ACS Omega最新文献

{"title":"Oxidant-Free Thiol–Ene Grafting of Granular Activated Carbon for Mercury(II) Adsorption from Aqueous Solution and Synthetic Gas Condensate","authors":"Aphinan Saengsrichan,&nbsp;Jakkapop Phanthasri,&nbsp;Supawadee Namuangruk,&nbsp;Poobodin Mano,&nbsp;Suttipong Wannapaiboon,&nbsp;Doan Pham Minh,&nbsp;Sanchai Kuboon,&nbsp;Saran Youngjan,&nbsp;Teera Butburee,&nbsp;Issaraporn Rakngam,&nbsp;Panot Krukkratoke,&nbsp;Gopinathan Sankar,&nbsp;Nurak Grisdanurak,&nbsp;Suthirat Kittpongvises,&nbsp;Rattabal Khunphonoi,&nbsp;Pongtanawat Khemthong,&nbsp;Pummarin Khamdahsag","doi":"10.1021/acsomega.6c09402","DOIUrl":"https://doi.org/10.1021/acsomega.6c09402","url":null,"abstract":"<p>Mercury removal fromaqueous and hydrocarbon media requiressorbentsthat combine strong binding affinity with sufficient pore accessibilityand mass transfer. In this study, granular activated carbon (GAC)was treated with 1,2-ethanedithiol through an oxidant-free, thermallyinitiated thiol–ene-type radical route to produce sulfur-functionalizedGAC (S-GAC) with different sulfur loadings. The sulfur content increasedfrom 3.38 to 15.07 wt %, while the BET specific surface area decreasedfrom 859 to 25 m² g^–1, indicating progressivepore occupation and blockage. At low initial Hg(II) concentration,sulfur functionalization enhanced Hg(II) removal in both aqueous solutionand synthetic gas condensate, with 10–30%S-GAC achieving verylow residual Hg(II) concentrations. At elevated aqueous Hg(II) concentrations,pristine GAC exhibited faster initial uptake and approached a plateauearlier, whereas S-GAC showed slower but sustained adsorption. Atapproximately 40 mg L^–1 Hg(II) concentration, 5%S-GACand 10%S-GAC ultimately achieved slightly higher observed uptakesthan pristine GAC, while at approximately 120 mg L^–1 pristine GAC retained the highest uptake over the monitored period.These results show that the effect of sulfur functionalization dependson Hg(II) loading, contact time, and the balance between Hg–Saffinity and pore accessibility. XPS, Hg L₃-edge XAS, andDFT calculations were consistent with sulfur-containing Hg coordinationenvironments and more favorable interaction near sulfur-rich edgeconfigurations. Sulfur functionalities remained strongly retainedover pH 2–10, although regeneration performance decreased withrepeated cycles. Overall, Hg(II) capture reflects the combined effectsof sulfur-site affinity, pore accessibility, mass transfer, Hg(II)loading, and the treatment matrix.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69241–69254"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375091","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":"Identification and Characterization of a Cytosolic Malate Dehydrogenase as a Potential Drug Target in Echinococcus multilocularis","authors":"Pascal Zumstein,&nbsp;Laura Vetter,&nbsp;María Eugenia Ancarola,&nbsp;Trix Zumkehr,&nbsp;Britta Lundström-Stadelmann","doi":"10.1021/acsomega.6c05466","DOIUrl":"https://doi.org/10.1021/acsomega.6c05466","url":null,"abstract":"<p>Alveolar echinococcosis, caused by the larval stage (metacestode)of <em>Echinococcus multilocularis</em>, isan emerging zoonotic disease with limited treatment options, highlightingthe need for new therapeutic targets. Like other helminths, <em>E. multilocularis</em> relies on anaerobic metabolismvia malate dismutation, a poorly characterized pathway. In this study,cytosolic malate dehydrogenase (cMDH), a key enzyme in this pathway,was investigated as a potential drug target. Bioinformatic analysesidentified three cMDH homologues in <em>E. multilocularis</em>, all exhibiting canonical domain architecture and clustering withmetazoan orthologs. Transcriptomic profiling revealed that EmuJ_000417100(<em>Em</em>cMDH) is highly expressed in both <em>in vitro</em>-cultured metacestode vesicles and parasite lesions in mice, whereasother paralogs show minimal expression. Recombinant <em>Em</em>cMDH catalyzed the reversible conversion of malate and oxaloacetate,displaying typical cMDH kinetics with higher catalytic efficiencyand lower <em>K</em>_m values for oxaloacetate (16.4± 3.2 μM) and NADH (11.5 ± 3.9 μM) comparedto malate (0.21 ± 0.10 mM) and NAD⁺ (0.43 ± 0.11mM), indicating a preference for oxaloacetate reduction. RNAi-mediatedknockdown of <em>Em</em>cMDH impaired metacestode