Polymers
·
2025
·Vol. 17
·期 5
·679
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IF 4.9
Gege Bao,Lu He,Xiaofeng Zhang,Xi Yu,Jingpeng Li,Daochun Qin
Bamboo, recognized as a nutrient-dense biomass material, exhibits a high susceptibility to mold infestations, which can result in discoloration and a notable decrease in longevity, thereby posing potential health risks to humans. In this study, melamine-formaldehyde resin (MFR) was utilized to load 3-iodo-2-propargyl-butyl-carbamate (IPBC) via in situ polymerization, resulting in the preparation of microcapsules suitable for anti-mold protection of bamboo. The mold resistance ofAspergillus niger,Trichoderma viride, andPenicillium citrinumwere evaluated. A scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier-transform infrared spectrometer (FTIR), and thermogravimetric analysis (TG) were used to characterize and analyze the formation process, surface morphology, structural composition, and thermal stability of the microcapsules. The effects of different surfactants (Span 80, Tween 80, SDBS, SDS, GA) on the microscopic morphology of the anti-mold microcapsules were investigated. The results show that microcapsules prepared with Tween 80 as the surfactant exhibited good mold resistance. After coating MFR with IPBC, the drug loading of I-MFR is 20%, with an encapsulation efficiency of 80%, demonstrating excellent anti-mold performance. The microcapsules show favorable anti-mold performance and have broad application prospects in bamboo protection.
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
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IF 12.2
Puyue Liu,Yiming Dong,Xiaoxuan Li,Yu Zhang,Zhi Liu,Yingying Lu,Xuewen Peng,Ruifang Zhai,Yiping Chen
The misuse and overuse of chloramphenicol poses severe threats to food safety and human health. In this work, we developed a magnetic solid-phase extraction (MSPE) pretreatment material coated with a multilayered metal – organic framework (MOF), Fe 3 O 4 @ (ZIF-8) 3 , for the separation and enrichment of chloramphenicol from fish. Furthermore, we designed an artificial-intelligence-enhanced single microsphere immunosensor. The inherent ultra-high porosity of the MOF and the multilayer assembly strategy allowed for efficient chloramphenicol enrichment (4.51 mg/g within 20 min). Notably, Fe 3 O 4 @ (ZIF-8) 3 exhibits a 39.20% increase in adsorption capacity compared to Fe 3 O 4 @ZIF-8. Leveraging the remarkable decoding abilities of artificial intelligence, we achieved the highly sensitive detection of chloramphenicol using a straightforward procedure without the need for specialized equipment, obtaining a notably low detection limit of 46.42 pM. Furthermore, the assay was successfully employed to detect chloramphenicol in fish samples with high accuracy. The developed immunosensor offers a robust point-of-care testing tool for safeguarding food safety and public health.
