ACS Applied Nano Materials最新文献

{"title":"Electrochemical Design of Gold Nanostructures for Controllable Electrochemical Performance and Scalable Aptamer Sensing Application","authors":"Feixiong Chen*,&nbsp;Bahar Mostafiz,&nbsp;Johanna Suni and Emilia Peltola*,&nbsp;","doi":"10.1021/acsanm.5c0096210.1021/acsanm.5c00962","DOIUrl":"https://doi.org/10.1021/acsanm.5c00962https://doi.org/10.1021/acsanm.5c00962","url":null,"abstract":"<p >A simple electrochemical method for designing gold nanostructures was developed by programming deposition potentials, enabling surface nanoengineering of screen-printed electrodes. As a result of this method, we have observed three distinct growth modes of gold nanostructures, which, depending on their various morphologies, are Needle-shaped gold nanostructures (one dimensionally dominated mode), leaf-shaped gold nanostructures (two-dimensionally dominated mode), and coral-shaped gold nanostructures (three-dimensionally dominated mode). All gold nanostructures exhibited an enhanced electrochemical response to the redox solution, improved reversibility, and reduced impedance, compared to the unmodified electrodes, albeit to varying degrees. We demonstrated the superior antifouling performance of the coral-shaped gold nanostructures in a redox solution containing bovine serum albumin, compared to other gold nanostructures. Finally, to assess another aspect of differences in the electrochemical sensing behaviors, we constructed an aptamer sensor for progesterone detection, where the needle-shaped gold nanostructures showed the highest signal gain using Electrochemical Impedance Spectroscopy, in comparison to that of leaf-shaped and coral-shaped gold nanostructures. We envision that the proposed method will potentially enable the design or fabrication of desirable gold nanostructures with increasingly complex or hierarchical structures, bearing promising applications in wide sensing and biomedical applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 19","pages":"9812–9823 9812–9823"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.5c00962","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144067813","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":"Antimicrobial Peptide-Coated Molybdenum Disulfide Nanoparticles for Enhanced Antimicrobial Effect and Biofilm Eradication","authors":"Jianping Yang,&nbsp;Runze Yang,&nbsp;Jiale Sun,&nbsp;Guanglan Peng,&nbsp;Mengjie Li,&nbsp;Wanzhen Li,&nbsp;Longbao Zhu,&nbsp;Weiwei Zhang*,&nbsp;Fei Ge*,&nbsp;Jun Wang* and Ping Song*,&nbsp;","doi":"10.1021/acsanm.5c0184910.1021/acsanm.5c01849","DOIUrl":"https://doi.org/10.1021/acsanm.5c01849https://doi.org/10.1021/acsanm.5c01849","url":null,"abstract":"<p >To address the growing threat of drug-resistant bacteria and their biofilm-associated infections, we developed molybdenum disulfide (MoS₂) nanoparticles coated with antimicrobial peptides (AMPs). The MoS₂/AMP composite nanoparticles, synthesized through electrostatic phase interaction, maintained an impressive photothermal-conversion efficiency of 32.3%. The minimum inhibitory concentrations of the MoS₂/AMP nanoparticles against multidrug-resistant <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> were approximately 78 and 64 μg/mL, respectively, under 808 nm near-infrared light irradiation for 5 min. Furthermore, around 90% of the biofilm was effectively ablated with 128 μg/mL of the composite nanoparticles under the same irradiation conditions. These composite nanoparticles demonstrated remarkable antibacterial and biofilm-eradication capabilities by harnessing the united effects of photothermal action and AMPs. Hemolysis and cytotoxicity assays showed that AMP-coated MoS₂ significantly diminished the hemolytic activity and cytotoxicity associated with AMP. This work suggests a potentially effective strategy for facilitating the commercial application of AMPs, and the composite nanoparticles MoS₂/AMP hold considerable promise for antibacterial treatment of chronic infected wounds, biofilm elimination, and the mitigation of antibiotic resistance.