JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.7
Fei Xu,Yingqi Gao,Xiaoxiao Zhou,Jing Cui,Ruozheng Wei,Tao Peng
The treatment of pancreatic cancer has long been a global challenge. Strategies based on mitochondrial Ca 2+ overload-related ferroptosis have garnered significant attention. However, the various limitations of current Ca 2+ generators make it difficult to maintain an effective concentration of Ca 2+ overload. In this study, we developed a nanocomposite material, CaO 2 @Fe( SS )-MOF@Ce6@PAA (CFMCP), by encapsulating CaO 2 nanoparticles (NPs) and the photosensitizer Chlorin e6 (Ce6) within a metal-organic framework (MOF) and further modifying it with polyacrylic acid (PAA). This nanocomposite effectively depletes glutathione (GSH) in tumor tissues, thereby enhancing the efficacy of photodynamic therapy (PDT) and chemodynamic therapy (CDT). Upon co-incubation of CFMCP NPs with SW1990 pancreatic cancer cells, we observed efficient cellular uptake of the nanomaterials. Under the influence of CFMCP NPs, cellular GSH and glutathione peroxidase 4 (GPX4) levels decreased, exacerbating oxidative stress and lipid peroxidation, increasing Fe 2+ content, and aggravating mitochondrial damage. Using the mitochondrial Ca 2+ uptake inhibitor Ruthenium red, we further confirmed that Ca 2+ overload is a critical mechanism by which CFMCP NPs induce ferroptosis in SW1990 cells. In vivo studies demonstrated that CFMCP NPs exhibit excellent biocompatibility, significantly inhibit tumor growth, and exert direct cytotoxic effects. In summary, the development of this novel composite nanomaterial, which induces ferroptosis through mitochondrial Ca 2+ overload, provides a valuable reference for synergistic and highly effective tumor therapy.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
·
IF 4.6
Yuxuan He,Jiayi Wei,Ming Cai,Junpeng Xia,Boheng Song,Jinxin Cheng,Xuanyu Sha
The performance of surface-enhanced Raman scattering (SERS) hinges on plasmonic hot spots that are both abundant and spatially uniform. Here, we propose a ligand-regulated, interface-confined growth strategy: on a bowl-like mesoporous polydopamine (PDA) scaffold, the ammoniacal silver precursor [Ag(NH 3 ) 2 ] + first forms a surface coordination layer with catechol and amine sites on PDA, lowering the activity of free Ag + and enriching Ag(I) at the interface, thereby shifting nucleation from homogeneous in the bulk to interface-confined. The ensuing constrained growth suppresses coalescence/bridging and excessive coarsening, yielding Ag nanoparticle arrays with controlled size, tunable interparticle gaps, and high spatial uniformity, and producing dense yet discrete coverage across both the inner and outer interfaces of the bowl. The concave curvature and dual-interface connectivity provide continuous coupling pathways and abundant adsorption sites, establishing a three-dimensional continuous hot-spot network. Correlative multi-technique characterization and spectroscopic analyses (SEM, EDS mapping, UV–Vis, XPS) elucidate the structure-optical-performance relationship, revealing a sparse-to-dense optimal regime and a coalescence-induced degradation regime, and identifying a precursor concentration of 50 mM as the optimal window. The resulting substrate exhibits good reproducibility for R6G (RSD ≈ 10.99 %) and affords clear molecular fingerprinting and linear quantification for pesticide analysis, with limits of detection of 55 ng mL −1 for methyl parathion and 0.209 ng mL −1 for thiram. This template-free, mild, and generalizable strategy provides a scalable route to three-dimensional plasmonic SERS substrates, leveraging PDA surface chemistry to prevent Ag aggregation at the source while constructing continuous hot spots networks.
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APPLIED THERMAL ENGINEERING
·
2026
·
IF 6.9
Tianen Chen,Yue Liu,Zifei Fang,Tao Shen,Yuanhao Wang,Shifeng Wang
To address the issue of reduced photovoltaic conversion efficiency and heat waste caused by excessive temperatures under sunlight, this study developed a cooling system (CTW-MPCM) that combines paraffin-based phase-change energy storage microcapsules with waste heat recovery for cooling and thermal energy recovery in photovoltaic panels. The results show that by adjusting the irradiance intensity (400 W/m 2 ~ 800 W/m 2 ) with a solar simulator, the PV panels with the CTW-MPCM system demonstrated an average temperature reduction of 14.6 °C ~ 23.3 °C on the front surface and 24.3 °C ~ 30.6 °C on the back, with a photoelectric conversion efficiency increase of 5.07–13.84 %. At 800 W/m 2 , the thermal recovery efficiency was 82.1 %. The system maintained high cooling performance even under real environmental conditions and the heat transfer process of the system was simulated at both macro and micro scales using finite element analysis. This work combines phase-change energy storage microcapsules with a waste heat recovery system, solving the common leakage problem of traditional phase-change materials and providing a more efficient solution for thermal regulation and waste heat recovery in photovoltaic panels.
