ACS Applied Nano Materials最新文献

Room-Temperature Synthesis of Au@AuCu Alloyed Nanorods in Aqueous Solutions for High Catalytic Activity and Enhanced Stability 在水溶液中室温合成 Au@AuCu 合金纳米棒，提高催化活性和稳定性

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-20 DOI: 10.1021/acsanm.4c04263

Lishuai Hao, Ningneng Hu, Le Wang, Henglei Jia, Weihai Ni

{"title":"Room-Temperature Synthesis of Au@AuCu Alloyed Nanorods in Aqueous Solutions for High Catalytic Activity and Enhanced Stability","authors":"Lishuai Hao, Ningneng Hu, Le Wang, Henglei Jia, Weihai Ni","doi":"10.1021/acsanm.4c04263","DOIUrl":"https://doi.org/10.1021/acsanm.4c04263","url":null,"abstract":"Cu-based nanocrystals are desirable for high efficiency catalysis, although they are easily oxidized under ambient conditions. Alloying Au and Cu provides the strategy for Cu-contained nanocrystals toward both high stability and high catalytic activity. However, a synthetic method of homogeneous alloy nanocrystals with tunable composition in aqueous solutions is lacking. Specific composition for achieving both enhanced stability and high catalytic activity remains elusive. Herein, coreduction of Au3+ and Cu2+ was performed through controlling the kinetics of the coreduction to form AuCu alloyed shells on the Au nanorod (NR) cores and obtain Au@AuCu NRs under the protection of nitrogen. The Cu atomic fraction (atom %) of the shell was finely tuned from 0 to 100% by controlling the fraction of Cu2+ cations in the growth solution. For Au@Au0.85Cu0.15 NRs, epitaxial growth of AuCu alloy on the Au NR was evidenced with about 4.0% lattice mismatch due to Cu alloying in the Au lattice by high-resolution transmission electron microscopy. Au@AuCu NRs with different aspect ratios were also obtained for tuning longitudinal plasmonic resonance. Stability characterization indicates that the Au@AuCu NRs with Cu atom % in the shell lower than 15% are of enhanced stability, while an increase in Cu atom % in the shell from 0 to 15.3 and 100% leads to dramatic reduction of the activation energy, Ea, of p-nitroaniline from 111 to 45 and 33 kJ/mol, respectively. Therefore, Au@Au0.85Cu0.15 NRs are preferable for high catalytic activity and enhanced stability.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267600","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 High Quantum Efficiency in Cs3Cu2I5 Nanocrystals by the A-Site Ion Substitution for Flexible Blue Electroluminescence Devices and Enhanced Photovoltaic Cells 通过 A-位离子置换实现 Cs3Cu2I5 纳米晶体的高量子效率，用于柔性蓝色电致发光器件和增强型光伏电池

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-20 DOI: 10.1021/acsanm.4c04442

Xiu-Rong Yuan, Xiao-Song Zhang, Xing-Yao Zhao, Xiao-Kai Gong, Li−Na Kong, Bao-Zeng Zhou, Jian-Ping Xu, Lan Li

{"title":"Achieving High Quantum Efficiency in Cs3Cu2I5 Nanocrystals by the A-Site Ion Substitution for Flexible Blue Electroluminescence Devices and Enhanced Photovoltaic Cells","authors":"Xiu-Rong Yuan, Xiao-Song Zhang, Xing-Yao Zhao, Xiao-Kai Gong, Li−Na Kong, Bao-Zeng Zhou, Jian-Ping Xu, Lan Li","doi":"10.1021/acsanm.4c04442","DOIUrl":"https://doi.org/10.1021/acsanm.4c04442","url":null,"abstract":"The outstanding photovoltaic characteristics of lead halide perovskites have made them a potential class of materials for upcoming optoelectronic applications. However, a major obstacle to the practical use of lead halide perovskites is the inherent toxicity and low environmental stability of lead. The exploration and development of nontoxic and stable alternatives for lead halide perovskites has therefore become an urgent and critical goal in the field of photovoltaics. In this paper, blue lead-free Cs3Cu2I5 nanocrystals (NCs) with bright emission were prepared by using KI as a metal additive through an improved thermal injection strategy. A breakthrough in the previous photoluminescence quantum (PLQY) yield of 97.2% was achieved when the content of KI was optimized to be 8%. Detailed experimental and theoretical studies have also been combined to conclude that the KI additive acts to passivate surface defects and that the broad-spectrum blue emission originates from self-trapped excitons. When combined with commercial indium tin oxide (ITO), the device may achieve broad-spectrum blue electroluminescence. Its low production cost and simple structure are its main features. Furthermore, we were able to improve the utilization of high-energy ultraviolet energy and overcome the weak absorption of short-wavelength silicon-based solar cells by using nanocrystals as down-conversion luminescent materials in conjunction with silicon-based solar cells. This increased the photoelectric conversion efficiency (PCE) for the solar cells through approximately 0.5%. The result was achieved through the principle of down-conversion. Therefore, fully inorganic metal halide Cs3Cu2I5: K+ nanocrystals have great potential for future electroluminescence and photovoltaic applications.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267692","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