vesicledevelopment, demonstrating its important role in parasite growth.The natural compound gossypol potently inhibited <em>Em</em>cMDH (IC₅₀ = 0.25 ± 0.04 μM) with ∼80-foldselectivity over murine cMDH. As proof-of-concept, gossypol also reducedparasite viability (IC₅₀ = 6.43 ± 0.66 μM),though cytotoxicity was observed in mammalian cells. While the knownpromiscuity of gossypol precludes attributing these effects solelyto <em>Em</em>cMDH inhibition, these findings hint at <em>Em</em>cMDH as a functionally relevant metabolic enzyme and apotential drug target, providing a foundation for further validationand development of selective cMDH-targeted therapies.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68397–68410"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375092","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":"Genetically Expanded Fluorescent SSBT7 RNA Polymerase in Action: Intriguing Photophysics with Enhanced RNA Production","authors":"Subhendu Sekhar Bag,&nbsp;Aniket Banerjee,&nbsp;Sinchini Barman","doi":"10.1021/acsomega.6c07950","DOIUrl":"https://doi.org/10.1021/acsomega.6c07950","url":null,"abstract":"<p>T7 RNA polymerase(T7-RNAP) is a highly efficient transcriptionalenzyme. However, it is prone to mutation at the functionally importantY571 residue, which strongly influences its functional properties.Here, we demonstrate a strategy to modulate the T7-RNAP enzyme byreplacing the Y571 residue with a fluorescent triazolyl unnaturalamino acid (FTUAA), ^{<strong>TCNB</strong>}<strong>Ala</strong>_{<strong>Ac</strong>}, via genetic code expansion (GCE) technologyusing two orthogonal aminoacyl-tRNA synthetase/tRNA pairs. Thus, ^{<strong>TCNB</strong>}<strong>Ala</strong>_{<strong>Ac</strong>}-encoded variants, herein termed ^{<strong>SSB</strong>}<strong>T7-RNAP</strong>, were successfully expressed, purified, and characterizedby SDS-PAGE, MALDI-TOF mass spectrometry, CD, UV–vis, and fluorescencespectroscopy. Incorporation of ^{<strong>TCNB</strong>}<strong>Ala</strong>_{<strong>Ac</strong>} introduced distinct and enhanced fluorescencesignatures while largely preserving the overall secondary structuresof the engineered enzymes. Notably, these novel ^{<strong>TCNB</strong>}<strong>Ala</strong>_{<strong>Ac</strong>}-encoded variantsexhibited higher relative RNA yields than those of wild-type T7-RNAPunder identical in vitro transcription conditions. Molecular dockingfurther supported the structural compatibility of the modificationwith the promoter-bound enzyme. These findings establish GCE-based,site-specific incorporation of an FTUAA into a functionally relevantsite of T7 RNA polymerase as a promising strategy for generating spectroscopicallytraceable, transcriptionally competent T7-RNAP variants for futureenzyme engineering and mechanistic studies.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68791–68803"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375099","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":"Ultrasonic-Assisted Stir Casting of SiO2-Reinforced AA7075: Microstructure, Strengthening, and Wear","authors":"Kunkumapogu Chinna Maddaiah,&nbsp;Abhishek Agarwal,&nbsp;Nadella Anuradha,&nbsp;Balram Yelamasetti,&nbsp;Jyothula Suresh Kumar,&nbsp;Jyothula Sunil Kumar","doi":"10.1021/acsomega.6c10661","DOIUrl":"https://doi.org/10.1021/acsomega.6c10661","url":null,"abstract":"<p>The present workexamines the effect of SiO₂ nanoparticleaddition on the microstructure, mechanical properties, and dry-slidingwear behavior of AA7075-based metal matrix nanocomposites. Four reinforcementlevels, 0.5, 1.0, 1.5, and 2.0 wt %, were investigated. AA7075 wasreinforced with SiO₂ using an ultrasonic-assisted stir-castingprocess. The process produced relatively uniform SiO₂ distributionsup to 1.5 wt % and a refined aluminum matrix, whereas localized particle-richregions became evident at 2.0 wt %. The tensile strength increasedfrom 190 ± 15 MPa for the unreinforced alloy to 255 ± 22,310 ± 10, 360 ± 22, and 385 ± 12 MPa for compositescontaining 0.5, 1.0, 1.5, and 2.0 wt % SiO₂, respectively,corresponding to strength improvements of approximately 34.2%, 63.2%,89.5%, and 102.6%. Microhardness also increased from 86 ± 3 VHVfor AA7075 to 164 ± 12 VHV for the composite containing 2.0 wt% SiO₂. The improvements in strength and hardness are consistentwith matrix