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International Journal of Electrochemical Science
·
2024
·
IF 1.3
Dandan Liang,Weili Hou,Ying Zhang,Jihua Shang,Haibo Ren,Yufeng Sun
Due to the prevailing energy shortages, the pursuit of new alternative energy sources is becoming increasingly urgent. Hydrogen production through water electrolysis has emerged as a crucial method. However, the sluggish four-electron reaction in the oxygen evolution reaction (OER) remains the primary rate-limiting step. In this study, we synthesized a heterostructure La(OH) 3 @CuO-P material on the nickel foam (NF) substrate. The experimental results demonstrate that after phosphating treatment, the heterostructure La(OH) 3 @CuO-P exhibits exceptional catalytic performance with only 215 mV overpotential, a Tafel slope value of 79.36 mV/dec, and a bilayer capacitance of 39.02 mF/cm 2 at a current density of 10 mA/cm 2 for OER in a 1 M KOH solution. These values are significantly superior compared to those obtained using heterostructure La(OH) 3 @CuO alone which showed an overpotential value of 365 mV at a current density of 10 mA/cm 2 . Moreover, during cyclic voltammetry testing for up to 500 cycles, La(OH) 3 @CuO-P also demonstrates relatively stable performance. Analyses suggest that composite heterostructure effectively addresses issues such as insufficient conductivity of La(OH) 3 and monomer aggregation tendency for CuO while maintaining excellent properties for each component. By incorporating P atoms as dopants, the interaction between La, Cu, and P atoms not only facilitates fine-tuning of the electronic structure and optimization of the adsorption free energy (-OH), but also promotes an increase in catalytic active sites through sample size reduction, thereby further augmenting the performance of the OER.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Qianqian Zhao,Haiqi Jia,Wenxiong Shi,Shaolu Li,Xiaohui Yi,Siqi Yin,Genghao Gong,Yunxia Hu
Aromatic polyamide (PA) reverse osmosis (RO) membrane has gained widespread usage in desalination and water production. Nevertheless, their surfaces are prone to fouling during practical applications stemming from their inherent physicochemical properties. Therefore, conducting research on enhancing the antifouling properties of PA membranes through surface modification is of significant importance. In this work, high-flux and superior antifouling RO membranes were fabricated via surface grafting and self-crossing of [3-(2-aminoethyl) aminopropyl] triethoxysilane (AEAPTES) on the pristine PA membrane surface. Benefiting from solvent activation by n-hexane/n-decane and the strong hydrophilicity of AEAPTES, the modified membranes showed a significant enhancement in water permeance by approximately 73 % (reaching up to 4.10 LMH/bar) compared to unmodified PA membrane, while maintaining NaCl rejection above 98.67 %. Additionally, the modified membrane exhibited outstanding stability. Dynamic fouling experiments with charged model foulants of varying molecular sizes, supported by molecular dynamics simulation analysis, demonstrated that the surface charge plays a crucial role in resisting small-molecule foulants, while hydrophilicity is more effective against macromolecule foulants. Although AEAPTES incorporation did not improve the antifouling performance to negatively charged sodium dodecyl sulfate (SDS), it significantly improved resistance to positively charged dodecyl trimethyl ammonium bromide (DTAB) and charged protein model foulants, including lysozyme (LYZ) and bovine serum albumin (BSA). These improvements are attributed to the creation of a thick hydration layer, as well as the electrostatic interactions and steric hindrance effects provided by the AEAPTES modified layer. This research offers new perspectives on the antifouling mechanisms of PA membranes modified by organoalkoxysilane molecules.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xiyue Zhang,Minjie Hou,Jianyong Zhang,Yingjie Zhou,Fupeng Li,Kun Ren,Xuantian Feng,Pengyu Dou,Sicheng Bi,Katsuro Hayashi,Lin Xu,Feng Liang
Alluaudite-type Na 2+2δ Fe 2- δ (SO 4 ) 3 , characterized by its cost-effectiveness and high operating voltage, has emerged as a prospective cathode material for sodium-ion batteries (SIBs). However, poor electronic conductivity and sluggish reaction kinetics hinder its practical application. In this study, we developed a low-strain spherical Na 2.5 Fe 1.75 (SO 4 ) 3 @C@KB (NFS@C@KB) cathode, enclosed within highly conductive Ketjen Black (KB) using a scalable spray-drying method. In-situ X-ray diffraction analysis revealed that the nearly zero-volume strain originates from the synergistic effect of the dense spherical configuration and pearl-like KB branched chains, effectively enhancing the structural stability and prolonging the cycle life. Moreover, the interconnected KB network establishes a continuous electron transport pathway, thereby improving the electronic conductivity. The optimized NFS@C@KB cathode delivered a capacity of 75 mAh g −1 at 5C and exhibited remarkable cycling stability over 4000 cycles. Even under the extreme condition of −20 °C, it retained a discharge capacity of 63 mAh g −1 at a rate of 1C. Consequently, the combination of a low-strain structure and outstanding electrochemical performance is expected to stimulate further exploration of iron-based sulfate cathodes and promote the development of rechargeable SIBs for energy storage applications.
