ACS Applied Nano Materials最新文献

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PtFeNi Trimetallic Alloy Nanoparticles as Electrocatalysts for Oxygen Reductions
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-11 DOI: 10.1021/acsanm.5c0073710.1021/acsanm.5c00737
Zhengying Zhang, Dong Fang*, Hua Yang, Jian Liu and Feng Liu*, 
{"title":"PtFeNi Trimetallic Alloy Nanoparticles as Electrocatalysts for Oxygen Reductions","authors":"Zhengying Zhang,&nbsp;Dong Fang*,&nbsp;Hua Yang,&nbsp;Jian Liu and Feng Liu*,&nbsp;","doi":"10.1021/acsanm.5c0073710.1021/acsanm.5c00737","DOIUrl":"https://doi.org/10.1021/acsanm.5c00737https://doi.org/10.1021/acsanm.5c00737","url":null,"abstract":"<p >The large-scale implementation of proton exchange membrane fuel cells remains constrained by the critical challenge of developing cost-effective and durable cathode catalysts capable of withstanding acidic oxygen reduction reaction conditions. While platinum-based binary/ternary alloy systems demonstrate potential for platinum group metal content reduction while enhancing catalytic performance metrics, significant optimization challenges persist. In this study, we report a “prelithiation–deposition” strategy to synthesize carbon-supported PtFeNi ternary alloy nanoparticles with ultralow platinum content (4.35 wt %). Postsynthesis annealing at 800 °C yielded PtFeNi/C-800 catalysts exhibiting superior mass activity (3.41 A mg<sub>Pt</sub><sup>–1</sup> at 0.9 V vs RHE) and specific activity (5.95 mA cm<sup>–2</sup>) compared to both binary counterparts (PtFe/C-800, PtNi/C-800) and nonprelithiated controls. Theoretical calculations show that the lithiation process induces new active sites in the carbon material, which promotes the bonding of carbon to the metal. In addition, the synergistic electron precipitation effect and stress effect brought about by alloying optimized the reaction pathways throughout the lifetime; the introduction of iron and nickel altered the electronic structure of platinum, leading to enhanced electronic interactions between the metal nanoparticles and the carbon carriers, all of which combined to provide the PtFeNi/C-800 catalysts with higher catalytic activity and durability.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 16","pages":"8283–8293 8283–8293"},"PeriodicalIF":5.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867541","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}
引用次数: 0
Amino-Functionalized Nano-UiO-66 for the Detection of Nerve Agent Analogs
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-10 DOI: 10.1021/acsanm.5c0059410.1021/acsanm.5c00594
Mengting Ran, Yali Liu, Lu Feng, Jinliang Ning, Jiawen Li and Xincun Dou*, 
{"title":"Amino-Functionalized Nano-UiO-66 for the Detection of Nerve Agent Analogs","authors":"Mengting Ran,&nbsp;Yali Liu,&nbsp;Lu Feng,&nbsp;Jinliang Ning,&nbsp;Jiawen Li and Xincun Dou*,&nbsp;","doi":"10.1021/acsanm.5c0059410.1021/acsanm.5c00594","DOIUrl":"https://doi.org/10.1021/acsanm.5c00594https://doi.org/10.1021/acsanm.5c00594","url":null,"abstract":"<p >The size modulation of metal–organic frameworks (MOFs) is of vital importance in many fields, especially in sensing for enhanced performance, while the synthesis of small-sized MOF nanocrystals with wide active reaction sites remains challenging. Here, we report a general sustainable strategy for building smaller, nanosized, self-assembled, film-forming UiO-66 with abundant active reaction sites via carboxylated cellulose nanofibril (CNF)-induced in situ growth. Benefiting from the remarkably boosted active site quantity, the eliminated background fluorescence, as well as the superior charge transfer between an amino group and an analyte, an efficient fluorescent platform for the detection of the nerve agent analog diethyl cyanophosphonate (DCNP) was established. Not only were a significantly low limit of detection (LOD, 4.2 nM/0.685 ppb) and robust selectivity against a wide range of common substances (&gt;21 types) achieved, but an immediate response to DCNP vapor (&lt;1 s) was also demonstrated by a sensing chip. We believe that the design of UiO-66 with nanosize and monodispersity would help advance the development of high-performance MOF-based fluorescence sensing devices.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 16","pages":"8231–8240 8231–8240"},"PeriodicalIF":5.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867372","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}