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10742–10753 10742–10753"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114740","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":"Limiting Slow Electron Transport in Carbon-Supported Mo-Doped SnO2 Nanoparticles for Electrocatalytic Ammonia Synthesis","authors":"Yaxi Li,&nbsp;Zhiquan Lang*,&nbsp;Sobia Jabeen,&nbsp;Yunliang Liu,&nbsp;Yuanyuan Cheng,&nbsp;Xinya Yuan,&nbsp;Naiyun Liu*,&nbsp;Chunqiang Zhuang,&nbsp;Zhenhui Kang* and Haitao Li*,&nbsp;","doi":"10.1021/acsanm.5c0120310.1021/acsanm.5c01203","DOIUrl":"https://doi.org/10.1021/acsanm.5c01203https://doi.org/10.1021/acsanm.5c01203","url":null,"abstract":"<p >Electrocatalytic nitrogen reduction reaction (NRR) is widely considered a promising and environmentally sustainable ammonia synthesis strategy under ambient conditions, yet the competitive hydrogen evolution reaction (HER) impedes the N₂ to NH₃ conversion efficiency. In this work, carbon-supported Mo-doped SnO₂ nanoparticles (Mo-SnO₂/C) with a unique tubular structure were designed to suppress free water adsorption, thereby reducing the competing HER and improving the NRR performance. The optimized Mo-SnO₂/C-3 exhibits a high NH₃ yield of 24.03 μg·h^–1·mg_cat^–1 and Faradaic efficiency of 7.11% at −0.8 V vs RHE in 0.1 M Na₂SO₄. The transient photovoltage further reveals that limiting the rapid transfer of slow electrons effectively suppresses the kinetically preferred HER process. In addition, <i>in situ</i> attenuated total reflection surface-enhanced infrared absorption spectroscopy further elucidated that the formation of a tubular carbon layer structure improves the hydrophobicity of the catalyst, weakens the adsorption of the interfacial water molecules, and inhibits proton transport, which also realizes the inhibition of HER and improves the selectivity of NRR. This study highlights that limiting the slow electron transport strategy may inform the advancement of efficient and highly selective electrocatalysts.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10494–10502 10494–10502"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114738","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":"InAs Nanowire-Based Twin Electrical Sensors Enabling Simultaneous Gas Detection","authors":"Camilla Baratto*,&nbsp;Egit Musaev,&nbsp;Valeria Demontis,&nbsp;Stefano Luin,&nbsp;Valentina Zannier,&nbsp;Lucia Sorba,&nbsp;Guido Faglia,&nbsp;Luigi Rovati and Francesco Rossella*,&nbsp;","doi":"10.1021/acsanm.4c0723810.1021/acsanm.4c07238","DOIUrl":"https://doi.org/10.1021/acsanm.4c07238https://doi.org/10.1021/acsanm.4c07238","url":null,"abstract":"<p >Epitaxially grown InAs NWs are relevant for electrical sensing applications due to the Fermi level pinning at the NW surface and are highly sensitive to the surrounding environment. While a single NW growth batch consists of millions of virtually identical replicas of the same NW, real samples display subtle differences in NW size, shape, and structure, which may affect detection performance. Here, electrical gas detection is investigated in two nominally identical or twin devices fabricated starting from the same NW growth batch. Two individual wurtzite InAs NWs are placed onto a fabrication substrate at a 2 μm distance with a 90° relative orientation, each NW is electrically contacted, and the nanodevices are exposed to humidity and NO₂ flux diluted in synthetic air. Electrical signal versus time is measured simultaneously in each nanodevice upon exposure to different gases and concentrations. The observed detection limit is 2 ppm for NO₂ and 20% for relative humidity. Correlation analysis methods are exploited by calculating autocorrelation and cross-correlation functions for the experimental signal pairs, indicating lack of cross-correlation in the signal noise of the two nanodevices, suggesting that signal differences between the twins could be ascribed mainly to nonidealities in the fabrication protocol and nanoscopic differences in the two nanostructures, rather than to different environmental conditions. While InAs nanowires are used here as demonstrators of simultaneous gas sensing, the approach is general and virtually applies to any nanoscale material suitable for the realization of two-terminal electronic devices.