ACS Materials Au最新文献

{"title":"Data-Efficient Design of High-Entropy Oxygen Carriers for Chemical Looping Using Active Learning","authors":"Joakim Brorsson,&nbsp;Henrik Klein Moberg,&nbsp;Joel Hildingsson,&nbsp;Jonatan Gastaldi,&nbsp;Tobias Mattisson,&nbsp;Anders Hellman","doi":"10.1021/acsmaterialsau.5c00230","DOIUrl":"10.1021/acsmaterialsau.5c00230","url":null,"abstract":"<p>High-entropy materials,first demonstrated in metallic alloys andlater extended to oxides and other systems, unlock a vast compositionalspace with properties suited for catalysis, energy, and structuralmaterials. However, the high compositional complexity makes systematicexploration challenging, and only a small portion of the design spacehas been studied. To address this, we introduce an active learningstrategy that integrates predictive modeling, uncertainty estimation,and iterative sampling to efficiently navigate embedded compositionalmaterial spaces. This approach continuously learns from previous evaluations,focusing subsequent searches on the most promising regions while reducingboth time and data requirements. We demonstrate this methodology inthe search for high-entropy oxygen carriers for chemical looping,where it rapidly accelerates discovery and identifies promising candidatesmore effectively than conventional trial-and-error or grid-searchapproaches. Importantly, this strategy is general and well-suitedto exploring the vast space of multicomponent materials.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 2","pages":"319–326"},"PeriodicalIF":9.1,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147469180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Design of Aramid Copolymer for Enhanced Toughness and Retention Performance","authors":"Jihwan Lim,&nbsp;Hyelim Kim,&nbsp;Jaemin Im,&nbsp;Yeonhae Ryu,&nbsp;Hyun Ho Choi,&nbsp;Won Jun Lee,&nbsp;Dae Young Lim","doi":"10.1021/acsmaterialsau.5c00216","DOIUrl":"10.1021/acsmaterialsau.5c00216","url":null,"abstract":"<p>Aramidfibers arevalued for their high strength, stiffness, andthermal stability, but their intrinsic chain rigidity restricts toughnessand fatigue resistance. In this study, aramid copolymers containingheteroaromatic 6­(4-aminophenoxy)­pyridine-3-amine (APA) and extendedaromatic 4,4′-bis­(4-aminophenoxy)­biphenyl (BABP) were synthesizedby solution polycondensation and processed into fibers through wetspinning. The incorporation of APA improved ductility through dynamichydrogen bonding, whereas BABP reinforced stiffness and strength throughstrong π–π stacking and rigid biphenyl alignment.The combination of these comonomers with 3,4′-oxidianiline(3,4′-ODA) further enhanced drawability and molecular orientation,resulting in a synergistic improvement in toughness and durability.Under cyclic loading, APA- and BABP-based fibers retained up to 78%and 64% of their initial tenacity, respectively, compared with 34%for the 3,4′-ODA fiber. Corresponding energy retention exceeded50% in APA and 35% in BABP, accompanied by lower hysteresis losses.These results reveal that targeted comonomer design effectively balancesstrength, ductility, and fatigue resistance by tuning hydrogen bondingand π–π stacking. The findings provide molecular-levelinsights for developing next-generation aramid fibers capable of sustainedperformance in demanding mechanical and thermal environments.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 2","pages":"450–460"},"PeriodicalIF":9.1,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147469476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenges and Opportunities in Core–Shell Zeolite Catalysts","authors":"Runhui Zhou,&nbsp;Wei Liu,&nbsp;Zhaoyang Lin,&nbsp;Jian Zhou,&nbsp;Lichen Liu","doi":"10.1021/acsmaterialsau.5c00136","DOIUrl":"10.1021/acsmaterialsau.5c00136","url":null,"abstract":"<p>Zeolites with core–shell morphologies representa captivatingclass of materials that exhibit distinctive catalytic properties incomparison with conventional zeolite catalysts. Due to the orderedorganization of each zeolite component in a core–shell configuration,the stability, mass transport characteristics, and product distributionof these catalysts can significantly differ from those of single-componentzeolites. Consequently, the precise construction and structural characterizationof core–shell zeolite materials present considerable challengesrelative to traditional single-component zeolites. In this review,we provide a comprehensive overview of the synthesis methodologiesfor core–shell zeolite materials, along with a detailed comparisonof the advantages and limitations associated with each approach. Additionally,the characterization techniques currently employed to elucidate thestructural features of core–shell structures will be summarized.Finally, we will explore the opportunities and challenges presentedby core–shell zeolite catalysts in the development of advancedcharacterization techniques and the exploration of emerging applications,contrasting them with conventional zeolite materials.