NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Zhenzhong Li,Haohao Chang,Zhiwei He,Zhongyang Su,Mingjian Duan
A novel and efficient immobilized Au nanoparticle catalyst, Au-SH/SO3H-COP, has been synthesized via the in situ reduction of Au3+ ions by thiol groups within a thiol-functionalized covalent organic polymer (SH-COP). This approach leverages the thiol groups as intrinsic reductants, eliminating the need for external agents. Simultaneously, during Au nanoparticle formation, anchored sulfonic acid (–SO3H) sites are generated, which function as Brønsted acid co-catalysts to synergistically enhance catalytic performance. Characterization results confirmed the formation of uniformly dispersed Au nanoparticles with a narrow size distribution centered at 2–3 nm. The covalent anchoring of nanoparticles to the SH-COP support through unreacted thiol groups effectively prevents aggregation and leaching. For the model hydration of phenylacetylene, Au-SH/SO3H-COP exhibited excellent catalytic activity, achieving 92% yield without additional acid additives. Moreover, it displayed broad substrate compatibility across diverse alkynes (aryl and aliphatic), affording 84–94% yields. The catalyst also showed high recyclability, retaining 89% yield after six cycles with negligible Au leaching, underscoring its robustness and reusability.
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AQUATIC TOXICOLOGY
·
2025
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IF 4.3
Xue Yang,Qiwei Zhang,Lihua Yang
The subchronic cardiotoxicity of 2,6-dichloro-1,4-benzoquinone (2,6-DCBQ), an unregulated disinfection byproduct with high environmental detection rates, remains poorly characterized. Using integrated multi-omics (transcriptomics, proteomics, phosphoproteomics) and histopathological analyses in zebrafish, this study systematically elucidated its dose-dependent (low-dose, 10 nM; medium-dose, 100 nM; high-dose, 1000 nM) cardiotoxicity, from adaptive remodeling to failure, over a 35-day exposure period. A reduction in atrioventricular inflow ranging from 81.4 % to 93.9 %, along with lipid droplet accumulation and Z-disc rupture, indicate a dose-dependent cardiac crisis induced by 2,6-DCBQ. Multi-omics analyses, revealed that the kinase cascade involving braf (Myhpc2_T1545), camk2a (Mybpc3_S291), and mark3b (Ttn.1_S28131) arranged dose-dependent cytoskeletal remodeling. High-dose exposure initiated an inflammation-cytoskeleton vicious cycle, wherein chemokine-driven collagen degradation exacerbated Z-disc rupture, while lipotoxic lipid droplets recruit inflammatory infiltrates, collectively escalating irreversible cardiac decompensation. These findings demonstrate that subchronic exposure to 2,6-DCBQ initiates cardiac remodeling, escalating cardiovascular susceptibility in exposed populations.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Junwei Xu,Yifei Li,Haihui Zhou,Jiale Sun,Ping Gao,Nanshan Xu,Wuhua Liu,Songlin Li,Zhongyuan Huang
Despite promise, monocomponent catalysts suffer from the slow reaction kinetics and polysulfide shuttling in lithium–sulfur (Li S) batteries. The introduction of anion doping can offer a promising approach to modify the inherent electronic structure and enhance catalytic activity. Hereby, polyvinylidene fluoride (PVDF)–assisted high–temperature selenization method of the two–dimensional (2D) ZIF–67 precursor was designed to prepare fluorine–doped cobalt selenide embedded in nitrogen–doped carbon nanosheets (F–CoSe 2 /NC) as a novel catalyst. PVDF plays a crucial role in preserving the structural integrity of 2D ZIF–67, resulting in abundant active catalytic sites in the final product F–CoSe 2 /NC. Additionally, the introduction of F doping further modulates the d–band center of CoSe 2 , enhancing its ability to interact with lithium polysulfides (LiPSs) and imparting high catalytic activity. The ordered pore structure and excellent conductivity of F–CoSe 2 /NC can guide uniform lithium deposition. Benefiting from synergistic effects, Li S batteries with F–CoSe 2 /NC modified Janus separators demonstrate excellent rate performance of 816.5 mAh g −1 at 2C, long cycling stability (0.033 % decay/cycle at 5C over 800 cycles) and high areal capacity even under high sulfur loading. This strategy provides a feasible solution to enhance the catalytic efficiency of metal compounds.