引用次数: 0
Plasmonic Au–Cu Alloy Nanoparticles Exhibiting Order–Disorder Phase Transitions for Sensing and Catalysis
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-10 DOI: 10.1021/acsanm.5c0027610.1021/acsanm.5c00276
Masahiro Homma,  and , Takumi Sannomiya*, 
{"title":"Plasmonic Au–Cu Alloy Nanoparticles Exhibiting Order–Disorder Phase Transitions for Sensing and Catalysis","authors":"Masahiro Homma,&nbsp; and ,&nbsp;Takumi Sannomiya*,&nbsp;","doi":"10.1021/acsanm.5c0027610.1021/acsanm.5c00276","DOIUrl":"https://doi.org/10.1021/acsanm.5c00276https://doi.org/10.1021/acsanm.5c00276","url":null,"abstract":"<p >Plasmonic sensing leverages nanoscale transducers and straightforward optical setups to detect a wide range of phenomena, such as (bio)molecules, chemical reactions, temperature variations, and ionic strength. This versatility in sensing extends from practical devices to fundamental research applications such as monitoring changes in crystalline structures. In this work, we explore plasmonic Au–Cu alloy nanoparticles, which experience order–disorder phase transitions, including long-range superlattices. The alloy nanoparticles, fabricated through the dewetting method, are optically monitored to detect the phase transitions through their plasmonic resonance shifts while changing the temperature in a vacuum. The nanoparticles with a 50% Cu alloy composition involve a long-range incommensurate phase and were found to exhibit a lower phase transition temperature than bulk, implying a nanosize effect.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 15","pages":"7662–7668 7662–7668"},"PeriodicalIF":5.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.5c00276","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842221","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}
引用次数: 0
Carbon Foam with In Situ Fe-Catalyzed Dense CNT@Graphite Core–Shell Fiber on Skeletons for High-Performance Radar-Infrared Stealth
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-10 DOI: 10.1021/acsanm.5c0087110.1021/acsanm.5c00871
Yiman Lu, Chuan Liu, Xiaoning Zhao*, Ruobing Cao, Ya Lin, Ye Tao and Zhongqiang Wang*, 
{"title":"Carbon Foam with In Situ Fe-Catalyzed Dense CNT@Graphite Core–Shell Fiber on Skeletons for High-Performance Radar-Infrared Stealth","authors":"Yiman Lu,&nbsp;Chuan Liu,&nbsp;Xiaoning Zhao*,&nbsp;Ruobing Cao,&nbsp;Ya Lin,&nbsp;Ye Tao and Zhongqiang Wang*,&nbsp;","doi":"10.1021/acsanm.5c0087110.1021/acsanm.5c00871","DOIUrl":"https://doi.org/10.1021/acsanm.5c00871https://doi.org/10.1021/acsanm.5c00871","url":null,"abstract":"<p >Carbon foams (CFs) with features of ultralow density, high surface area, rich porosity, and mechanical flexibility attract growing interest for wide applications. Herein, a lightweight CF with whisker-like Fe-catalyzed CNT@graphite core–shell fibers on skeletons is synthesized through intermolecular hydrogen bonding and low-rate carbonization methods. The CF displays excellent microwave absorption (MA) and infrared stealth performance. The minimum reflection loss reaches −47.04 dB at 2.00 mm thickness. A remarkable reduction of radar cross section (RCS) of 33.43 dB m<sup>2</sup> is obtained, and monostatic RCS simulations with actual models are carried out. The cooperative effect of multilosses and enhanced impedance matching is proposed to be responsible for the good MA. Meanwhile, the high porosity and the presence of abundant mesopores endow the CF with good thermal insulation properties at temperatures from 36 °C (human body) to a high value of 100 °C, making it an attractive material for infrared stealth applications. This work presents a potential material for possible stealth applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 16","pages":"8316–8326 8316–8326"},"PeriodicalIF":5.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867504","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}
