ACS Applied Nano Materials最新文献

{"title":"High-Performance and Low-Power Sub-5 nm Field-Effect Transistors Based on the Isolated-Band Semiconductor","authors":"Xinxin Qu,&nbsp;Yu Ai,&nbsp;Xiaohui Guo,&nbsp;Lin Zhu* and Zhi Yang*,&nbsp;","doi":"10.1021/acsanm.5c0072310.1021/acsanm.5c00723","DOIUrl":"https://doi.org/10.1021/acsanm.5c00723https://doi.org/10.1021/acsanm.5c00723","url":null,"abstract":"<p >To suppress the subthreshold swing (SS) and overcome the 60 mV/dec limit, we theoretically propose a strategy using isolated-band semiconductors as the channel. Monolayer LaBr₂ has a unique isolated band around the Fermi level that cuts off the carrier transport of high-energy regions in the off-state while maintaining thermionic emission in the on-state. Even at a supply voltage of 0.50 V, the armchair-oriented LaBr₂ field-effect transistors (FETs) meet the international standards for high-performance and low-power applications by minimizing the gate length to 3 and 4 nm, respectively. Specifically, the 5 nm armchair-oriented LaBr₂ FET brings the SS to 50 mV/dec with a high on-state current of 1057 μA/μm. The zigzag-oriented LaBr₂ FETs can meet high-performance requirements with gate length lowered to 4 nm. The LaBr₂ FETs also exhibit excellent spin filtering and negative differential resistance effects. This finding provides a practical solution for extending Moore’s law to sub-5 nm scales.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7317–7324 7317–7324"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818907","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":"ZnO Nanorod-Immobilized Polyurethane Foams for Efficient Removal of Gaseous Volatile Organic Compounds","authors":"Memnune Kardeş*,&nbsp;Bekir Dizman,&nbsp;Koray Öztürk and Derya Y. Köseoğlu-İmer,&nbsp;","doi":"10.1021/acsanm.5c0066510.1021/acsanm.5c00665","DOIUrl":"https://doi.org/10.1021/acsanm.5c00665https://doi.org/10.1021/acsanm.5c00665","url":null,"abstract":"<p >Nanoscale semiconductor materials are highly effective catalysts due to their high surface-to-volume ratio, enhanced charge carrier separation, and increased active site density. Integrating them into three-dimensional porous supports optimizes mass transport, facilitating efficient adsorption of volatile organic compounds (VOCs) and catalytic interactions. A flexible hybrid photocatalyst was designed by immobilizing zinc oxide (ZnO) nanorods (NR) on the three-dimensional polyurethane (PU) foam support. The polymer surface was functionalized by chemical solution treatment to increase the adhesion between the catalyst and the surface. ZnO NRs were grown on all strut surfaces of the PU foam via a seed-mediated approach. Photocatalytic experiments were carried out in a laboratory-scale plug flow type photoreactor under UVA light irradiation. The effects of parameters such as initial concentration (ppm), relative humidity (RH) (from 0% to 65%), air flow rate (0.3, 0.6, and 1 L/min), and temperature (from 21 to 35 °C) on the gas phase toluene, ethylbenzene, and chlorobenzene removal were evaluated. In the presence of RH, photoreactions accelerated, leading to an increase in the CO₂ conversion rate. The optimum RH value was determined as 30% according to the maximum removal rate. Similarly, removal efficiencies were improved at temperatures higher than room temperature, and the optimum temperature was evaluated as 30 °C. However, as the initial concentration and air flow rate increased, the degradation rates decreased. Maximum VOC degradation rates of toluene, ethylbenzene, and chlorobenzene were obtained as 81%, 71%, and 92% by simultaneous adsorption and photocatalytic oxidation under UVA light at 30% RH and 30 °C, respectively. Chlorobenzene showed a higher removal efficiency than toluene and ethylbenzene for all conditions. The hydrophilic nature of the ZnO NR surface promoted the adsorption of chlorinated compounds. The interaction of VOCs with the catalyst surface revealed that surface chemistry plays a significant role in photocatalytic removal.