ACS Applied Nano Materials最新文献

{"title":"InAs Nanowires Elevated on Si(001) by Nanopedestals for CMOS-Compatible Fabrication","authors":"Seung-Chang Lee*,&nbsp;Yingbing Jiang and Steve R. J. Brueck,&nbsp;","doi":"10.1021/acsanm.5c0007110.1021/acsanm.5c00071","DOIUrl":"https://doi.org/10.1021/acsanm.5c00071https://doi.org/10.1021/acsanm.5c00071","url":null,"abstract":"<p >Catalyst-free, selective growth of InAs nanowires (NWs) elevated on a Si(001) substrate by (111)-faceted nanopedestals for CMOS compatibility is investigated with molecular beam epitaxy. It begins with processing the planar substrate surface into an array of three-dimensional (3D) Si core–SiO₂ shell nanostructures, where each Si core has a lateral dimension of ∼50 nm and a height of ∼300 nm, analogous to a vertical pillar. A side edge of every core tip is treated with dry/wet etching through the SiO₂ shell film to fabricate a deep nanometer-scale (∼10 nm in both width and height), (111)-faceted nanopedestal. This provides a selective nucleation site of InAs for a position- and direction-controlled ∼1.2 μm-long, ∼55-nm-wide NW, axially along Si[111] and radially over a nearby SiO₂ shell. Relieving the misfit strain by the local compliance and edge-induced relaxation associated with its shape and size, the nanopedestal enhances the critical thickness dramatically in 3D modeling and provides an NW that can accommodate mechanical and structural impacts in the postgrowth process for CMOS compatibility. The postgrowth manipulation for planar processing and high-density integration by bending and segmentation is addressed.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6445–6453 6445–6453"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767216","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":"SnO2 Nanospheres Coated with Pt or Pd as Electrode Materials for Detecting Hydrogen and Methane","authors":"Ang Li,&nbsp;Sikai Zhao*,&nbsp;Jinzhou Bai,&nbsp;Meili Wu,&nbsp;Shuling Gao,&nbsp;Yanbai Shen*,&nbsp;Zhenyu Yuan and Fanli Meng,&nbsp;","doi":"10.1021/acsanm.5c0052010.1021/acsanm.5c00520","DOIUrl":"https://doi.org/10.1021/acsanm.5c00520https://doi.org/10.1021/acsanm.5c00520","url":null,"abstract":"<p >In semiconducting metal oxide (SMO) gas sensing materials, the operating temperature provides the activation energy requisite for normal functioning while profoundly impacting the adsorption–desorption of gas molecules and the kinetics of sensing reactions. Current research primarily concentrates on enhancing gas sensor performance, aiming to increase sensor response, reduce operating temperature, and accelerate response and recovery speeds, yet it often neglects the impact of operating temperature variations on gas selectivity. This work employed photochemical deposition techniques to synthesize a series of M/SnO₂ (M = Pt, Pd) nanospheres with an approximate diameter of 400 nm, meticulously exploring their gas sensing properties for hydrogen (H₂) and methane (CH₄) across an operating temperature range of 250–500 °C. Microstructural examinations revealed that Pt/SnO₂ nanospheres featured an adjustable Pt-rich or Sn-rich PtSn alloy layer, along with controllable oxide species, while the surface of 5.0% Pd/SnO₂ nanospheres displayed nanoparticles consisting of both mixed-phase PdSn alloy and oxide phases, with size control spanning from 35.2 to 66.9 nm. Electronic and chemical sensitization, the activation energy of gas sensing reaction, as well as the chemical states and sizes of Pd and Pd species were integrated to explain the possible selective gas sensing mechanisms of SnO₂ nanospheres to H₂ and CH₄.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6679–6691 6679–6691"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767370","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":"Cu/CuOx Nanoparticles Encapsulated in Carbon as a Catalyst for Aqueous-Phase Reforming of Methanol","authors":"Dan Liu,&nbsp;Xujia Pan,&nbsp;Zebo Wu,&nbsp;Huibin Yin,&nbsp;Shimin kang,&nbsp;Kezi Yao*,&nbsp;Haojie Qian and Yongjun Xu*,&nbsp;","doi":"10.1021/acsanm.5c0015110.1021/acsanm.5c00151","DOIUrl":"https://doi.org/10.1021/acsanm.5c00151https://doi.org/10.1021/acsanm.5c00151","url":null,"abstract":"<p >Aqueous-phase reforming of methanol (APRM) stands out as a viable approach for providing