引用次数: 0
Achieving the Sensing Property of Hg0 Molecules on Black Phosphorene Nanosheets Using Anisotropy as a Response Signal
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-10 DOI: 10.1021/acsanm.5c0106510.1021/acsanm.5c01065
Zhixiu Wang*, Jing Zhang and Haiying Du*, 
{"title":"Achieving the Sensing Property of Hg0 Molecules on Black Phosphorene Nanosheets Using Anisotropy as a Response Signal","authors":"Zhixiu Wang*,&nbsp;Jing Zhang and Haiying Du*,&nbsp;","doi":"10.1021/acsanm.5c0106510.1021/acsanm.5c01065","DOIUrl":"https://doi.org/10.1021/acsanm.5c01065https://doi.org/10.1021/acsanm.5c01065","url":null,"abstract":"<p >Elemental mercury (Hg<sup>0</sup>) molecules have received great attention as a neurotoxic environmental pollutant. However, the chemical inertness of Hg<sup>0</sup> molecules hinders discovery by gas sensors. In this work, we explore the gas sensing property of Hg<sup>0</sup> molecules on black phosphorene nanosheets. The results show that the Hg<sup>0</sup> molecules can form chemical adsorption on the black phosphorene nanosheet with a suitable adsorption energy of 0.85 eV. Chemical bonds can be formed between Hg<sup>0</sup> molecules and the black phosphorene nanosheet via the orbital interaction. Although the chemical adsorption slightly changes the band gap of 0.08 eV and the work function of 0.11 eV, the adsorption of Hg<sup>0</sup> molecules will remarkably influence the behavior of frontier orbitals. The difference of electron effective mass decreases from 9.54 to 6.82 times between armchair and zigzag directions; as a result, when applying a bias of 2.0 V, the anisotropy of current remarkably decreases from 41.34 to 7.67 times between armchair and zigzag directions, which can be an effective response signal to detect Hg<sup>0</sup> molecules. This work not only reports a gas sensor for Hg<sup>0</sup> molecules but also provides a physical factor of anisotropy to monitor environmental pollutants.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 16","pages":"8417–8423 8417–8423"},"PeriodicalIF":5.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867378","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}
引用次数: 0
NiFe-Layered Double Hydroxides Modified with Co–Mo Nitride for the Oxygen Evolution Reaction in Seawater
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-10 DOI: 10.1021/acsanm.5c0074010.1021/acsanm.5c00740
Xu Zhang, Baochang Gao, Yuan Tian, Yu Shi, Guowei Li, Zhiguo Zhang, Chengwei Han, Li Sun, Jingru Zhang, Bo Liu*, Hongwei Zhang* and Guangyu Bai*, 
{"title":"NiFe-Layered Double Hydroxides Modified with Co–Mo Nitride for the Oxygen Evolution Reaction in Seawater","authors":"Xu Zhang,&nbsp;Baochang Gao,&nbsp;Yuan Tian,&nbsp;Yu Shi,&nbsp;Guowei Li,&nbsp;Zhiguo Zhang,&nbsp;Chengwei Han,&nbsp;Li Sun,&nbsp;Jingru Zhang,&nbsp;Bo Liu*,&nbsp;Hongwei Zhang* and Guangyu Bai*,&nbsp;","doi":"10.1021/acsanm.5c0074010.1021/acsanm.5c00740","DOIUrl":"https://doi.org/10.1021/acsanm.5c00740https://doi.org/10.1021/acsanm.5c00740","url":null,"abstract":"<p >Direct electrolysis of seawater offers a promising pathway for sustainable hydrogen production while avoiding the issues caused by freshwater shortages. However, the sluggish four-electron transfer kinetics and the competitive adsorption of Cl<sup>–</sup> ions of the oxygen evolution reaction (OER) during seawater electrolysis remain as key challenges in designing effective catalysts. Herein, leveraging the electron-absorbing properties of molybdenum cobalt nitride (CoN/Mo<sub>2</sub>N) to modulate the electronic structure of nickel–iron layered double hydroxide (NiFe-LDH), a nanoscale hierarchical heterostructure of NiFe-LDH coated on CoN/Mo<sub>2</sub>N (CoN/Mo<sub>2</sub>N/LDH) was engineered to achieve highly efficient OER. Operando electrochemical impedance spectroscopy reveals that the heterointerface facilitates charge transport kinetics. Additionally, charge density analysis and adsorption energy calculations confirm that the NiFe-LDH preferentially adsorbs OH<sup>–</sup> over Cl<sup>–</sup> in alkaline seawater. The CoN/Mo<sub>2</sub>N/LDH nanostructure requires only 249 mV overpotential to achieve 500 mA·cm<sup>–2</sup> in 6 M KOH + seawater, maintaining 94.8% of its initial activity over 10 days of continuous operation. This work elucidates the electron-absorption-driven modulation of electronic structures in nitride-regulated LDH nanomaterials, enabling their application in industrial-scale seawater electrolysis. The tailored nanoscale design achieves simultaneous high-efficiency oxygen evolution and exceptional stability, advancing scalable green hydrogen production from seawater.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 16","pages":"8209–8219 8209–8219"},"PeriodicalIF":5.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867425","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}
引用次数: 0
Stable rGO/Ag/CeO2 Nanostructured Substrates for Superior SERS Detection of Trace Analytes
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-10 DOI: 10.1021/acsanm.5c0030710.1021/acsanm.5c00307
Jil Rose Perutil, S. Prashanth, Channabasaveshwar V. Yelamaggad, Pavan Nukala and Neena S. John*, 
{"title":"Stable rGO/Ag/CeO2 Nanostructured Substrates for Superior SERS Detection of Trace Analytes","authors":"Jil Rose Perutil,&nbsp;S. Prashanth,&nbsp;Channabasaveshwar V. Yelamaggad,&nbsp;Pavan Nukala and Neena S. John*,&nbsp;","doi":"10.1021/acsanm.5c0030710.1021/acsanm.5c00307","DOIUrl":"https://doi.org/10.1021/acsanm.5c00307https://doi.org/10.1021/acsanm.5c00307","url":null,"abstract":"<p >Surface-enhanced Raman spectroscopy (SERS) is a potent analytical technique that has been widely applied in the trace detection of important analyte molecules such as pesticides, drugs, reaction intermediates, and biomarkers. Although the sensitivity of noble metals has reached its pinnacle, they suffer from poor reusability, stability, and high cost that are crucial for commercialization. We have designed a layered SERS substrate, rGO/Ag/CeO<sub>2</sub> (RAC) substrate, comprising reduced graphene oxide (rGO) film, 20 nm Ag nanoparticle film, and cerium oxide overlayer, bearing 2–3 nm ultrasmall CeO<sub>2</sub> nanoparticles, due to its excellent oxidation protection and redox behavior and demonstrated the superior performance employing 4-mercaptobenzoic acid (MBA) as the standard analyte. The rGO layer aids in fluorescence quenching, while the combined effect of surface plasmon resonance by silver nanoparticles and prominent charge transfer by a nanocrystalline CeO<sub>2</sub> layer plays a significant role in providing a superior SERS substrate with an enhancement factor of 10<sup>8</sup> and a detection limit of 10<sup>–8</sup> M for MBA. The oxygen deficiencies in CeO<sub>2</sub> are responsible for the higher degree of charge transfer observed for the RAC substrate than the rGO/Ag substrate. The SERS substrate has retained its stable performance under high relative humidity and temperature conditions, reproducing uniform signals of analytes across the substrate, attributed to the oxidation protection nature of CeO<sub>2</sub>. RAC substrate is also shown to be highly sensitive to the trace detection of a range of nitroaromatic and nitramine explosives down to nanomolar level. The substrate is fabricated by physical deposition routes and is scalable. This study demonstrates the enormous potential of the distinctive RAC films to realize a scalable SERS substrate with sensitivity, reliability, and stability that are crucial in SERS-based applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 16","pages":"7998–8009 7998–8009"},"PeriodicalIF":5.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867505","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}