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Journal of Materials Chemistry A
·
2026
·
IF 9.5
Junzhou Men,Zeyu Wang,Chen Luo,Ai Zhang,Hui Xian,Tao Jiang,Yating Wang
To address the urgent demand for efficient solar-to-hydrogen conversion, a novel Cu-doped 3D ordered macroporous (3DOM) ZIF-8 photocatalyst was fabricated via polystyrene sphere templating coupled with a dual-solvent method. Systematic characterization confirmed the preservation of the ZIF-8 crystalline structure after ∼2 at% Cu2+ incorporation. The 3DOM framework amplified light absorption via slow-light effects, while Cu2+ doping narrowed the band gap and further intensified the slow-light phenomenon. The optimized Cu-3D-ZIF-325 exhibited a photocatalytic hydrogen evolution rate of 2233.2 µmol g−1 h−1, which is 29 times higher than that of pristine ZIF-8. This performance enhancement originated from synergistic mechanisms: EIS measurements revealed that Cu2+ sites improved charge separation, and the optimized band structure facilitated carrier transport; DFT calculations further verified that Cu2+ optimized the adsorption/dissociation of water and elevated the conduction band potential, strengthening the reductive driving force for H2 production. This work establishes a viable dual-modification strategy for high-efficiency MOF-based photocatalysts.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 21.1
Jinhui Zhang,Jianglin Liu,Dalang Chen,Xiaofei Wang,Dongjie Yang,Xuliang Lin,Xueqing Qiu
The development of efficient and robust bifunctional oxygen electrocatalysts is crucial for advancing rechargeable zinc-air batteries. Although bimetallic composites are promising, conventional doping strategies often lack precise structural control. Herein, we report a sustainable synthesis of Co/Fe heterojunction catalysts from biorefinery lignin, incorporating low-cost Zn as a structural regulator. Zn spacers suppress CoFe alloy crystallization and promote Co 5.47 N formation, while Zn volatilization induces in situ carbon nanotube growth to enhance electronic structure and charge transport. The resulting Zn-CoFe@NLC catalyst exhibited favorable bifunctional performance, with a half-wave potential of 0.84 V for the oxygen reduction reactionand a high kinetic current density (17.2 mA cm -2 at 0.8 V). When implemented in zinc-air batteries, it achieved long cycling stability exceeding 1300 h (at 5 mA cm -2 ) and 1550 h (at 10 mA cm -2 ), more than 2.5 times that of noble metal catalyst (600 h at 10 mA cm -2 ). DFT calculations revealed that the CoFe-Co 5.47 N interface acted as an electron redistribution hub, synergistically enhancing the intrinsic activity of Co/Fe sites. This work underscores the promise of lignin as a sustainable precursor and establishes a generalizable route for rational structural engineering of bimetallic electrocatalysts for energy storage.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Rongkun Zhu,Mengting Cai,Qiuyu Liao,Xiaobin Meng,Hong Yu,Huanghui Zeng,Zhuomiao Lin,Guicui Zhang
In this study, graphene quantum dots (GQDs) with a high density of carboxyl groups were synthesized via a thermal dissolution method. The surface carboxyl groups of the GQDs were then conjugated with the amino groups of dopamine (DA) through an amidation reaction, yielding a novel fluorescent prob.(GQDs@DA), which features catechol groups. Leveraging the distinctive catechol moiety of vancomycin (VAN) as a functional handle, we employed GQDs@DA and a sol-gel process to construct molecularly imprinted polymers (MIPs@GQDs@DA) on a SiO₂ matrix. This resulted in the formation of highly selective recognition cavities complementary to the VAN template molecule in the final MIPs@GQDs@DA probe.When we used excitation light with a wavelength of 360 nm to excite the composite material, MIPs@GQDs@DA emits a stable fluorescence peak at 460 nm. Vancomycin can sensitively and rapidly bind to MIPs@GQDs@DA, thereby quenching the fluorescence generated at 460 nm. Calculations revealed that the quenched fluorescence intensity at 460 nm exhibits a good linear relationship with the concentration of vancomycin, within a linear range of 0–80 μg/mL, and a detection limit of 0.83 μg/mL (S/N = 3). This probe was applied to detect vancomycin in real human serum samples, and the experimental results were consistent with the expected outcomes.
