ACS Omega最新文献

{"title":"New Method to Form Colloidal Gold: Spontaneous Transformation from Nanoporous Anodic Gold Oxide Film into Gold Nanoparticles in Pure Water","authors":"Takashi Fujita,&nbsp;Tomoya Tsuboi,&nbsp;Shota Kawai,&nbsp;Ryusei Harada,&nbsp;Rikiya Tokumitsu,&nbsp;Kazuyuki Nishio","doi":"10.1021/acsomega.6c05196","DOIUrl":"https://doi.org/10.1021/acsomega.6c05196","url":null,"abstract":"<p>Gold nanoparticles(Au NPs) exhibit strong localizedsurface plasmonresonance (LSPR) and have applications in biosensing, optical devices,and conductive materials. The conventional chemical synthesis of AuNPs relies on the dissolution of gold salts such as HAuCl₄ and reductants followed by the reduction of gold ions, which posesafety, environmental, and scalability challenges. In this study,we present a new route to obtaining colloidal gold: the formationof a nanoporous gold oxide film by gold anodization in an aqueouscitric acid solution and the immersion of the film in pure water.UV–vis spectra show the emergence of LSPR at around 525–530nm for the anodized film immersed in pure water for ∼3 daysat 25 °C. Dynamic light scattering measurements indicate thatthe mean hydrodynamic diameter does not increase with LSPR intensityfor the film immersed for 60 days. The nearly constant hydrodynamicdiameter despite increasing LSPR extinction is consistent with thecontinued formation or release of similarly sized particles. SEM observationsrevealed that when an anodic gold oxide film is kept immersed in water,Au NPs with a diameter of ∼20 nm emerge in the film simultaneouslywith the dispersion of colloidal gold in water. The data obtainedsuggest the formation of colloidal gold through the spontaneous morphologicaltransformation of the nanoporous film to NPs during the reductionof gold oxide in water with the assistance of organic matter fromcitrate. The proposed method is operationally simple and potentiallyscalable and avoids the use of HAuCl₄ and added strongreductants.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62985–62990"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222063","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":"Formulation, Nutritional Evaluation, and Storage Stability of Functional Nutri-Cereal and Chicken Powder-Based Biscuits for Companion Pet Nutrition","authors":"Samiksha Sharma,&nbsp;Pushpanjali Purohit,&nbsp;Pankaj Gautam,&nbsp;Bhupendra M. Ghodki,&nbsp;Krishna Aayush,&nbsp;Sumit Jadaun,&nbsp;Ankita Dobhal,&nbsp;Sanjay Kumar,&nbsp;Afzal Hussain","doi":"10.1021/acsomega.6c03752","DOIUrl":"https://doi.org/10.1021/acsomega.6c03752","url":null,"abstract":"<p>This study developedgluten-free functional biscuits for companionpets using malted pearl millet flour, malted green gram flour, chickenpowder, egg white, and stevia. Five formulations (T1–T5) anda wheat flour control (C) were evaluated for proximate composition,physicochemical characteristics, antioxidant properties, fatty acidprofile, phenolic compounds, amino acid composition, and storage stability.Significant differences (<em>p</em> &lt; 0.05) were observedamong formulations for nutritional composition, color attributes,texture, total phenolic content (TPC), total flavonoid content (TFC),antioxidant activity, peroxide value, and free fatty acids. Basedon the overall nutritional, functional, and physicochemical characteristics,formulation T2 was selected as the optimum biscuit. UHPLC analysisidentified eight phenolic compounds in T2, with quercetin (2.148 mg/g)and sinapic acid (2.018 mg/g) as the predominant compounds. GC–MSanalysis revealed higher concentrations of beneficial fatty acidsin T2, while amino acid profiling demonstrated increased levels ofhistidine, threonine, methionine, cysteine, tryptophan, and isoleucinecompared with the control. During 56 days of storage in HDPE packaging,moisture, peroxide value, free fatty acids, and microbial counts increasedsignificantly (<em>p</em> &lt; 0.05), whereas T2 maintainedacceptable microbial quality (2.55 × 10² CFU/mL) throughoutstorage. These findings show that T2 is a nutritionally superior,shelf-stable functional biscuit with potential for companion pet nutrition.