ACS Materials Au最新文献

DNA/RNA Hybrid Hairpin Gold Nanobeacons Targeting miR-31 Reprogram Invasion in Lung Cancer and Remodel Tumor Histo-Architecture In Vivo DNA/RNA杂交发夹金纳米信标靶向miR-31重编程侵袭肺癌并在体内重塑肿瘤组织结构

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-04-07 DOI: 10.1021/acsmaterialsau.5c00231

Diana P. Sousa, Jhenifer Oliveira, Catarina F. Martins, João Conde

{"title":"DNA/RNA Hybrid Hairpin Gold Nanobeacons Targeting miR-31 Reprogram Invasion in Lung Cancer and Remodel Tumor Histo-Architecture In Vivo","authors":"Diana P. Sousa, Jhenifer Oliveira, Catarina F. Martins, João Conde","doi":"10.1021/acsmaterialsau.5c00231","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.5c00231","url":null,"abstract":"Readout-enabled delivery of anti-microRNA (miRNA) therapeuticsremains a bottleneck for translating RNA nanomedicine against invasionand metastasis. We report ∼60 nm PEG-gold nanobeacons bearinga Cy3-labeled anti-miR-31-5p hairpin and establish a chemistry-to-phenotypepipeline spanning physicochemical control, cellular trafficking, functionalphenotyping, miR-31 kinetics, transcriptomics, and histology-only in vivo analysis. The formulation exhibits invariant plasmonics,stepwise growth in hydrodynamic diameter with low dispersity, andmoderated ζ-potential, confirming a stable, readout-enabledarchitecture. In lung cancer cells with high endogenous miR-31, nanobeaconsare efficiently internalized, traffic predominantly to lysosomes,and selectively suppress 3D invasion at 10–20 nM while leaving2D migration and viability unchanged. A low-miR-31 cell line showsminimal response, supporting target dependence. Time-course qRT-PCRreveals a delayed decrease in mature miR-31 (120–144 h) consistentwith a two-phase mechanism: early functional sequestration by a minoritycytosolic fraction followed by transcriptional down-tuning. Bulk RNA-seqat 72 h captures early remodeling of adhesion/ECM, integrin/TGF-β/WNT,and cytokine programs with directionality consistent with derepressionof the miR-31 regulon. In xenografts locally exposed to nanobeacons,histology shows intratumoral Cy3-positive clusters, innate-immune-likeinfiltrates, focal reductions in Ki-67,fibrotic stroma, increased necrosis and inflammation, spatial evidenceof local microenvironment remodeling without invoking tumor-size endpoints. Together, these results link precise materials design to atarget-engaged, noncytotoxic anti-invasive outcome and define actionablelevers, especially enhanced endosomal escape and pathway-level validation,to advance readout-enabled miRNA nanotherapeutics toward translation.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"1046–1063"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148923730","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}

引用次数: 0

Innovative Hydrogels: A Novel Approach to Tackle Obesity and Its Associated Health Risks 创新水凝胶：解决肥胖及其相关健康风险的新方法

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-06-12 DOI: 10.1021/acsmaterialsau.6c00045

Laura Catalina Duque-Ossa, Ariadna Alonso-Juarez, Isabella Ulloa-Garcia, Karla Mayolo-Deloisa

{"title":"Innovative Hydrogels: A Novel Approach to Tackle Obesity and Its Associated Health Risks","authors":"Laura Catalina Duque-Ossa, Ariadna Alonso-Juarez, Isabella Ulloa-Garcia, Karla Mayolo-Deloisa","doi":"10.1021/acsmaterialsau.6c00045","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.6c00045","url":null,"abstract":"Obesity, considered a chronic and multifactorial disease,is oneof the most urgent public health challenges, affecting about 13% ofthe global population. It is strongly associated with comorbiditiessuch as type 2 diabetes, hypertension, cardiovascular disease, andcertain types of cancer. Conventional management strategies, includinglifestyle interventions, pharmacotherapy, and bariatric surgery, oftenprovide limited or short-term benefits that encompass adverse effectsor poor adherence depending on the patients’ response. Hence,there is a need for innovative and minimally invasive treatments.In this context, hydrogels have emerged as promising and versatileplatforms. Hydrogels are biocompatible three-dimensional polymericnetworks that absorb and retain large amounts of water inside theirstructure. They can be engineered as stimuli-responsive materialsin response to environmental changes, including pH, temperature, andenzymes. These capabilities position hydrogels as malleable toolsapplicable across several obesity-related fields, ranging from controlleddrug delivery and gastric volume modulation to the development ofnontoxic ingestible systems. Recent advances highlight superabsorbenthydrogels that expand in the stomach to induce satiety; targeted hydrogelsthat deliver antiobesogenic compounds; and smart hydrogels that integratenanomaterials to enhance mechanical strength and functionality. Thisreview summarizes the classification of hydrogels, fabrication processes,and principal characteristics required in the biomedical field. Thecurrent evidence for hydrogel development as a basis for obesity managementis analyzed, focusing on the main results from preclinical and clinicaltrials. Finally, hydrogels are highlighted as multifunctional andtransformative platforms that offer new strategies to overcome thelimitations and drawbacks of current obesity treatment therapies.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"939–955"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148923937","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}

