化学•材料最新文献

{"title":"Microplastic Diversity as a Potential Driver of Soil Denitrification Shifts.","authors":"Tian-Gui Cai,Da Lin,Bang Ni,Tian-Lun Zhang,Yi-Fei Wang,Dong Zhu","doi":"10.1021/acs.est.5c04981","DOIUrl":"https://doi.org/10.1021/acs.est.5c04981","url":null,"abstract":"Microplastics (MPs) are raising significant global concerns due to their environmental impacts. While most studies have focused on the effects of individual MP types, MPs in natural environments typically coexist as multiple types, and their combined effects remain poorly understood. In this study, we conducted a microcosm experiment with four levels of MP diversity (0, 1, 3, and 5 types) to investigate the effects of MP diversity on soil ecosystem functions using metagenomic sequencing. Our results revealed that increasing MP diversity significantly raised soil pH and organic carbon content while reducing available nitrogen. Notably, bacterial alpha diversity (Shannon and Invsimpson indices) increased significantly with higher MP diversity. Moreover, increasing MP diversity markedly shifted bacterial life-history strategies to adapt to the altered environment. Importantly, the abundance of nitrogen-related functional genes also increased with MP diversity. In particular, the abundance of denitrifying genes, predominantly driven by Rhodocyclaceae, was notably enhanced, resulting in a reduction of soil available nitrogen. Collectively, these findings offer valuable insights into the impact of MP diversity on soil function─especially within the nitrogen cycle─and have important implications for soil management strategies under MP stress.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"25 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145003218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strong Metal-Support Interactions in Catalytic Oxidation of VOCs: Mechanistic Insights, Support Engineering Strategies, and Emerging Catalyst Design Paradigms.","authors":"Ziyue Jiang,Yongtao Li,Ziyu Tang,Dingkun Yuan,Fawei Lin","doi":"10.1021/acs.est.5c09511","DOIUrl":"https://doi.org/10.1021/acs.est.5c09511","url":null,"abstract":"Volatile organic compounds (VOCs) significantly impact air quality as photochemical smog precursors and health hazards. Catalytic oxidation is a leading VOC abatement method but suffers from catalyst deactivation due to metal sintering and competitive adsorption in complex mixtures. Strong metal-support interactions (SMSIs) provide atomic level control of interfacial electronic and geometric structures. SMSI enables bidirectional charge transfer, d band center modulation, oxygen vacancy generation, and tunable encapsulation that together promote O2 activation, lower barriers, and impart thermal and chemical robustness. This review synthesizes mechanistic insights and recent progress in SMSI-enabled VOC oxidation, integrating in situ and operando probes with kinetics. Reactivity and selectivity across aromatics, alkanes, oxygenates, and chlorinated species are rationalized by SMSI-mediated tuning of adsorption and intermediate evolution. Practical levers include control of particle size and dispersion, core-shell architectures, metal loading, and support acidity or basicity. Emerging directions include single atom catalysts, high entropy alloys, and nonmetal supports. Key challenges concern the dynamic evolution of SMSI under realistic feeds and the scalable, reproducible synthesis of interfaces. Future developments combining in situ characterization with data-driven catalyst design hold promise for achieving durable, high-performance VOC abatement with reduced precious metal usage.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"16 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145003217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recyclable Cu-Catalyzed N-Methylation and C5-Methylthiomethylation of Isatins with DMSO.","authors":"Yi Xiao,Xiya Zhang,Junyu Zhou,Fei Yuan,Lei Wu,Zheng Liu,Xiaojuan Wang,Jingxian Yu,Shiqing Li","doi":"10.1021/acs.joc.5c01815","DOIUrl":"https://doi.org/10.1021/acs.joc.5c01815","url":null,"abstract":"An unprecedented recyclable system of copper-catalyzed C-C/N coupling of isatins and DMSO without any oxidant and acidic/basic additive has been unlocked. The NH-isatins occur tandem N-methylation and C5-methylthiomethylation in order, while N-substituted isatins proceed C5-methylthiomethylation only. DMSO serves as Me and MeSCH2 sources as well