ACS Applied Nano Materials最新文献

{"title":"Enhanced Photovoltaic Performance and Stability of CsPbI3 Quantum Dots via Ligand Exchange and Compositional Defect Passivation","authors":"Yueli Liu,&nbsp;Tonghuan Gao,&nbsp;Zifan Yang,&nbsp;Huixin Zhu,&nbsp;Keqiang Chen,&nbsp;Yunan Bao and Wen Chen*,&nbsp;","doi":"10.1021/acsanm.5c0163710.1021/acsanm.5c01637","DOIUrl":"https://doi.org/10.1021/acsanm.5c01637https://doi.org/10.1021/acsanm.5c01637","url":null,"abstract":"<p >Inorganic CsPbI₃ perovskite quantum dots (PQDs) possess excellent optical properties, holding broad application prospects in the field of photovoltaics. However, the issues of a complex surface chemical environment and high compositional defect density for CsPbI₃ PQDs have severely influenced the performance of CsPbI₃ PQD solar cells (PQDSCs). Herein, the sequential treatment strategy based on the ligand exchange of trimethyliodosilane (TMIS) and the compositional defect regulation of formamidinium iodide (FAI) is introduced. Short-chain ligands of TMIS are used to replace the original ligands of CsPbI₃ PQDs and robustly anchor to the PQD surface, which guarantees the high stability and efficient charge carrier transport of CsPbI₃ PQDs. Furthermore, FAI is introduced by the vacancies and dangling bonds as the driving force on the PQD surface to passivate the defects of Cs and I vacancies while reducing the exciton binding energy and band gap of the CsPbI₃ PQDs. Consequently, the power conversion efficiency of PQDSCs is achieved to be 15.07%, which is greatly enhanced compared with that of the control device (12.09%), and only 26% of the initial efficiency is lost after aging under ambient conditions (20–30% RH) for 14 days.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"12047–12056 12047–12056"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269744","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":"Multibranched Magnetic Core–Shell Gold Nanostars for In Situ Solution-Based SERS Detection","authors":"Supriya Atta,&nbsp;Taylor L. Thorsen,&nbsp;Sebastian Sanchez,&nbsp;Yuanhao Zhao and Tuan Vo-Dinh*,&nbsp;","doi":"10.1021/acsanm.5c0234410.1021/acsanm.5c02344","DOIUrl":"https://doi.org/10.1021/acsanm.5c02344https://doi.org/10.1021/acsanm.5c02344","url":null,"abstract":"<p >Core–shell gold nanoparticles offer significant potential for enhancing surface-enhanced Raman spectroscopy (SERS) detection by integrating the elemental properties of both the core and shell materials. However, achieving an optimized core–shell nanoparticle system with uniformly distributed, densely packed hotspots for highly sensitive, direct in situ SERS detection of analytes remains a significant challenge. In this study, we introduce a simple, sensitive, and direct in situ SERS detection platform using multibranched magnetic core–shell gold nanostars (mGNS). This system capitalizes on the enhanced SERS signal from the branched nanostar morphology coupled with magnetic concentration effects, leading to a significantly amplified SERS response. The optimized mGNS-3, with ideal size and spike density, demonstrated the highest SERS enhancement using para-mercaptobenzoic acid (pMBA) as a model analyte. This solution-based magnetic SERS method achieved a detection limit of 1.5 nM, with the SERS signal being five times stronger than conventional SERS measurements. To showcase its practical utility, we employed the platform for the direct detection of ceftriaxone, an antibiotic, in milk without any sample preparation. The platform achieved a detection limit of 2.4 nM, which is significantly lower than the regulatory limits set by the USA and the European Union for antibiotic concentrations in milk. Overall, this magnetic SERS platform based on mGNS highlights its potential for highly sensitive antibiotic detection in point-of-care settings without the need for preprocessing.