EUROPEAN POLYMER JOURNAL
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2026
·
IF 6.8
Shiyun Lin,Jinghua Tan,Qihang Xv,Deqiang You,Sheng Cao,Xiaojian Wang
Ureteral stents are critical medical devices for the treatment of urinary obstruction, facilitating urine drainage and postoperative recovery. Clinically, stents are prone to bacterial adhesion and colonization, which leads to urinary tract infections in up to 30%–50% of patients. Meanwhile, minerals in urine tend to readily deposit on their surfaces and form encrustations. To address these issues, we developed a multifunctional double-network hydrogel coating, (P(AAm-co-SBMA)/SA-Ca 2+ ), through physical and chemical crosslinking. The crosslinking density of the hydrogel was optimized by adjusting the SBMA concentration. Compared with uncoated polyurethane ureteral stents, the coated stents exhibited a low friction coefficient of 0.28, a reduction of over 83%, which significantly improved surface lubricity. More importantly, the coated ureteral stents showed synergistic antibacterial adhesion (up to 90%) and anti-encrustation deposition properties. In vitro simulated urine experiments demonstrated that encrustation deposition was reduced by 84.46% after short-term immersion (14 days) and by 75.48% after long-term immersion (21 days). This novel coating provides an effective surface modification solution for solving the problems of ureteral stent infection and encrustation formation, holding significant clinical translation value.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Lifeng Yang,Yirun Yang,Yi Zhu,Huajiang Zuo,Dongmei Deng
Cu(II) contamination in industrial wastewater constitutes a major challenge to global environmental management as traditional treatment methods are plagued by high energy consumption, secondary pollution risks, and substantial costs. A technical strategy was developed to prepare glutaraldehyde-crosslinked sodium alginate-zeolite (SA-HZ/GA) composite adsorption membranes via phase inversion. This approach leverages zeolites' structural reinforcement and mass transfer channel formation combined with glutaraldehyde's crosslinking properties to optimize material performance. SA-HZ/GA features abundant mesopores with sizes ranging from 2 to 16 nm and exhibits fracture strength over 74% higher than pure sodium alginate membranes. At pH 5 and 25°C, its Cu(II) adsorption capacity reaches 46.80 mg/g with over 80% removal efficiency maintained after 5 cycles with 0.1 M HCl as desorbent. The adsorption process fits the Langmuir model ( R 2 = 0.999) and follows pseudo-second-order kinetics, indicating monolayer chemical adsorption. Thermodynamic analysis revealed that the adsorption was spontaneous (Δ G = −12.5 kJ/mol) and endothermic (Δ H = 28.4 kJ/mol), with a positive entropy change (Δ S = 0.14 kJ/(mol·K)) suggesting increased randomness at the solid–liquid interface. This work provides an efficient, stable, and cost-effective engineering solution for heavy metal-laden wastewater treatment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Chongming Wang,Sujie Shan,Zhengyu Yang,Xinpeng Xu,Xingning Huang,Xi Li,Songqi Liu,Boling Li,Yao Xu,Dapeng Li
Mounting evidence indicates that eliminating phosphate (P i ) alone is not enough to lower outbreak risks of undesirable algae, and synchronously sequestrating organic phosphorus species (OPs) dissolved in overlying water and residing in sediments cannot be ignored. However, more efforts were focused on the immobilization of P i than OPs because of insufficient understanding and analytical challenges. Herein, CaO 2 -loaded halloysite nanotubes/lanthanum-crosslinked sodium alginate (La-CaO 2 @HNTs/SA) hydrogel beads were newly developed and employed as a capping material for efficiently sequestrating P i and OPs from eutrophic water and sediment. Batch sorption results showed that the La-CaO 2 @HNTs/SA has a high uptake capacity towards P i (i.e., 44.05 mg-P/g) and Myo -inositol hexakisphosphate (IHP, a representative pollutant of OPs, 36.28 mg-P/g), and good selectivity for P in the presence of NO 3 – , Cl − , and HCO 3 – , profited by synergy of electrostatic attraction, inner-sphere complexation, surface precipitation, and partial degradation. After applying La-CaO 2 @HNTs/SA, P levels in overlying water could rapidly reduce from 0.95 to 0.01 mg-P/L within 120 min. Further thin-layer capping experiments (60 days) indicated that La-CaO 2 @HNTs/SA performed very well in immobilizing P i and OPs in overlying and pore waters and enhancing reductant-soluble P transformation (BD-P; ∼19 % to 11 %) to more stable HCl-extracted P (HCl-P; ∼33 % to 43 %) in sediments under continuous P input, with minor effect on benthic microorganisms. These findings advance the use of eco-friendly La-CaO 2 @HNTs/SA in eutrophication alleviation via simultaneous sequestration of P i and OPs.