as the solvent. DCE is essential for providing a radical initiator and halogen cation pool. In this protocol, two vital ionic liquids (ILs), reactive methyl(methylene)-sulfonium and inert trimethylsulfonium, are generated in situ to promote homogeneous-to-heterogeneous phase transition. The ILs accumulate in the lower layer to drag the copper catalyst but push the product, enabling separating the catalyst and product through simple decantation. The lower layer can be recycled as a catalyst for at least six cycles. The systematic and comprehensive control experiments, ESI-MS, and DFT calculations indicate that site selectivity is controlled by atomic charge distribution and steric factors; and the interaction between ILs and Cu salts can reduce the reaction energy barrier.","PeriodicalId":57,"journal":{"name":"Journal of Organic Chemistry","volume":"40 1","pages":""},"PeriodicalIF":4.354,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145003254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in bismuth oxyhalides BiOX (X = Cl, Br and I) based photocatalyst: Synthesis, properties, applications and looking beyond","authors":"Linlin Zhang ,&nbsp;Xiaonan Sun ,&nbsp;Rongrong Chen ,&nbsp;Jun Wang","doi":"10.1016/j.rser.2025.116249","DOIUrl":"10.1016/j.rser.2025.116249","url":null,"abstract":"<div><div>To solve the problems of global energy shortage and environmental pollution, in recent years, semiconductor photocatalysis technology that converts solar energy into chemical energy has been extensively studied. In terms of semiconductor photocatalysts, BiOX has received extensive attention due to its adjustable band structure and the characteristics of exposing different high-energy surfaces. A large number of studies have shown that BiOX-based photocatalysts have excellent photocatalytic performance in energy and environmental purification. This article reviews the latest developments in the design and synthesis of various BiOX and BiOX-based photocatalysts. The basic physical and chemical properties of BiOX and its growth mechanism are summarized. In addition, the application of BiOX-based photocatalysts in photocatalytic hydrogen production, CO₂ reduction to hydrocarbon fuels, and pollutant degradation are also discussed. Finally, a brief outlook on the development prospects and challenges of BiOX and BiOX-based photocatalysts is given.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"226 ","pages":"Article 116249"},"PeriodicalIF":16.3,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Barrier-Free Zinc Dimer Rotor on a Borozene-like BSi₅^3- Stator: The Smallest Molecular Compass with Planar Pentacoordinate Boron.","authors":"Bo Jin, Miao Yan, Lin-Yan Feng, Zai-Ran Wang, Chang-Qing Miao, Ying-Jin Wang","doi":"10.1021/acs.jpca.5c04721","DOIUrl":"https://doi.org/10.1021/acs.jpca.5c04721","url":null,"abstract":"<p><p>This work introduces the novel anionic cluster BSi₅Zn₂^- as the smallest molecular \"compass\", featuring a unique two-layered architecture with a planar pentacoordinate boron (ppB) center. The cluster comprises a quasi-planar BSi₅^3- stator─a silicon-based analogue of borozene with σ/π double aromaticity (6π + 10σ delocalized electrons)─and a Zn₂ rotor dimer. High-level calculations (CCSD(T)//PBE0-D3) reveal an ultralow rotational barrier of 0.02 kcal mol^-1 for the Zn₂ dimer, enabling barrier-free 360° rotation on the stator surface, as confirmed by Born-Oppenheimer molecular dynamics (BOMD) simulations at 298-800 K. Bonding analysis attributes this exceptional fluxionality to a hybrid ionic-covalent interaction best described as [Zn₂⁺][BSi₅^2-], where charge transfer (Zn₂ → BSi₅) ensures electrostatic stability, while the delocalized electron cloud of the aromatic stator minimizes rotational resistance. This design successfully extends to BGe₅Zn₂^- but fails for BSn₅Zn₂^- due to size mismatch, highlighting the synergy of electronic delocalization and geometric constraints. The study pioneers the extension of nanorotor design from pure boron clusters to group 14 element-based platforms with benzene-like σ/π delocalization, establishing the smallest molecular compass based on a minimal stator (6-atom BSi₅^3-) and establishing a new paradigm for dynamic molecular machines.