refinement, interfacial load transfer, restriction ofdislocation motion, and thermal-expansion-mismatch-induced dislocationstrengthening. Dry-sliding wear experiments were conducted in accordancewith ASTM G99 at a sliding velocity of 3.14 m s^–1, a total sliding distance of 6 km, and applied loads of 10–50N. The reinforced materials generally showed lower specific wear ratesthan the unreinforced alloy. At 50 N, the specific wear rate decreasedfrom approximately 6900 to 4500 μm³ N^–1 mm^–1 with the addition of 2.0 wt % SiO₂, corresponding to a decrease of approximately 34.8%. The coefficientof friction generally decreased with increasing SiO₂ content,and the 2.0 wt % composite exhibited the lowest values within theinvestigated range. SEM and TEM examinations provided evidence ofchanges in particle distribution and microstructural features withincreasing reinforcement content, while SEM examination of the wornsurfaces revealed corresponding changes in wear morphology. Overall,the present findings show that the ultrasonic-assisted stir-castingroute used in this study produced AA7075–SiO₂ metalmatrix nanocomposites with increased strength and hardness and generallyimproved dry-sliding wear behavior within the investigated compositionand test range.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69389–69408"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375011","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":"Numerical Investigation of CsGeI3 Perovskite Solar Cells Employing PANI-Doped Graphene Oxide as a Hole Transport Layer","authors":"Subaharini Ramalingam,&nbsp;Hariharan Rajasekaran,&nbsp;Thangaraji Vasudevan,&nbsp;Lung-Chien Chen","doi":"10.1021/acsomega.6c10326","DOIUrl":"https://doi.org/10.1021/acsomega.6c10326","url":null,"abstract":"<p>Perovskite solar cells (PSCs) have quickly emerged asstrong contendersfor future photovoltaic technologies, propelled by their outstandingand steadily improving power conversion efficiencies (PCEs). Thiswork utilizes SCAPS-1D to examine and optimize a lead (Pb)-free PSCarchitecture. An environmentally friendly CsGeI₃ absorberwas incorporated into the device architecture, with polyaniline-dopedgraphene oxide (PANI:GO) as the HTL and WS₂ functioningas the ETL. The use of PANI/GO as an HTL represents the primary contributionof this study, providing enhanced charge selectivity and conductivity.Systematic variation of HTL, ETL, and absorber layer thickness wascarried out to identify the best device setup. The optimized structureFTO/WS₂/CsGeI₃/PANI:GO/Ag achieved a PCE of30.8%, a <em>V</em>_oc of 1.14 V, a <em>J</em>_sc of 31.3 mA/cm², and an FF of 86.4%. Theseresults offer a feasible and eco-friendly pathway toward high-performancePb-free PSCs, offering important insights that can drive future progressin device engineering and materials development.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69362–69372"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375166","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":"Tuning Molecular Transformations and Accumulation of Reactive Species in Plasma-Treated Liquids via Organic Biomolecules","authors":"Valeria Veronico,&nbsp;Michele Casiello,&nbsp;Loris Grossi,&nbsp;Roberto Gristina,&nbsp;Vincenza Armenise,&nbsp;Pietro Favia,&nbsp;Eloisa Sardella","doi":"10.1021/acsomega.6c06500","DOIUrl":"https://doi.org/10.1021/acsomega.6c06500","url":null,"abstract":"<p>Plasma processing of liquids is a sustainable platformfor greenchemistry and biomedical applications, enabling the synthesis of inorganicand organic molecules without harmful reagents and with compatibilitywith renewable electricity. PTWS constitute reservoirs of reactiveoxygen and nitrogen species, and their composition is governed notonly by the experimental conditions of the plasma employed for theirgeneration, but also, and predominantly, by the chemical compositionof the precursor liquid. In this study, we demonstrate that organicsolutes actively modulate RONS chemistry. Phenolic compounds suchas <span>l</span>-tyrosine and resorcinol enhance H₂O₂ production while differently affecting nitrogen species, leadingto either scavenging or overproduction of NO₂^–. Mass spectrometry reveals a strong correlation between molecularstructure, plasma-induced modifications, and resulting RONS dynamics.These findings redefine PTWS as dynamic, reactive environments ratherthan passive reservoirs by also explaining the prolonged activityof such liquids. Beyond plasma medicine, they provide a frameworkfor optimizing RONS-based therapies and contribute to the broaderunderstanding of nonequilibrium chemistry in complex liquids. Theresults also open opportunities in water treatment and sustainablechemical transformations, positioning PTWS as versatile tools forcontrolling redox processes in complex aqueous systems.