hydrogen to polymer electrolyte fuel cells, offering advantages over traditional gas-phase methodologies conducted at relatively high temperatures. Nevertheless, the development of an effective and hydrothermally stable non-noble-metal catalyst remains a formidable challenge. This paper presents a series of resilient and efficient Cu/CuOx/C catalysts synthesized by encapsulating Cu/CuOx nanoparticles (NPs) within a carbon matrix, utilizing Cu-BTC as a precursor. The Cu-CuOx/C-700 catalyst, in particular, demonstrates a remarkable hydrogen evolution rate of 33.7 μmol·gcat⁻¹·s⁻¹ at 210 °C, significantly surpassing that of conventional catalysts. The exceptional stability of the Cu/CuOx/C catalysts can be ascribed to the protective carbon coating, which enhances the interaction between the Cu/CuOx NPs and the support and primarily inhibits the aggregation of copper nanoparticles under harsh aqueous reaction conditions. The reused catalysts were explored through XRD and ICP-OES analyses, which indicated that the structural integrity of the Cu-CuOx/C catalysts is largely preserved.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6490–6497 6490–6497"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767384","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":"Systematic Development of a Plasmon Ruler Using Dithiolate-Grafted Gold Nanoparticle for High-Throughput Screening of Anti-Icing Activity","authors":"Eunkeu Oh*,&nbsp;Meghna Thakur,&nbsp;Kimihiro Susumu,&nbsp;Young C. Kim,&nbsp;Paul Johns,&nbsp;Popular Pandey,&nbsp;Arthur J. Altunc,&nbsp;Daniel C. Ratchford,&nbsp;Michael H. Stewart,&nbsp;Jozsef Czege,&nbsp;Andrew Kim,&nbsp;Michael D. Burkart and Scott A. Walper,&nbsp;","doi":"10.1021/acsanm.5c0003110.1021/acsanm.5c00031","DOIUrl":"https://doi.org/10.1021/acsanm.5c00031https://doi.org/10.1021/acsanm.5c00031","url":null,"abstract":"<p >Here, we performed a systematic development of an assay based on a gold nanoparticle (AuNP) plasmon ruler to detect the activity of anti-icing reagents with superior stability and consistency in different phases (e.g., solid and liquid) applicable for standardized high-throughput screening (HTS). We found that dithiolate-grafted AuNPs indeed act as plasmon molecular rulers to measure the AuNPs interparticle distance during freezing. The plasmon ruler reflects the changes in ice crystallization in the presence of anti-icing reagents and can be used for standardized HTS of anti-icing reagents. We found that dithiolate ligands on the AuNP surface play a critical role in the assay performance. Molecular dynamics simulations showed that the anti-icing effects of the AuNPs are mostly sensitive to the ligand size and charges during cooling. Our optimized AuNP probe demonstrated higher colloidal stability and superior buffer resilience than previous versions, making it suitable for various types of target molecules, including chemicals, proteins, and organometals, with a high dynamic range of sensing. We investigated how the localized surface plasmon resonance peak or absorption spectrum correlates to ice formation and how this correlation can be used to evaluate the reagents’ anti-icing efficacy. We deconvoluted the measured spectra with theoretically derived unit spectra of a quantized AuNP cluster using COMSOL Multiphysics to calculate an apparent interparticle distance of AuNPs during ice formation and its changes in the presence of anti-icing reagents. We also proposed quantifying a AuNP-based colorimetric assay using dose–response Hill’s equation and an IC₅₀ calculation, which is essential for a standardized HTS for anti-icing efficacy measurement. Then, we compared AuNP results with established assays, ice recrystallization inhibition, and dynamic ice, of which the dynamic changes of size and shape over time were analyzed using machine learning.