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10275–10286 10275–10286"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.4c07238","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114739","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":"PtCo Nanocatalysts for Hydrogen Generation from Ammonia Borane Hydrolysis","authors":"Mengting Li,&nbsp;Junhui Liu*,&nbsp;Wenke Zhang,&nbsp;Xiang Li*,&nbsp;Yuan Zhao,&nbsp;Jinzhi Li,&nbsp;Fuxu Liu and Xuming Guo,&nbsp;","doi":"10.1021/acsanm.5c0139710.1021/acsanm.5c01397","DOIUrl":"https://doi.org/10.1021/acsanm.5c01397https://doi.org/10.1021/acsanm.5c01397","url":null,"abstract":"<p >Hydrogen generation from ammonia borane hydrolysis is a promising avenue for the development of the hydrogen economy. Rational design of cost-effective and highly active catalysts for hydrogen generation is desirable but is still a challenge. Herein, we constructed PtCo catalysts by achieving a well-dispersed deposition of ultrafine Pt nanoparticles onto Co nanoparticle supports, thereby optimizing their catalytic performance for hydrogen generation. The physical and electronic structures of PtCo catalysts were regulated via Mo doping to boost the hydrogen generation rate. The optimized PtCoMo-NC-3/0.1 catalyst displayed an unprecedented turnover frequency (TOF) of 6268 min^–1 with 0.44 M NaOH. The apparent activation energy of ammonia borane hydrolysis catalyzed by the PtCoMo-NC-3/0.1 catalyst was as low as 26.62 kJ·mol^–1. The remarkable catalytic performance was attributed to the synergistic interaction between Pt and Co as well as the structure regulation of the catalysts. The catalyst design strategy in this work avoided the Pt sites from being covered by Co nanoparticles. More active sites were provided for the catalytic hydrolysis reaction, and the synergistic effect between Pt and Co was also enhanced. This work presented a prospect to design efficient bimetallic catalysts with noble and non-noble metals for boosting hydrogen evolution.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10583–10594 10583–10594"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114744","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":"Ge and Core/Shell Ge/Al Quantum Dot Lattices in Amorphous SiC Matrix for Application in Photo- and Thermosensitive Devices","authors":"Marija Tkalčević,&nbsp;Matej Bubaš,&nbsp;Jordi Sancho-Parramon,&nbsp;Ivana Periša,&nbsp;Krešimir Salamon,&nbsp;Sigrid Bernstorff,&nbsp;Iva Bogdanović Radović,&nbsp;Georgios Provatas,&nbsp;Robert Peter and Maja Mičetić*,&nbsp;","doi":"10.1021/acsanm.5c0106110.1021/acsanm.5c01061","DOIUrl":"https://doi.org/10.1021/acsanm.5c01061https://doi.org/10.1021/acsanm.5c01061","url":null,"abstract":"<p >Thin films with self-assembled quantum dots (QDs) featuring a semiconductor core and a metallic shell possess unique properties that can be precisely adjusted by altering the size, spacing, and structure of the QDs. In this study, we concentrate on the properties related to efficient photoelectric conversion and thermoelectric sensitivity of Ge and Ge/Al core/shell QD lattices within a SiC matrix. These nanostructured materials are fabricated by using the magnetron sputtering technique, which facilitates their formation and self-assembly during the deposition process. We explore various Ge QD sizes and Al shell thicknesses in films deposited on a p-type Si substrate. Our findings demonstrate that the optical, thermoelectric, and photoelectric conversion properties of these simple devices can be extensively tuned by modifying the core size and shell thickness. Notably, an enhanced photoelectric conversion of approximately 130% was observed in the material with the thinnest Al shell, explained by a theoretical model for electric field enhancement in core–shell structured QDs and multiple exciton generation, which is enhanced in nanoscaled Ge. Additionally, materials with Al-shell QDs exhibit a significantly high temperature coefficient of resistance, above 8%/K, surpassing that of Ge, SiC, or pure Ge QDs. These insights are vital for advancing and optimizing devices based on Ge QDs, offering valuable contributions to both QD physics and materials engineering. The materials produced hold great potential for applications in light-sensitive devices and temperature sensors.