{"title":"Selective-Area Growth of Large-Area Wurtzite InP Nanofin Arrays: Implications for Solid-State Lighting","authors":"Yuki Azuma*, , , Ziye Zheng, , , Junichi Motohisa, , and , Katsuhiro Tomioka*, ","doi":"10.1021/acsanm.5c02403","DOIUrl":"https://doi.org/10.1021/acsanm.5c02403","url":null,"abstract":"<p >We characterized the selective-area growth of wurtzite (WZ) InP nanofin structures toward the large-area growth of crystal phase transition materials. Two different mask opening shapes were used to characterize the growth behavior and crystal growth of the InP nanofins. The InP nanofins were successfully grown on an InP(111)A substrate with different opening designs. Each average nanofin height corresponded to a distinct saturation value. The saturated height of the fins depended on the adatom diffusion length on the side facets of the nanofins. Beyond the height saturation point, the fin width increased, and the fins coalesced with one another . Then, InP planar structure films, with the top layer in a zincblende (ZB) phase, were formed on the masked substrate. The growth behavior and mechanism of the WZ InP fins were applied to epitaxial lateral overgrowth (ELO) using a two-step growth process, and the WZ InP film, scaled to several tens of micrometers, was successfully formed.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18734–18739"},"PeriodicalIF":5.5,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jie Liu, , , Yu-Qing Zhang, , , Xiao Li, , , Tian-Yu Yang, , , Li Chen*, , and , Zheng Guo*,
{"title":"Porous ZnO Nanofibers Sensitized with Au Nanoclusters for Sensing BTX Gases","authors":"Jie Liu, , , Yu-Qing Zhang, , , Xiao Li, , , Tian-Yu Yang, , , Li Chen*, , and , Zheng Guo*, ","doi":"10.1021/acsanm.5c00856","DOIUrl":"https://doi.org/10.1021/acsanm.5c00856","url":null,"abstract":"<p >The detection of benzene, toluene, and <i>m</i>-xylene (BTX) using chemiresistive metal oxide sensors remains challenging, owing to their low chemical reactivity and stable structures. Compared to conventional noble metal nanoparticles, well-defined noble metal nanoclusters (NCs) exhibit superior catalytic activity, making them promising candidates to modify metal oxides as sensing materials for enhancing gas-sensing performance to BTX. In this study, we employed three thiolate-capped molecular Au NCs [Au<sub>25</sub>(SG)<sub>18</sub>, Au<sub>144</sub>(SR)<sub>60</sub>, and Au<sub>807</sub>(SG)<sub>163</sub>] with distinct core diameters as precursors. Through electrospinning, followed by thermal oxidation, Au NC-sensitized ZnO porous nanofibers were successfully fabricated. Gas-sensing evaluations revealed that Au NC-sensitized ZnO porous nanofibers exhibited significantly enhanced responses to BTX gases. Notably, Au<sub>25</sub> NC-sensitized ZnO porous nanofibers demonstrated the highest sensitivity, along with excellent stability and reproducibility. Additionally, a clear size-dependent sensing effect was observed, where the sensor response decreased as the Au NC size increased. The underlying mechanisms responsible for the enhanced sensing performance and size dependence were further discussed. This work provides a general strategy for developing noble metal NC-sensitized one-dimensional metal oxide porous nanofibers for high-performance gas-sensing applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18723–18733"},"PeriodicalIF":5.5,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Magnetic Macroporous Microspheres from FeCO3 via Water Vapor-Mediated Thermal Decomposition: Implications for Nanoparticle Capture and Biomedical Applications","authors":"Takahiro Kozawa*, , , Rito Fujiwara, , , Kayo Fukuyama, , , Kanako Yoshida, , , Soichiro Usuki, , , Masakazu Kawashita, , , Kota Hoshino, , , Satoshi Ota, , and , Hiroya Abe*, ","doi":"10.1021/acsanm.5c02980","DOIUrl":"https://doi.org/10.1021/acsanm.5c02980","url":null,"abstract":"<p >The thermal decomposition of inorganic salts is a simple method to synthesize porous oxides. However, nanopore blocking during particle growth hinders the formation of macropores (>50 nm). In this study, macroporous magnetite (Fe<sub>3</sub>O<sub>4</sub>) microspheres, composed of primary particles exceeding 500 nm in diameter, are synthesized via the thermal decomposition of FeCO<sub>3</sub> in the presence of water vapor. Under oxidizing (air) conditions, water vapor facilitates the formation of hematite (α-Fe<sub>2</sub>O<sub>3</sub>) with bicontinuous macroporosity. In a reducing atmosphere containing water vapor, FeCO<sub>3</sub> directly yields magnetite microspheres with open macropores (∼210 nm). Water vapor promotes nanoparticle bonding and growth at low temperatures, thereby facilitating spontaneous macropore formation. These structures allow efficient nanoparticle capture in solution and facile magnetic manipulation, as demonstrated by the successful capture of Au nanoparticles approximately 15 nm in size. Their excellent biocompatibility was confirmed through cytotoxicity assays. The developed macroporous magnetic architecture holds significant potential in biomedical applications, particularly for encapsulating and delivering tumor markers and antibody drugs─typically several tens of nanometers in size─for targeted therapeutic delivery.