Covalent Organic Framework-Incorporated MAPbI3 for Inverted Perovskite Solar Cells with Enhanced Efficiency and Stability 共价有机框架掺杂 MAPbI3，用于提高效率和稳定性的反相包光体太阳能电池

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c04301

Chen-Wei Wu, Cheng En Cai, Yen-Chung Feng, Zi-Ting Chen, Bo-Tau Liu, Hongta Yang, Shing-Yi Suen, Da-Wei Kuo, Rong-Ho Lee

{"title":"Covalent Organic Framework-Incorporated MAPbI3 for Inverted Perovskite Solar Cells with Enhanced Efficiency and Stability","authors":"Chen-Wei Wu, Cheng En Cai, Yen-Chung Feng, Zi-Ting Chen, Bo-Tau Liu, Hongta Yang, Shing-Yi Suen, Da-Wei Kuo, Rong-Ho Lee","doi":"10.1021/acsanm.4c04301","DOIUrl":"https://doi.org/10.1021/acsanm.4c04301","url":null,"abstract":"The study synthesized triazine-based covalent organic framework (COF) materials (TPTP-COF, TPBT-COF, and TPBTz-COF) to be used as defect passivation additives in methylammonium lead iodide (MAPbI3)-based inverted perovskite solar cells (PVSCs). The frameworks of the COFs in the MAPbI3 layer can serve as a template for the crystal growth of perovskite, repairing crystal defects, enhancing the quality of the crystal film, and stabilizing perovskite materials. In addition to the conjugation intensity of the COFs, the average particle size of the COF in the precursor solution of the perovskite significantly influences the morphology, optical properties, and photovoltaic characteristics of the COF/MAPbI3 blend films used in PVCs. The crystal grain size, X-ray diffraction intensity, PL intensity, carrier lifetime, and charge mobility were improved in the MAPbI3 films when the COF was incorporated, particularly with the TPBTz-COF, compared to the original MAPbI3 film. The photovoltaic performance and stability of the PVSCs containing the COF were enhanced compared to the PVSCs based on pristine MAPbI3. The structure of the inverted PVSCs included indium tin oxide/NiOx/COF (TPTP-COF, TPBT-COF, or TPBTz-COF):MAPbI3/PC61BM/bathocuproine/Ag. TPBTz-COF exhibited the highest power conversion efficiency (PCE) among the COF additives, achieving a PCE of 20.04%, an open-circuit voltage of 1.04 V, a short-circuit current density of 24.26 mA cm–1, and a fill factor of 79.40%. The TPBTz-COF-based PVSC maintained 80% of its original power conversion efficiency after being stored for 400 h under ambient conditions (30 °C; 60% relative humidity).","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267690","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

Density Functional Theory and Machine Learning of Transition Metals in Mo2C for Gas Sensors 用于气体传感器的 Mo2C 中过渡金属的密度泛函理论与机器学习

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c04274

Weiguang Huang, Zhongzhou Dong, Long Lin

引用次数: 0

Magnetic Self-Assembled Fe3O4 Colloidal Nanocrystals in Structural Color Hydrogels for Environmental Humidity Monitoring 用于环境湿度监测的结构色水凝胶中的磁性自组装 Fe3O4 胶体纳米晶体

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c03486

Juanjuan Sun, Jingyan Liu, Jialing Tan, Hao Liu, Jiru Jia, Chaoxia Wang

{"title":"Magnetic Self-Assembled Fe3O4 Colloidal Nanocrystals in Structural Color Hydrogels for Environmental Humidity Monitoring","authors":"Juanjuan Sun, Jingyan Liu, Jialing Tan, Hao Liu, Jiru Jia, Chaoxia Wang","doi":"10.1021/acsanm.4c03486","DOIUrl":"https://doi.org/10.1021/acsanm.4c03486","url":null,"abstract":"The structural color hydrogel has attracted considerable attention due to its unique color-changing ability in response to external stimuli. It is committed to exploring possibilities in the fields of sensing, display, and anticounterfeiting and enhancing its functionality to achieve practical applications. In this study, structural color hydrogels are synthesized through the concurrent polymerization of Fe3O4 colloidal nanocrystals and gel monomers under an external magnetic field. In the presence of an external magnetic field, Fe3O4 colloidal nanocrystals rapidly assemble into 1D chain structures, creating structural colors. The hydrogel matrix stabilizes the one-dimensional chain structures, preserving the structural colors even after the external magnetic field is removed. As environmental humidity changes, the hydrogel absorbs water, expanding in volume and increasing the spacing between Fe3O4 colloidal nanocrystals, which results in a red shift. By adjusting the relative humidity (from 11% to 97%), the structural color hydrogel undergoes expansion, altering the distance between Fe3O4 colloidal nanocrystals, resulting in a color change from green to red, and the diffraction peak shifts from 494 to 720 nm, spanning a significant variation range of 226 nm, achieving humidity responsiveness. These findings will pave the way for the designing of desirable environmental humidity monitoring applicable in optical equipment, sensors, displays, etc.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267694","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