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62652–62666"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222066","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":"Enhancing the Surface Characteristics of Coal Gangue through Different Modification Methods and the Improvement of Saline-Alkali Soil","authors":"Chuanzhi Zhu,&nbsp;Yulong Zhong,&nbsp;Mengrui Huang,&nbsp;Chong Zhang,&nbsp;Jun Tang,&nbsp;Yongcai Zhang","doi":"10.1021/acsomega.6c01801","DOIUrl":"https://doi.org/10.1021/acsomega.6c01801","url":null,"abstract":"<p>Coal gangue exhibitsgreat application potential in saline-alkalisoil amelioration. However, natural coal gangue has a limited improvementeffect due to its small specific surface area and poor surface activity.In this study, different modification methods were employed to improvethe surface properties of coal gangue. Changes in the surface propertiesof modified coal gangue and their improvement effects in saline-alkalisoil were investigated by XRD, FTIR, SEM, static soil culture tests,and simulated leaching tests. Compared with original coal gangue,modified coal gangue shows significantly enhanced active components,in which the stable kaolinite is transformed into active Al₂O₃ and SiO₂ according to XRD analysis. In addition,the micropore structure of modified coal gangue has changed, showinga rougher surface, larger pore diameter and specific surface area.Especially for calcination-modified coal gangue, the specific surfacearea is greatly increased from 6.9 m²/g to 34.8 m²/g. The application of coal gangue modified by calcination, acidtreatment, and ball milling can effectively reduce the pH of saline-alkalisoil from 9.89 to 7.99, 8.40, and 8.74, respectively. Meanwhile, theirincorporation can reduce the exchangeable sodium content of saline-alkalisoil by 36.2%, 33.6%, and 40.7%, respectively. The addition of modifiedcoal gangue has a significant effect on reducing nutrient loss duringthe leaching of saline-alkali soil. When the amount of calcination-modifiedcoal gangue added reaches 30%, the loss of soil total nitrogen andtotal phosphorus can be reduced by 94% and 90%, respectively. Theresults demonstrate that modified coal gangue, owing to its increasedactive components and surface sites, can not only reduce the pH andexchangeable sodium content of saline-alkali soil, but also effectivelymitigate nutrient leaching losses. In comparison, calcination is themost effective modification method, and a 30% addition rate is sufficientto achieve a desirable amelioration effect on saline-alkali soil.This study provides methodological and theoretical foundations forenhancing the potential of coal gangue in saline-alkali soil improvement,which is of great significance for the resource utilization of coalgangue and the improvement of cultivated land quality.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62517–62532"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222068","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":"Machine Learning in Amyloidogenic Polypeptide Research: From Sequence Prediction to Drug Discovery","authors":"Guocheng Zhang,&nbsp;Hairui Li,&nbsp;Xudong Zhen,&nbsp;Yang Liu,&nbsp;Libin Huang","doi":"10.1021/acsomega.6c06653","DOIUrl":"https://doi.org/10.1021/acsomega.6c06653","url":null,"abstract":"<p>Over the past decade, machine learning (ML) has establisheda transformativeparadigm for investigating amyloidogenic polypeptides. Characterizedby their propensity to form ordered, β-sheet-rich fibrillaraggregates, these polypeptides are centrally implicated in the pathogenesisof numerous neurodegenerative diseases, including Alzheimer’sdisease (AD) and Parkinson’s disease (PD). This review systematicallyevaluates the application of ML across critical domains of amyloidinvestigation: sequence-based