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10395–10408 10395–10408"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114896","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":"2D Fe-hxl-UiO-67_SH/Au Nanosheets: Cascaded Nanozyme-Driven Chemodynamic Therapy Enhancement for Triple-Negative Breast Cancer","authors":"Gen Li,&nbsp;Xiuli Zhang,&nbsp;Wenhui Yang,&nbsp;Baicheng Liao,&nbsp;Xiaoli Chen,&nbsp;Nan Yu*,&nbsp;Liyong Chen* and Xuefu Hu*,&nbsp;","doi":"10.1021/acsanm.5c0066410.1021/acsanm.5c00664","DOIUrl":"https://doi.org/10.1021/acsanm.5c00664https://doi.org/10.1021/acsanm.5c00664","url":null,"abstract":"<p >Chemodynamic therapy (CDT) has emerged as a promising strategy for cancer treatment by leveraging Fenton reactions to generate cytotoxic reactive oxygen species (ROS). However, its therapeutic efficacy remains hindered by the limited endogenous H₂O₂ levels in the tumor microenvironment (TME) and the instability of catalytic metal ions. Here, we report the rational design of Fe-hxl-UiO-67_SH/Au nanosheets, a multifunctional nanoplatform that integrates glucose oxidase (GOx)-mimicking activity with peroxidase (POD)-like properties for enhanced CDT. The Fe-hxl-UiO-67_SH/Au nanosheets efficiently catalyze glucose oxidation to produce H₂O₂, which subsequently undergoes a Fenton reaction to generate hydroxyl radicals (^•OH), leading to lipid peroxide (LPO) accumulation and ferroptotic cell death. Furthermore, the incorporation of Au nanoparticles (AuNPs) synergistically amplifies ROS production while stabilizing Fe species within the frameworks, ensuring sustained catalytic activity. In vitro studies demonstrate that Fe-hxl-UiO-67_SH/Au exhibits potent anticancer effects against triple-negative breast cancer (TNBC), inducing mitochondrial dysfunction and ferroptosis through glutathione peroxidase 4 (GPX4) inhibition. This work presents a nanozyme-driven strategy for CDT enhancement, offering a promising approach for overcoming the limitations of traditional Fenton-based therapies and advancing cancer nanomedicine.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 19","pages":"9643–9649 9643–9649"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144067815","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":"Liposome-Based Codelivery of AgFe2O4/TiO2 and Paclitaxel for Enhanced Breast Cancer Photothermal Chemotherapy","authors":"Jia Liu,&nbsp;Chengyu Huang,&nbsp;Lingfeng Xie,&nbsp;Xueyan Zhang,&nbsp;Ruizhao Cai,&nbsp;Yutao Peng,&nbsp;Shoukang Qu and Shanghua Xiao*,&nbsp;","doi":"10.1021/acsanm.5c0128910.1021/acsanm.5c01289","DOIUrl":"https://doi.org/10.1021/acsanm.5c01289https://doi.org/10.1021/acsanm.5c01289","url":null,"abstract":"<p >Silver ferrite (AgFe₂O₄), a ferrite material with abundant oxygen vacancies, exhibits near-infrared (NIR) sensitivity in the tumor microenvironment and activates reactive oxygen species (ROS) generation. A titanium dioxide (TiO₂) coating further enhances the oxygen vacancy concentration and material stability. However, ferrite-based nanomaterials face challenges in biological systems due to their inherent instability and susceptibility to degradation. In this study, we developed an AgFe₂O₄/TiO₂ and paclitaxel (PTX) nanoplatform codelivery system based on ginsenoside Rh2 liposomes. Ginsenoside Rh2 replaces cholesterol encapsulated in the lipid nanoparticles to enhance the stability of the photosensitizer AgFe₂O₄/TiO₂ and improve the therapeutic efficacy of PTX, thereby promoting pharmacokinetics and pharmacodynamics. The preparation, having a hydrodynamic diameter of 144 nm, can inhibit the migration of breast cancer cells, stimulate the production of ROS, induce cell apoptosis, and has significant cytotoxicity. Pharmacological studies confirmed that Rh2 codelivery with AgFe₂O₄/TiO₂ and PTX showed strong targeting ability, and combined with light exposure to reach the hyperthermia threshold rapidly, significantly inhibited breast cancer proliferation by 83% (<i>P</i> &lt; 0.05). This drug delivery system integrates ginsenoside Rh2 liposome, photothermal therapy, and targeted chemotherapy, offering a promising combined strategy for photothermal and chemotherapy in cancer treatment.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10537–10548 10537–10548"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114825","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":"Dual Nano-Reinforced 3D-Printed Polylactic Acid Scaffolds for Antibacterial and Osteogenic Applications","authors":"Wang Guo*,&nbsp;Yanting Wei,&nbsp;Bowen Li,&nbsp;Sidan Feng,&nbsp;Wenlang Bu,&nbsp;Yanjian Huang,&nbsp;Bin Liu,&nbsp;Shan Wang,&nbsp;Huaming Mai,&nbsp;Wenjie Zhang,&nbsp;Hui You,&nbsp;Jieming Wen* and Yu Long*,&nbsp;","doi":"10.1021/acsanm.5c0116810.1021/acsanm.5c01168","DOIUrl":"https://doi.org/10.1021/acsanm.5c01168https://doi.org/10.1021/acsanm.5c01168","url":null,"abstract":"<p >To address the challenge of infectious bone defects, bone scaffolds must