引用次数: 0

Liquid-Assisted Redox Synthesis Enables High-Yield Metastable Tetragonal Spinel Oxides 液体辅助氧化还原合成实现高产亚稳态四方尖晶石氧化物

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-07-22 DOI: 10.1021/acsmaterialsau.6c00107

Yanita Devi, Chun-Hu Chen

{"title":"Liquid-Assisted Redox Synthesis Enables High-Yield Metastable Tetragonal Spinel Oxides","authors":"Yanita Devi, Chun-Hu Chen","doi":"10.1021/acsmaterialsau.6c00107","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.6c00107","url":null,"abstract":"Controlling phaseselectivity for especially metastablemultimetaloxides remains a central challenge, even though they are attractivefor catalysis and energy conversion applications. The conventionalsynthesis method, like aqueous redox-precipitation, typically usesdilute reactant solutions, in which thermodynamic equilibrium favorsstable products, limiting the selective synthesis of metastable phases.Here, we demonstrate a water-assisted reaction that plays a dual anddecisive role in liquid-assisted redox synthesis (LRS) to obtaina metastable tetragonal cobalt–manganese spinel (CMO), ratherthan the readily formed cubic spinel. Limited initial hydration (0.5–1.5mL) creates a highly concentrated microenvironment that enhances localacidity and shifts redox toward Mn3+ formation rather thanMn4+. Dehydration at 160 °C enables the incorporationof unstable Mn3+ into the solid lattice, resulting in highselectivity and phase purity toward the metastable tetragonal spinel.A low liquid-to-solid ratio (η = 0.27–0.81 μL mg–1) coupled with elevated dehydration temperatures (upto 200 °C) enabled the selective formation of metastable tetragonalspinel. Increasing the initial water content (≥3.0 mL) withoutcomplete water dehydration further restores bulk-solution-like behavior,promotes Mn3+/Mn4+ equilibration, and yieldsthe thermodynamic cubic spinel. The optimized condition delivers 88%yield (∼27× higher than conventional aqueous ARP, 3.2%),and the tetragonal phase exhibits enhanced alkaline (oxygen evolutionreaction) OER activity relative to the cubic analog.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"1162–1171"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915836","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}

引用次数: 0

Data-Efficient Machine Learning for Predicting Dopant Formation Energies in TiO2 Monolayer 数据高效机器学习预测TiO2单层中掺杂物形成能

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-06-18 DOI: 10.1021/acsmaterialsau.6c00046

Kati Asikainen, Matti Alatalo, Marko Huttula, Assa Aravindh Sasikala Devi

{"title":"Data-Efficient Machine Learning for Predicting Dopant Formation Energies in TiO2 Monolayer","authors":"Kati Asikainen, Matti Alatalo, Marko Huttula, Assa Aravindh Sasikala Devi","doi":"10.1021/acsmaterialsau.6c00046","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.6c00046","url":null,"abstract":"Machine-learning models are increasingly applied in materialsscience,yet their predictive power is often constrained by data scarcity.Here we show that accurate predictions can be achieved even with alimited number of training examples, provided that the dataset iscompact and grounded in physically relevant quantities. By combiningdensity functional theory calculations with a machine learning framework,we constructed accurate descriptor-based models to predict the formationenergies of doped lepidocrocite TiO2 monolayers. The predictiveaccuracy of machine learning models was first evaluated for single-dopantPt configurations, demonstrating that the selected structural andelectronic descriptors reliably capture the key factors governingdopant stability. Chemical transferability was then examined by extendingthe dataset to include Ag-doped configurations. The predictive accuracyimproved systematically as additional Ag-doped data points were includedin the training set, while the performance of Pt remained robust.These results highlight the potential of small and well-curated datasetscombined with physically informed descriptors to enable not only accuratebut also chemically transferable machine-learning-driven screeningin doped TiO2 monolayers.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"1110–1120"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915797","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}