引用次数: 0
Microwave Swelling and Exfoliation of Continuous Carbon Nanotube Networks for Scalable Manufacturing of Nanocomposites
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-09 DOI: 10.1021/acsanm.5c0050710.1021/acsanm.5c00507
Michael N. Durso*,  and , A. John Hart*, 
{"title":"Microwave Swelling and Exfoliation of Continuous Carbon Nanotube Networks for Scalable Manufacturing of Nanocomposites","authors":"Michael N. Durso*,&nbsp; and ,&nbsp;A. John Hart*,&nbsp;","doi":"10.1021/acsanm.5c0050710.1021/acsanm.5c00507","DOIUrl":"https://doi.org/10.1021/acsanm.5c00507https://doi.org/10.1021/acsanm.5c00507","url":null,"abstract":"<p >Rapid heating of carbon nanotube (CNT) materials via microwave-induced heating is known to enable efficient chemical functionalization and accelerated curing of composites. Both liquid-phase and solvent-free techniques rely on the large dielectric loss of CNT materials, which causes them to absorb incident microwave energy. However, despite the prevalence of liquid-phase techniques in the processing of continuous CNT networks (e.g., CNT yarns and tapes), to our knowledge a detailed exploration of microwave heating of continuous CNT networks imbibed with liquid is not present in literatured. Here, we study liquid-phase microwave heating of CNT networks using commercially produced nanoporous CNT yarns as a model system. We observe that rapid heating of immersed CNT networks causes macroscopic swelling of CNT yarns and even exfoliation of CNT bundles, increasing their porosity and surface area while preserving their continuity and crystallinity. Through selection of appropriate solvents and heating rates, this swelling is found to be controllable. Swelling isminimized via low heating rates (i.e., 1–3 °C min<sup>–1</sup>), which allow for thermal equilibration, and maximized using microwave-transparent, low-loss solvents with low boiling points. Accordingly, we believe that the microwave-superheated liquid environment is particularly promising for manufacturing advanced CNT materials, which can benefit from this physical modification. By exploiting this intrinsic behavior in the presence of various reactants, liquid-phase microwave processing may enable faster and more effective functionalization or decoration of CNT yarns or <i>in situ</i> synthesis of polymer nanocomposites.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 15","pages":"7685–7693 7685–7693"},"PeriodicalIF":5.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842175","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}
引用次数: 0
Porous SERS Microneedles Integrating Sampling and Sensing for Interstitial Glucose Detection
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-09 DOI: 10.1021/acsanm.5c0163310.1021/acsanm.5c01633
Geng Zhu, Chang Liu, Yu Lu, Xiufang Mo, Jian Dong, Kun Xu, Yan Huang, Cheng Chen, Xiaoyi Lv, Xi Yang* and Xiangwei Zhao*, 