not only satisfy requirements for porous structure, mechanical properties, and biological performance but also possess antibacterial functionality. In this study, we proposed dual doping of Mg(OH)₂ and CuO nanoparticles into polylactic acid (PLA) and used the material extrusion (MEX) 3D printing technology to fabricate a PLA/Mg(OH)₂/CuO nanocomposite porous bone scaffold. The experimental results show that due to the dispersion strengthening effect of inorganic nanoparticles, the mechanical properties of the scaffolds are significantly enhanced. The compressive strength of the PLA/5Mg(OH)₂/1CuO scaffold reaches 21.18 MPa, representing a 67.17% increase compared to pure PLA. Degradation experiments reveal that Mg(OH)₂ and CuO nanoparticles create pitting corrosion in the matrix and accelerate the degradation of the matrix. By the 28th day, the weight loss of the PLA/5Mg(OH)₂/5CuO scaffold was as high as 6.22%. By using a PLA matrix to encapsulate the nanoparticles, the nanocomposite scaffolds can continuously release magnesium and copper ions for more than 28 days without an obvious burst release phenomenon. The ions mediated by the released magnesium and copper enhance the biomineralization ability of the scaffold in SBF. Immunofluorescence and ALP staining indicate that the incorporation of Mg(OH)₂ nanoparticles and an appropriate amount of CuO nanoparticles is beneficial for cell growth and differentiation. Antibacterial experiments using the plate count method reveal that the material doped with two kinds of nanoparticles has achieved remarkable results in eliminating <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>, and its effect is closely related to the CuO content. SEM indicated that the bacteria were subjected to strong antibacterial effects from the nanoparticles, leading to visible deformation, rupture, and leakage of intracellular substances. This study demonstrates that the dual doping of metal oxides and hydroxides can enhance multiple properties of polymer bone scaffolds, rendering them more suitable for applications in bone tissue engineering.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10471–10485 10471–10485"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114535","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":"Bacterial Cellulose/MXene-Based Actuators via Dual-Mechanism Synergism of Light and Wet for Remote Control","authors":"Yaqi Qin,&nbsp;Xuran Xu*,&nbsp;Xuebao Xiong,&nbsp;Luyu Yang* and Pengcheng Wang*,&nbsp;","doi":"10.1021/acsanm.5c0116010.1021/acsanm.5c01160","DOIUrl":"https://doi.org/10.1021/acsanm.5c01160https://doi.org/10.1021/acsanm.5c01160","url":null,"abstract":"<p >Smart actuating materials are widely used as components in smart sensors, soft robotics, and other applications due to their responsiveness to external stimuli, such as heat, light, magnetism, and humidity. However, the preparation of multiresponsive materials remains a significant challenge. Herein, we report a multiresponsive MXene-based flexible actuator (MBC/PI). The actuator exhibits high actuation performance through a dual synergistic mechanism involving the humidity-responsive expansion of the bacterial cellulose (BC)/MXene composite layer (MBC) and the thermally induced expansion of polyethylenimine (PI). In the MBC layer, MXene acts as the skeleton, while bacterial cellulose acts as an enhancer, tightly bound through dopamine modification. Upon near-infrared (NIR) irradiation, the photothermal effect of MXene rapidly converts light energy into heat, triggering localized water evaporation and subsequent contraction in the MBC layer. Concurrently, the PI substrate undergoes significant thermal expansion due to its high coefficient of thermal expansion (CTE). This dual-response mechanism enables the actuator to demonstrate a remarkable reversible actuation performance under near-infrared (NIR) light stimulation. In a humid environment, the maximum bending angle of the actuator can reach 170°, and a 60° bending deformation can be achieved in just 2 s. This work proposes a strategy for constructing infrared-driven actuators and provides ideas for further development of multiresponsive actuators and other intelligent materials.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 19","pages":"9962–9971 9962–9971"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144067758","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}