</p>","PeriodicalId":59,"journal":{"name":"The Journal of Physical Chemistry A","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Dynamics Simulation of the Interaction of Lipidated Structurally Nano Engineered Antimicrobial Peptide Polymers with Bacterial Cell Membrane.","authors":"Amal Jayawardena, Andrew Hung, Greg Qiao, Elnaz Hajizadeh","doi":"10.1021/acs.jpcb.5c02067","DOIUrl":"https://doi.org/10.1021/acs.jpcb.5c02067","url":null,"abstract":"<p><p>The rapid emergence of multidrug-resistant (MDR) bacteria demands development of novel and effective antimicrobial agents. Structurally nanoengineered antimicrobial peptide polymers (SNAPPs), characterized by their unique star-shaped architecture and potent multivalent interactions, represent a promising solution. This study leverages molecular dynamics simulations to investigate the impact of lipidation on SNAPPs' structural stability, membrane interactions, and antibacterial efficacy. We show that lipidation with hexanoic acid (C6), lauric acid (C12), and stearic acid (C18) enhances the α-helical stability of SNAPP arms, facilitating deeper insertion into the hydrophobic core of bacterial membranes. Among the variants, C12-SNAPP exhibits the most significant bilayer disruption, followed by C6-SNAPP, whereas the excessive hydrophobicity of C18-SNAPP leads to pronounced arm back-folding toward the core, reducing its effective interaction with the bilayer and limiting its bactericidal performance. Additionally, potential of mean force (PMF) analysis reveals that lipidation reduces the free energy barrier for translocation through the bilipid membrane compared to nonlipidated SNAPPs. These findings underscore the critical role of lipidation in optimizing SNAPPs for combating MDR pathogens. By fine-tuning lipid chain lengths, this study provides a framework for designing next-generation antimicrobial agents to address the global antibiotic resistance crisis, advancing modern therapeutic strategies.</p>","PeriodicalId":60,"journal":{"name":"The Journal of Physical Chemistry B","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The important interplay between metal ions and the intermediate filament protein vimentin.","authors":"Estely J Carranza, Dylan T Murray, Marie C Heffern","doi":"10.1007/s00775-025-02124-x","DOIUrl":"https://doi.org/10.1007/s00775-025-02124-x","url":null,"abstract":"<p><p>Vimentin is a principal intermediate filament (IF) protein that is essential for maintaining cytoskeleton architecture and cellular mechanical integrity. Growing evidence is revealing that metal ions play critical roles in modulating the structure, assembly, and mechanics of vimentin IFs. Despite this, a detailed molecular-level understanding of vimentin-metal interactions and its functional consequences remains incomplete. This review summarizes the current knowledge of metal-induced effects on the structural and mechanical properties of vimentin and highlights how post-translational modifications and cytoskeletal dynamics may alter these metal-protein interactions. Advancing our understanding of the interplay between metal ions and vimentin IFs will enhance our comprehension of the complex mechanisms governing the versatile functions of vimentin and other IF proteins in health and disease.</p>","PeriodicalId":603,"journal":{"name":"Journal of Biological Inorganic Chemistry","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Operando Evaluation of the Electrochemically Active Area in a Solid Oxide Fuel Cell Porous Electrode by Micro X-ray Absorption Spectroscopy.","authors":"Yoshinobu Fujimaki,Takashi Nakamura,Yuta Kimura,Kiyofumi Nitta,Oki Sekizawa,Yasuko Terada,Keiji Yashiro,Tatsuya Kawada,Koji Amezawa","doi":"10.1021/acs.jpclett.5c02422","DOIUrl":"https://doi.org/10.1021/acs.jpclett.5c02422","url":null,"abstract":"An operando X-ray absorption spectroscopic technique, which enables us to measure X-ray absorption spectra with a position resolution of submicrometers at increased temperatures while controlling atmospheres and passing an electrical current through the specimen, was developed. By applying this technique, the electrochemically active area in a porous La0.6Sr0.4CoO3-δ electrode for a solid oxide fuel cell (SOFC) was experimentally and directly evaluated for the first time. The characteristic length of the active area was approximately 1 μm from the electrode-electrolyte interface under a cathodic overpotential of 140 mV at 873 K under 10-2 bar of P(O2), although the investigated electrode was thicker than 50 μm. This demonstrated that a reaction in an SOFC electrode inhomogeneously proceeds in a very limited area near the