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"12393–12403 12393–12403"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269942","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":"Polyphosphazene-Functionalized Boron Nitride Nanosheets as a Multifunctional Synergist for Enhanced Thermal-Oxidative Stability and Fire Safety of EPDM Composites","authors":"Fangshan Li,&nbsp;Kaixiong Zhao,&nbsp;Yuchao Ke,&nbsp;Chun Yang,&nbsp;Bibo Wang,&nbsp;Fukai Chu*,&nbsp;Weizhao Hu*,&nbsp;Lei Song and Yuan Hu,&nbsp;","doi":"10.1021/acsanm.5c0204310.1021/acsanm.5c02043","DOIUrl":"https://doi.org/10.1021/acsanm.5c02043https://doi.org/10.1021/acsanm.5c02043","url":null,"abstract":"<p >Ethylene propylene diene monomer (EPDM) is widely used in automotive and HVAC sealing systems, where its long-term thermal-oxidative stability and fire safety are critical, yet challenged by high-temperature operation and flammability risks. To address these limitations, this work develops a surface-engineered boron nitride synergist (h-BN@PDT) through NaOH-assisted hydroxylation and subsequent functionalization with hexachlorocyclotriphosphazene and tannic acid. The modified h-BN@PDT integrates phosphorus/nitrogen flame-retardant groups and radical-scavenging phenolic hydroxyls, achieving multifunctional enhancements in EPDM composites. Thermal-oxidative aging tests (125 °C, 168 h) demonstrated exceptional stability, with 11.12 MPa of tensile strength for aged h-BN@PDT/EPDM, compared to 2.78 MPa of traditional flame-retardant EPDM without BN fillers. Doubling oxidation induction time was attributed to enhanced thermal conductivity and pyrolysis activation energy, which contributed to BN’s oriented heat-transfer pathways and phenolic hydroxyl-mediated radical quenching. Flame retardancy evaluations revealed that h-BN@PDT can effectively replace partial conventional flame retardants while enabling the composite to achieve a UL-94 V-0 rating with only 25 phr of flame-retardant loading. Cone calorimetry tests demonstrated a significantly reduced heat and smoke release rate. Mechanistic studies identified that h-BN@PDT enhances flame retardancy through the synergistic effects of the lamellar barrier effect and promoted catalytic charring capability. These mechanisms effectively inhibit heat transfer, block the diffusion of pyrolysis products, and restrict oxygen access, thereby substantially improving the flame-retardant efficiency of conventional systems. This work resolves the inherent trade-offs among flame retardancy, aging resistance, and mechanical integrity in EPDM, offering a scalable strategy for next-generation sealing materials in electric vehicles and high-temperature engineering applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"12283–12295 12283–12295"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269947","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":"Morphological Exploration of NiO Derived from Metal–Organic Frameworks with PdO for Hydrogen Gas Sensor†","authors":"Mohammad Yusuf,&nbsp;Chae Young Woo,&nbsp;Kwonho Jang,&nbsp;Khalid Usman,&nbsp;Seonghoon Han,&nbsp;Chanyong Yu,&nbsp;Hyung Ju Park,&nbsp;Hyung Woo Lee,&nbsp;Sungkyun Park and Kang Hyun Park*,&nbsp;","doi":"10.1021/acsanm.5c0174910.1021/acsanm.5c01749","DOIUrl":"https://doi.org/10.1021/acsanm.5c01749https://doi.org/10.1021/acsanm.5c01749","url":null,"abstract":"<p >As a promising clean-energy carrier, hydrogen requires highly sensitive and stable detection systems to ensure safety during its production, transportation, and storage. This paper presents the development of PdO-NiO composite gas sensors derived from metal–organic frameworks (MOFs) with controlled morphologies and p–p heterojunction structures. The PdO-NiO composites were synthesized via an MOF-derived method and calcined at varying temperatures to tailor their morphology and crystalline properties. Among the prepared materials, the PdO-NiO sensor calcined at 600 °C exhibited superior performance due to its hexagonal prism morphology and enhanced surface area, enabling efficient gas adsorption and desorption processes. The PdO-NiO-600 sensor demonstrated a high hydrogen response with rapid response and recovery times of 118 and 36 s, respectively, at 200 °C. The sensor exhibited excellent repeatability and stability. These results highlight the potential of PdO-NiO composites for hydrogen-sensing applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"12119–12129 12119–12129"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269949","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":"Tubular Micromotors Functionalized with Doxorubicin-Loaded