amyloidogenicity prediction, structuralbiology, inhibitor design, and amyloid-related clinical objectives.We further summarize the diverse array of ML architectures currentlyemployed in amyloid research, spanning classical algorithms (e.g.,support vector machines and random forests) to advanced deep learningframeworks, such as the transformer framework, protein language models(PLMs), etc. Additionally, we spotlight emerging frontiers, namely,the integration of ML with molecular dynamics (MD) simulations, theuse of generative AI for <em>de novo</em> inhibitor design,etc., while addressing persistent bottlenecks in the field, includingdata standardization, model interpretability, and rigorous experimentalvalidation for <em>in silico</em> predictions. Ultimately,this review serves as a foundational roadmap for emerging researchersand a definitive reference for established investigators operatingat the intersection of artificial intelligence and amyloid biology.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62296–62309"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221940","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":"Comparative Evaluation of the Antitumor Effect of Rosmarinic Acid and Nordihydroguaiaretic Acid in Osteosarcoma Cells","authors":"Flavia G. Iano,&nbsp;Adriano S. Pessôa,&nbsp;Mariana L. R. Sanches,&nbsp;Cíntia C. Tokuhara,&nbsp;Maiara S. B. Caires,&nbsp;Rodrigo C. Oliveira,&nbsp;Valdecir F. Ximenes","doi":"10.1021/acsomega.6c05639","DOIUrl":"https://doi.org/10.1021/acsomega.6c05639","url":null,"abstract":"<p>Osteosarcoma is themost common type of bone cancer and is knownfor its high likelihood of metastasis. Rosmarinic acid (RA) and nordihydroguaiareticacid (NDGA) are plant polyphenols that offer promising health benefits.From a molecular structure point of view, RA and NDGA are quite similar,but one difference stands out: hydrophobicity. Based on this feature,this work aimed to compare RA and NDGA in a panel of antioxidant assaysand as cytotoxic and antiproliferative agents, inhibitors of cellmigration, and inducers of intracellular reactive oxygen species (ROS)production in murine osteosarcoma cells (UMR-106) and preosteoblasticcells (MC3T3-E1). Our comparative study establishes that NDGA exertsmarkedly stronger cytotoxic, antiproliferative, and antimigratoryeffects than RA in osteosarcoma UMR-106 cells, associated with greaterintracellular oxidative activity and disruption of redox homeostasis.While RA retains significant antioxidant activity and minimal cytotoxicitytoward differentiated MC3T3-E1 osteoblastic cells, its comparativelylow cytotoxicity in the present model suggests a more limited therapeuticeffect than NDGA under the conditions tested. NDGA emerges as a potentexperimental candidate for further investigation in osteosarcoma,although its translational potential remains limited by concerns regardingsystemic toxicity and the need for validation in human osteosarcomamodels. Future studies should aim to optimize NDGA delivery and selectivity,elucidate the molecular pathways involved, and explore synergisticcombinations with standard therapies. Ultimately, the divergent activitiesof RA and NDGA underscore the importance of structural and physicochemicaldeterminants in dictating the therapeutic potential of plant polyphenolsagainst osteosarcoma.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63046–63058"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221943","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":"α-Lipoic Acid and Deferoxamine Restore Redox–Metallomic Homeostasis in Dapsone Toxicity: Integrated Biochemical, Histological, and Molecular Modeling Evidence","authors":"Rana Karen Mesquita da Silva,&nbsp;Amanda Caroline dos Santos Monteiro,&nbsp;Sara Kerolim Figueiredo Freitas,&nbsp;Ana Paula Holanda Santana,&nbsp;Kelly Davis,&nbsp;Wenddy Graziela Neves Lima,&nbsp;Pamela Suelen da Silva Seabra,&nbsp;Daniele Ferreira Sodré,&nbsp;Cristine Bastos do Amarante,&nbsp;Agnaldo