Nano-Structured Gel Materials for Environmental Remediation and Biomedical Applications 用于环境修复和生物医学应用的纳米结构凝胶材料

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c04684

Ritik, Sayantan Sarkar, Pragti, Nidhi Varshney, Amardeep Kumar, Maxim L. Kuznetsov, Hem Chandra Jha, Suman Mukhopadhyay

{"title":"Nano-Structured Gel Materials for Environmental Remediation and Biomedical Applications","authors":"Ritik, Sayantan Sarkar, Pragti, Nidhi Varshney, Amardeep Kumar, Maxim L. Kuznetsov, Hem Chandra Jha, Suman Mukhopadhyay","doi":"10.1021/acsanm.4c04684","DOIUrl":"https://doi.org/10.1021/acsanm.4c04684","url":null,"abstract":"The application of soft materials, including gels, in different material and biological chemistry domains has gained momentum in the past few years. Environmental remediation, drug resistance, and delivery are significant concerns that are being investigated widely nowadays. In this work, we report the multifunctionality of a gelator molecule A2 (5,5′-((6-(phenylamino)-1,3,5-triazine-2,4-diyl)bis(azanediyl))diisophthalic acid) in the gel state. The gelator molecule A2 was used to fabricate organogel and two metallogels using copper perchlorate and a Ru-based anticancer drug molecule, respectively. The organogel and Cu-metallogel show efficient adsorption capabilities of iodine in the vapor and solution phases. These iodine-loaded gel composites were utilized as efficient antibacterial agents against Escherichia coli and Helicobacter pylori (I10) bacterial strains. Additionally, owing to the pH-responsive nature of the gel material, the Ru-based anticancer drug-loaded metallogel, Ru-A2, was fabricated, and its activity in pH-responsive drug delivery to the cancerous cells was also investigated.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267698","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

Construction of ZnO/C3N4 Composite for Photocatalytic Activity through Charge Transfer

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c0441610.1021/acsanm.4c04416

Wei-Long Xu*, Erwei Du, Sisi Pang, Yuebin Lian and Min Zheng,

{"title":"Construction of ZnO/C3N4 Composite for Photocatalytic Activity through Charge Transfer","authors":"Wei-Long Xu*, Erwei Du, Sisi Pang, Yuebin Lian and Min Zheng, ","doi":"10.1021/acsanm.4c0441610.1021/acsanm.4c04416","DOIUrl":"https://doi.org/10.1021/acsanm.4c04416https://doi.org/10.1021/acsanm.4c04416","url":null,"abstract":"The photocatalyst based on the ZnO/C3N4 composite can harness the high carrier mobility of ZnO along with the visible light absorption characteristics of C3N4. The key to enhance photocatalytic performance through the synergistic effect of these two materials lies in the effective charge transfer. In this work, a combination of ultrasonic dispersion and hydrothermal method was employed to prepare a ZnO/C3N4 composite. The structure of this composite consists of C3N4 thin layers covering ZnO nanoparticles with a size of several tens of nanometers. Theoretical calculations combined with photoluminescence spectroscopy techniques confirmed that charge transfer occurs in ZnO/C3N4 staggered gap heterojunction, which reduces the recombination of photogenerated carriers and enhances the photocatalytic efficiency. The variations of charge-transfer efficiency in different regions of the ZnO/C3N4 composite were observed by spatially and temporally resolved fluorescence imaging measurements. The photocatalytic degradation of pollutants revealed that the optimal amount of C3N4 is 8%. It achieved an impressive 88% degradation efficiency of the pollutant within 100 min and the fastest degradation rate of 0.022 min–1 under the solar simulator. This high efficiency is closely associated with the tight integration between ZnO and C3N4 and their effective charge-transfer rates. Furthermore, the ZnO/C3N4 composite demonstrated a stable photocatalytic performance.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326012","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