Liposomes for Drug Delivery and Light-Triggered Release","authors":"Saki Batori,&nbsp; and ,&nbsp;Teruyuki Komatsu*,&nbsp;","doi":"10.1021/acsanm.5c0165210.1021/acsanm.5c01652","DOIUrl":"https://doi.org/10.1021/acsanm.5c01652https://doi.org/10.1021/acsanm.5c01652","url":null,"abstract":"<p >Micro/nanomotors hold great promise as self-propelled platforms for targeted drug delivery. In this study, we report the fabrication of urease (Ure)-powered polymer tube micromotors functionalized with doxorubicin-loaded liposomes (DoxL) on their outer surface (DoxL/Ure tube micromotors) and evaluate their light-triggered drug release and anticancer efficacy. The micromotors exhibited autonomous propulsion in a urea solution while retaining surface-adsorbed liposomes. Upon near-infrared (NIR) irradiation, localized photothermal heating elevated the temperature beyond the gel-to-liquid crystalline phase transition threshold of the liposomes, inducing rapid Dox release. When introduced into a urea-supplemented breast cancer cell culture, the self-propulsive motion of the micromotors enhanced the cell interactions. Subsequent NIR irradiation triggered localized Dox release near the cancer cells, resulting in efficient cell death. The DoxL/Ure tube micromotors, offering high-capacity drug loading and light-responsive, on-demand release, represent a promising biotechnological tool for precision-targeted cancer therapy.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"11763–11768 11763–11768"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269741","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":"Water-Dispersible Glassy Organic Dots Exhibiting Near-Infrared Delayed Emission for Bioimaging","authors":"Tinotenda R. Masvikeni,&nbsp;William L. Primrose,&nbsp;Sydney Mikulin and Zachary M. Hudson*,&nbsp;","doi":"10.1021/acsanm.5c0104910.1021/acsanm.5c01049","DOIUrl":"https://doi.org/10.1021/acsanm.5c01049https://doi.org/10.1021/acsanm.5c01049","url":null,"abstract":"<p >Red to near-infrared (NIR) emitting thermally activated delayed fluorescence (TADF) emitters and room temperature phosphorescence (RTP) emitters are attractive for time-gated biological imaging. Luminophores that emit red to NIR light can operate within the biological transparency window (650–1350 nm), enabling deeper penetration into tissue while also being easier to distinguish from cellular autofluorescence. Herein, we report a TADF emitter <b>NAI-Q-MeOTPA</b> and an RTP emitter <b>NAI-Py-MeOTPA</b> which incorporate the strong electron-donating group bis(4-methoxyphenyl)amine and strong acceptor cores quinoxaline-naphthalimide and pyrido[2,3-<i>b</i>]pyrazine-naphthalimide, respectively. Delayed emission was observed for both luminophores with emission maxima for <b>NAI-Q-MeOTPA</b> and <b>NAI-Py-MeOTPA</b> of 746 and 749 nm in toluene, respectively. When encapsulated into glassy organic dots (g-Odots), the luminophores still maintained NIR emission with significant delayed lifetimes. The <b>NAI-Q-MeOTPA</b> and <b>NAI-Py-MeOTPA</b> g-Odots were probed for bioimaging in HeLa cells in which g-Odot uptake was observed and demonstrated bioimaging capability in the 630–740 nm imaging window.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"11856–11864 11856–11864"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269766","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":"3D Flower-Petal-like CoCr-Layered Double Hydroxides Anchored on a 2D Vanadium Aluminum Carbide (V4AlC3) Substrate for High-Performance Extrinsic Supercapacitors","authors":"Vivek Mohan More,&nbsp;Chang-Min Yoon,&nbsp;Jeoung Han Kim and Jinsung Rho*,&nbsp;","doi":"10.1021/acsanm.4c0733910.1021/acsanm.4c07339","DOIUrl":"https://doi.org/10.1021/acsanm.4c07339https://doi.org/10.1021/acsanm.4c07339","url":null,"abstract":"<p >The uniquely integrated hybrid material, constituting of three-dimensional (3D) flower-petal-like CoCr-layered double hydroxides hybridized with a multilayered two-dimensional (2D) vanadium aluminum carbide (V₄AlC₃) substrate, by preserving the properties of each component owing to a synergistic effect, thereby improving the electrochemical performance. Herein, we have synthesized 3D flower-petal-like CoCr-LDH on a 2D V₄AlC₃ substrate nanocomposite