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18781–18789"},"PeriodicalIF":5.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Prateek Kumar Yadav, , , Sandeep Dahiya, , , Bhola Nath Pal, , , Amit Srivastava, , , Amritanshu Pandey, , and , S. K. Srivastava*,
{"title":"Solution-Processed ZnO/V2O5 Heterojunction Thin Films for UV Photodetectors","authors":"Prateek Kumar Yadav, , , Sandeep Dahiya, , , Bhola Nath Pal, , , Amit Srivastava, , , Amritanshu Pandey, , and , S. K. Srivastava*, ","doi":"10.1021/acsanm.5c04171","DOIUrl":"https://doi.org/10.1021/acsanm.5c04171","url":null,"abstract":"<p >This study delineates the fabrication and evaluation of a high-performing ultraviolet (UV) photodetector (PD) consisting of a ZnO/V<sub>2</sub>O<sub>5</sub> nanoparticle (NP) bilayer thin film deposited on a Si/SiO<sub>2</sub> substrate through spin coating. Various analytical techniques, such as X-ray diffraction, Raman spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy, have been employed to investigate the structural features and surface morphology of the as-prepared samples. The V<sub>2</sub>O<sub>5</sub> NPs were prepared through a facile one-pot solvothermal process, while ZnO NPs were obtained through a rapid sol–gel method. V<sub>2</sub>O<sub>5</sub> NPs demonstrate extended absorption with significant absorption in the range of 240–450 nm and exhibit a relatively smaller band gap. The optoelectronic features of as-deposited thin films have primarily been studied through <i>I</i>–<i>V</i> characteristics under dark and UV light conditions with the same external bias of 2 V, and the photocurrent has been found to be 9.13 × 10<sup>–5</sup> A/cm<sup>2</sup>, which is ∼2.77 × 10<sup>3</sup> times higher than the dark current. The obtained photocurrent-to-dark current ratio for the ZnO/V<sub>2</sub>O<sub>5</sub> device is nearly ∼1.37 × 10<sup>2</sup> times higher than that of the ZnO-only device. Moreover, this bilayer UV PD exhibits a detectivity (<i>D</i>) of ∼3.1 × 10<sup>12</sup> Jones, a spectral responsivity (<i>R</i>) of ∼4 A/W, and an external quantum efficiency (EQE) of ∼16% under an external potential of 10 V. Furthermore, the findings are analyzed, and an explanation of the detailed photodetection mechanism is outlined in this paper.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"19076–19084"},"PeriodicalIF":5.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lightweight Co@MXene/Cellulose-Derived Carbon Aerogel for Electromagnetic Shielding and Absorption Capacity","authors":"Lu Pei, , , Fang Ren*, , , Shengkui Yuan, , , Chunjie Li, , , Dandan Zhang, , , Yajie Liu, , , Jiale Zhang, , and , Penggang Ren*, ","doi":"10.1021/acsanm.5c03312","DOIUrl":"https://doi.org/10.1021/acsanm.5c03312","url":null,"abstract":"<p >Developing low-density and high-efficiency electromagnetic shielding material with a high absorption coefficient is of great importance. In this work, we successfully prepared a nanostructured Co@MXene/cellulose-derived carbon aerogel via a simple solution mixing–regeneration, freeze-drying, and pyrolysis process. By regulating the concentration of Co<sup>2+</sup>, the degree of its dispersion in the cellulose-derived carbon aerogel can be flexibly adjusted to improve the electromagnetic shielding performance. Thanks to the synergistic effect of the porous structure and electric/magnetic coupling loss, the synthesized carbon aerogel exhibits an absorption coefficient of 0.65 and a high electromagnetic interference (EMI) shielding efficiency (SE) of 40.4 dB when the thickness is 2 mm, which achieve both a high SE and an absorption-based shielding mechanism. It provides an effective method for designing high-performance EMI shielding materials with low reflection and strong absorption properties.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18905–18913"},"PeriodicalIF":5.