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Polymers
·
2025
·Vol. 17
·期 21
·2815
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IF 4.9
Jia-Yi Qi,Xiao-Feng Hu,Dan Qiu,Ya-Juan Wang,Zhang-Fa Tong
Gelatin microparticles (GMPs) can load functional active substances, but they tend to redissolve in high-temperature aqueous solutions during food processing. In this study, a new loading system adapted to food processing and digestive environments was constructed through the crosslinking of tea polyphenols (TP) on GMPs. The effects of pH, temperature, and crosslinking time on the methylene blue (MB) retention rate in crosslinked gelatin microparticles (cGMPs) were investigated, resulting in optimized crosslinking conditions. Compared with GMPs, the surface of cGMPs was denser and smoother. ATR-FTIR results showed that the N–H groups were involved in the formation of hydrogen bonds during the crosslinking process. The crosslinking effect of TP significantly disrupted the triple-helical structure of gelatin. The melting temperature (Tm) of cGMPs is 147.79 °C, which is significantly higher than that of GMPs (87.11 °C), indicating a marked improvement in thermal stability. In high-temperature aqueous solutions, Folic acid-loaded cGMPs (FA-cGMPs) maintained morphological integrity for 2 h (at 40 °C) and 0.5 h (at 60 °C). In vitro digestion simulations revealed excellent sustained-release characteristics of FA-cGMPs, with a release rate of only 4.91% in simulated gastric fluid and 88.13% in simulated intestinal fluid. This study provides an ideal carrier with food processing stability and intestinal-targeted release capabilities for functional active substances.
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RSC Advances
·
2025
·Vol. 15
·期 48
·40478-40490
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IF 4.6
Qisong Feng,Junjun Ma,Yankun Shen,Zheng Zhou,Shilian Wu,Juan Wang,Junpeng Li,Yu Yang
Flexible printed electronics represent a swift, efficient, and cost-effective technique for depositing metallic conductive materials onto flexible substrates, particularly with the pivotal advancement of functional conductive inks. Metal–organic decomposition conductive inks have garnered substantial interest owing to their straightforward synthesis, convenient storage, and low processing temperatures. However, during low-temperature heating, these inks frequently encounter issues such as fast pyrolysis and gas escape, leading to numerous defects in the microstructure of silver films. Moreover, low silver content results in a high volumetric shrinkage rate, negatively impacting electrical conductivity. To address these limitations, this study synthesized four distinct silver precursors and conducted an in-depth analysis of their chemical compositions, thermal behaviors, and microscopic morphologies. Conductive inks were developed with a high silver content using silver citrate as the silver source with gradient thermal volatilization and low-temperature reduction properties. The impact of solvents and complexing agents on the performance of ink formulations was then examined. Furthermore, the evolution of the inks' microstructure was investigated during thermal decomposition along with the influence of the microscopic morphology on electrical conductivity. Finally, the thermal decomposition mechanism was elucidated in detail. By introducing organic solvents with varying boiling points, the intensity of thermal decomposition was effectively reduced, thereby minimizing the appearance of surface defects such as bubble holes and sintering marks. This strategy significantly enhanced the density of the silver film, reduced its surface roughness, and improved its electrical conductivity.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Dongyao Lin,Peijie Wang
In this study, the influence of various factors on photocatalytic hydrogen production was investigated using urea-treated corn straw as sacrificial agent and non-noble metal composite materials as catalysts. The influence of straw biomass on photocatalytic hydrogen production performance under different treatment conditions was also studied. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM) were employed to characterize the composition, structure, and morphology of catalyst and corn straw. Non-noble metal composite catalyst Cu(OH)2-Ni(OH)2/TiO2 was prepared by chemical deposition method. The catalyst performance was studied by changing the Cu:Ni ratio and CuNi:TiO2 ratio, to obtain the suitable photocatalyst for biomass reaction system. Urea treatment was found to significantly improve the surface activity of corn straw for photocatalytic hydrogen evolution reaction. Under optimal conditions, the photocatalytic hydrogen production reached a maximum of 108.37 μmol after 4 h using 0.1 g 5wt%Cu(OH)2-Ni(OH)2/TiO2 as catalyst and 0.05 g urea-treated corn straw as sacrificial agent in 100 mL water. This strategy of using non noble metals as photocatalyst and natural biomass as sacrificial agent greatly reduces cost and environmental pollution, which is a promising research direction.