via a hydrothermal synthesis route. The optimized CCVM-40 nanocomposite electrode exhibited hybrid charge storage with well-balanced capacitive performance, high rate capability, and charge transport as compared to CoCr-LDH. The nanocomposite of CoCr-LDH and V₄AlC₃ MAX can significantly enhance the electrochemical performance of pristine CoCr-LDH. The CoCr-LDH/V₄AlC₃ MAX nanocomposite displays a high specific surface area, an interconnected porous organ-like morphology, and intimate coupling between LDH nanosheets and the 2D layered V₄AlC₃ MAX. This unique architecture, along with strong interfacial interactions and synergistic effects between the layered V₄AlC₃ MAX and CoCr-LDH nanosheets, greatly improves electrical conductivity and increases the number of active sites accessible to the electrolyte. Moreover, the hybrid nanostructured composite prevents self-aggregation and restacking of the CoCr-LDH nanosheets onto V₄AlC₃ MAX, thereby assuring complete exposure of the active sites. The CCVM-40 nanocomposite demonstrates an excellent specific capacitance of 1375.9 F g^–1 at a scan rate of 2 mV s^–1, attributed to its unique hybrid nanostructure. Furthermore, the solid-state hybrid supercapacitor, fabricated using CCVM-40 as the battery-type electrode and activated carbon as the capacitive electrode, achieves a notable energy density of 85.41 W h kg^–1 at a power density of 1.1 kW kg^–1. Additionally, the hybrid supercapacitor device exhibits an outstanding capacitance retention rate of 90.8% after 8000 cycles at a current density of 6 A g^–1. Hence, it can be deduced from these exceptional results that additional research into these promising nanostructures with their excellent charge storage capabilities and unique microstructural traits is necessary for the development of next-generation energy storage devices.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"11774–11785 11774–11785"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269767","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":"Functional Tailoring of Polydopamine/Mn3O4 Nanoparticle Composites with Glutathione-Responsive Dissociation for Drug Delivery","authors":"Xueqing Li,&nbsp;Yulong Yan,&nbsp;Nannan Zhang,&nbsp;Xueling Liu and Xubo Zhao*,&nbsp;","doi":"10.1021/acsanm.5c0228410.1021/acsanm.5c02284","DOIUrl":"https://doi.org/10.1021/acsanm.5c02284https://doi.org/10.1021/acsanm.5c02284","url":null,"abstract":"<p >Polydopamine (PDA) has demonstrated remarkable potential in the biomedical field due to its excellent biocompatibility. Exploring functional PDA can further enhance its application in drug delivery systems (DDS). In this study, we present a facile one-pot fabrication method for GSH- responsive PDA nanoparticles (NPs) through in situ formation of Mn₃O₄. Following PEGylation, the resultant functional DDS ((Mn₃O₄/PDA)-PEG) was used to encapsulate the chemotherapy drug doxorubicin (DOX), yielding DOX-loaded (Mn₃O₄/PDA)-PEG NPs. The findings indicate that the incorporation of Mn₃O₄ significantly enhances the responsiveness of PDA to tumor microenvironment stimuli, enabling GSH-triggered controlled drug release at specific sites. Moreover, Mn₃O₄ effectively prevents premature drug release under normal physiological conditions. Consequently, leveraging the GSH-responsiveness of the DDS facilitates the disassembly of PDA NPs, thereby markedly improving the bioavailability and therapeutic efficacy of chemotherapy drugs. This work encourages us to continue to prepare polydopamine materials with multiple functions through rational additive substances to improve the bioavailability of chemotherapy drugs.