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 2","pages":"243–267"},"PeriodicalIF":9.1,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147469132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D-Printed Biohybrid PE/PCL Biphasic Osteochondral Plug for Knee Cartilage Repair","authors":"Jiayi Guo,&nbsp;Asyraf Abbas,&nbsp;Clara Barbut,&nbsp;Eun Ju Park,&nbsp;Qifeng Lim,&nbsp;Tingyi See,&nbsp;Lincoln Liow,&nbsp;Biyan Zhang,&nbsp;Peili Teo","doi":"10.1021/acsmaterialsau.5c00193","DOIUrl":"10.1021/acsmaterialsau.5c00193","url":null,"abstract":"<p>Biohybrid polyethylene (PE) and polycaprolactone (PCL)were usedto regenerate cartilage and bone tissues for repair of knee jointdefects. Biohybrid polyethylene was synthesized using ring-openingmetathesis polymerization methods with polyethylene-containing macromonomerand arginylglycylaspartic acid (RGD), laminin-derived peptide A5G81(AGQWHRVSVRWG), or hyaluronic acid-containing macromonomer. The resultantbrush copolymers were formulated with ultrahigh molecular weight polyethyleneto create formulations for testing with human chondrocyte assays.PE–RGD formulation was determined to be the most effectivein causing statistically significant chondrocyte proliferation consistently.PCL–RGD was used to create the stem of the plug for osteogenesis.The materials were 3D printed using dual nozzle fused filament fabrication method to create a biphasic interlocking plug for <em>in vivo</em> testing of cartilage and bone regeneration in porcine knee jointdefect models. The studies provide a guide for fabrication of cartilagerepair implants using biohybrid polymers.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 2","pages":"406–414"},"PeriodicalIF":9.1,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147469004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Upcycling Lignin into Porous Hybrid Beads and Sponges for Efficient Removal of Organic and Biological Contaminants from Water","authors":"Nicholas Breitkreuz,&nbsp;Tatyana L. Povolotsky,&nbsp;Philip Nickl,&nbsp;Mohsen Adeli,&nbsp;Rainer Haag,&nbsp;Sanjam Chandna","doi":"10.1021/acsmaterialsau.5c00147","DOIUrl":"10.1021/acsmaterialsau.5c00147","url":null,"abstract":"<p>Modern industrialization leads to the widespread dischargeof pollutants,such as organic dyes and bacterial contamination, into water streams,necessitating efficient and sustainable treatment strategies. To addressthis challenge, we report the fabrication of biodegradable adsorbentsfor efficient adsorption of chemical pollutants while reducing themicrobial load. Herein, kraft lignin (KL) is cross-linked with chitosanto produce highly porous spherical beads, while EDC/NHS ((<em>N</em>-ethyl-<em>N</em>′-(3-(dimethylamino)­propyl)­carbodiimide/hydroxysuccinimide)coupling chemistry enabled the formation of microporous sponges andalginate-integrated beads. Cross-linking with chitosan induced a surfacecharge reversal of lignin from negative (−37 mV) to positive(+51 mV), enhancing its affinity for anionic contaminants. The resultingmaterials exhibited promising adsorption capacity for an organic pollutant(methyl orange). Furthermore, the composites demonstrated efficientbacterial adsorption, achieving complete adsorption of <em>E. coli</em> (∼4 log reduction) using the lignin–chitosansponge. These results highlight the potential of lignin–chitosanarchitectures as sustainable and multifunctional materials for advancedwater purification.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 2","pages":"347–363"},"PeriodicalIF":9.1,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147469465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Harnessing Polymeric Xerogels for Enhanced Wound Care: Properties, Mechanisms, and Applications","authors":"Amrita Kumari,&nbsp;Sweta Acharya,&nbsp;Gautam Singhvi,&nbsp;Ashwin Mali,&nbsp;Ankit Jain","doi":"10.1021/acsmaterialsau.5c00134","DOIUrl":"10.1021/acsmaterialsau.5c00134","url":null,"abstract":"<p>Wounds significantly impact an individual’s qualityof life,necessitating a tailored approach to treatment based on the wound’sstage of healing and condition. Exudate plays a natural role in recovery,but excessive amounts can complicate wound management, creating aneed for advanced