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JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Xiuna Tian,Hongjian Dou,Youfeng Wen,Lingyuan Wu,Changjun Wang,Zongwei Zhang,Youzi Zhang
In the field of disease diagnosis and treatment, achieving highly sensitive temperature sensing via non-contact methods based on fluorescence continues to present a significant challenge. This study investigated the influence of the cross-relaxation (CR) process of Tm 3+ ions at varying concentrations and the negative thermal expansion (NTE) property of the matrix on the luminescent properties of Sc 2 (MoO 4 ) 3 :Yb 3+ /Tm 3+ materials under diverse temperature conditions, and further evaluated their potential application value in the field of temperature sensing. At room temperature, the analysis of the concentration dependence of the emission spectra reveals that the intensities of the emission peaks originating from higher energy levels ( 1 G 4 , 3 H 4 , and 3 H 5 ) and the lowest excited state ( 3 F 4 ) exhibit significant variation with the doping concentration. As the doping concentration increases, the temperature enhancement factor for the fluorescence intensity of high-energy level transition ( 1 G 4 → 3 H 6 ) progressively decreases from 21.6 to 1.2. In contrast, the temperature enhancement factor for the lowest excited state transition ( 3 F 4 → 3 H 6 ) markedly increases from 471 to 2964. At a concentration of 8%, the temperature extension factor of the fluorescence lifetime at 1627 nm ( 3 F 4 → 3 H 6 ) can reach 7.2, whereas at a concentration of 0.5%, this factor is 2.7. These suggests that the CR process between Tm 3+ ions exerts markedly distinct influences on the luminescence intensities and lifetime in Sc 2 (MoO 4 ) 3 :Yb 3+ /Tm 3+ materials. In addition, this study employs the fluorescence intensity ratio of I 1629 nm / I 1197 nm for temperature sensing, thereby achieving high sensitivity in temperature measurement.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Dongsheng Jiang,Yuzhe Li,Chao Zhang,Ruifang Wang,Jinpeng Zhu,Wen Chen,Yusi Che,Jilin He
Bayan Obo tailings are rich in niobium and other valuable elements; however, the phase evolution of niobium-bearing slag within these tailings remains poorly understood. This knowledge gap significantly impedes comprehensive utilization of these strategic resources. In this study, a CaO-SiO 2 -Nb 2 O 5 -5%Na 2 O-5%Al 2 O 3 -3%CaF 2 slag system was investigated to examine the phase equilibrium types, compositional characteristics, and distributional evolution under varying w (CaO)/ w (SiO 2 ) ratios and w (Nb 2 O 5 ) contents, using high-temperature equilibrium experiments. Following a 24-hour high-temperature equilibrium treatment at 1473 K under an argon atmosphere, a range of compounds including 13CaO·8SiO 2 ·Nb 2 O 5 ·CaF 2 , 2CaO·4SiO 2 ·Na 2 O·Al 2 O 3 , CaO·Nb 2 O 5 ·NaF, 2CaO·Nb 2 O 5 , and CaO·SiO 2 were identified. An increase in Nb 2 O 5 content coupled with a reduction in the w (CaO)/ w (SiO 2 ) ratio favored the formation of CaO·Nb 2 O 5 ·NaF (pyrochlore phase) and 2CaO·Nb 2 O 5 . These two phases exhibited high Nb concentrations, with the CaO·Nb 2 O 5 ·NaF (pyrochlore) phase containing up to approximately 70% Nb. The optimal smelting conditions for niobium enrichment in the pyrochlore phase were identified within the range of w (CaO)/ w (SiO 2 ) = 0.74∼0.80 and w (Nb 2 O 5 ) = 13.61%∼16.11%.