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7290–7303 7290–7303"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.5c00665","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818903","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":"Dumbbell-Shaped Nanoporous CaCO3 for Phosphate Removal","authors":"Changfu Xu,&nbsp;Yanwu Wang*,&nbsp;Jinyun He,&nbsp;Shuyi Mo and Fei Long,&nbsp;","doi":"10.1021/acsanm.5c0036810.1021/acsanm.5c00368","DOIUrl":"https://doi.org/10.1021/acsanm.5c00368https://doi.org/10.1021/acsanm.5c00368","url":null,"abstract":"<p >With the accelerated development of industrial and agricultural activities, phosphorus pollution has emerged as a global environmental issue. The adsorption method has been widely applied to treat phosphorus contamination. The development of a cost-effective adsorbent for phosphate removal is crucial for the adsorption process. In this study, dumbbell-shaped nanoporous CaCO₃ (DNPCC) featuring a mesoporous nanorod-assembled structure was synthesized via a simple precipitation-calcination method as the adsorbent for phosphorus-containing wastewater. Hierarchical calcium oxalate monohydrate (COM) was first prepared using ethylene glycol (EG) and sodium alginate (SA) as morphology-directing agents, then DNPCC was obtained through calcination of COM. The influence of EG and SA on DNPCC was systematically investigated. DNPCC exhibited remarkable phosphate removal performance in simulated phosphorus wastewater and landfill leachate, respectively, which was attributed to the synergistic effects of high Brunauer–Emmett–Teller (BET) surface area, mesoporous architecture, and positive surface charge. Kinetic studies revealed that the adsorption process was predominantly governed by chemical adsorption. It had a theoretical maximum adsorption capacity of 94.3 mg/g, surpassing that of most reported adsorbents. Thermodynamic analysis further demonstrated that the adsorption process was spontaneous, endothermic, and characterized by increased randomness. Additionally, DNPCC effectively overcomes the interference of various competing ions and maintains a high phosphate removal rate of 83.15%, even after five adsorption cycles. The electrostatic attraction and ligand exchange were the dominant adsorption mechanisms of phosphorus using DNPCC. This study highlighted DNPCC as a highly efficient and selective adsorbent for phosphate removal, offering promising potential for addressing water pollution challenges.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7099–7111 7099–7111"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814360","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":"Zwitterionic pH-Responsive Polyurethane Nanoparticles with Cinnamaldehyde and Aggregation-Induced Emission Photosensitizers for Photodynamic Therapy of Diabetic Infected Wounds","authors":"Bibo Ren,&nbsp;Jun Li,&nbsp;Bo Li,&nbsp;Kaijun Li,&nbsp;Shiyu Wang,&nbsp;Qiaoqiao Han,&nbsp;Zelin Ou* and Haibo Wang*,&nbsp;","doi":"10.1021/acsanm.5c0066210.1021/acsanm.5c00662","DOIUrl":"https://doi.org/10.1021/acsanm.5c00662https://doi.org/10.1021/acsanm.5c00662","url":null,"abstract":"<p >Diabetic infected wounds pose a significant challenge due to their refractoriness and potential for serious complications. Conventional treatment strategies primarily rely on antibiotics, which not only contribute to drug resistance but also pose risks of systemic toxicity. Photodynamic therapy (PDT) has emerged as a promising method but suffers from limited effectiveness against Gram-negative bacteria or high material toxicity. For example, quaternary ammonium salts and residual photosensitizers can produce persistent phototoxicity after the antibacterial process, exacerbating the inflammatory response in diabetic wounds and hindering tissue repair. To address these limitations, we developed an innovative zwitterionic pH-responsive polyurethane nanoparticle (PU NP) platform that integrates aggregation-induced emission (AIE) photosensitizers and cinnamaldehyde for targeted and efficient antibacterial treatment. Cinnamaldehyde is released in the bacterial infection microenvironment, synergistically enhancing ROS production with the photosensitizers under light conditions. The multifunctional nanoplatform significantly improves antibacterial efficiency while minimizing off-target toxicity, potential toxicity, and inflammatory response risks. Furthermore, the PU NP system demonstrates the ability to regulate T cell activation and migration in mouse wound tissues, thus optimizing the T cell immune microenvironment. This innovative approach holds promise for the precise treatment of diabetic infected wounds and has the potential to overcome the limitations of current photodynamic therapy, accelerating its clinical translation.