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6419–6434 6419–6434"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767390","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":"Revisiting Microstructure, Facet Exposure, and Lattice Distortion in Bismuth Oxyhalide (BiOX, X = Cl, Br, I) Nanomaterials for Catalysis","authors":"Melissa Jane Marks,&nbsp;Cecilie Friberg Klysner,&nbsp;Sara Frank,&nbsp;Nanna Nielsen Lange,&nbsp;Rebekka Klemmt,&nbsp;Henrik Særkjær Jeppesen,&nbsp;Marcel Ceccato,&nbsp;Espen Drath Bøjesen,&nbsp;Maarten G. Goesten and Nina Lock*,&nbsp;","doi":"10.1021/acsanm.4c0667510.1021/acsanm.4c06675","DOIUrl":"https://doi.org/10.1021/acsanm.4c06675https://doi.org/10.1021/acsanm.4c06675","url":null,"abstract":"<p >We present a comprehensive structural study of BiOCl, BiOBr, and BiOI nanomaterials, focusing on the impact of varying the synthesis pH and halide on the structural properties of BiOX catalysts. By employing a combination of advanced structural analysis techniques, including Rietveld refinement of powder X-ray diffraction (PXRD) data, X-ray pair distribution function (PDF) analysis, and X-ray absorption spectroscopy (XAS), notable structural insights into crystallite dimensions, microstrain, and lattice distortion were elucidated. Most notably, all BiOX materials comprised anisotropic, platelet-shaped crystallites with dominant {001} facets when using a microwave-assisted synthesis protocol, irrespective of the synthesis pH or halide. While large cylindrical crystalline platelets formed in acidic conditions, significantly smaller crystalline regions were formed under neutral-mildly alkaline conditions, with dimensions in the layer stacking direction (i.e., along the crystallographic <i>c</i> axis) becoming ultrathin (approximately 4 nm for BiOBr synthesized at pH 9.0), corresponding to only 4 bound unit cells. As the crystalline regions become smaller, the microstrain increases and the crystal lattice experiences increased distortion, expanding in the <i>c</i> direction and contracting in the <i>a</i> = <i>b</i> directions. Given the widespread application of BiOX nanomaterials within photo- and electro-catalysis, the practical significance of the structural characteristics on properties relevant to catalytic performance is discussed throughout. Namely, the crystallite dimensions and facet exposure have important implications for the available surface area for catalytic application, while the tunable microstrain, unit cell distortion, and ultrathin morphology might influence the electronic band structure, optical properties, and charge carrier dynamics. This study provides valuable insight into tuning the properties of BiOX nanocatalysts for their intended application, as well as demonstrating the merit of performing detailed structural analysis on BiOX nanomaterials using X-ray probes.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6301–6317 6301–6317"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767367","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":"Multicore Manganese Ferrite Nanoparticles for Theranostics","authors":"Carlos Eduardo Ribeiro,&nbsp;Marcus Vinícius-Araújo and Andris Figueiroa Bakuzis*,&nbsp;","doi":"10.1021/acsanm.5c0030910.1021/acsanm.5c00309","DOIUrl":"https://doi.org/10.1021/acsanm.5c00309https://doi.org/10.1021/acsanm.5c00309","url":null,"abstract":"<p >Collective behavior mediated by the assembly of nanoparticles (NPs) can result in theranostic applications. Herein, multicore Mn-ferrite-based magnetic nanostructures of various sizes were obtained by tuning the ionic force in the colloidal media, facilitated by a magnetophoresis phase-separation process. The hydrodynamic diameters ranged from 55 nm for the preseparation sample (0 h) to 35 nm at 48 h post separation. X-ray diffraction patterns confirmed the spinel structure. The saturation magnetization decreased from 262.5 kA m^–1 at 0 h to 111.9 kA m^–1 at 48 h, indicating a decrease in size. Transmission electron microscopy images corroborate these results but also reveal that lower cluster sizes contained smaller NPs, changing from 15 ± 4 nm at 0 h to 5 ± 2 nm at 48 h. Optical studies revealed a blue-shift phenomenon and a decrease in absorbance with a decrease in size that is consistent with the lower photothermal conversion coefficient, while the band gap energy varied from 1.72 to 2.06 eV due to confinement effects. The longitudinal and transverse (<i>r</i>₂) relaxivities at 20 °C decreased from 20 mM^–1 s^–1 to 8 mM^–1 s^–1 and from 750 mM^–1 s^–1 to 300 mM^–1 s^–1 from 0 to 48 h, respectively. While the <i>r</i>₂ of the NPs at 0 h decreased at 37 °C to 568 mM^–1 s^–1, confirming that the clusters are in the motional averaging regime. The results are explained by outer sphere theory and suggest that the magnetic cluster is a thermally sensitive contrast agent with potential for MRI thermometry.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7061–7072 7061–7072"},"PeriodicalIF":5.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.5c00309","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814556","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}