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68534–68550"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375105","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":"Smart Thermosensitive Mesoporous Silica Composites for Precisely Triggered Linalool Release","authors":"Zhenhui Gao,&nbsp;Yanhua Lu,&nbsp;Fengfeng Zhang,&nbsp;Wenlong Bao,&nbsp;Xinhua Song,&nbsp;Fanyu Kong,&nbsp;Rongning Liang,&nbsp;Dean Song","doi":"10.1021/acsomega.6c04870","DOIUrl":"https://doi.org/10.1021/acsomega.6c04870","url":null,"abstract":"<p>To overcome the application limitations of linalool,includingits high volatility and poor stability, mesoporous silica MCM-41 wasused as the carrier, and <em>N</em>-isopropylacrylamide (NIPAM)was employed as the thermosensitive monomer in this study. Acrylamide(AM) was introduced to modulate the lower critical solution temperature(LCST) of poly(<em>N</em>-isopropylacrylamide) (PNIPAM), while <em>N</em>,<em>N</em>′-methylenebis(acrylamide) (BIS),used as a cross-linking agent, was added to enhance structural stability,thus constructing the MCM-41-PNIPAM thermosensitive composite sustained-releasesystem. Characterization results confirmed the successful synthesisof the target material, whose LCST increased to 82–85 °Cwith the increasing AM doping ratio. Sustained-release experimentsindicated that the release rate of linalool significantly increased when the environmental temperature exceeded the LCST. Antibacterialtests revealed that the composite exhibited a remarkable inhibitoryeffect on <em>Bacillus subtilis</em>, <em>Staphylococcus aureus</em>, and <em>Escherichia coli</em> following the temperature-triggered release oflinalool. Moreover, the antibacterial effect could be precisely controlledby regulating the ambient temperature, thereby modulating the release.This study presents a new strategy for the stabilized applicationof linalool, achieves an intelligent response effect of “temperature-triggeredand on-demand release,” and offered a universal method forconstructing intelligent preservation systems.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68329–68340"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375200","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":"In Situ FTIR Spectroscopy as a Kinetic Study Tool for Potassium Butyl Xanthate Industrial Production","authors":"Aleksandr S. Dolgachev,&nbsp;Irina S. Martekhova,&nbsp;Denis N. Nebykov,&nbsp;Evgenii V. Shishkin","doi":"10.1021/acsomega.6c02797","DOIUrl":"https://doi.org/10.1021/acsomega.6c02797","url":null,"abstract":"<p>In situ FTIR spectroscopy was used for the first timeto studythe kinetics of the potassium butyl xanthate synthesis from butanol,carbon disulfide, and potassium hydroxide under conditions as closeas possible to the industrial method. This method allowed us to obtainkinetic curves for the first time at high conversions of the startingreagents, determine the boundaries of the process kinetic region,and develop a kinetic model that takes into account not only the mainreaction but also the side processes. The main reaction kinetic equationconfirms the two-stage mechanism of the xanthation reaction as proposedin the literature. In the first stage, the alcoholate anion formsrapidly in equilibrium, and it adds to carbon disulfide in the secondrate-limiting stage. Due to the specific mechanism of the studiedprocess, the main reaction kinetic equation includes the concentrationratio of BuOH and H₂O. The rate of potassium butyl xanthateformation directly depends on the concentrations of BuOH, CS₂, and KOH and inversely depends on the concentration of H₂O since the concentration of H₂O reduces the butylateanion concentration. The key parameters influencing process selectivity(temperature and the BuOH:H₂O molar ratio) were determined.The kinetic model demonstrates good agreement with the experimentaldata. The obtained results can be used to optimize the potassium butylxanthate industrial production conditions.