引用次数: 0

Hierarchical Epoxy Structures via Tunable Polymerization-Induced Phase Separation Combined with Additive Manufacturing 通过可调聚合诱导相分离与增材制造相结合的分层环氧结构

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-06-18 DOI: 10.1021/acsmaterialsau.5c00257

Kylie E. Van Meter, Lina N. Ghanbari, Michael J. Ford, Nathan R. Bays, Ryan D. Davis, Alina M. Martinez, Francesca C’deBaca, Alexandra M. Golobic, Brad H. Jones

{"title":"Hierarchical Epoxy Structures via Tunable Polymerization-Induced Phase Separation Combined with Additive Manufacturing","authors":"Kylie E. Van Meter, Lina N. Ghanbari, Michael J. Ford, Nathan R. Bays, Ryan D. Davis, Alina M. Martinez, Francesca C’deBaca, Alexandra M. Golobic, Brad H. Jones","doi":"10.1021/acsmaterialsau.5c00257","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.5c00257","url":null,"abstract":"Polymerization-induced phase separation (PIPS) allowsfor the controlof thermoset morphologies and properties, enabling the tuning of domainsizes and thermomechanical response. However, its use in generatingsubstructural features in additively manufactured materials has beenlimited. In this work, we combine epoxy PIPS with UV curable acrylateand rheological modifiers to print nano- to macro-phase separatingmaterials via a two-step, dual-cure approach. This method enablesdirect ink write printing of hierarchical structures with both controlledmorphologies through phase separation and macroscale architecturethrough print design. We find that formulations for phase-separatingmaterials require judicious incorporation of additives to enable printabilityand to provide sufficient green strength. Atomic force microscopy-nanoinfrared mapping reveals tunable, reticulated nano- to micron-scaledomains of the resultant multiphase materials and their morphologychanges due to additives, resulting in alterations to thermomechanicaland tensile properties. Shape memory behavior is also demonstratedthrough multimaterial additive manufacturing of epoxies with functionallygraded internal morphology using active mixing techniques, highlightingthis method’s ability to fabricate complex architectures withcontrolled morphologies and thermomechanical response.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"1064–1076"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915798","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}

引用次数: 0

Graphene-Based Catalytic Surfaces Decorated with Au and Cu Nanoparticles: A Model Approach toward e-Waste-Derived Catalysts 以金和铜纳米粒子修饰的石墨烯基催化表面：电子废物衍生催化剂的模型方法

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-07-20 DOI: 10.1021/acsmaterialsau.5c00221

Vittorio Scardaci, Stefano Boscarino, Luca Pulvirenti, Giusy Dativo, Francesco Ruffino, Guglielmo G. Condorelli, Salvatore Scirè, Roberto Fiorenza, Giuseppe Compagnini

{"title":"Graphene-Based Catalytic Surfaces Decorated with Au and Cu Nanoparticles: A Model Approach toward e-Waste-Derived Catalysts","authors":"Vittorio Scardaci, Stefano Boscarino, Luca Pulvirenti, Giusy Dativo, Francesco Ruffino, Guglielmo G. Condorelli, Salvatore Scirè, Roberto Fiorenza, Giuseppe Compagnini","doi":"10.1021/acsmaterialsau.5c00221","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.5c00221","url":null,"abstract":"The increasing demand for sustainable technologies andresourceefficiency is driving the development of materials that can both mitigateCO2 emissions and recover valuable metals from e-waste.In this work, we report a simple and environmentally friendly approachfor fabricating catalytic surfaces based on laser-reduced grapheneoxide (rGO) decorated with gold or copper nanoparticles (Au or CuNPs). The process involves laser reduction of graphene oxide, followedby immersion in aqueous Au3+ or Cu2+ model solutions,simulating metal leachate from an e-waste recovery process. Morphologicaland chemical analyses (SEM and XPS) confirm the formation of metallicnanoparticles. The resulting metal@rGO surfaces were tested for CO2 photothermo-catalytic conversion under simulated solar irradiation,achieving conversion efficiencies above 40%, with CO and CH4 as the main products. Both catalytic surfaces displayed comparableactivity and good stability over three consecutive cycles. This methodintegrates CO2 conversion with metal recycling, offeringa promising route toward circular catalytic materials.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"1019–1025"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915834","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}