electrode-electrolyte interface, even when a mixed ionic and electronic conducting oxide is used as the electrode, and that direct evaluation of the active area can provide guidelines for high-performance electrode design.","PeriodicalId":62,"journal":{"name":"The Journal of Physical Chemistry Letters","volume":"304 1","pages":"9599-9605"},"PeriodicalIF":6.475,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145003230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorescence Quenching as a Diagnostic Tool for Prediction Reliability Assessment and Anomaly Detection in EEM-Based Water Quality Monitoring.","authors":"Yongmin Hu,Céline Jacquin,Eberhard Morgenroth","doi":"10.1021/acs.est.5c05952","DOIUrl":"https://doi.org/10.1021/acs.est.5c05952","url":null,"abstract":"Excitation-emission matrix (EEM) spectroscopy offers rapid and informative water monitoring, but its reliability is limited by chemical composition variability, which disrupts the relationship between fluorescence signals and contaminant concentrations. Recognizing this limitation, the lack of a robust and physically interpretable tool for assessing prediction reliability has become a critical bottleneck. In this work, the composition and photophysical inconsistencies among fluorescent compounds underlying the same fluorophore signal were identified as key sources of predictive inaccuracy. To detect these inconsistencies, fluorescence quenching was incorporated into EEM analysis with parallel factor analysis (PARAFAC). Apparent F0/F─the ratio of PARAFAC component intensity before and after extrinsic quencher addition─was proposed as an indicator for model failure and treatment anomaly detection. Validations with both model compound mixtures and real-world greywater samples showed that shifts in apparent F0/F reflect changes in the relationship between Fmax and target concentrations of total cell count (TCC) and dissolved organic carbon (DOC). Two practical tools were developed based on apparent F0/F: a clustering method for post hoc chemical composition analysis, and a thresholding method for outlier detection in real-time monitoring. This work highlights the added value of fluorescence quenching for improving the reliability and interpretability of EEM-based water monitoring at the subfluorophore level.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"39 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144995839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospun porous nanofibers for sustained drug delivery: Degradation-controlled release through architectural design","authors":"Min Lao,&nbsp;Xin Li,&nbsp;Yingjie Wang,&nbsp;Junlang Li,&nbsp;Zhengjie Tian,&nbsp;Jiale Zhang,&nbsp;Shaofeng Yin,&nbsp;Xiaoting Deng","doi":"10.1016/j.colsurfb.2025.115126","DOIUrl":"10.1016/j.colsurfb.2025.115126","url":null,"abstract":"<div><div>Diclofenac sodium (DS), a non-steroidal anti-inflammatory drug used for treating inflammatory pain, has a short elimination half-life, which can lead to fluctuations in blood drug concentration. Therefore, developing sustained-release formulations is necessary to meet clinical needs. Biodegradable polymers exhibit excellent sustained-release properties and good biocompatibility, making them suitable for processing into nanofiber-based drug delivery systems via electrospinning technology. Using electrospinning combined with a non-solvent-induced phase separation mechanism, porous nanofibers with different structures were successfully prepared, including non-porous uniaxial nanofibers, porous coaxial nanofibers, double-layered nanofibers with a porous mesh surface, and porous uniaxial nanofibers. The results demonstrated that drug release is influenced by fiber structure and morphology. Among these, the coaxial porous shell-core structure(NFs 2) achieved long-term release kinetics, confirming a synergistic mechanism combining diffusion and matrix degradation. The prepared samples were analyzed using kinetic modeling and were found to conform to the Ritger-Peppas model. This study investigates the impact of electrospun nanofiber structure and morphology on drug delivery, providing significant theoretical and practical insights for the development of innovative sustained-release formulations.</div></div>","PeriodicalId":279,"journal":{"name":"Colloids and Surfaces B: Biointerfaces","volume":"257 ","pages":"Article 115126"},"PeriodicalIF":5.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}