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"12361–12369 12361–12369"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269810","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":"Synergistic Doping Effects of Y3+ and Co3+ on the Electrochemical Hydrogen Storage Property of Nanosized La1–xYxFe0.80Co0.20O3 as the Anode in Ni-MH Batteries","authors":"Shilong Sun,&nbsp;Guofang Zhang*,&nbsp;Ruiqin Zhang,&nbsp;Lingsheng Liu,&nbsp;Yiming Li,&nbsp;Zhuocheng Liu,&nbsp;Feng Hu,&nbsp;Jianyi Xu,&nbsp;Ruihua Guo,&nbsp;Zhiyong Yang,&nbsp;Lu Bai and Yanghuan Zhang,&nbsp;","doi":"10.1021/acsanm.5c0112810.1021/acsanm.5c01128","DOIUrl":"https://doi.org/10.1021/acsanm.5c01128https://doi.org/10.1021/acsanm.5c01128","url":null,"abstract":"<p >As one of the important ways to obtain electrochemical hydrogen storage, nickel–metal hydride batteries (Ni-MH) play an increasingly crucial role in the field of energy storage/conversion technology and will greatly enhance the strategic position of hydrogen energy in the energy market. However, with the development of modern society, the disadvantages of poor cycling stability and low discharge capacity at high temperatures that existed for the Ni-MH batteries have severely hindered their development. To solve these drawbacks, improving the stability and discharge capacity of the batteries has immense research values. In this work, Y³⁺ and Co³⁺ ions codoped nanosized La_1–<i>x</i>Y_<i>x</i>Fe_0.80Co_0.20O₃ (<i>x</i> = 0, 0.04, 0.08, 0.12, 0.16, 0.20) solid solutions were synthesized via the sol–gel method. X-ray diffraction pattern (XRD) indicates that the grain sizes and cell volumes of samples are reduced. Scanning and transmission electron microscopy (SEM, TEM) results reveal that the agglomeration degrees of the codoped samples are evidently alleviated, and the crystallite sizes are refined and distributed uniformly. Ultraviolet absorption spectra (UV–vis) indicate that the band gap energies of the doped samples are decreased. Raman spectra confirm that the addition of Y³⁺ ions enhances the content of the oxygen vacancies and defects in the lattices of samples. Electrochemical hydrogen storage results manifest that the electrochemical and the kinetic properties of the codoped samples are improved obviously. The maximum discharge capacity of the Y_0.12Co_0.20 sample reaches 464.7 mAh/g at 333 K and exhibits the most outstanding kinetic properties. H₂-TPR analysis illustrates that the catalyzed reaction activities of the codoped samples are significantly strengthened, and the hydrogen absorption capacity of the Y_0.12Co_0.20 sample is the highest. It is analyzed that the synergistic doping effects of the two ions, the concentrations of the oxygen vacancies and defects, the capabilities of the electron transition, and the grain sizes are the main factors that affect the hydrogen storage performance of the samples.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"11865–11878 11865–11878"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269771","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":"Organic Polymer-Based C-A-Fe Nanozyme for Dual-Sensitive Colorimetric Detection of Hg2+ and Cr6+","authors":"Qianyi Wu,&nbsp; and ,&nbsp;Mohammed Kamruzzaman*,&nbsp;","doi":"10.1021/acsanm.5c0190610.1021/acsanm.5c01906","DOIUrl":"https://doi.org/10.1021/acsanm.5c01906https://doi.org/10.1021/acsanm.5c01906","url":null,"abstract":"<p >The detection of mercury(II) (Hg²⁺) and chromium(VI) (Cr⁶⁺) is of significant importance due to their high toxicity and harmful effects on the environment and human health. Conventional detection methods are often expensive and time-consuming, highlighting the need for efficient alternatives. Nanozyme-based detection systems have emerged as promising solutions, offering high sensitivity, stability, and cost-effectiveness. However, many existing nanozymes contain toxic components, limiting their practical application in environmental and food safety monitoring. This study reported the development of an organic polymer-based C-A-Fe nanozyme, synthesized via a simple self-assembly chelation process and exhibiting peroxidase-like activity. This nanozyme enabled an effective colorimetric sensing approach for Hg²⁺ and Cr⁶⁺ detection. This nanozyme enables highly sensitive and selective colorimetric detection of Hg²⁺ and Cr⁶⁺ with the assistance of glutathione (GSH) and 8-hydroxyquinoline (8-HQ), achieving detection limits as low as 9.65 nM for Hg²⁺ and 4.13 nM for Cr⁶⁺. Moreover, the system demonstrated high recovery rates in tap water, cod, and spinach samples, confirming its potential for real-world applications in environmental and food safety monitoring.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"12210–12221 12210–12221"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269746","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}