研究领域:
环境科学
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水污染治理
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121666
·
IF 7.5
Jianjun Chen,Qian Zhao,Hongxing Shi,Ying Li,Limin Wang
The coexistence of cationic and anionic dyes in wastewater necessitates the development of amphoteric adsorbents. Herein, amphoteric hydrogel microspheres SA-S@PDA-H was successfully fabricated for their simultaneous removal. The microspheres were synthesized by crosslinking sodium alginate (SA) with Ca²⁺, followed by coating with polydopamine (PDA) and stearyl trimethyl ammonium chloride (STAC). The microspheres prepared through acid treatment to replace STAC was labeled SA-S@PDA-H, endowing the microspheres with enhanced adsorption capacity. FT-IR, SEM, zeta potential was utilized to characterize the structure and morphology of SA-S@PDA-H. The adsorption behavior and mechanism of SA-S@PDA-H for cationic and anionic dyes was investigated in depth. The results show SA-S@PDA-H exhibit 127.3 % of swelling ratio. The adsorption of SA-S@PDA-H for MB and MO reaches equilibrium at about 300 min followed by PSO model. The adsorption process of SA-S@PDA-H for MB and MO followed Temkin and Dubinin-Radushkevich model, respectively, and the maximum adsorption capacity displayed 869.1 mg/g at 45°C and 730.9 mg/g at 15°C, for MB and MO, respectively. MB adsorption increased with higher temperature and pH, while MO adsorption increased with lower temperature and pH. Adsorption of both dyes decreased at high ionic strength, and Cu 2 + and Fe 3+ had a significant inhibitory for MB than K + , while the inhibitory effects of SO 4 2- or CO 3 2- is more obvious for MO than Cl - . SA-S@PDA-H exhibited excellent adsorption performance for mixed cationic and anionic dyes through synergistic effects including electrostatic interactions, hydrogen bonds, π-π stacking and micropore filling. The microspheres maintained over 80 % removal efficiency after five consecutive adsorption-desorption cycles.
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高影响因子
Regenerative Therapy
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2026
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IF 4
Ke Zheng,Jingwen Xiao,Jiacheng Qian,Guijuan Feng,Xinyue Zhang,Dan Huang,Shiyu Shi,Ke Xu
Introduction Bone tissue defects frequently occur following trauma, bone tumor resection, and orthopedic surgery. The complex local microenvironment serves as a critical factor impeding bone tissue repair. Cell-based scaffolds typically exhibit stable physicochemical properties, provide a favorable growth microenvironment. Hydrogels and electret membranes have been widely applied in bone tissue engineering. Methods In this study, we fabricated polyvinylidene fluoride (PVDF) electret membranes and sodium alginate/sodium hyaluronate (SA/HA) double-network hydrogels separately, and systematically characterized their physicochemical and biological properties. Results Following verification of their favorable biocompatibility, we found that the combined application of SA/HA@PVDF composites significantly enhances calcium nodule formation in human dental pulp stem cells (DPSCs) in vitro. In addition, the expression levels of osteogenic marker proteins were elevated in the SA/HA@PVDF group and were significantly higher than those in the single-agent application groups, indicating that SA/HA@PVDF exhibits a stronger capacity to promote the osteogenic differentiation of DPSCs in vitro. Subsequently, rat mandibular defect models were established, and PVDF electret membranes, SA/HA hydrogels, and SA/HA@PVDF composites were transplanted into the defect sites. The results of micro-computed tomography, hematoxylin-eosin staining, Masson staining, and immunohistochemical staining demonstrated that the composite scaffold significantly accelerated the repair of mandibular bone defects. Conclusions Our findings may provide novel insights into the combined application of electret membranes and hydrogels in bone regeneration.
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PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Leheng Wang,Jiyao Zhou,Zimeng Chen,Yi Lu,Guang Huang,Yechen Hu,Changgao Huang,Bangbang Wei,Yun Chen
Trypsin inhibitors (TIs) are common anti-nutritional factors in legumes and grains, necessitating reliable detection for food nutrition assessment and feed safety control. This study took advantage of immobilized enzymes and successfully constructed an efficient magnetic core-shell composite material, Fe 3 O 4 @SA/Trypsin@UiO-66. Within this structure, the sodium alginate (SA) hydrogel provides a mild microenvironment for trypsin immobilization, while the outer UiO-66 metal-organic framework (MOF) shell not only enhances the nanoreactor's stability but also improves substrate enrichment and catalytic efficiency through a nanoconfinement effect. The nanoreactor exhibits robust magnetic separability, well-retained catalytic activity, and long-term applicability. Systematic performance studies revealed that, compared to free enzyme, the nanoreactor exhibited enhanced stability under freeze-thaw cycles and across broad pH (2-11) and temperature (25-70 °C) ranges, maintaining over 70% of its initial activity after multiple uses. In practical sample detection, the established nanoreactor system, which uses the nanoreactor as the core material and benzoyl- l -arginine ethyl ester (BAEE) as the substrate, was successfully applied to analyze TI content in various grain flours and fish feeds. In addition, the results provide evidence supporting the role of thermal processing in reducing TI activity. This research provides a reliable approach for the efficient detection of anti-nutritional factors in complex matrices.