{"title":"High-Loading Copper Cluster Nanozymes for Enhancing Antioxidant Activity","authors":"Deyi Liu,&nbsp;Chaoyu Fan,&nbsp;Xueli Zhou,&nbsp;Yonghua Tang*,&nbsp;Xiaofeng Xu,&nbsp;Haofei Huang,&nbsp;Zhisen Zhang,&nbsp;Weifeng Rong* and Youhui Lin*,&nbsp;","doi":"10.1021/acsanm.5c0004310.1021/acsanm.5c00043","DOIUrl":"https://doi.org/10.1021/acsanm.5c00043https://doi.org/10.1021/acsanm.5c00043","url":null,"abstract":"<p >Despite significant advancements having been made in the development of nanozymes, discovering highly active nanozyme candidates remains a formidable challenge. Herein, we propose an innovative cross-coupling strategy to construct a high-loading graphdiyne-supported Cu cluster (Cu-GDY) nanozyme with synergetic interactions between neighboring Cu atoms, which can significantly enhance their ability to scavenge reactive oxygen species (ROS). In our unique system, the formation of the GDY featuring uniformly distributed pores from butadiyne linkages concurs with the anchoring of Cu atoms to effectively prevent the aggregation of low-coordinated Cu atoms into large particles throughout the reaction process. Additionally, density functional theory calculations based on free energy diagrams and electronic structure analysis reveals that intersite communication between metal atoms in Cu-GDY lowers the energy barrier for reactions, thereby facilitating both superoxide dismutase-like and catalase-like activities. As expected, our experimental results show that the Cu-GDY nanozyme can function as a highly efficient antioxidant to eliminate ROS. More importantly, our as-obtained Cu-GDY with exceptional antioxidant activity can be integrated into a cigarette filter system, where it can efficiently scavenge various ROS generated during tobacco combustion. Overall, this study presents an innovative approach for constructing high-loading copper cluster nanozymes and broadens the potential application scope of antioxidant nanozymes.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6435–6444 6435–6444"},"PeriodicalIF":5.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767349","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":"Photoelectric Reservoir Computing Based on TiOx Memristor for Analog Signal Processing","authors":"Zimu Li,&nbsp;Dengshun Gu,&nbsp;Xuesen Xie,&nbsp;Ping Li,&nbsp;Bai Sun*,&nbsp;Changrong Liao,&nbsp;Xiaofang Hu,&nbsp;Jia Yan,&nbsp;Lidan Wang*,&nbsp;Shukai Duan* and Guangdong Zhou*,&nbsp;","doi":"10.1021/acsanm.5c0033710.1021/acsanm.5c00337","DOIUrl":"https://doi.org/10.1021/acsanm.5c00337https://doi.org/10.1021/acsanm.5c00337","url":null,"abstract":"<p >The bioinspired computing system aims to enhance the ability to handle complex tasks in an efficient, low-cost, and parallel processing as manner of neuron and neural network. Memristors are ideal components for achieving this goal. We have developed a memristor with an Au/TiO_<i>x</i>/ Indium tin oxide (ITO) structure, showing highly sensitive to light stimuli and self-rectifying switching memory. These features enable our memristor with synaptic plasticity such as short-term plasticity (STP), long-term plasticity (LTP), paired-pulse facilitation (PPF), spike-timing-dependent plasticity (STDP) and so on. The photoconductance weight can be precisely regulated through the variety of light pulse parameters including the light intensity, stimuli frequency, pulse number, pule width, suggesting that this TiO_<i>x</i> optoelectronic memristor can execute complex intelligent task by giving different light dosage. We have designed two systems, an electrocardiogram diagnosis and digital recognition, to demonstrate the capability of the memristor that as real physical node to implement reservoir computing, indicating that our memristor has rich intermediate states to efficiently execute the intelligent tasks. This work lays a significant foundation on optoelectronic memristor-based edge computing.