da Silva Carneiro,&nbsp;Alessandro Quaresma Durães de Sousa,&nbsp;Savio Monteiro dos Santos,&nbsp;Antônio Rafael Quadros Gomes,&nbsp;Bruno Alexandre Quadros Gomes,&nbsp;Roseane Guimarães Ferreira,&nbsp;Marta Chagas Monteiro","doi":"10.1021/acsomega.6c03045","DOIUrl":"https://doi.org/10.1021/acsomega.6c03045","url":null,"abstract":"<p>Dapsone (DDS), asulfone antibiotic widely used in the treatmentof leprosy and autoimmune diseases, is associated with hematotoxicityand hepatotoxicity due to its metabolic conversion into hydroxylaminederivatives that promote methemoglobinemia, iron dysregulation, oxidativestress, and tissue injury. In addition to CYP-mediated bioactivation,DDS may contribute to lysosomal stress-associated iron imbalance andoxidative propagation. Conventional antioxidants or iron-chelatingtherapies alone may provide only partial protection against theseinterconnected mechanisms. This study evaluated the protective effectsof α-lipoic acid (ALA) and deferoxamine (DFO), administeredindividually or in combination, against DDS-induced oxidative andhematological disturbances using integrated <em>in vivo</em> and <em>in silico</em> approaches. Male Swiss mice receivedDDS (40 mg/kg, gavage) for 5 days, followed by treatment with ALA(25 mg/kg, gavage), DFO (40 mg/kg, i.p.), or their combination foran additional 5 days. Methemoglobin (MetHb), reduced glutathione (GSH),nitric oxide (NO), malondialdehyde (MDA), and plasma iron levels wereevaluated. Histopathological analysis and molecular docking studiesinvolving cytochrome P450 isoforms (CYP2C9, CYP2C19, CYP3A4, and CYP2E1)and hemoglobin were performed to investigate potential mechanismsunderlying DDS-induced toxicity and the protective effects of ALAand DFO. DDS markedly increased MetHb, nitric oxide, malondialdehyde,and plasma iron levels, accompanied by depletion of GSH and hepatocellulardegeneration. ALA and DFO individually attenuated oxidative and iron-relateddisturbances, whereas combined treatment effectively reduced methemoglobinformation and preserved hepatic architecture; however, plasma ferriciron levels remained comparable to those in DDS-treated animals. Moleculardocking suggested preferential interactions of DDS with CYP2E1 andCYP3A4, supporting the biological plausibility of their involvementin oxidative bioactivation pathways, whereas DFO showed predictedinteractions with CYP2C9, CYP2E1, and hemoglobin-associated iron sites.Collectively, these findings indicate that ALA and DFO each attenuateDDS-induced hepatotoxicity and hematotoxicity through distinct butcomplementary antioxidant, iron-chelating, and redox-modulating mechanisms.Combined treatment effectively improved selected endpoints, includingmethemoglobin formation and hepatic architecture, although its protectiveeffects were endpoint-dependent. The molecular modeling results providesupportive mechanistic insights and should be interpreted as hypothesis-generatingevidence complementary to the in vivo findings.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62581–62591"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221909","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":"Influence of Fiber Diameter and Surface Structure of Polycaprolactone Nanofibrous Materials on Yeast Retention and Biofilm Formation","authors":"Marta Stindlova,&nbsp;Eva Kuzelova Kostakova,&nbsp;Vera Jencova,&nbsp;Kristyna Havlickova,&nbsp;Vaclav Peroutka,&nbsp;Kamila Zdenkova,&nbsp;Ema Chudobova,&nbsp;Jana Stepanova,&nbsp;David Lukas,&nbsp;Simona Peroutkova","doi":"10.1021/acsomega.6c07770","DOIUrl":"https://doi.org/10.1021/acsomega.6c07770","url":null,"abstract":"<p>Understanding howmicroorganisms interact with nanofibrousmaterials(NMs) is essential for designing functional surfaces, yet morphology–yeastinteractions remain far less studied than bacterial systems. Here,we investigated how fiber diameter and secondary surface structuringof poly-ε-caprolactone (PCL) NMs affect yeast retention, adhesion,biofilm