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高影响因子
Journal of Materials Chemistry A
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2026
·
IF 9.2
Wei Li,Naili Tao,Yaoyao Wang,Shengchao Yang,Zhiyong Liu,Guihua Meng,Jiayu Yan,Jianning Wu
Adsorption-based atmospheric water harvesting (AWH) is a promising approach to address freshwater scarcity, particularly in arid regions. The performance of AWH largely depends on the adsorbent. Traditional adsorbents often suffer from low moisture uptake and high regeneration temperatures, while emerging adsorbents such as polymer gels and metal-organic frameworks (MOFs) also face challenges like complex synthesis procedures. Although MOFs can adsorb water vapor under low-humidity conditions, their practical application is limited due to their powdered form.Here, we propose a composite aerogel adsorbent, PPy-MOF-303@SA, synthesized via directional freezing, which uses sodium alginate aerogel as the matrix, MOF-303 as the hygroscopic component, and polypyrrole as the photothermal component. By loading MOF onto the aerogel, the limitations of powdered materials are overcome. The vertically aligned channels formed in the aerogel enhance adsorption kinetics, while polypyrrole improves the photothermal conversion capability.The composite adsorbent achieves a water uptake of 0.39 g/g at 25°C and 30% relative humidity, reaching equilibrium within 60 minutes. Under 1 kW•m⁻² solar irradiation, the surface temperature reaches 72.7°C, with a desorption ratio of 96.73%.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
·
IF 8.128
Handan Liu,Yanyan Liu,Dan Xu,Long Chen,Wen Guo,Tiantian Gu,Feng Yu,Gang Wang
Ti 3 C 2 T x , a member of the MXene, has attracted extensive interest because of its high conductivity, unique two-dimensional (2D) structure and intrinsic pseudocapacitance for supercapacitors. Flexible and freestanding Ti 3 C 2 T x films are promising electrodes for functioned supercapacitors used in wearable and portable electronic devices. However, the severe self-restacking of 2D Ti 3 C 2 T x nanosheets restraints their practical application. Herein, freestanding and flexible three-dimensional (3D) cross-linked Ti 3 C 2 T x -Ca-SA (sodium alginate) films with expanded Ti 3 C 2 T x interlayer spacing are reported. The expanded interlayer spacing allows more electrolyte ions to quickly intercalate providing more intercalation pseudocapacitance, while the 3D cross-linked microstructure ensures a continuous conductive network facilitating charges transport. Attributing to the unique structure, the Ti 3 C 2 T x -Ca-SA film delivers an outstanding areal capacitance (633 mF cm −2 at 5 mV s −1 ). Meanwhile, the assembled all-solid-state pseudocapacitor shows good flexibility and capacity stability under various bending conditions. The device exhibits a high energy density up to 12.6 µWh cm −2 at the power density of 375 µW cm −2 and excellent cycling stability, which are much better than prior reported state-of-the-art supercapacitors. This research exploits a simple method to optimize the structure of MXene as state-of-the-art electrodes for high-performance flexible energy-storage devices.
研究领域:
材料科学
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能源存储
·
纳米技术
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Bin Wang,Xiaoling Hu,Lu Li,Yi Xie,Rongfan Chen,Wenbin Guo,Hongyu Wang,Mingfei Wang,Jian Shi,Ling Chen,Dao Zhou
Adsorption-based technology provides a feasible alternative for phosphorus control in waterbodies. Herein, La-biochar derived from toxic sludge was encapsulated into polymer matrix as functional filler, and then surface modification on formed hydrogel via in-situ polymerization of polydopamine (PDA) was realized to achieve enhanced phosphate removal from water. Effects of biochar content and PDA coating time on adsorption performance were investigated, and optimized composite beads could achieve experimental maximum capacity of ∼13.74 mg P/g. Solution pH study implied favorable adsorption at pH 4–6, and coexisting anions noticeably facilitated phosphate capture owing to hydrogel swelling while reverse effect was observed for cation Ca 2+ . Kinetic study showed phosphate adsorption was chemisorption in nature, and overall adsorption process was mainly controlled by intraparticle diffusion stage. Adsorption isotherm using different samples suggested the transformation of sorption form from multilayer heterogeneous adsorption to monolayer homogeneous adsorption after PDA coating on hydrogel surface. Thereafter, the reusability of as-prepared hydrogel was investigated through cyclic adsorption–desorption experiments, and continuous treatment of phosphate-enriched water was conducted to evaluate its potential for practical application. This work could provide useful implication to the development of functional composite hydrogels for phosphate removal.
