Gels
·
2025
·Vol. 11
·期 11
·852
·
IF 5.3
Minglin Wang,Ye Li,Kun Yang,Rui Liu,Mengqi Wang,Kongyin Zhao
The rapid development of industry has led to the discharge of large quantities of organic pollutants into water bodies, posing a significant threat to aquatic safety. It is imperative to develop efficient and environmentally friendly methods for the elimination of organic pollutants. The integration of hydrogel membranes with advanced oxidation processes (AOPs) for water purification has attracted considerable interest due to their high efficiency. However, conventional wet membrane materials stored in aqueous environments are more prone to swelling and leakage of loaded metal species. This limits its application in the degradation of organic pollutants. This study employs a vacuum drying strategy for wet hydrogels, incorporating molybdenum disulfide as a cocatalyst and Co2+cross-linking within the alginate matrix, resulting in a dried MoS2–cobalt alginate hydrogel membrane (D-MoS2-CoAlg). The drying process of the D-MoS2-CoAlg membrane not only significantly enhanced its mechanical strength and anti-swelling capacity but also effectively mitigated the leaching of Co2+. Throughout five consecutive cycles, the concentration of leached Co2+remained below 0.032 mg/L. This enables the membrane to achieve a balance between reusability and environmental compatibility. Under the conditions of a drying time of 60 min, a peroxymonosulfate (PMS) dosage of 0.2 mmol/L, and an initial methylisothiazolinone (MIT) concentration of 20 mg/L, the D-MoS2-CoAlg membrane exhibited exceptional catalytic performance, achieving a degradation rate of MIT as high as 92.14% within 5 min. The D-MoS2-CoAlg membrane demonstrates high catalytic activity and good stability, showing promising potential for application in the field of organic wastewater treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Energy Research
·
2025
·
IF 2.4
Tianjiao Huang,Wu Xia,Fnu Joshua,Vaishnavii Subbiah Ponnusamy,Qipeng Zhang,Sachin Kumar,Ao Yu
Rational interfacial engineering is crucial to designing non-precious electrocatalysts for the hydrogen evolution reaction (HER). Here we report a Cu3N/1T-MoS2 heterojunction in which ultrathin 1T-MoS2 nanosheets are conformally grown on conductive p-type Cu3N nanocubes. Spectroscopy and microscopy reveal intimate lattice contact and interfacial strain, while XPS indicates charge redistribution across the junction. In 0.5 M H2SO4, the optimized 1:1 composite delivers an overpotential of 387 mV at 50 mA cm−2 and a Tafel slope of 57 mV dec−1, outperforming both constituents (MoS2 ≈ 456 mV; Cu3N inactive at this current density). Continuous operation for 150 h demonstrates excellent acid stability. Electrochemical impedance and double-layer capacitance analyses show the lowest charge-transfer resistance and the highest electrochemically active surface area among all samples (Cdl = 103.6 mF cm−2), corroborating rapid electron transport and abundant accessible sites. The activity enhancement arises from a p–n heterojunction with a built-in field that promotes directional electron flow to MoS2 active edges, together with strain-induced defect exposure. This work identifies Cu3N as an effective platform to stabilize conductive MoS2 and provides design rules for interface-engineered HER catalysts.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 21
·4188
·
IF 4.6
Chunhua Zhu,Jie Yao,Meng Du,Henghui Xu,Jintao Yu,Haotian Zhu,Zeyu Zhou,Jubing Zhang
As a conceptual study for low-energy hydrogen production, potentially coupled with off-grid photovoltaics, this work focuses on overcoming the constraint of the oxygen evolution reaction (OER), which features a high anode potential and significant overpotential. To reduce energy consumption, the Fe2+oxidation reaction is employed to replace OER, coupled with Fe2+regeneration using natural biomass. Experimental results reveal that Fe2+oxidation reaction is an effective substitute, with an initial oxidation potential of 0.5 V (vs. Hg/Hg2SO4), much lower than that of OER. Fe2+regeneration is notably influenced by both biomass type and reaction temperature. Chlorella pyrenoidosa (CP) achieves the highest Fe3+reduction rate of 90.5% at 190 °C. Water-soluble organic compounds generated during biomass oxidation exert a negative impact on Fe2+electrooxidation by accumulating on or coating the electrode surface, and the compounds derived from CP exert a less detrimental effect. Moreover, enhancing magnetic stirring, elevating temperature, and selecting an appropriate anode material can significantly boost the oxidation reaction. Under optimized conditions, the current density during electrolysis of CP filtrate at 1.1 V reaches 280 mA/cm2, much higher than values reported in similar studies. This highlights the great potential of this co-electrolysis approach for efficient hydrogen production driven by off-grid photovoltaic power.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Minerals