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TALANTA
·
2025
·
IF 6.1
Tingting Wang,Xinhua Zhao,Zhenxu Li,Yi Zhang,Zhu Zhang,Dachi Yang
The newly-emerged gas sensing detection of 1-octen-3-ol biomarker is expected to indirectly monitor foodborne illnesses caused by Salmonella-contaminated meat, which requires high selectivity and a ppb-concentration detection limit. Here, surface-doped ruthenium over tungsten oxide nanocubes (Ru/WO 3 NCBs) have been synthesized by a wet-chemical approach for highly selective and ppb-concentration 1-octen-3-ol sensing. As-prepared Ru/WO 3 NCBs exhibit a polycrystalline structure and consist of NCBs that have an average side length of ∼131 nm, and the Ru/WO 3 NCBs show a high sensing response toward 5 ppm 1-octen-3-ol (R a /R g = 406), excellent selectivity, 50 ppb detection limit, 70% relative humidity tolerance, and 54 days stability at 220 o C. The excellent sensing performance might be attributed to the electronic and chemical sensitization of Ru, which thickens the electron depletion layer and increases adsorbed oxygen to promote interfacial electron transfer and 1-octen-3-ol oxidation. Practically, Ru/WO 3 NCBs have been integrated into a sensing device to simulate detecting 1-octen-3-ol, which has the potential for Salmonella detection in the future.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xianchang Ning,Yuting Wu,Yusheng Xu,Zhenbeina Deng,Tianyu Guo,Minghui Su,Dacheng Zhou,Qi Wang,Jianbei Qiu
Multimodal temperature sensing minimizes environmental interference through cross-validation by integrating both upconversion (UC) and downconversion (DC) modalities and exploiting differences in the thermal responses of emissive transitions in a single activator center. Er 3+ -doped Gd 2 (WO 4 ) 3 phosphors were synthesized via a high-temperature solid-state reaction. This material nables multimodal self-calibrating temperature sensing based on both DC and UC luminescence and exhibits excellent resistance to thermal quenching. Notably, under 360 nm excitation (DC mode), the 530 nm emission maintained 96% of its intensity from 313 to 493 K, and under 980 nm excitation (UC mode) it remained within ±5% from 313 to 573 K. Additionally, the 824 nm emission (under 980 nm excitation) exhibited a 3.37-fold enhancement from 313 to 573 K, attributed to thermally activated cross-relaxation (CR). We also explored a multimodal self-calibrating temperature sensing system using fluorescence intensity ratio (FIR) techniques, employing the I 530 /I 551 ratio in the DC mode and the I 824 /I 551 ratio in the UC mode. Notably, the I 824 /I 551 ratio achieved a maximum relative sensitivity (S r ) of 2.21% K -1 at 313 K. A dual-mode temperature fusion platform was developed by integrating DC and UC channels. In this scheme, the multimodal FIR strategy synergistically minimizes systematic errors through cross-validation while enhancing reliability by combining thermal-quenching resistance and thermally activated emission. This work establishes a novel dual-mode material system framework for high-accuracy optical thermometry.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Bin Gu,Xianyan Zeng,Ming Gong,Xiangyu Li,Qian Yu,Zhengzong Tan,Zheqi Lou,Tinghui Jiang,Yu Che,Yiran Ao,Yong Zhu
Glioblastoma multiforme (GBM) is the most aggressive and common adult brain tumor. Current therapies primarily involve surgical resection, followed by chemotherapy and radiotherapy. However, the low survival rate due to high toxicity, side effects, and poor targeting necessitates novel treatments. Post-transcriptional regulation pathways, particularly the regulation of alternative polyadenylation based on the mRNA 3′UTR, play a critical role in cell growth and development and the progression of tumors. Targeting tumor cells and reprogramming the 3′UTR of tumor suppressor genes to achieve post-transcriptional regulation is expected to be a new channel for GBM therapy. Herein, a novel siRNA delivery system is developed based on mesoporous silica nanoparticles: siRNA composite nanoparticles (siRNA CNP). Encapsulation in MSNs overcomes siRNA degradation and cellular entry issues, while lipid bilayer coating improves biocompatibility and stability. Surface-modified nucleic acid aptamer SL1 (Apt-SL1) significantly enhances GBM targeting, offering therapeutic potential. The findings show that siRNA CNP effectively silences the promoter CFIm25 of distal poly(A) in tumor cells, inducing gene reprogramming, inhibiting tumor growth, and promoting apoptosis in nude mice. The siRNA CNP demonstrates a significant effect in reprogramming tumor suppressor genes and treating GBM. It offers a novel and promising therapeutic avenue for GBM.