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7304–7316 7304–7316"},"PeriodicalIF":5.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814650","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":"Development of Zirconia/Calcium Phosphate/Pyrolytic Carbon Composites with Nanoscale Lamellar-Structured Grain Boundary Phases to Control Crack Propagation for Biomedical Applications","authors":"Taishi Yokoi*,&nbsp;Peng Chen,&nbsp;Kaname Yoshida,&nbsp;Yeongjun Seo,&nbsp;Tomoyo Goto,&nbsp;Karen Kuroyama,&nbsp;Tohru Sekino,&nbsp;Tomoka Hasegawa,&nbsp;Tetsuya Yoda,&nbsp;Hiroyasu Kanetaka and Masakazu Kawashita,&nbsp;","doi":"10.1021/acsanm.5c0017910.1021/acsanm.5c00179","DOIUrl":"https://doi.org/10.1021/acsanm.5c00179https://doi.org/10.1021/acsanm.5c00179","url":null,"abstract":"<p >Ceramic-based artificial bones that remain in the body for extended periods must exhibit high mechanical stability. However, the inherent brittleness of ceramics makes it difficult to ensure their long-term stability <i>in vivo</i>. In our previous work, we enhanced the damage tolerance of bulk calcium phosphate (CaP) ceramics by controlling the direction of crack propagation through lamellar structures. Although this material was compositionally suitable for artificial bone applications, its insufficient strength limited its practical use. Therefore, in this study, we developed an artificial bone composite with enhanced crack propagation control by incorporating a nanoscale lamellar-structured CaP phase into zirconia, a ceramic known for its high strength and toughness. The resulting composite features a controlled structure where hydroxyapatite and pyrolytic carbon form nanoscale lamellar structures at the grain boundaries of spherical tetragonal zirconia. The bending strength of this composite was found to be 360 MPa, which is significantly higher than that of dense hydroxyapatite sintered bodies, which are typical nonbiodegradable artificial bone materials. When a crack developed in this composite by indentation test, the damaged part detached. No evident cracks were found after the test, and the material as a whole maintained its integrity. This unique property is likely attributed to the nanoscale lamellar structures at the grain boundaries. Further, <i>in vitro</i> tests conducted using MC3T3-E1 cells confirmed that the composite exhibited no apparent cytotoxicity. Our results indicate that the developed composite can be potentially used to prepare novel nonbiodegradable artificial bone material with excellent long-term mechanical stability <i>in vivo</i>.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7039–7048 7039–7048"},"PeriodicalIF":5.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814653","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":"Temperature-Modulated VO2/Au Composite Nanoparticles for High-Performance SERS-Based Trace Detection","authors":"Jiran Liang*,&nbsp;Lanxiang Zhang,&nbsp;Shuai Wang,&nbsp;Yong Yu and Dangyuan Lei,&nbsp;","doi":"10.1021/acsanm.5c0038010.1021/acsanm.5c00380","DOIUrl":"https://doi.org/10.1021/acsanm.5c00380https://doi.org/10.1021/acsanm.5c00380","url":null,"abstract":"<p >The nanoscale surface of the substrate is crucial for the molecule detection in surface-enhanced Raman spectroscopy (SERS) technology. In this work, we propose a VO₂/Au composite nanoparticle structure as a high-performance SERS substrate, which was fabricated through a combination of evaporation coating, annealing, and spin coating. The Raman enhancement factor (EF) for rhodamine 6G (R6G) molecules reaches 4.4 × 10⁹ with a minimum detection concentration of 10^–10 M and the relative standard deviation (RSD) is only 12.9%. The results show that the nanoengineered substrate exhibits exceptional Raman activity at 20 °C, attributed to plasmonic hotspots and charge transfer mechanisms. When the temperature increases to 80 °C, the phase transition of VO₂ is induced, leading to a weakening of the charge transfer. This enables the in situ modulation of the SERS signal. The VO₂/Au composite nanoparticle structure prepared in this work exhibits strong Raman enhancement performance and in situ modulation of the SERS signal intensity, which shows great potential for applications in trace detection.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7112–7123 7112–7123"},"PeriodicalIF":5.