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Small
·
2026
·
IF 12.1
Zhong Xiao,Yijun Gao,Shanshan Song,Fei He,Zhenbo Yang,Yingfan Guo,Zhiliang Liu,Lei Li
Silicon-based materials possess a theoretical specific capacity of 4200 mAh g −1 , making them an ideal anode material for current high-energy-density lithium-ion batteries. However, their significant volume expansion (>300%) and inherently poor electrical conductivity limit their large-scale application. In this study, an innovative synergistic design approach was employed to propose a nickel (Ni)-doped hollow carbon-coated silicon composite material (Ni/HSi@C). This material integrates structural engineering with a carbon layer coating the hollow silicon structure, thereby facilitating volume changes toward internal expansion. Additionally, phase state regulation and interface optimization were integrated, with Ni-doping introduced to promote the formation of amorphous silicon while inducing the formation of a stable solid electrolyte interface film rich in LiF during charge–discharge cycles, thereby achieving synergistic optimization. Experimental results indicate that after 1000 cycles at a current density of 1000 mA g −1 , the specific capacity of Ni/HSi@C remains at 1318 mAh g −1 . Furthermore, the pouch cell achieves an energy density of 379 Wh kg −1 . In situ impedance and distribution of relaxation times analysis demonstrate that Ni-doping significantly reduces interfacial impedance and suppresses electrolyte decomposition.
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Small
·
2026
·
IF 12.1
Jia Liang,Ye Zeng,Hai Huang,Dingrong Deng,Guifang Li,Xiaohong Fan,Mingming Tao,Binbin Wei,Zhengbing Qi,Hanfeng Liang,Qihui Wu
Surface reconstruction of electrocatalysts induces structural evolution, which critically creates favorable conditions for in situ directional modulation of electrocatalytic species and thus enhances the catalytic activity. The development of CoMoO 4 -based electrocatalysts for hydrogen evolution reaction (HER) is hindered by insufficient active sites and sluggish reaction kinetics of reconstructed cobalt species. Herein, we rationally designed a CoMoO 4 pre-catalyst loaded on ZnO nanorods, where synergistic structural evolution between ZnO and CoMoO 4 is achieved: continuous ZnO dissolution couples with CoMoO 4 structural evolution, driving Zn incorporation into in-situ generated Co(OH) 2 species. The reconstructed electrocatalyst with Zn-doped Co(OH) 2 as catalytic species can exhibit a low HER overpotential of 40 mV at 10 mA cm − 2 , and maintain an overpotential of 65 mV at 10 mA cm − 2 in simulative seawater electrolyte. Meanwhile, the anion exchange membrane (AEM) electrolyzer with the reconstructed ZnO@CoMoO 4 electrode can exhibit excellent durability, maintaining electrocatalytic performance for 650 h (water electrolysis) and 1000 h (seawater electrolysis). Density functional theoretical (DFT) calculations demonstrate that the Zn dopants in the reconstructed species effectively enhance the HER energetics and mitigate Cl − -induced corrosion during the seawater electrolysis. This work provides fresh insights into the enhancement of the HER activity of reconstructed electrocatalysts based on the structural co-evolution mechanism.
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POLYMER BULLETIN
·
2026
·Vol. 83
·期 5
·215
·
IF 4
Wang Song,Ma Rumeng
Coating polyethylene terephthalate (PET) fabrics by flame-retardant polyacrylate (PAc) is considered as a convenient and efficient method for improving the flame retardancy of PET fabrics. In this study, melamine (MEL) was reacted with phytic acid (PA), leading to the successful synthesis of a PA-based flame retardant, MP. Subsequently, aluminum diethylphosphinate (ADP) and MP were compounded at a mass ratio of 18:2 and incorporated into the PAc coating to prepare a flame-retardant PAc coating. When this flame-retardant PAc coating was coated to the surface of PET fabric, PET-ADP-MP 18:2 was obtained. The PET-ADP-MP 18:2 fabric exhibited excellent flame-retardant performance, achieved fire rating B 1 in the Vertical flammability test (VFT), with a limiting oxygen index (LOI) of 26.3%. Compared to the untreated PET fabric, the peak heat release rate (PHRR) was reduced by 70.81%. Moreover, the mechanical properties of PET-ADP-MP 18:2 were also improved. The tensile strength in the warp direction increased by 41.7%, while that in the weft direction increased by 57.7%. The flame retardant obtained by the combination of ADP and MP is therefore considered to hold significant potential for application in the field of flame-retardant PET fabrics (FR-PETs).