therapeutic solutions. Consequently, there is anongoing demand for advanced therapeutic solutions and innovativewound care devices. Xerogels aregaining recognition as promising materials in wound healing therapeuticsdue to their unique properties and multifunctional applications. Thesenanoporous materials, characterized by their large surface area andbiocompatibility, can be engineered using various polymers to enhancetheir effectiveness for specific wound care applications. Their abilityto support clot formation and promote tissue regeneration makes themparticularly valuable for addressing exudative and chronic wounds.This review offers an in-depth examination of emerging research onxerogels in wound treatment, assessing the current landscape and identifyingpotential applications of xerogels in various forms including films,grafts, scaffolds, and particles. Additionally, we explore variousmechanisms of polymer-based xerogel function and summarize recentpatents related to this innovative technology. As research in thisarea progresses, xerogels utilizing different polymers offer advancedsolutions for future wound care therapies.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 1","pages":"90–111"},"PeriodicalIF":9.1,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145999201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Legacy and Future of Aluminum Alloys: Space Exploration and Extraterrestrial Settlement","authors":"Matheus A. Tunes","doi":"10.1021/acsmaterialsau.5c00139","DOIUrl":"10.1021/acsmaterialsau.5c00139","url":null,"abstract":"<p>The metallurgy of aluminum alloys has long shaped thehistory ofspace exploration. Their combination of low density, high strength,and excellent manufacturability and formability makes them indispensablefor structural components in satellites and spacecraft. However, thenext era of human space exploration, spanning long-duration deep-spacemissions and extraterrestrial settlement, poses unprecedented newchallenges, including radiation damage and shielding, thermal cycling,micrometeoroid impacts, hydrogen embrittlement, and other degradationforces acting in synergy. Addressing these issues requires the reinventionof aluminum metallurgy, tailored to space environments. This perspectiveadopts a multidisciplinary approach, tracing the evolution of aluminumalloys in spaceflight, evaluating their performance under space-specificdegradation mechanisms, and outlining future design strategies thatintegrate insights from chemistry, physics, metallurgy, and materialsscience to develop the next generation of space materials.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 1","pages":"1–27"},"PeriodicalIF":9.1,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145999191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facet-Specific Liquid-Phase Exfoliation of an Ionic 1D Crystal, (NbSe4)3I, into Ultrathin Nanoribbons","authors":"Griffin M. Milligan,&nbsp;Cameron J. Collins,&nbsp;Kaitlyn G. Dold,&nbsp;Diana Lopez,&nbsp;Maxx Q. Arguilla","doi":"10.1021/acsmaterialsau.5c00143","DOIUrl":"10.1021/acsmaterialsau.5c00143","url":null,"abstract":"<p>Liquid-phase exfoliation (LPE) of emergent materialscomposed ofweakly bound one-dimensional (1D) and quasi-1D (q-1D) building blockspresents a straightforward route not only for the discovery of confinedphysical states in 1D but also for the realization of scalable functionaldevices. However, compared to the more established routes in two-dimensional(2D) crystals, the nature of LPE in 1D and q-1D crystals presentsa more random process. This distinction arises from the various availableinterchain directions across several crystallographic facets uniqueto 1D and q-1D solids, from which the chains can be cleaved apartinto a stochastic combination of nanowires, nanoribbons, and nanosheets.Using the 1D ionic phase comprised of ∼4.3 Å thin chains,(NbSe₄)₃I, we demonstrate herein the profoundinfluence of crystal morphology, exposed facets, and their degreeof wettability, passivation, and surface roughness in directing theLPE behavior of 1D crystals. Through the growth of bulk crystals aslong needles with exposed (<em>hk</em>0) facets or as quasi-2Dflakes with exposed (00<em>l</em>) facets susceptible to passivation,we show that these two distinct precursor morphologies display divergentbehavior<span></span>both in solvent preference and quality of resultingnanostructures. Under optimal conditions involving bulk needles andtetrahydrofuran as solvent, we show that the LPE of (NbSe₄)₃I results in ultrathin nanoribbons with high aspectratios bearing lengths &gt;5 μm, thicknesses down to 7.2 ±2.6 nm, and widths of 26.4 ± 10.9 nm. The nanoribbons, solutionprocessable as thin films, retain their native crystal structure andsemiconducting character. Moreover, the nanoribbons also manifestpronounced degrees of bending and substrate-driven twisting at thenanoscale while maintaining long-range order. These results highlighta means to understand the fundamental chemical and physical behaviorof noncovalently bound 1D solids through the realization of solution-processable1D nanoribbons and nanowires that also have the potential as componentsfor next-generation devices that approach the atomic scale.