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814715","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":"Amino Acid-Functionalized Nanoporous Metal–Organic Frameworks for Boosting CO2 Capture under Dry and Humid Conditions","authors":"Yikang Zhao,&nbsp;Zhongzheng Zhang,&nbsp;Qiang Gao* and Wei Wei*,&nbsp;","doi":"10.1021/acsanm.5c0048510.1021/acsanm.5c00485","DOIUrl":"https://doi.org/10.1021/acsanm.5c00485https://doi.org/10.1021/acsanm.5c00485","url":null,"abstract":"<p >Metal–organic frameworks (MOFs), a class of porous materials, featuring high surface areas, chemical tunability and stability, have been extensively studied for their applications in gas adsorption and separation, particularly in carbon dioxide (CO₂) capture. However, their CO₂ capture capacities often decrease under humid conditions and cannot meet practical application requirements. Herein, we present a facile postsynthetic method to incorporate amino acids (AAs) into an ultrastable MIP-206-OH MOF to construct a series of MIP-206-OH-AA materials. Among these materials, MIP-206-OH-Gly exhibited superior CO₂ capture performance, achieving capacities of 48.4 cm³ g^–1 (1 bar, 273 K) and 317 cm³ g^–1 (30 bar, 273 K), which showed 92.8 and 71.9% enhancement compared to the pristine MIP-206-OH materials, respectively. Furthermore, MIP-206-OH-Gly and MIP-206-OH-Ala exhibited enhanced CO₂ capture performance under humid conditions and exhibited exceptional stability, maintaining their performance even after 10 cycles. This study provides a facile method to construct amino acid-functionalized nanoporous MOFs for boosting CO₂ capture and underscores the potential of this strategy as an effective and scalable solution for carbon capture under dry and humid conditions.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7190–7199 7190–7199"},"PeriodicalIF":5.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814724","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":"Room-Temperature and Atmospheric Pressure Coupling of Carbon Dioxide with Epoxides Catalyzed by Iodide Ions Confined in Nanopores of Periodic Mesoporous Organosilica","authors":"Sadegh Joudian,&nbsp;Stefano Todisco,&nbsp;Pietro Mastrorilli and Mojtaba Khorasani*,&nbsp;","doi":"10.1021/acsanm.5c0163510.1021/acsanm.5c01635","DOIUrl":"https://doi.org/10.1021/acsanm.5c01635https://doi.org/10.1021/acsanm.5c01635","url":null,"abstract":"<p >This study explored the influence of the pore size and channel length of mesoporous organosilicas containing pyridine-bis-imidazolium units toward the cycloaddition of CO₂ to epoxides. Utilizing the same organosilica precursor, we synthesized two distinct types of materials: mesoporous organosilica nanoparticles (BIm-MON) with smaller channel sizes and periodic mesoporous organosilica (BIm-PMO) with larger channel sizes. Following the modification of the parent materials with iodide or bromide ions, we prepared a library of catalysts denoted as the X-BIm-PMO and X-BIm-MON series, where X is Cl, Br, or I. It was observed that after modifying BIm-PMO with iodide ions, the entrance pore size was 5.4 nm, whereas the pore sizes for chloride and bromide ions were 8.1 nm. We then compared their catalytic activities in the coupling of CO₂ with styrene oxide as a substrate under two reaction conditions A (5 bar CO₂ at 80 °C) and B (1 bar at RT). Under both reaction conditions, the I-BIm-PMO catalyst demonstrated a higher activity than the other catalysts. The enhanced performance of the I-BIm-PMO catalyst, when compared to its chloride and bromide equivalents or I-BIm-MON, can be explained by the fact that it not only still has good mass transfer but also provides enrichment of CO₂ molecules within the channels through a confinement effect. This confinement effect may be caused by the coexistence of iodide ions and bis-imidazolium groups, leading to increased catalytic activity under ambient conditions. To elucidate the role of the bis-imidazolium groups in the observed activity, we also synthesized a monoimidazolium catalyst (I-MIm-PMO) and evaluated its performance under the same reaction conditions. Due to its effective confinement effect, we found that the I-BIm-PMO catalyst can adsorb CO₂ three times more than I-MIM-PMO. Furthermore, various terminal epoxides were selectively converted into their corresponding cyclic carbonates. The catalyst was also reused four times.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"7394–7406 7394–7406"},"PeriodicalIF":5.