. Encapsulation conferred sustained-release properties, and the particles showed no cytotoxicity while maintaining biological activity for at least 28 days. In vivo, PLGA-FGF21 significantly alleviated APAP-induced liver damage, reduced serum ALT and AST, and exhibited superior hepatoprotective efficacy compared with free FGF21. Furthermore, it suppressed inflammatory responses by decreasing TNF-α and MDA levels, while enhancing antioxidant defenses through increased SOD activity. Mechanistically, PLGA-FGF21 activated the PGC-1α/Nrf2/HO-1 signaling pathway, contributing to enhanced anti-inflammatory and antioxidant effects. PLGA-FGF21 nanoparticles provide potent protection against APAP-induced ALI by reducing inflammation and oxidative stress, which may be associated with activation of the PGC-1α/Nrf2 signaling pathway, offering a promising strategy for FGF21-based therapy in liver injury.
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PubMed
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JOURNAL OF ELECTRONIC MATERIALS
·
2026
·
IF 2.8
Xie Jinsong,Zhang Haojie,Li Yanxin,Liu Tianqi,Du Yaxin
In this work, zinc ferrite nanoparticle-modified tubular graphitic carbon nitride (ZnFe 2 O 4 /g-C 3 N 4 , ZFO/CN) was fabricated via an ultrasound-assisted self-assembly approach. The resulting ZFO/TCN composite features an optimized mesoporous structure, characterized by a specific surface area of 71.35 m 2 /g and average pore size of 10.32 nm, with both values intermediate to those of the individual constituents. The composite exhibited significantly enhanced photocatalytic performance, degrading 93.5% of tetracycline (TC) within 1 h and 98.7% of rhodamine B (RhB) within 20 min. Moreover, the catalyst maintained high photocatalytic activity after four consecutive recycling experiments, demonstrating excellent reproducibility and stability. Free radical trapping experiments indicated that superoxide radicals (·O 2 − ) play a major role in the photocatalytic process. The energy band structure and charge transfer pathways of the catalyst were probed by solid-state ultraviolet diffuse reflectance spectroscopy (UV-Vis DRS) and Mott–Schottky measurements. The separation and transport efficiency of photogenerated charge carriers were systematically evaluated through transient photocurrent response and electrochemical impedance spectroscopy. Accordingly, a Z-scheme heterojunction structure was proposed for the ZFO/CN composite, along with a corresponding photocatalytic mechanism. This study offers new insights for the purification and treatment of wastewater.
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WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 11
·646
·
IF 3.5
Xiao Yongbo,Gao Yanjiao,Bai Fan,Xiao Jing
The increasing contamination of aquatic environments by antibiotics calls for efficient, economical, and environmentally sustainable remediation technologies. This study presents a zero-valent iron (ZVI)-activated periodate (IO 4 − ) advanced oxidation system for the degradation of oxytetracycline (OTC) in water. Under optimized conditions (pH = 3, ZVI = 1.64 g/L, IO 4 − = 1.97 mM), the ZVI/IO 4 − system achieved 81.16% OTC removal. Notably, coupling with UV irradiation enabled complete OTC degradation within 50 min, demonstrating substantial enhancement over the standalone system. Mechanistic investigations revealed that IO 3 • , 1 O 2 , and O 2 •− were the dominant reactive species, and three degradation pathways were proposed based on LC–MS analysis. The system exhibited excellent performance in real water matrices, achieving 78.0% and 71.9% OTC removal in tap water and lake water, respectively, along with strong tolerance to coexisting ions and humic acid. Importantly, the ZVI catalyst retained 96.4% of its initial activity after five consecutive cycles, significantly reducing operational costs and secondary pollution risks. This work provides an efficient, stable, and cost-effective treatment strategy for antibiotic-contaminated water, holding strong promise for practical engineering applications.
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JOURNAL OF FLUORESCENCE
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2026
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IF 3.4
Zhou Pingping,Hu Zhongshuang,Liu Wenfei,Ji Jing
Surfactants are widely used across diverse industries. Critical micelle concentration (CMC) is a key parameter governing their performance. While various established methods exist for characterizing CMC, there remains an urgent need for more sensitive, visually detectable, and versatile detection technologies to keep pace with the rapid advancement of novel surfactants. Herein, we report the development of a fluorescent probe SP-18, which synthesized by introducing a long alkyl chain into a low-toxicity fluorescein dye. By incorporating a hydrophobic n-octadecyl chain into the water-soluble fluorescein dye, the probe aggregates in aqueous media, leading to fluorescence quenching. Upon the addition of surfactants, (including anionic surfactant SDS, cationic surfactant DTAB, zwitterionic surfactant SB3-12, and nonionic surfactant Triton X-100), the probe inserts into the micelles that form. This leads to dissociation of fluorescent aggregates and triggers a fluorescence “turn-on” response. Specifically, SP-18 exhibits distinct spectral shifts (e.g., a blue-shifted emission and unique absorption changes) for SDS, enabling its selective identification among the four surfactant types. This work provides the probe SP-18 as a dual-function tool for robust CMC determination and specific surfactant identification.