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Ang Gao,Yong Li,Yinjing He,Can Zheng,Lidan Liu,Zhike Liu,Dapeng Wang,Shengzhong Frank Liu
The quality of organic–inorganic hybrid perovskite films directly affects the application prospect of perovskite solar cells (PSCs), where organic and inorganic cations are the core elements that affect the quality of the perovskite. The additive strategy has been widely used to passivate cation-related defects in perovskite films. Here, the perovskite precursor solution introduced 5-bromopyridine-3-sulfonic acid (BOH) with a potential all-cation passivation function. The experimental results verified that the N atom on pyridine in the BOH molecular structure passivated the defects in perovskite by binding with undercoordination Pb2+, and the sulfonic acid group inhibited nonradiative recombination through their interactions with FA+ and Pb2+, improving perovskite grain size and crystallinity, and enhancing film quality. Thanks to the all-cationic targeted anchoring effect of BOH, the efficiency of the BOH-treated device upgraded from 22.32 to 24.33%. Importantly, PSCs with BOH showed excellent stability after exposure to 25% humidity for 1200 h at room temperature.
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International Journal of Nanomedicine
·
2024
·
IF 6.6
Yi Liang,Liping Feng,Yue Zheng,Yunzhen Gao,Rongying Shi,Zhirong Zhang,Xue Ying,Yingchun Zeng
Introduction Parkinson’s disease (PD) is a multifactor-induced neurodegenerative disease with high incidence in the elderly population. We found for the first time that the combination of dopamine (DA) and 3-n-butylphthalide (NBP) has great potential for the synergistic treatment of PD. To further improve the therapeutic performance of the drugs, a brain-targeting liposomal co-delivery system encapsulating NBP and DA ((NBP+DA)-Lips-RVG29) was designed using a rabies virus polypeptide with 29 amino acids (RVG29) as the targeting ligand.Methods The synergistic neuroprotective effects of NBP and DA were assessed in 6-OHDA-induced PC12 cells. Then, (NBP+DA)-Lips-RVG29 loading with NBP and DA at an optimal ratio was prepared using the thin-film hydration and sonication method. The physicochemical and biological characterization of (NBP+DA)-Lips-RVG29 were systemically investigated, and the therapeutic efficiency and underlying mechanisms of (NBP+DA)-Lips-RVG29 were also explored in vitro and in vivo. Finally, the safety of (NBP+DA)-Lips-RVG29 was evaluated.Results The synergistic effects of NBP and DA peaked at 1:1 (NBP/DA, mol/mol). The functionalized liposomes showed significantly higher uptake efficiency and blood-brain barrier (BBB) penetration efficiency in vitro. After systemic administration, (NBP+DA)-Lips-RVG29 prolonged the blood circulation of drugs, enhanced BBB penetration and increased drug accumulation in the striatum, substantia nigra and hippocampus. Moreover, (NBP+DA)-Lips-RVG29 showed excellent neuroprotective effects in a cellular PD model of PC12 cells and improved therapeutic efficacy in a PD mouse model. Furthermore, the safety evaluation of (NBP+DA)-Lips-RVG29 revealed no systemic toxicity.Conclusion NBP and DA exhibited the synergistic anti-PD effects. The RVG29-modified liposomes encapsulating NBP and DA contributed to the accumulation of drugs in the brain lesions area of PD and further improved treatment efficacy. Therefore, (NBP+DA)-Lips-RVG29 represents a promising strategy for the treatment of PD and other neurodegenerative diseases.
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