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68198–68206"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375205","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":"In Vivo Femtonewton-Sensing Nanotribology of Tradescantia Zebrina Leaf Cell Inner Surface Using Roll Rotation Detection","authors":"Snigdhadev Chakraborty,&nbsp;Mukul Sagar,&nbsp;Atanu Ghosh,&nbsp;Krishna Kumari Swain,&nbsp;Mrutyunjaya Rath,&nbsp;Agniva Das,&nbsp;Susy Varughese,&nbsp;Basudev Roy","doi":"10.1021/acsomega.6c08477","DOIUrl":"https://doi.org/10.1021/acsomega.6c08477","url":null,"abstract":"<p>Accessing the propertiesof a plant cell interior noninvasivelyis difficult due to the presence of a cell wall. Nanoparticles largerthan 5 nm cannot be readily phagocytosed inside the cell like animalcells. It is here that we realize that <em>Tradescantia zebrina</em> plant cells have prismatic forms of calciumoxalate crystals present inside them naturally. These crystals makea ready choice to study properties of the inner cell surface withthe application of optical tweezers. Moreover, out-of-plane rotationsin optical tweezers have begun to be explored only recently. The pitchrotation has been detected with high resolution and several applicationsare explored. In this work, we first study the stable configurationwhile trapped in linearly polarized optical tweezers and then explorethe other out-of-plane configurations to detect the roll rotationat high resolution. Then a microrheological analysis is performedto obtain the frictional properties of the inner surface of the plasmamembrane of the leaf cell. The size of the particle is about 5 μmalong the diagonal, so that the contact length with the surface isabout 400 nm. We measure a frictional force of 3 pN at a sensitivityof about 200 fN without averaging.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68870–68879"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375064","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":"Effect of the Applied Pressure on the Physical and Chemical Properties of Nickel Films Prepared by Electroless Plating on Beech Wood","authors":"Jamal Amer","doi":"10.1021/acsomega.6c08879","DOIUrl":"https://doi.org/10.1021/acsomega.6c08879","url":null,"abstract":"<p>Nickel films weredeposited on beech wood substrates using theelectroless plating method, and the effect of applied mechanical pressures(2, 4, 6, and 8 kN/cm²) on their structural, morphological,wetting, and electrical properties was systematically investigated.Nickel-coated wood specimens were subjected to uniaxial pressuresfor 3 s, followed by characterization using scanning electron microscopy(SEM) with energy-dispersive spectroscopy (EDS), X-ray diffraction(XRD), contact-angle (CA) measurements, and current–voltage(<em>I</em>–<em>V</em>) analysis. SEM revealedsurface openings of approximately 2–4 μm at 2 kN/cm², which progressively narrowed with increasing pressure andwere nearly absent at 8 kN/cm². Cross-sectional SEM-EDSconfirmed Ni penetration into the porous wood structure, with thegreatest apparent penetration depth observed at 6 kN/cm². XRD identified face-centered-cubic Ni with a preferential (111)orientation, while Williamson-Hall analysis indicated pressure-dependentvariations in crystallite size and lattice microstrain. The wettingbehavior exhibited a pressure-dependent response, with the highestinitial contact angle observed at 6 kN/cm², followed bya decrease at 8 kN/cm² consistent with increased waterpenetration associated with pressure-induced surface and interfacialdamage. All samples exhibited approximately linear <em>I</em>–<em>V</em> characteristics (<em>R</em>² &gt; 0.99), with the highest electrical response observedat6 kN/cm² and a subsequent decline at 8 kN/cm². Overall, the results demonstrate a pressure-dependent balance betweencompaction of the nickel conductive network at moderate pressuresand mechanical degradation under excessive compression, providinga basis for pressure-controlled design of functional conductive Ni/woodinterfaces.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69003–69012"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375015","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}