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 1","pages":"189–201"},"PeriodicalIF":9.1,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145999211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mild Synthesis of Ag-Decorated TiO2 Aerogels for Light-Driven CO2 Reduction","authors":"David Kiwic,&nbsp;Elena Tervoort,&nbsp;Y Vi Thach,&nbsp;Markus Niederberger","doi":"10.1021/acsmaterialsau.5c00140","DOIUrl":"10.1021/acsmaterialsau.5c00140","url":null,"abstract":"<p>Nanoparticle gelation is a powerful method for creatingporous,crystalline, and translucent aerogels, but it requires stable, concentrateddispersions. Conventional methods for dispersing TiO₂ oftenrely on strong acids like HCl, which are corrosive and limit compatibilitywith acid-sensitive materials. In this work, we introduce a novelapproach using trisodium citrate to functionalize TiO₂ nanoparticles,forming a highly dispersed colloid stable from pH 3 to 12. This approachenables TiO₂ nanoparticle gelation under previously inaccessibleconditions, including slightly acidic (pH = 4), near-neutral (pH =6.5), and mildly alkaline (pH = 9). Our synthesis uses a metal alkoxideas precursor, avoiding TiCl₄ and eliminating HCl as byproduct.We demonstrate cogelation of silver (Ag) and TiO₂ nanoparticlesat near-neutral pH, overcoming Ag corrosion challenges found in acid-basedmethods. The resulting Ag/TiO₂ aerogels are catalyticallyactive for CO₂-to-CO reduction, a key step in developingfossil-free chemical processes. Under visible light, these aerogelsshow significantly enhanced catalytic performance, highlighting theirpromise for photothermal catalysis. This citrate-based, chloride-freeroute broadens the range of accessible multicomponent aerogel compositionsfor diverse applications, particularly in the realm of (photo)­catalysisand optical materials.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 1","pages":"177–188"},"PeriodicalIF":9.1,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145999276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting the Mechanical Strength and Photocatalytic Activity of 3D-Printed Titania Aerogels by Atomic Layer Deposition and Heat Treatment","authors":"Malte M. Schmidt,&nbsp;Tjark L. R. Gröne,&nbsp;Robert Zierold,&nbsp;Diego Ribas Gomes,&nbsp;Sandra König,&nbsp;Michael Fröba,&nbsp;Kaline P. Furlan,&nbsp;Dorota Koziej","doi":"10.1021/acsmaterialsau.5c00162","DOIUrl":"10.1021/acsmaterialsau.5c00162","url":null,"abstract":"<p>Titania aerogelsare highly porous materials optimalfor photocatalysisdue to their high surface area. Further spatial structuring by 3Dprinting improves gas diffusion in the aerogel, leading to a higherphotocatalytic activity. However, the aerogel’s mechanicalproperties are reduced in comparison to non-3D printed aerogels. Wehereby present an approach based on atomic layer deposition (ALD)of subnanometer-thin TiO₂ layers to compensate for thatdetrimental effect. The ALD-deposited TiO₂ consists ofamorphous and anatase phase, with the anatase phase likely crystallizingon the aerogel’s crystallites. Nanoindentation measurementsconfirm that the TiO₂ ALD-coatings improve the aerogel’smechanical properties. Additionally, it enhances the photocatalyticproperties of the TiO₂ aerogel, which we attribute to theincreased interface area and improved interconnection of the nanoparticlenetwork. By further thermal postprocessing, it is possible to fullycrystallize the ALD-deposited TiO₂, which shows a complementaryeffect on photocatalytic performance, improving hydrogen evolutionrate by more than 1 order of magnitude from 6.35 to 125 μmolg^–1 h^–1. The combination of 3Dstructuring of aerogels with ALD coatings demonstrated in this workcould be extended in the future to a wide range of materials wherethe interplay between mechanical and catalytic properties is vital.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 1","pages":"213–221"},"PeriodicalIF":9.1,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145999255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}