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PubMed
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Reaction Kinetics Mechanisms and Catalysis
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2026
·
IF 2.1
Wu Shengmin,Mei Caihua,Yang Gong,Yao Lei
Waste-derived magnesia brick powder (WMBP), enriched in magnesium oxide (MgO) and abundant Lewis acid–base surface sites, was employed as a robust heterogeneous catalyst for the catalytic ozonation of methylene blue (MB). Non-linear kinetic fitting demonstrated that the WMBP/O₃ system followed an apparent first-order degradation pathway with a rate constant of 0.2563 ± 0.011 min⁻ 1 , approximately 15-fold higher than that of sole ozonation (0.0165 ± 0.002 min⁻ 1 ). Mineralization was similarly enhanced, with total organic carbon (TOC) decay accelerating from 0.0035 ± 0.0011 min⁻ 1 (single ozonation process) to 0.0693 ± 0.0102 min⁻ 1 (catalytic ozonation process). Electron spin resonance analysis and selective quenching experiments confirmed the simultaneous generation of •OH, O₂•⁻, and 1 O₂, indicating a hybrid radical/non-radical oxidation regime. Ultra-high-performance liquid chromatography coupled with tandem mass spectrometry characterization revealed a sequential degradation pathway involving N-demethylation, S-oxidation, hydroxylation, and aromatic ring-opening. The WMBP catalyst exhibited excellent long-term stability over ten reuse cycles, maintaining > 90% degradation efficiency through the fourth cycle and > 78% even after the tenth cycle, highlighting its structural resilience and sustained ozone-activation capability. These findings provide new mechanistic insights into MgO-mediated catalytic ozonation and underscore the circular-economy potential of valorizing refractory industrial waste into a high-performance reusable catalyst.
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JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2026
·Vol. 34
·期 3
·60
·
IF 5.6
Ali Muhammad Amir,Jiang Yongchao,Tang Keyong
To enhance the biological activity of Sargassum fusiforme , a brown algae, polysaccharides were extracted and degraded using two methods: ultrasound-assisted hydrochloric acid (yielding U-SFP) and α-amylase-assisted hydrolysis (yielding M-SFP). A Box-Behnken response surface design (BBRS) was used to optimize the degradation conditions. Structural changes before and after treatment were analyzed, including molecular weight variations during in vitro digestion. The relationship between the structural characteristics and antioxidant activity of the degradation products was established, revealing significant impacts on surface morphology, solubility, crystallinity, and triple-helix structure. The DPPH radical-scavenging activities of U-SFP and M-SFP were 0.106 mg/mL and 0.045 mg/mL, respectively, compared to 0.029 mg/mL for native SFP. Similarly, the ferric reducing power of both U-SFP and M-SFP was significantly higher than that of native SFP. These results demonstrate that controlled degradation enhances the antioxidant capacity of Sargassum fusiforme polysaccharides, highlighting their potential for industrial and biomedical applications.