引用次数: 0

Emergent d-Wave Altermagnetism in Orthogonally Twisted Bilayer CrPS4 正交扭曲双层CrPS4中的突发d波电磁

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-06-17 DOI: 10.1021/acsmaterialsau.6c00086

Alberto M. Ruiz, Diego López-Alcalá, Rafael González-Hernández, José J. Baldoví

{"title":"Emergent d-Wave Altermagnetism in Orthogonally Twisted Bilayer CrPS4","authors":"Alberto M. Ruiz, Diego López-Alcalá, Rafael González-Hernández, José J. Baldoví","doi":"10.1021/acsmaterialsau.6c00086","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.6c00086","url":null,"abstract":"Twistronics is apowerful strategy to engineer novelquantum statesby controlling the relative orientation between layered materials.Here, we demonstrate that an orthogonally twisted bilayer CrPS4 shows d-wave altermagnetism driven purelyby structural rotation. Symmetry analysis reveals that the 90°twisted stacking breaks the combined inversion and time-reversal symmetry,leading to an in-plane 2-fold rotation operation connecting oppositespin sublattices, enabling altermagnetism. First-principles calculationsdemonstrate a sizable nonrelativistic spin splitting of up to 68 meVaround the Fermi level. Additionally, we show that the altermagneticstate can be further stabilized through interlayer compression andmodulation of the on-site Coulomb interaction. The resulting bandstructure exhibits pronounced spin-dependent anisotropy, enablingefficient spin to charge conversion reaching ∼50% near theFermi level and sizable giant magnetoresistance. These results establishtwisted CrPS4 as a realistic platform for altermagnetismand highlight twistronics as a versatile route for advanced spintronicsapplications.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"1026–1032"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148923938","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}

引用次数: 0

Advances in Light-Driven Nanocrystal Assembly: From Two-Dimensional Patterning to Three-Dimensional Manufacturing 光驱动纳米晶组装的进展：从二维图形到三维制造

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-07-11 DOI: 10.1021/acsmaterialsau.6c00090

Jie Guan, Xinyan Zhang, Yuanyuan Wang

{"title":"Advances in Light-Driven Nanocrystal Assembly: From Two-Dimensional Patterning to Three-Dimensional Manufacturing","authors":"Jie Guan, Xinyan Zhang, Yuanyuan Wang","doi":"10.1021/acsmaterialsau.6c00090","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.6c00090","url":null,"abstract":"Colloidal nanocrystalsserve as a versatile platformfor solution-processedelectronics, optoelectronics, and photonics. While early efforts centeredon two-dimensional (2D) patterned films for planar devices, increasingdemands for integration density and multifunctionality are drivinga transition toward three-dimensional (3D) nanocrystal architectures.Light-driven assembly has emerged as a powerful, noninvasive approach,enabling remote activation, high spatial selectivity, and broad compatibilityacross nanocrystal compositions and surface chemistries. Recent advancesin photolithography and laser-based fabrication have bridged planarpatterning and volumetric construction. Here, we present a unifiedframework for light-driven nanocrystal assembly based on fundamentalenergy-transduction pathways, including photopolymerization, photoreduction,and photoinduced interparticle coupling. We discuss how these mechanismsgovern high-fidelity 2D patterning and enable emerging strategiesfor 3D structuring and manufacturing. Finally, we highlight key challengesand opportunities in achieving structural precision, functional integrity,multimaterial integration, and device-level implementation, and outlinefuture directions toward programmable nanocrystal-based manufacturing.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"974–993"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148923972","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}

引用次数: 0

Hydrogen Peroxide-Mediated Synthesis of Triphasic Titanium Dioxide: Impact of Phase Composition on PEC Water Oxidation Performance 过氧化氢催化合成三相二氧化钛：相组成对PEC水氧化性能的影响

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-07-29 DOI: 10.1021/acsmaterialsau.6c00104

Elsa Njeri, Ranjana Burman, Daniyal Saleem, Santiago T. Salamanca, Ange Vil, Chariot Burden, Isaac T. Olowookere, Steven L. Suib