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Yang Xue,Zhang Likang,Lu Biao,Yin Zhifu,Liu Zongming,Ding Ao
Heavy metal ions (HMIs) pollution poses severe threats to ecological integrity and human health, necessitating the development of sensitive, cost-effective, and matrix-adaptable detection technologies. Carbon quantum dots (CQDs) and their composites have emerged as promising candidates for HMI detection, owing to their exceptional optical properties, high stability, and excellent biocompatibility. In this study, we report a facile, cost-effective, and green synthesis route for the fabrication of red-emitting (R-CQDs) and green-emitting (G-CQDs) carbon quantum dots. These materials were systematically evaluated for the sensitive and selective detection of Hg 2+ , Ag + , and Cu 2+ ions in both aqueous and saliva samples, thereby addressing critical needs in environmental monitoring and non-invasive health assessment. The detection performance was quantified using both ultraviolet–visible (UV–Vis) absorption spectroscopy and fluorescence (FL) spectroscopy. UV–Vis spectroscopy measurements revealed a limit of detection (LOD) of 50 nmol/L for Hg 2+ at 235 nm (using G-CQDs), 100 nmol/L for Ag + at 226 nm (using G-CQDs), and 5 nmol/L for Cu 2+ at 215 nm (using R-CQDs). Fluorescence spectroscopy further demonstrated LODs of 250 nmol/L for Hg 2+ and 5 µmol/L for Ag + (both at an excitation wavelength of 480 nm using G-CQDs), and 0.5 µmol/L for Cu 2+ at an excitation wavelength of 427 nm (using R-CQDs). Collectively, our findings demonstrate that the as-synthesized R-CQDs and G-CQDs exhibit high sensitivity and selectivity toward target HMIs. Their successful application in real water and saliva samples underscores their significant potential for practical environmental monitoring and personal health screening.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.7
Weilong Shao,Delai Jiao,Shanzhe Li,Biao Lu,Bo Liu,Chunling Zhang,Feifei Zhang
Lithium‑sulfur batteries (LSBs) have attracted significant attention as promising energy storage and power sources due to their exceptionally high energy density (2600 Wh kg −1 ) and the low cost of active sulfur materials. However, their practical deployment is hindered by the severe polysulfide shuttle effect and the poor thermal stability of commercial polypropylene (PP) separators, which tend to shrink at elevated temperatures and cause internal short circuits. In this study, a flame-retardant and lithium polysulfides (LiPSs)-anchoring material (SiO 2 @PD) is synthesized and coated onto PP separators (SiO 2 @PD/PP) via a simple slurry-coating method. The synergistic LiPSs adsorption arises from strong interactions between the phosphorus‑oxygen double bonds (P=O) and hydroxyl groups (-OH) of PD and the Si–O–Si bonds of SiO 2 , effectively suppressing the LiPSs shuttle effect and facilitating Li + transport. Moreover, the release of phosphorus species from PD at elevated temperatures, together with the thermal barrier provided by SiO 2 , significantly enhances flame retardancy and ensures structural integrity under high-temperature operation. Benefiting from these combined effects, LSBs employing SiO 2 @PD/PP separators deliver exceptionally low capacity decay rate of 0.027% per cycle over 1000 cycles at 2.5C, and exhibit excellent thermal resilience, retaining 730.32 mA h g −1 after 100 cycles at 60 °C. This work provides a practical and scalable strategy for designing multifunctional separators toward high-performance and intrinsically safe LSBs.
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POLYMER
·
2026
·
IF 4.5
Jian Guan,Mengsen Niu,Zhangming Wang,Wujian Zhang,Zongjian Liu,Aiming Chen,Shengjie Xia,Panpan Zhang,Haodong Tang
Ultrahigh molecular weight (UHMW) polymers, as high-performance materials, have great potential applications in many aspects. However, the synthesis of UHMW poly (vinylidene fluoride) (PVDF) remains challenging. To achieve the synthesis of UHMW polymers, we developed a novel route to synthesize UHMW PVDF successfully and then investigated the effects of varying conditions and reactants on molecular weight and dispersity ( Đ ). The combination of Ag nanoparticles (Ag NPs) and trichloroacetic acid (TCA) represented a highly effective system for initiating the emulsion polymerization of vinylidene fluoride (VDF). Under pressures up to 70 bar, the PVDF with a number-average molecular weight up to 1.72 × 10 6 Da ( Ð = 1.62) was obtained in the presence of 28.5 ppm Ag NPs at 50 °C. Systematic investigation revealed that the molecular weight and distribution were significantly influenced by the composition of the initiating system, reaction temperature, and surfactant concentration. Preliminary investigation of the mechanism revealed that emulsion polymerization of VDF was initiated by carbon radicals generated from the reaction of Ag NPs and TCA. Furthermore, the separation of radicals in different polymer particles decreases the probability of bimolecular termination, thereby leading to an increase in the molecular weight of polymers. The synthesis of UHMW PVDF using metal nanoparticles and halogenated acids provides significant insights for future development of high-performance fluorinated polymers.
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危险品化学品经营许可证（带存储）