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ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
·
2026
·Vol. 48
·期 5
·227
·
IF 4.3
Zeng Yue,Liu Zhennan,Jiang Yajie,Li Yunqin,Yu Wei,Yu Rong,Xu Xiang,Xiao Meiling
Arsenic (As), particularly in its bioavailable species of inorganic As(Ⅲ) known for its significant toxicity and mobility, is a carcinogenic risk to humans. Serving as an innovative analytical tool, the diffusive gradients in thin films (DGT) technique facilitates on-site detection of bioavailable metals. However, the options of DGT binding gels tailored for As(Ⅲ) detection remain elusive. This study undertook the modification of tetraethyl orthosilicate with a 3-mercaptopropyl-trimethoxysilane to synthesize cost-effective nanomaterials endowed with the capacity for selective adsorption of As(Ⅲ) through copolymerization and atmospheric pressure drying. The synthesized materials were systematically characterized using X-ray diffraction, scanning electron microscopy, and C/H/N/S elemental analysis, revealing a specific surface area of 472.39 m 2 /g, a particle size of 12.7 nm, and a loading capacity of 3.115 mmol/g. The DGT combined with gel prepared from this material has a specific affinity for As(III) without adsorbing As(V).Its adsorption efficiency for As(III) may reach 84.5% within the first hour. This DGT technique has a linear detection range of 0.5–15 mg/L (R 2 = 0.99995), an elution recovery of 85.1%–102.7% (RSD < 10%, n = 3), and a maximum adsorption capacity of 301.7 μg/cm 2 , meeting requirements for long-term environmental monitoring. The experiment studied the effects of interfering factors, including pH values ranging from 3–9, ionic strength of 10–500 mmol/L NaNO₃, Fe 2 ⁺ 0–5.0 mg/L, Mn 2 ⁺ 0–1.0 mg/L, As(V) 0–5.0 mg/L, dissolved organic carbon 0–20.0 mg/L, SO₄ 2 ⁻ 0.55–1.10 g/L, and PO₄ 3 ⁻ 5.0–10.0 mg/L. The device maintained a stable treatment performance under all these conditions. When the DGT device was deployed in spiked river water, estuarine water, and seawater, a comparison of its adsorption performance with existing methods showed that the device had a comparable adsorption performance and demonstrated excellent long-term stability in practical water environment applications.
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Advanced Fiber Materials
·
2026
·
IF 22.6
Yin Juhui,Liu Haoxin,Zheng Yu,Zhang Puqin,Fan Tianyu,Wu Hongyan,Zong Dingding,Liu Yong,Li Yuyao
To effectively ensure the safety of workers in harsh working environments, it is crucial to develop a flexible aerogel sensor that integrates real-time monitoring and physical protection functions. Here, a parallel-sheet structured poly(amide-imide)/bismaleimide/benzoxazine (PAI/BMI/BA-a) fiber aerogel (denoted as PSPBB) was fabricated by ingeniously establishing the bridge-mediated dual affinity between fibers and ice crystals. Benefiting from the interactions of poly(styrenesulfonate) (PSS) with ice crystals, conductive poly(3,4-ethylenedioxythiophene) (PEDOT):PSS chains underwent oriented assembly along with the directional growth of ice crystals, while being stably anchored to fibers by virtue of the interactions of PSS with polydopamine (PDA) on the fiber surface. The resultant PSPBB aerogels exhibited a robust scaffold, outstanding fatigue resistance (over 90% height retention after 200 compression cycles), stable sensing performance under 8000 compression cycles, and ultra-wide temperature adaptability (−196 °C to 200 °C). Additionally, the parallel sheets within porous aerogels contributed good thermal-insulation properties, providing real-time monitoring for physiological signals while also offering a critical personal protective barrier. These results underscore the potential of PSPBB aerogels for use in demanding sectors, such as industrial safety, firefighting, and aerospace. Graphical
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Journal of Inorganic and Organometallic Polymers and Materials
·
2026
·
IF 6
Zhao Shuwei,Gao Zhongzhe,Tu Qunzhang,Shen Xinmin,Yin Qin,Yang Xiaocui,Liu Qing,Yang Fei,Wang Enshuai,Peng Wenqiang,Xu Ting
The bending of one‑dimensional (1D) fibrous fillers, such as multi‑walled carbon nanotubes (MWCNTs), within a composite matrix often results in an overestimation of the thermal conductivity (TC) enhancement—an effect commonly overlooked in conventional modeling. In this work, a uniformly dispersed 4.2 phr MWCNTs/natural rubber (NR) composite prepared by solution blending served as the model system, exhibiting a 125% increase in TC. A simple image‑derived parameter \(\gamma\) was introduced to quantify the fiber curvature based on transmission electron microscopy (TEM). Finite‑element models of MWCNTs constructed with random Bézier curves yielded an average \(\gamma=\) 1.203, closely matching the TEM‑statistical value of 1.194 (< 1% error), and a range of 0.867 versus 0.909 from TEM (< 5% error). Modeling comparisons showed that a parallel‑equivalent solid cylinder model based on effective‑medium theory deviates by only 0.2% from a hollow‑tube model while substantially reducing computational cost. From the simulation data, an effective aspect ratio ( \(kₑ\) ) was derived and incorporated into the Mori–Tanaka model, correcting its underestimation of bending effects and lowering the prediction error to 6.8% relative to experimental data. The presented TEM‑based curvature characterization is broadly applicable to other 1D‑nanomaterial‑reinforced composites, and the refined Mori–Tanaka model provides improved accuracy for theoretical predictions.
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危险品化学品经营许可证（带存储）