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JOURNAL OF CHROMATOGRAPHY A
·
2025
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IF 4
Jing Zhou,Tao Liu,Lili Chen,Hui Chen,Lan Zhang
Brevetoxins (BTXs), lipophilic cyclic polyether neurotoxins released by Karenia brevis during harmful algal blooms, pose significant ecological and public health threats through seawater contamination and trophic accumulation. Despite their importance, direct detection of BTXs in seawater remains largely unexplored due to trace-level concentrations and severe matrix interferences. BTX-1, a representative toxin with well-defined structure and high stability, serves as a model compound. Here, we report the novel analytical strategy for BTX-1 determination in seawater, enabled by yolk–shell phosphorus-doped carbon nanocages (Y-Co/P-NCNCs) as high-performance magnetic solid-phase extraction (MSPE) sorbents. The unique yolk–shell architecture provides dual external–internal diffusion pathways that shorten transport distances and accelerate adsorption kinetics, while phosphorus doping introduces polar defects and structural heterogeneity that enhance specific interactions with BTX-1 molecules. Coupled with HPLC–MS/MS, the developed MSPE protocol achieved high enrichment efficiency, excellent selectivity, and rapid recovery, with recoveries of 83.5% to 105.4%, limits of detection down to 5.0 pg mL⁻¹, and relative standard deviations below 11.8%. This work not only establishes a robust platform for trace BTX-1 monitoring in seawater but also demonstrates a generalizable materials design strategy for yolk–shell heteroatom-doped carbons in the enrichment of bulky, hydrophobic marine toxins from complex environmental matrices.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Zhihui Xu,Jing Li,Xiaoling Peng,Shan Tao,Jingcai Xu,Bo Hong,Xinqing Wang
Developing high-performance microwave absorbers with strong absorption, broad bandwidth, and small thickness remains challenging. Herein, we report a novel strategy for constructing hierarchical LaFeO₃/Co/C composites by in-situ growing ZIF-67 on biomimetic corncob-like LaFeO₃ (LFO) followed by pyrolysis. The hollow architecture of LFO, featuring vertically aligned nanosheet arrays, provides abundant nucleation sites and facilitates multiple reflections and scattering of incident microwave. The synergistic effect between the dielectric LFO and magnetic Co/C significantly improved the impedance matching and attenuation. The optimized composite exhibited exceptional minimum reflection loss (RL min ) of -54.9 dB at 1.5 mm and a broad effective absorption bandwidth of 5.44 GHz at 1.7 mm (almost covering the entire Ku-band). The performance is attributed to the enhanced impedance matching, synergistic dielectric-magnetic loss, and intensive interfacial polarization. This work provides a valuable insight for designing high-efficiency EMW absorbers through morphological and compositional regulation.
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Carbon Capture Science & Technology
·
2025
·
IF 10.5
Jia Song,Long Shi,Jing Wei,Min Deng,Zikang Qin,Lin Yang,Junfeng Zheng,Wenju Jiang,Lu Yao,Zhongde Dai
Axial coordination engineering is a promising method to regulate the active sites of single atom catalysts (SACs) in Electrochemical reduction of CO 2 (ECR) and further realize the manipulating of the electrocatalytic activity, selectivity, and stability of catalysts. Here, a facile post-synthetic modification strategy of metal exchange and heteroatom dopant was proposed to develop a single iron atom catalyst coordinated with four planar N atoms and one axial Br atom (denoted as Fe x -NCBr y ) for ECR to CO. By altering the operating conditions including pyrolysis temperature as well as dopant amount of Fe and Br, the optimized Fe 20 -NCBr 0.3 catalyst acquired more surface-active sites and lower impedance, exhibiting an enhanced CO selectivity of 93.78% with a CO reduction current density of -21.16 mA cm −2 at -0.9 V (vs. RHE). This work provides fresh possibilities for tuning the SACs coordination environment with an axial heteroatom for improved ECR performance.