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814645","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":"NO Detection on Exposed Fe–N4 Sites Deposited on Nanometer-Sized Cu-Hemin MOFs Coated on Reduced Graphene Oxide at Room Temperature","authors":"You Wu,&nbsp;Weiran Li,&nbsp;Yanwei Chang,&nbsp;Yixun Gao,&nbsp;Fengnan Wang,&nbsp;Hao Li,&nbsp;Paddy J. French,&nbsp;Yi-Kuen Lee,&nbsp;Sheikh A. Akbar,&nbsp;Ahmad M. Umar Siddiqui,&nbsp;Yao Wang* and Guofu Zhou,&nbsp;","doi":"10.1021/acsanm.4c0639710.1021/acsanm.4c06397","DOIUrl":"https://doi.org/10.1021/acsanm.4c06397https://doi.org/10.1021/acsanm.4c06397","url":null,"abstract":"<p >For the practical diagnosis of inflammatory respiratory diseases, achieving sensitive and rapid NO sensing at the parts per billion level, all at room temperature, is of great significance. Herein, we developed a chemiresistor gas sensor with a sheet-on-sheet structure composed of an amorphous Cu-hemin MOF with reduced graphene oxide (rGO) nanosheets. The SEM images show that the Cu-hemin MOF/rGO composite exhibits a two-dimensional sheet-like structure. Due to its nanosized architecture, the Cu-hemin MOF exhibits a significant number of active sites for efficient NO detection. The Cu-hemin MOF/rGO composite material exhibited excellent NO sensing performance, including high sensitivity (<i>R</i>_a/<i>R</i>_g = 1.06, 50 ppb), reliable repeatability, high selectivity, and fast response/recovery (43 s/367 s, 10 ppm). The mechanism study revealed that the formation of the MOF altered the hemin dimer’s structure, resulting in the release of additional Fe(III)–N₄ active sites and improved sensitivity. Moreover, the incorporation of rGO significantly boosted the conductivity of Cu-hemin MOFs. Using this two-dimensional sheet-like material, a mask-type sensor was also prepared and verified to be effective as a flexible and wearable sensing device for parts per billion level exhaled NO detection.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"6943–6954 6943–6954"},"PeriodicalIF":5.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814716","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":"Polycaprolactone Fibrous Membranes Coated with Reduced Graphene Oxide for Scalable 3D Printing of Electronics and Bioelectronics","authors":"Enrico F. Demarchi,&nbsp;Laís P. Gabriel,&nbsp;Ana Champi and Ana L. C. Pereira*,&nbsp;","doi":"10.1021/acsanm.4c0729410.1021/acsanm.4c07294","DOIUrl":"https://doi.org/10.1021/acsanm.4c07294https://doi.org/10.1021/acsanm.4c07294","url":null,"abstract":"<p >The development of advanced conductive polymer matrix composites is crucial for technological innovation in sectors demanding materials with enhanced multifunctional properties. This study reports the synthesis and characterization of a polycaprolactone (PCL) membrane coated with reduced graphene oxide (rGO), combining the electrical conductivity of the rGO with the biocompatibility, flexibility, and mechanical integrity of the PCL membranes. We employed a rotary jet spinning technique to fabricate uniform PCL fibers, followed by dip-coating with graphene oxide and thermal reduction of the graphene oxide on a hot plate. The reduction process was systematically investigated to optimize the electrical conductivity and establish correlations between electrical performance, chemical composition, and structural transformations. The crystalline structure, morphology, chemical composition, and thermal stability of the nanocoated polymer membranes were confirmed through X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). Electrical resistance trends were supported by XPS and Raman spectroscopy, indicating enhanced sp² carbon hybridization, an increased carbon–oxygen ratio and reduced structural disorder. This study highlights a scalable approach for integrating rGO into PCL, significantly enhancing the electrical properties of the composite and making it a promising candidate for applications in printed electronics and bioelectronics, including flexible biosensors and electroactive scaffolds for tissue engineering.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 14","pages":"6955–6964 6955–6964"},"PeriodicalIF":5.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.4c07294","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814613","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}