{"title":"Hydrogen Peroxide-Mediated Synthesis of Triphasic Titanium Dioxide: Impact of Phase Composition on PEC Water Oxidation Performance","authors":"Elsa Njeri, Ranjana Burman, Daniyal Saleem, Santiago T. Salamanca, Ange Vil, Chariot Burden, Isaac T. Olowookere, Steven L. Suib","doi":"10.1021/acsmaterialsau.6c00104","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.6c00104","url":null,"abstract":"A series of triphasic TiO2 materials comprisinganatase,rutile, and brookite (A/R/B) were synthesized via a peroxide-mediatedinverse micelle route. The A/R/B ratios were systematically tunedby varying the concentration of hydrogen peroxide (H2O2). Control experiments conducted to isolate the specific roleof H2O2 as a phase-directing agent indicatethat a synergistic peroxide-acidic environment is required for theformation of triphasic TiO2. Photoelectrochemical (PEC)performance was evaluated using linear sweep voltammetry (LSV), appliedbias photon-to-current efficiency (ABPE), and transient photocurrentresponse. All the triphasic samples showed enhanced PEC performancecompared to pure-phase anatase. 7-HP-TiO2 exhibited thehighest ABPE and photocurrent density of 58 μA cm–2 at 1.23 V vs RHE and a peak ABPE of 0.046% at 0.37 VRHE among the series of materials tested. Photoluminescence spectroscopy(PL) and electrochemical impedance spectroscopy (EIS) were also employedto elucidate the influence of phase composition on charge separationand transfer efficiency. The enhanced activity of 7-HP-TiO2 was attributed to the synergistic effect of the A, R, and B phaseswithin the material. An optimal composition of 56% A, 9% R, and 35%B promotes efficient electron–hole separation and charge transferefficiency, thereby maximizing photocurrent density.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"1150–1161"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148923978","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}

引用次数: 0

Fluorination Anodization of n-Type Silicon in the Dark via Schottky-Driven Electron Extraction 利用肖特基驱动电子萃取法在黑暗中对n型硅进行氟化阳极氧化

IF 9.1

ACS Materials Au Pub Date : 2026-09-09 Epub Date: 2026-03-27 DOI: 10.1021/acsmaterialsau.6c00002

Benjamin Tien-Hsi Lee, Chao-Chia Cheng, Chun-Huang Wu, Lin Cheng, Yu-Sheng Chiou, Shu-Cheng Li, Wei-Chi Huang, Chao-Yuan Cheng, Yang-Chun Chiu, Chao-Ching Chiang

{"title":"Fluorination Anodization of n-Type Silicon in the Dark via Schottky-Driven Electron Extraction","authors":"Benjamin Tien-Hsi Lee, Chao-Chia Cheng, Chun-Huang Wu, Lin Cheng, Yu-Sheng Chiou, Shu-Cheng Li, Wei-Chi Huang, Chao-Yuan Cheng, Yang-Chun Chiu, Chao-Ching Chiang","doi":"10.1021/acsmaterialsau.6c00002","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.6c00002","url":null,"abstract":"The band structure of semiconductors governs electronexchange,rendering interfacial electron transfer both controllable and intrinsicallytime-integrated. Because electron transfer affects the formation andrupture of interatomic bonds, it constitutes the main driving forceof chemical and electrochemical reactions. Fluorination anodizationof n-type silicon in the dark is traditionally consideredimpossible because of the scarcity of the required species─holes.Here, we report that sufficiently sustained bias induces fluorinationanodization of n-type silicon in complete darknessunder standard electrochemical conditions. We attribute this phenomenonto the formation of a Schottky junction at the metal–semiconductorcontact. Continuous long-term electron extraction through this interfaceguides a dynamic charge reconstruction, resulting in hole accumulationand the creation of a provisional inversion layer. Moreover, to validatethis Schottky-driven mechanism, we designed a localized laser beamwith an irradiation diameter of 1 mm using three distinct wavelengths─correspondingto energies greater than, near, and less than the silicon bandgap─asa probed region during dark electrochemical processing. These experimentsreveal that the anodization reaction pathway is controlled by internalcarrier redistribution, i.e., self-doped holes. We introduce an “electric-fieldbudget” framework to quantify the cumulative effect of electrontransfer and bias duration on electrochemical kinetics. We reportthat electric-field-induced electron transfer in semiconductors─particularlyits time-integrated and cumulative potential dictated by the interfacialenergy barrier─enables chemical or electrochemical reactionseven without appropriate external excitation.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"6 5","pages":"1077–1086"},"PeriodicalIF":9.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148923940","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}

引用次数: 0