development, and cell transfer. Five PCL NMs were preparedfrom two PCL molecular weights (PCL45, PCL80) as smooth fibers andas structured fibers generated by two distinct post-processing routes:polymer-spray-induced texturing (PCL45_80, PCL80_80) and enzymaticsurface restructuring (PCL80_E). Interactions with model yeasts (<em>Candida albicans</em> ATCC 10231 and ATCC 90028; <em>Saccharomyces cerevisiae</em> ATCC 9763 and CCM 8381) were assessed by retention,biofilm biomass and metabolic activity during static growth (2 h,24 h, 72 h), and SEM imaging; cell transfer from colonized agar toNMs was measured using an adapted agar-mesh assay. All tested PCLNMs exhibited high retention (84.7–100%), regardless of fiberdiameter or secondary structures. Material-dependent differences weremost pronounced during early adhesion, whereas biofilm formed on allNMs and its biomass was strongly strain-specific. Overall, NMs withlarger fiber diameter (PCL80 series) supported denser yeast colonizationthan PCL45, while the secondary structures used here did not conferantifungal activity nor enhance biofilm formation. For cell transfer,PCL45_80 exhibited the highest attachment potential, yet ∼50% of cells remained on the donor surface. Collectively, these resultsshow that PCL nanofiber morphology modulates yeast–surfaceinteractions primarily by tuning early attachment and colonizationcapacity.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63692–63706"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221981","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":"Enterococcus faecium E297 in the Diet of Chickens: Effects on Zootechnical Performance, Animal Health and Meat Quality","authors":"Mariane Ficagna Bertotti,&nbsp;Maiara Marchiori,&nbsp;Paulo Vinicius de Oliveira,&nbsp;Alexandra Melissa Goncalves de Carvalho,&nbsp;Stéfani Mallmann,&nbsp;Tais Nunzio Muller,&nbsp;Gabriel Danieli,&nbsp;Júnior Mendes Furlan,&nbsp;Roger Wagner,&nbsp;Ricardo Evandro Mendes,&nbsp;Marcel Manente Boiago,&nbsp;Louise Haubert,&nbsp;Aleksandro Schafer Da Silva,&nbsp;Liziane Schittler Moroni","doi":"10.1021/acsomega.6c02805","DOIUrl":"https://doi.org/10.1021/acsomega.6c02805","url":null,"abstract":"<p>This study evaluated the potential of <em>Enterococcus faecium</em> E297 as a functional dietary supplement for broilerchickens, assessingits effects on zootechnical performance, immune response, and meatquality. A total of 224 chicks were allocated to four treatments:a control diet, a diet containing an antibiotic growth promoter, adiet supplemented with <em>E. faecium</em> E297, and a commercialprobiotic diet. Probiotic supplementation improved feed conversionand weight gain and increased leukocyte counts compared with the controlgroup. Birds fed <em>E. faecium</em> E297 showed a highervillus-to-crypt ratio, suggesting greater nutrient absorption efficiency.Meat from probiotic-supplemented groups exhibited lower fat contentand higher protein levels. No significant differences (<em>P</em> &gt; 0.05) were observed in microbial counts of the litter, cloaca,or feces throughout the experimental period. The results indicatethat <em>E. faecium</em> E297 has potential as an effectiveprobiotic alternative to antibiotic growth promoters in poultry production.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62572–62580"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221861","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":"Plateau–Rayleigh Instability–Driven Shell-First Growth of (Ge, Si1–xGex)–AlN Core–Shell Crystals Exhibiting Telecom E-Band Photoluminescence","authors":"Sunghoon Choi,&nbsp;Kyoung Hwa Kim,&nbsp;Won Joon Bong,&nbsp;Jun-Seok Park,&nbsp;Eunmin Kwon,&nbsp;Sohee Kim,&nbsp;Myungjun Kim,&nbsp;Donghyeon Jeong,&nbsp;Jae Hak Lee,&nbsp;Takeshi Kato,&nbsp;Yoshio Honda,&nbsp;Anna Honda,&nbsp;Hyung Soo Ahn","doi":"10.1021/acsomega.6c06175","DOIUrl":"https://doi.org/10.1021/acsomega.6c06175","url":null,"abstract":"<p>Si and Ge are technologically important