·
2025
·Vol. 15
·期 11
·1123
·
IF 2.2
Weiming Jiang,Xiao Wu,Hongmei Yang,Juan Fu,Qirui Zeng,Sizhe Li,Ruiyao Luo,Yiping Yang,Xiaoju Lin,Jianxi Zhu
Late-Archean seawater functioned as a vast, redox-tuned colloidal system for which its kinetics were largely governed by the surface chemistry of silica–iron nanoparticles. By reproducing Archean seawater (≈0.7 M ionic strength, 25 °C) in laboratory anoxic-to-mildly oxic reactors, the ζ potential (zeta-potential(ζ)) of silica–iron nanoparticles was investigated, and we tracked how transient O2pulses (≤9 mg L−1) regulated it. The zeta (ζ) potential was applied as the key diagnostic parameter to quantify both the sign of the ζ potential and the colloidal stability of simulated silica–iron particles in dispersion. Under strictly anoxic conditions, silica colloids (SiO2(aq)) exhibit a persistently negative ζ potential (ζ ≈ −25 mV) in the simulated seawater (pH 6.5), arising from deprotonated silanol groups (≡Si–O−). Upon the addition of Fe2+, the inner-sphere complexation of ferrous ions on SiO2colloids partially replaces ≡Si–O−with ≡Si–O–Fe+/≡Si–O–Fe–OH sites; the net negative charge density at the outer Stern plane nevertheless increases, and the ζ potential shifts from −25 mV to −30 mV. As the simulated seawater was oxygenated, the dissolved and surface-bound Fe2+ions were oxidized to Fe3+, causing the ζ potential to exceed −30 mV. This study demonstrates that Fe2+–silica interactions generate electrostatic destabilization, suspending micron-scale aggregates and thus modulating the solubility and speciation of SiO2in early oceans. Also, transient micro-oxic pulses are shown to shift silica–iron colloids between metastable aggregation and dispersion by modulating their ζ potential. Subsequently, AFM and TEM were used to characterize the morphological changes in the colloidal particles from the liquid state to the dry state. Furthermore, infrared and XPS analyses were conducted on the colloidal samples. These findings provide certain reference significance for reconstructing the chemical evolution process of seawater in the Late-Archean period and for understanding the factors influencing the silicon–iron cycle of seawater in the Late-Archean era.
✓ 已验证
DOI
高影响因子
QUIMICA NOVA
·
2025
·
IF 0.7
Zhang Shuo,Yang Yuanrong,Meng Kun,Zhu Xinyong,Huang Longjiang,Sui Lina,Yu Liyan
To detect melamine in packaging materials, terahertz time-domain spectroscopy (THz-TDS) was employed to measure the terahertz absorption spectra of melamine-polyethylene mixtures with varying mass ratios (1:0-3). The results revealed distinct characteristic absorption peaks of melamine at 2.0, 2.28, and 2.6 THz. Among these, the peak at 2.0 THz was the most prominent and remained clearly observable even within packaging materials. Several common packaging materials, including low-density polyethylene (LDPE), high-density polyethylene (HDPE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), polyethylene terephthalate (PET), and paperboard, were examined individually to assess their spectral interference. Characteristic melamine absorption peaks at 2.0 and 2.28 THz were used to establish a calibration model based on Gaussian distribution functions. Based on the International Union of Pure and Applied Chemistry (IUPAC) method, the limit of detection (LOD) and limit of quantification (LOQ) were calculated to be 15 and 80%, respectively. Even at a concentration close to the LOD (10%), the signal remained distinguishable (signal/noise (S/N) > 3). X-ray powder diffraction (XRD) was utilized as a complementary technique to confirm the presence of melamine in the transparent plastic zip bag. These results support the effectiveness of THz-TDS in detecting melamine through packaging materials and highlight its potential application for detecting specific molecules in packaging materials.