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"In-Plane Aligned Colloidal Quantum Wells via Electrophoretic Deposition for Directional Emission","authors":"Chengxi Lyu, , , Chenlin Wang, , , Haixiao Zhao, , and , Yuan Gao*, ","doi":"10.1021/acsanm.5c03694","DOIUrl":"https://doi.org/10.1021/acsanm.5c03694","url":null,"abstract":"<p >Directional emission is highly desirable for a wide range of photonic and optoelectronic applications, such as displays, lasers, and optical communications. II–VI Colloidal quantum wells (CQWs, or nanoplatelets), owing to their anisotropic shape and strong quantum confinement, inherently support directional emission when properly aligned. Here, we demonstrate a reliable and convenient electrophoretic deposition method to achieve in-plane alignment of CQWs on substrates. This technique enables controlled placement of CQWs exclusively in electrode-defined regions, offering both spatial selectivity and emission directionality, which provides a scalable and straightforward route for integrating anisotropic quantum well emitters into optoelectronic device architectures.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18716–18722"},"PeriodicalIF":5.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wenting Kong*, , , Hao Jia, , , Yan Zhao, , and , Wen Xu,
{"title":"Durable Superhydrophobic Coating with Adjustable Superwettability for Oil–Water Separation","authors":"Wenting Kong*, , , Hao Jia, , , Yan Zhao, , and , Wen Xu, ","doi":"10.1021/acsanm.5c03198","DOIUrl":"https://doi.org/10.1021/acsanm.5c03198","url":null,"abstract":"<p >Smart membranes with adjustable superwettability are promising candidates for addressing complex challenges, such as treating oily domestic wastewater and industrial oil leakages. In this study, a durable superhydrophobic coating with switchable wettability was fabricated on a cotton fabric. The coated fabric exhibited a rapid transition to a superhydrophilic/underwater superoleophobic state via a “wetting-displacing” process, and can recover its original superhydrophobicity upon drying. The underwater–oil contact angle was further modulated by adjusting the ratio of the chemical components to the coating thickness. Inspired by the wettability pattern of the Stenocara beetle, an underwater superoleophobic/philic patterned fabric for efficient oi–water separation was developed. The influence of the wettability pattern geometry on the separation efficiency and flux was also investigated. The coated fabric was used to separate multiple types of oil/water mixtures with a separation efficiency of over 99%.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18817–18828"},"PeriodicalIF":5.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alba Arenas-Hernandez, , , Jose Luis Ortiz-Quiñonez, , and , Umapada Pal*,
{"title":"Acetaminophen Sensing Using NiFe2O4 Nanoparticle/Reduced Graphene Oxide Nanosheet Composites","authors":"Alba Arenas-Hernandez, , , Jose Luis Ortiz-Quiñonez, , and , Umapada Pal*, ","doi":"10.1021/acsanm.5c02981","DOIUrl":"https://doi.org/10.1021/acsanm.5c02981","url":null,"abstract":"<p >Graphene oxide (GO), an oxygen-rich, chemically reactive carbon nanomaterial, offers a versatile platform for catalytic and sensing applications. In this work, we report a high-performance electrochemical sensor for acetaminophen detection based on nickel ferrite (NiFe<sub>2</sub>O<sub>4</sub>) nanoparticles anchored onto partially reduced graphene oxide (rGO). GO was synthesized via the Tour method and partially reduced with ethylene glycol during hydrothermal treatment. Two sensor configurations were fabricated: one with pristine NiFe<sub>2</sub>O<sub>4</sub> nanoparticles and the other with a NiFe<sub>2</sub>O<sub>4</sub>/rGO nanocomposite. Scanning electron microscopy revealed that GO facilitates the formation of smaller, uniformly dispersed NiFe<sub>2</sub>O<sub>4</sub> nanoparticles on its surface. The N<sub>2</sub> adsorption–desorption isotherm confirmed a mesoporous structure with narrow slit-like pores, enhancing the surface area. Electrochemical impedance spectroscopy and differential pulse voltammetry analyses revealed that the incorporation of rGO significantly reduces the charge-transfer resistance from 167.5 Ω for pristine NiFe<sub>2</sub>O<sub>4</sub> to 121.7 Ω in the composite and increases the density of the electroactive sites. The NiFe<sub>2</sub>O<sub>4</sub>/rGO sensor exhibited an exchange current density of 365.9 μA/cm<sup>2</sup>, a sensitivity of 673.25 μA/cm<sup>2</sup>·mM, and a detection limit of 0.14 μM, representing improvements of nearly 2 orders of magnitude over the pristine NiFe<sub>2</sub>O<sub>4</sub> sensor. These enhancements have been attributed to the synergistic combination of the high redox activity of NiFe<sub>2</sub>O<sub>4</sub>, the nanoscale particle size, and the superior conductivity of rGO at the electrode–electrolyte interface.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18790–18805"},"PeriodicalIF":5.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsanm.5c02981","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jeongwon Kim, , , Hyun-Min Kim, , , Seungyong Shin, , , Yang-Hee Kim, , , Heesun Yang*, , and , Ho Seong Jang*,