semiconductorsfor electronic,photovoltaic, and optoelectronic applications. Herein, we report mixed-sourcehydride vapor phase epitaxial growth of (Ge, Si_{1–<em>x</em>}Ge_<em>x</em>)–AlN core–shellcrystals on Al-based nanoabsorbers. Nano-CT and microscopy resolvehollow, partially filled, and filled morphologies that together supporta Plateau–Rayleigh-instability-mediated shell-first model inwhich an Al-derived shell-like structure precedes filling by Ge-containingor Si–Ge-containing material. Electron microscopy, energy-dispersiveX-ray spectroscopy, and Raman measurements provide complementary structuraland compositional context, including local observations consistentwith 2H-like Si domains. Four room-temperature photoluminescence spectrarecorded under 532 nm excitation show telecom E-band features withsampled maxima at approximately 1371.9, 1377.0, 1381.1, and 1391.8nm. Additional archived nominal-setting records for four spectralwindows are presented as qualitative excitation-setting comparisons.Audited HSE Δ-self-consistent-field end points and PBE scalingcalculations evaluate neutral C_Si–O_i asa candidate model, while newly added formation, association, k-point,and cell-size sensitivity tests define the scope of that comparison.The optical data are therefore reported without a peak-specific microscopicor single-emitter assignment. The combined results establish the shell-firstgrowth morphology and document room-temperature E-band photoluminescencein group-IV/III-nitride core–shell material.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63138–63150"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221935","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":"Benchmarking Faradaic Efficiency and O2 Quantification during Water Oxidation under Mild Conditions Using a 3D-Printed Cell and Clark Electrode","authors":"Nycolas S. Galdino,&nbsp;Nishta Nagpal,&nbsp;Isabelle C. S. Chaves,&nbsp;Guida H. M. Nascimento,&nbsp;William R. de Araujo,&nbsp;Juliano A. Bonacin","doi":"10.1021/acsomega.5c13636","DOIUrl":"https://doi.org/10.1021/acsomega.5c13636","url":null,"abstract":"<p>Producing green hydrogen via water electrolysis offersa potentialpathway for achieving a sustainable energy transition. Despite itspotential, it is limited by the sluggish kinetics of OER, which motivatesthe development of efficient catalysts. In addition, the field stilllacks standardized and reproducible approaches for evaluating catalystfaradaic efficiency (FE) and monitoring the oxygen production. Therefore,we present a 3D-printed electrochemical cell coupled with a Clarksensor for <em>in situ</em> oxygen quantification during OER,while measurement uncertainties were examined to confirm the precisionand reproducibility of the methodology. The effects of electrolyteconcentration (0.1, 0.5, and 1.0 mol L^–1 KNO₃), different electrolytes (KNO₃ and PBS), electrodesurface area (0.071 and 0.195 cm²), and applied constantcurrent (1, 5, and 10 mA) were investigated. Statistical validationdemonstrated high reproducibility and robustness. At 10 mA in 0.1mol L^–1 KNO₃ using a 0.071 cm² electrode area, Pt exhibited higher oxygen evolution and FE (4.55± 0.5 mg L^–1, 85.6 ± 10.8%) than GC (2.32± 0.3 mg L^–1, 43.6 ± 6.1%). The methodologywas subsequently applied to Prussian blue (FePBA), and its respectivecobalt and nickel Prussian blue analogues (CoPBA and NiPBA, respectively).Among the investigated materials, NiPBA exhibited the highest OERactivity (0.40 ± 0.03 mg L^–1 with 76.5 ±5.7% FE), and was comparable to CoPBA, while both outperformed FePBAat 1 mA. A trend in the NOP was observed among the PBAs, followingthe order NiPBA ≥ CoPBA &gt; FePBA. This approach providesa reproducibleplatform for dissolved oxygen quantification and the standardizedbenchmarking of OER electrocatalysts.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62424–62431"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221944","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}