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6591–6603 6591–6603"},"PeriodicalIF":5.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767286","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":"Activating Mn Sites on MnO2 Hollow Spheres for CO2 Photoreduction","authors":"Qiangshuai Wang,&nbsp;Sengui Liang,&nbsp;Jinshuo Liu,&nbsp;Yuanyuan Xie,&nbsp;Qi Pang*,&nbsp;Zhao-Qing Liu and Yibo Chen*,&nbsp;","doi":"10.1021/acsanm.5c0030210.1021/acsanm.5c00302","DOIUrl":"https://doi.org/10.1021/acsanm.5c00302https://doi.org/10.1021/acsanm.5c00302","url":null,"abstract":"<p >Photocatalytic conversion of carbon dioxide (CO₂) to carbon-based fuels is a promising approach to alleviating environmental and energy problems. Therefore, designing photocatalysts with morphological structures that favor gas–solid reactions and exhibit exceptional catalytic efficiencies is strongly demanded. In this work, a porous-framed heterostructure, constructed by anchoring Cs₄PbBr₆ perovskite nanocrystals on MnO₂ hollow spheres, exhibits a 1.8-fold enhancement in the total electron consumption rate (95.3 μmol g^–1 h^–1) for CO₂ photoreduction compared to the original Cs₄PbBr₆ nanocrystals. Detailed optoelectronic characterizations and theoretical calculations demonstrate that the electronic interactions in the heterointerface trigger disproportionation of Mn and help to expose active Mn sites that attract electrons, thus improving the CO₂ activation and the following hydrogenation step to produce COOH*. The open and through porous structure also contributes to the enhanced reaction rate by accelerating mass transfer during the photoreduction reaction. This study provides valuable insights for the development of efficient catalysts for CO₂ photoreduction in gas–solid reactions.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6575–6582 6575–6582"},"PeriodicalIF":5.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767279","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":"Surface Wetting Controlled by Coordination Regulation of the Cellulose Amorphous Region for Constructing High-Strength Triboelectric Materials","authors":"Fanchao Yu,&nbsp;Xin Wang,&nbsp;Pinle Zhang,&nbsp;Huancheng Huang,&nbsp;Junyu Chen,&nbsp;Yanhao Xu,&nbsp;Neng Xiong,&nbsp;Xinyue Nong,&nbsp;Xinke Yu and Xinliang Liu*,&nbsp;","doi":"10.1021/acsanm.5c0004110.1021/acsanm.5c00041","DOIUrl":"https://doi.org/10.1021/acsanm.5c00041https://doi.org/10.1021/acsanm.5c00041","url":null,"abstract":"<p >Due to its remarkable advantages, such as unique multidimensional structure and excellent potential for adjustable surface chemical modification, cellulose has emerged as a highly promising triboelectric material. However, the surface of the cellulose nanofibers (CNF) is enriched with hydroxyl groups, rendering them highly hygroscopic. This property leads to a reduction in the charge density and mechanical properties of CNF materials, thus limiting their application as triboelectric materials in high-humidity environments. Therefore, in this study, an economical and straightforward ″minimally invasive intervention″ strategy was adopted. Metal ions M^x+ (such as Fe³⁺/Al³⁺) were coordinated with the hydroxyl groups in the amorphous region while causing minimal damage to the crystalline structure of cellulose as much as possible. Due to the formation of coordination bonds between the hydroxyl groups and the metal ions, the free rotation of the hydroxyl groups on the surface of cellulose was effectively restricted. Thus, it would retard the wetting rate of the cellulose surface and improve the mechanical properties and polarity of the cellulose. Compared with the pure CNF film, the mechanical properties of the M^x+-CNF films have been improved by 3.94-fold and 3.35-fold, respectively (from 32.41 to 128.81 and 108.89 MPa), and the open-circuit voltages have improved by 1.9-fold and 2.9-fold, respectively (from 15 to 23 and 36 V). Even at 90% RH, they continue to demonstrate good cyclic stability and reliability. This research provides an approach for cellulose to harvest energy in a high-humidity environment.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6498–6508 6498–6508"},"PeriodicalIF":5.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767285","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}