✓ 已验证
产品关联
DOI
高影响因子
Materia-Rio de Janeiro
·
2025
·
IF 1.2
Zhao Zhenjiang,Guo Pingan,Bian Yi,Zhao Xue,Yang Mingxu,Wei Xiaoda,Lv Rui Ling,Yi Wenkang,Zhou Wenlong
To improve the interfacial bonding properties of carbon fiber-reinforced polymer (CFRP) composites, this study proposes an effective surface modification strategy for carbon fibers. A CF-KH560-PGO hybrid reinforcement was fabricated through chemical grafting, employing γ-glycidoxypropyltrimethoxysilane (KH560) as a coupling agent to bridge the carbon fibers (CF) with polyethyleneimine (PEI)-functionalized graphene oxide (GO). The presence of lamellar PGO has been observed on the surface of modified carbon fibers. The presence of the –NH2 peak, in conjunction with the C–N peak, on the surface of the carbon fibers, served to verify the grafting of PGO. The synergistic effect of PGO and KH560 significantly enhanced the surface wettability of carbon fibers. This study systematically investigates the mechanical performance of composites fabricated through different CF modification approaches, along with the underlying interfacial reinforcement mechanisms. The modified carbon fiber composites exhibited remarkable tensile strength (669.7 MPa) and interlaminar shear strength (60.41 MPa), representing 49.89% and 20.36% improvements respectively over desized carbon fiber composites. Grafted PGO can provide abundant amino groups for chemical bonding with epoxy resins. That KH560 and PGO increased the thickness of the interfacial transition layer, thereby enhancing the load transfer at the composite interface.
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Veterinary Science
·
2025
·
IF 2.9
Chen Fan,Changzheng Chen,Renping Liu,Muredili Maimaiti,Changgeng Li,Weijie Zao,Waike Lv,Guozhu Xu,Guodong Zhao
Background To investigate the impact of L -arginine ( L -Arg) and L -citrulline ( L -Cit) on cow reproductive performance. Methods 90 healthy, age-matched Simmental cows were randomly assigned to three groups: control, L -Arg, and L -Cit, with 30 cows per group. Estrus synchronization was performed, and various parameters were assessed, including estrus rate, conception rate, and early embryo apoptosis, following intraperitoneal administration of L -Arg and L -Cit. Additionally, reproductive hormones, serum antioxidant levels, and plasma metabolites were measured. Results Results indicated that both the estrus and conception rates in the L -Arg and L -Cit groups were significantly higher than those in the control group ( p < 0.05). Furthermore, serum LH levels and VEGF concentrations on day 1 and day 8 were elevated in the L -Arg and L -Cit groups compared to controls ( p < 0.05). Estrus rate and serum NO concentration in the L -Cit group were notably higher than those in the control group ( p < 0.05). At day 8 and day 21, estrus rate, conception rate, P levels, and serum VEGF concentrations were significantly greater in both the L -Arg and L -Cit groups compared to controls ( p < 0.05). Additionally, serum NO concentration was significantly higher in the L -Cit group than in the control group ( p < 0.05). The activities of T-AOC and GSH-Px in serum were significantly increased in both primiparous and multiparous cows in the L -Arg and L -Cit groups relative to the control group ( p < 0.05). Metabolomic analysis revealed that in primiparous cows, the protein digestion and absorption, ABC transporters, and AMPK signaling pathways were significantly enriched. In multiparous cows, pyrimidine metabolism was notably enriched. Conclusion Under the experimental conditions, L-Arg modulated the production of Dimethyl sulfone, 1,5-pentanediamine, Bassanolide, and Phenylalanine in primiparous cows through the protein digestion and absorption and ABC transporters pathways, while L -Cit influenced the same metabolites via the ABC transporters pathway. Both L -Arg and L -Cit promoted increased NO, GSH-Px, T-AOC, and VEGF levels, enhancing early embryo implantation. Additionally, L -Arg and L -Cit synergistically influenced pyrimidine metabolism, regulating the production of N-myristoylphosphorylcholine, N-oleoyl-d-erythro-sphingosylphosphorylcholine, 1-stearoyl-2-docosahexaenoyl-sn-glycero-3-phosphocholine, and 1-docosahexaenoyl- 2-stearoyl-sn-glycero-3-phosphocholine. This modulation resulted in increased NO, GSH-Px, T-AOC, and VEGF in multiparous cows, ultimately supporting early embryo implantation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Hongshan Jia,Xinyue Duan,Jie Liu,Fei Zhu,Yinlong Li,Jing Yang,Yuxing Han,Yingqing Zhan