研究领域:
环境科学
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材料科学
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高影响因子
CRYSTAL RESEARCH AND TECHNOLOGY
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2021
·Vol. 56
·期 4
·2000187
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IF 1.639
Huifeng Hu,Fugen Liang,Haidong Zhu,Xiumei Zhang,Kecong Cui,Hridam Deb,Yong Zhang
The single crystal form and uncontrollable topography of CaCO 3 in nature severely restrict its product grade and application. Meanwhile, lignin is still not utilized efficiently. In order to improve this, three types of lignin monomer model compounds as p -coumaric acid (PCA), ferulic acid (FA), and sinapic acid (SA) are employed to induce the growth of CaCO 3 to investigate the relationship between lignin structure and CaCO 3 crystallization. The synthesized PCA and CaCO 3 composite crystals (PC-ACCs), FA and CaCO 3 composite crystals (F-ACCs), and SA and CaCO 3 composite crystals (S-ACCs) are characterized by field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and Fourier transmission infrared spectroscopy (FTIR) to ascertain their molecular structures and crystal information. The growth rule of the acid and CaCO 3 composite crystals (ACCs) induced by the three units is also explored. The results show that the vaterite and calcite of ACCs can be formed selectively. In the presence of PCA, FA, and SA, pH is the key factor on the phase selection of ACCs. The temperature and organic acid type also play important roles on the formation of CaCO 3 . The ACCs present distinguishing surface topographies at different temperatures. The number of methoxyl in the PCA, FA, and SA decides the phase ratio of vaterite and calcite in the ACCs.
研究领域:
材料科学
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化学
·
环境科学
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高影响因子
Journal of Environmental Chemical Engineering
·
2024
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IF 7.4
Yimu Qiao,Xue Han,Feiyong Chen,Cuizhen Sun,Linxu Xu,Rupeng Liu,Xue Shen
To guide the practical application of ozonation and adsorption coupled with ceramic membrane technology , the mitigation mechanisms of O 3 pre-oxidation, powdered activated carbon (PAC) pre-adsorption, and combined O 3 -PAC pretreatment on membrane fouling caused by natural organic matter (NOM) were investigated. The membrane and water quality were characterized by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), three-dimensional fluorescence-parallel factor analysis (PARAFAC-EEM), dissolved organic carbon (DOC), laser particle size and Zeta potential . Results showed that the membrane flux decline caused by humic acid (HA), sodium alginate (SA), bovine serum albumin (BSA) and surface water were alleviated by 35.2%, 55.2%, 31.0% and 59.0% after O 3 -PAC pretreatment. Meanwhile the removal rates of HA, SA and BSA were 26.2, 74.8% and 42.3%, respectively. The combination of PAC and O 3 can effectively control the membrane fouling caused by HA and SA. Ozonation can degrade organic matter into small molecules, and PAC has high adsorption to these small molecules, by recycling PAC can take away this part of organic matter, thereby reducing membrane fouling. O 3 showed no obvious advantage for membrane fouling caused by BSA, and the decrease of membrane fouling was mainly attributed to the adsorption of PAC. This investigation highlights the potential mechanism of O 3 -PAC in alleviating the membrane fouling caused by different organic compounds, contributing to the efficient and low-carbon operation of the production.
研究领域:
环境工程
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水处理
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膜技术
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Kai Zong,Dongshun Deng
In this study, we proposed a robust and efficient accelerator-silicic acid (SA) to support metal chlorides (MCl x ) as adsorbents for NH 3 adsorption and separation. Their structures and NH 3 adsorption performance were systematically investigated. Results revealed that SA with abundant hydroxyl group could dissociate and immobilize MCl x to realize synergistic M x + –NH 3 coordination and Cl - –NH 3 hydrogen bonding. Meanwhile, the interactions between the MCl x and SA significantly reduced the desorption energy of the adsorbent. The outstanding LiCl-3@SA composite demonstrated remarkable NH 3 adsorption capacity of 17.20 mmol NH 3 /g-adsorbents at 30 °C and 1.0 bar and adsorption enthalpy of −50.23 kJ/mol. Present work provided valuable information on deep understanding of MCl x −porous support interactions and strategy to design efficient composites for NH 3 capture.
研究领域:
化学工程
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材料科学
·
环境科学
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高影响因子
危险品化学品经营许可证（带存储）