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WATER RESEARCH
·
2025
·
IF 12.4
Xiao Luo,Yihan Li,Xiaoke Ma,Tapas Sen,Lin Zhao,Yongkui Yang,Peizhe Sun
The individual Fe(VI) as FeO 4 2- or peroxydisulfate (PDS) oxidation process faces challenges of limited oxidation efficiency, excessive dosage consumption, and a narrow pH range. Fe is an important component in both Fe(VI) oxidation and PDS activation. We propose linking Fe in the combined Fe(VI)/PDS process to address the challenges of their individual processes. The contribution of Fe species to reactive oxygen species (ROS) production in the Fe(VI)/PDS process and the regulatory effects of quinones on Fe species in the Fe(VI)/PDS-benzoquinone (BQ) process were investigated. The reactive oxidation species generated by the Fe(VI)/PDS process included high-valency iron species such as Fe(VI), Fe(V), and Fe(IV); hydroxy radicals (∙OH), singlet oxygen ( 1 O 2 ), and SO 4 ˙ˉ contributed differently at varying pH levels. PDS accelerated the conversion of Fe(VI) to Fe(V) and Fe(IV), which are more reactive, and facilitated their regeneration from Fe(III) and Fe(II). The Fe(II) concentration in the Fe(VI)/PDS process increased by 35.0% after BQ addition, which enhanced PDS activation and shifted the dominant oxidizer from high-valency iron to ROS. In the Fe(VI)/PDS-BQ process, norfloxacin underwent oxidative degradation via piperazinyl ring degradation, defluorination, and quinolone group degradation, as evidenced by degradation byproducts and further supported by density functional theory calculations. The Fe(VI)/PDS-BQ process significantly reduced the toxicity of norfloxacin. A novel Fe(VI)/PDS-BQ process was developed with the potential to eliminate antibiotics from water and to identify the Fe-involved oxidation mechanism regulated by BQ addition and pH.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Quan Yuan,Yiran Hu,Qin Zhu,Chunmei Wang,Xiaomin Dou,Jun Liu
Water resource shortage and water pollution are global challenges. Simultaneously obtaining clean water and mitigating pollutants from harsh water sources are continuously pursued in research community and industry sector. In this work, a TiO 2 /g-C 3 N 4 /PPy@MS (TGP@MS) composite was fabricated to harvest water and mitigate tylosin from wastewater concurrently through a coupled process of solar-driven evaporation and photocatalysis. The composite presents exceptional hydrophilicity, broad-spectrum light absorption, and superior catalytic activity. Incorporating polysized phenylamine onto TiO 2 /g-C 3 N 4 enhanced infrared light absorption, extending the light absorption across the full solar spectrum range of 300–1200 nm and ultimately achieving an absorption rate of 91.6 % within this range. The 3D porous structure and the hydrophilic nature of the hydrogel sponge facilitated the capillary-driven water transport to surfaces. Under one sun condition, an evaporation rate of 1.49 kg/(m 2 ·h) and a photothermal conversion efficiency of 89.4 % were achieved for TGP@MS. Active species including ·OH and 1 O 2 were generated from the TiO 2 /g-C 3 N 4 components, degrading 90 % of tylosin within 150 min. Due to the versatile purification capabilities, TGP@MS could treat a wide range of water samples, enabling simultaneous water recovery and pollutant removal. Therefore, this work demonstrates significant potential in addressing the water crisis in underdeveloped areas. It achieves this by simultaneously producing clean water and mitigating pollutants from low-quality water sources, using green and sustainable solar energy.
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Materials Today Chemistry
·
2025
·
IF 6.7
Hongmei Liu,Boyue Zheng,Zhengxue Ge,Mengyun Liu,Caihong Tao,Fangbin Fan
The analysis and treatment of hazardous substances in food have long been constrained by the dual challenges of limited single-target recognition capability and low resource utilization efficiency. To overcome these limitations, this study developed an ionic liquid-hydrogel material using a polymerization technique. The material featured a stable porous nanostructure and exhibited dual functionality, enabling highly efficient photo-catalytic degradation and adsorptive extraction. Under optimized conditions, it achieved a degradation rate of over 90 % for the dye Amaranth and extraction recovery exceeding 85 % for three benzoylurea pesticides. Mechanistic studies using in-situ IR spectroscopy revealed that the material's efficient and synergistic pretreatment capability for the two distinct classes of pollutants was attributed to the high substrate specificity of its active sites, which ensured that the two pathways operated independently without interference, guaranteeing the reliability of the treatment process. In conclusion, the developed dual-functional material combining with the advantages of low cost, ease of preparation and environmental friendliness provided an innovative strategy for the simultaneous pretreatment of multiple food contaminants and represented a significant advancement in this field.
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危险品化学品经营许可证（带存储）