The practical application of hydrogel-based polymer membranes in separating emulsified oily wastewater is hindered by their dynamic interfacial instability and insufficient inherent self-cleaning capacity. Herein, the polyvinyl alcohol-tannic acid (PVA-TA) hydrogel decorated polyacrylonitrile (PAN) nanofiber composite membrane with super-wetting and photothermal-catalytic self-cleaning features was constructed via hydrogen bond crosslinking and nano-reinforcement of thorn ball-like Bi 19 Br 3 S 27 -PDA-Bi 4 O 5 Br 2 core@double-shell nanohybrid (BB@PAN). The oil repellence test, density functional theory calculation, and molecular dynamics simulation verified the super-wettable and ultra-low oil adhesion behavior of BB@PAN composite membrane, resulting in highly efficient separation of oil-in-water emulsions (Flux: 1943–2626 L m −2 h −1 , oil rejection rate: 99.19–99.57 %). Owing to the nano-enhancement and multiple hydrogen bonds, the BB@PAN membrane retained its structural integrity and separation stability under extreme conditions. The broad-spectrum response and high light absorption efficiency of 3D core@double-shell structure (BOB-PDA-BBS) endowed the membrane with efficient photothermal conversion (temperature reached 62.56 °C within 24 min), enabling rapid volatilization of adhered light oils and effectively preventing a decline in permeation flux. With the support of PDA-mediated electron transfer bridge, the BB@PAN composite membrane achieved outstanding photocatalytic self-cleaning efficiency, as evidenced by its high degradation rate for various dyes. Therefore, the photothermal-catalytic double-mode self-cleaning mechanism tremendously addresses the complicated membrane fouling issues caused by oils and organic pollutants.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Alexandria Engineering Journal
·
2025
·
IF 6.8
Yingming Mu,Haiya Zhang,Tao Ya,Liang Duan
Electrospun nanofiber membranes incorporating ZnO and Ag nanoparticles were developed using a coaxial electrospinning technique to address microbial contamination in urban water bodies. Polycaprolactone (PCL) served as the polymer matrix, and five formulations (S0–S4) with increasing nanoparticle concentrations were synthesized. Morphological analyses revealed uniform fiber formation with optimal distribution of ZnO and Ag at moderate loadings. S3 (3 wt% ZnO, 0.3 wt% AgNO₃) exhibited a mean fiber diameter of 487 nm, pore size of 2.0 µm, and porosity of 82.8 %. ATR-FTIR and XRD analyses confirmed the presence and dispersion of the incorporated nanoparticles without altering PCL’s structural integrity. Wettability improved significantly, with water contact angle decreasing from 114.3° (S0) to 93.4° (S4). Mechanical testing showed that S3 retained tensile strength (4.3 MPa) and ductility (180 % elongation). Antibacterial assays demonstrated a peak inhibition zone of 11.2 mm against Staphylococcus aureus and 10.4 mm against Escherichia coli . Filtration trials using simulated urban wastewater revealed that S3 achieved a log reduction value of 4.4 (corresponding to 99.996 % bacterial removal), reduced turbidity by 91.8 %, and lowered conductivity by 12.3 %. Despite reduced flux with increasing nanoparticle content, S3 maintained a satisfactory water flux of 112.6 L/m 2 ·h. These multifunctional membranes offer a promising route for enhancing microbial safety and improving physical water quality without the drawbacks of traditional disinfection. This study provides insights into nanoparticle–polymer interactions and offers design guidelines for practical, high-performance water purification systems in urban environments.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Haobo Liu,Liangtai Wang,Tongjie Qiao,Fengshuo Xi,Shaoyuan Li,Xiufeng Li,Xiuhua Chen,Jijun Lu,Zhongqiu Tong,Kuixian Wei,Wenhui Ma