{"title":"Sub-Nanometer ZnS Shell-Controlled Warm-to-Cool White Color-Tunable CuGaS2 Quantum Dots for White Light-Emitting Diodes","authors":"Jeongwon Kim, , , Hyun-Min Kim, , , Seungyong Shin, , , Yang-Hee Kim, , , Heesun Yang*, , and , Ho Seong Jang*, ","doi":"10.1021/acsanm.5c03289","DOIUrl":"https://doi.org/10.1021/acsanm.5c03289","url":null,"abstract":"<p >CuGaS<sub>2</sub> (CGS) quantum dots (QDs) have garnered significant attention as white light-emitting materials for lighting and display applications, especially owing to their white color emission characteristics, arising from their broad photoluminescence (PL) and multiple recombination centers. However, a synthetic strategy for balancing the charge carriers in multiluminescent centers remains unresolved. Herein, we report white light-emitting CGS/ZnS/ZnS/ZnS (CGS/3ZnS) QDs with a broad-band PL property, which exhibits dual internal band centers. We adopt ZnS shell engineering with sub-nanometer thickness growth to balance the carrier distributions of CGS defect states, enabling the precise tuning of wide PL spectral bands. Additionally, the relative intensities of two PL band centers are controlled by adjusting the shell formation temperature, thus enabling fine-tuning of warm and cool white light emission. A series of white light-emitting CGS/3ZnS QDs is applied as the emission layer of an electroluminescence device, which results in white light emission with a maximum luminance of 1,285 cd/m<sup>2</sup>, an external quantum efficiency of 1.72%, high color rendering indices from 87 to 92, and highly tunable correlated color temperatures ranging from 5,900 to 18,200 K. This achievement provides guidance for the development of emerging white light sources.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18897–18904"},"PeriodicalIF":5.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Piyali Chatterjee*, , , Daniel Piecha, , , Mateusz Szczerba, , , Olga Chernyayeva, , , Łukasz Gondek, , , Tomasz Uchacz, , and , Grzegorz D. Sulka*,
{"title":"Stable Solar Water Splitting Enabled in Anodic W/WO3 Nanorod Based Electrodes by Hydrothermal Engineering","authors":"Piyali Chatterjee*, , , Daniel Piecha, , , Mateusz Szczerba, , , Olga Chernyayeva, , , Łukasz Gondek, , , Tomasz Uchacz, , and , Grzegorz D. Sulka*, ","doi":"10.1021/acsanm.5c03456","DOIUrl":"https://doi.org/10.1021/acsanm.5c03456","url":null,"abstract":"<p >The stability of WO<sub>3</sub> photoelectrodes in neutral media remains a significant challenge, particularly for those fabricated by anodic W oxidation. We report a simple, one-step hydrothermal treatment that transforms porous anodic WO<sub>3</sub> into nanorods with a dispersed FeWO<sub>4</sub> phase. This morphological evolution combines the advantages of high-aspect-ratio structures for improved light absorption with reduced charge recombination losses. The treatment also promotes preferential WO<sub>3</sub> growth along the monoclinic (002) plane─known to favor water splitting. The modified electrodes exhibited considerable photoluminescence quenching, significantly enhanced charge separation efficiency, and higher photon-to-current conversion, resulting in a photocurrent density that was ∼1.8 times higher at 1.0 V vs RHE. Additionally, oxygen vacancy formation during operation likely contributes to charge redistribution, mitigating surface degradation in sodium sulfate and enabling rapid stabilization of the photocurrent over several hours. Electrochemical impedance spectroscopy reveals evidence of p–n heterojunction due to integration of the tungstate phase with WO<sub>3</sub>, extended charge carrier lifetimes, and enhanced charge transfer. This scalable surface engineering approach offers a promising route to enhance the performance and durability of anodic WO<sub>3</sub> for practical solar-driven water oxidation.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18990–19000"},"PeriodicalIF":5.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsanm.5c03456","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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