{"title":"Porous SERS Microneedles Integrating Sampling and Sensing for Interstitial Glucose Detection","authors":"Geng Zhu,&nbsp;Chang Liu,&nbsp;Yu Lu,&nbsp;Xiufang Mo,&nbsp;Jian Dong,&nbsp;Kun Xu,&nbsp;Yan Huang,&nbsp;Cheng Chen,&nbsp;Xiaoyi Lv,&nbsp;Xi Yang* and Xiangwei Zhao*,&nbsp;","doi":"10.1021/acsanm.5c0163310.1021/acsanm.5c01633","DOIUrl":"https://doi.org/10.1021/acsanm.5c01633https://doi.org/10.1021/acsanm.5c01633","url":null,"abstract":"<p >Frequent blood glucose monitoring is crucial for diabetes management, but traditional fingerstick tests are invasive and uncomfortable, leading to decreased patient compliance. Interstitial fluid (ISF) offers a minimally invasive alternative for glucose monitoring, as its glucose levels closely correlate with blood levels. This study presents a porous microneedle (MN) integrated with surface-enhanced Raman scattering (SERS) probes, enabling high-sensitivity and wide-range ISF glucose detection. Glucose enters the MNs via capillary action and is oxidized by glucose oxidase (GOx) to produce hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). H<sub>2</sub>O<sub>2</sub> then reacts with 4-mercaptophenylboronic acid (4-MPBA) on the SERS substrate, generating 4-mercaptophenol (4-MPhOH) and altering the Raman signal. By analyzing the intensity ratio between the resulting 4-MPhOH and initial 4-MPBA peaks, glucose concentration can be quantified. In vitro experiments demonstrated stable and accurate detection within the 0–15 mM glucose range, and animal studies confirmed its feasibility for in vivo use. This SERS-based porous MN technology offers a minimally invasive, highly sensitive, and convenient solution for glucose management and point-of-care diagnosis in diabetes patients.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 15","pages":"7867–7875 7867–7875"},"PeriodicalIF":5.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842289","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}
引用次数: 0
Perovskite Solar Cells with ZnO-MgO-SnO2 Multilayer Electron Transport Layers
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-04-09 DOI: 10.1021/acsanm.4c0727410.1021/acsanm.4c07274
Ping Cao*, Yaohao Zhang, Yi Gao, Limei Zhang, Zhengyang Ji and Xinyue Cong, 
{"title":"Perovskite Solar Cells with ZnO-MgO-SnO2 Multilayer Electron Transport Layers","authors":"Ping Cao*,&nbsp;Yaohao Zhang,&nbsp;Yi Gao,&nbsp;Limei Zhang,&nbsp;Zhengyang Ji and Xinyue Cong,&nbsp;","doi":"10.1021/acsanm.4c0727410.1021/acsanm.4c07274","DOIUrl":"https://doi.org/10.1021/acsanm.4c07274https://doi.org/10.1021/acsanm.4c07274","url":null,"abstract":"<p >Organic–inorganic hybrid perovskite solar cells (PSCs) have attracted significant attention in recent years due to their exceptionally high theoretical photoelectric conversion efficiency. Although substantial breakthroughs have been made in controlling the bandgap by adjusting the ratio of organic–inorganic compounds, research on the electron transport layer (ETL) and hole transport layer has been largely overlooked, which greatly limits the further development of PSCs. In this study, a multilayer electron transport layer (ETL) was constructed based on ZnO nanofilms, utilizing MgO and SnO<sub>2</sub> with similar lattice dimensions to create a multilayer nanofilm structure. This design achieved energy level alignment, reduced exciton migration energy, and suppressed nonradiative recombination. Compared to the ZnO-SnO<sub>2</sub> bilayer ETL, the ZnO-MgO-SnO<sub>2</sub> multilayer ETL demonstrated a 142% improvement in photoelectric conversion efficiency. Finite element analysis from a microscopic perspective revealed the influence of MgO on carrier concentration. Additionally, first-principles calculations elucidated the transition of MgO from an insulator to a wide-bandgap semiconductor as it transformed from bulk crystal to nanofilm. The ZnO-MgO-SnO<sub>2</sub> multilayer model explained the changes in the energy band structure of the multilayer ETL, providing a theoretical foundation for continuously enhancing the photoelectric conversion efficiency of PSCs.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 15","pages":"7491–7500 7491–7500"},"PeriodicalIF":5.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842290","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}
引用次数: 0
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