In this study, we utilized the intrinsic small particle size and crystalline structure of silica tailings to synthesize NiSi 2 /SiNWs composites via a NiO-catalyzed, energy-efficient, and environmentally friendly molten salt electrochemical method. Metallic silicide droplets exhibited in-situ formation and dynamic migration. This dual-process mechanism simultaneously guided silicon nanowire growth and established conductive networks. The NiSi 2 /SiNWs electrode demonstrated enhanced crack resistance and optimized diffusion kinetics, achieving an initial Coulombic efficiency of 90.7 %. It maintained a reversible capacity of 500.6 mAh g −1 after 350 cycles. Rate capability tests showed that its capacity rapidly recovered to 86 % of its initial value. In addition, Galvanostatic intermittent titration technique (GITT) was employed to evaluate the enhanced Li + transport kinetics and electrochemical reactivity of NiSi 2 /SiNWs composites. This work presents an energy-efficient approach for engineering silicon-based anodes, simultaneously achieving sustainable silica tailings upcycling and establishing a cost-effective silicon sourcing paradigm with dual environmental and technological benefits.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Shengrui Cui,Fangfang Dong,Chengliang Lin,Mingxu Duan,Mengqiu Li,Ayaulym Belgibayeva,Abdul Majid,Yongcheng Jin
High-voltage LiNi 0.5 Mn 1.5 O 4 (LNMO) spinel cathodes offer high energy density and cost efficiency for next-generation lithium-ion batteries but suffer from structural degradation and interfacial side reactions. This study addresses these challenges through a cobalt phthalocyanine (CoPc) modification strategy that synergistically integrates bulk doping and surface coating. By neutralizing residual surface alkali and optimizing calcination processes, Co 3+ ions are selectively doped into Mn 4+ sites to expand lattice parameters, while an in-situ-formed Co 3 O 4 nanocoating chemically passivates the surface, suppressing Mn dissolution and promoting stable CEI formation. The optimized LNMO-5 wt% CoPc (using CoPc content is 5 wt%) cathode demonstrates outstanding electrochemical stability, retaining 81.4 % capacity after 700 cycles at 1C and delivering 95.2 mAh g −1 at 20C over 1000 cycles. It also exhibits superior temperature-adaptability with 68.1 mAh g −1 capacity at 5C/-15 °C and 68.3 % capacity retention at 40 °C after 300 cycles at 1C. This work establishes a “bulk-surface” co-optimized framework to resolve the inherent stability-rate trade-off in spinel cathodes, advancing the development of long-term high-power lithium-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2025
·Vol. 14
·期 21
·3748
·
IF 5.1
Miao Wang,Xijuan Zhao,Zhihao Lin,Hailong Yu,Yanyan Huang,Bining Jiao,Jie Zhou,Ge Chen,Guangyang Liu,Lin Qin,Xinyan Liu,Donghui Xu
The quality and safety of agricultural products are important factors in safeguarding human health and promoting sustainable agricultural development. However, for the purpose of improving the yield and quality, the misuse of pesticides often occurs, causing pesticide residues to remain in vegetables, posing threats to both the environment and human health. In order to detect and adsorb pesticide residues in vegetables, a coral-like novel magnetic porous nanomaterial (Fe@MDZ) was developed in this study as an adsorbent to adsorb thiabendazole (TBZ). Fe@MDZ has a large specific surface area (229.254 m2/g) and high saturation magnetization intensity (57.38 emu/g) with good adsorption capacity for TBZ. When the initial concentration was 2 mg/L, the adsorption capacity for TBZ was 1.23 mg/g. The static adsorption process matched the Langmuir isotherm model and was consistent with the pseudo-second-order kinetic model. In addition, the recovery of TBZ in both tomato and Chinese cabbage samples at different concentrations was above 70%. This work provides a new idea for the detection of TBZ pesticide residues in vegetables.
✓ 已验证
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）