Durable Silver/Polystyrene/Polydimethylsiloxane Films with Bright Structural Colors for Displays 用于显示器的具有明亮结构色的耐用银/聚苯乙烯/聚二甲基硅氧烷薄膜

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c04031

Xuan Wu, Weiguo Yan, Jianyu Yan, Wei Zhao, Wei Zhao

{"title":"Durable Silver/Polystyrene/Polydimethylsiloxane Films with Bright Structural Colors for Displays","authors":"Xuan Wu, Weiguo Yan, Jianyu Yan, Wei Zhao, Wei Zhao","doi":"10.1021/acsanm.4c04031","DOIUrl":"https://doi.org/10.1021/acsanm.4c04031","url":null,"abstract":"Structured colors have received a lot of attention due to their unique optical properties, and they have great potential for applications in areas such as energy-saving reflective displays, sensors, coatings, and optical components. However, large-scale manufacturing, low durability, and low color saturation limit their practical application to some extent. In this paper, the composite structure of a silver film/periodic particles/poly(dimethylsiloxane) (PDMS) (APPPC) colored film was designed by a simple and efficient self-assembly method. The self-assembly of polystyrene (PS) microspheres into an ordered structure can produce bright structural colors, and the Ag film as a reflective backing can increase the reflectivity and make the structural colors more saturated. A layer of PDMS on the surface improves the durability of the composite structure. The color of the structure can be modulated by changing the different diameters of the particles. By change of the rigid substrate to a flexible substrate, a flexible APPPC film with good flexibility can be prepared. The good durability and vibrant colors make it a great application prospect for land-based night-time traffic warnings and underwater warnings. The most important aspect of this study is that APPPC films can be prepared simply and quickly on a large area (25 × 25 cm2), making the mass production of a new generation of smart colored materials possible.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269645","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

Nano-Structured Gel Materials for Environmental Remediation and Biomedical Applications

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c0468410.1021/acsanm.4c04684

Ritik, Sayantan Sarkar, Pragti, Nidhi Varshney, Amardeep Kumar, Maxim L. Kuznetsov, Hem Chandra Jha and Suman Mukhopadhyay*,

{"title":"Nano-Structured Gel Materials for Environmental Remediation and Biomedical Applications","authors":"Ritik, Sayantan Sarkar,  Pragti, Nidhi Varshney, Amardeep Kumar, Maxim L. Kuznetsov, Hem Chandra Jha and Suman Mukhopadhyay*, ","doi":"10.1021/acsanm.4c0468410.1021/acsanm.4c04684","DOIUrl":"https://doi.org/10.1021/acsanm.4c04684https://doi.org/10.1021/acsanm.4c04684","url":null,"abstract":"The application of soft materials, including gels, in different material and biological chemistry domains has gained momentum in the past few years. Environmental remediation, drug resistance, and delivery are significant concerns that are being investigated widely nowadays. In this work, we report the multifunctionality of a gelator molecule A2 (5,5′-((6-(phenylamino)-1,3,5-triazine-2,4-diyl)bis(azanediyl))diisophthalic acid) in the gel state. The gelator molecule A2 was used to fabricate organogel and two metallogels using copper perchlorate and a Ru-based anticancer drug molecule, respectively. The organogel and Cu-metallogel show efficient adsorption capabilities of iodine in the vapor and solution phases. These iodine-loaded gel composites were utilized as efficient antibacterial agents against Escherichia coli and Helicobacter pylori (I10) bacterial strains. Additionally, owing to the pH-responsive nature of the gel material, the Ru-based anticancer drug-loaded metallogel, Ru-A2, was fabricated, and its activity in pH-responsive drug delivery to the cancerous cells was also investigated.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326016","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

Antimicrobial Efficacy of Cubic, Single-Leaf, and Flower-like Zeolitic Imidazolate Frameworks 立方体、单叶和花状沸石咪唑啉框架的抗菌功效

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c04025

Yanning Zhang, Shixin Cai, Xinzhang Li, Linpei Zhang, Menglu Li, Yuting Zhang, Xiaoli Wang, Nandi Zhou

{"title":"Antimicrobial Efficacy of Cubic, Single-Leaf, and Flower-like Zeolitic Imidazolate Frameworks","authors":"Yanning Zhang, Shixin Cai, Xinzhang Li, Linpei Zhang, Menglu Li, Yuting Zhang, Xiaoli Wang, Nandi Zhou","doi":"10.1021/acsanm.4c04025","DOIUrl":"https://doi.org/10.1021/acsanm.4c04025","url":null,"abstract":"Zeolite imidazolate frameworks (ZIFs) have been widely used in drug delivery and antibacterial applications due to their highly controllable structure and pore size. However, the relationship between the structure of ZIFs and their antibacterial efficacy has not been fully elucidated. In this study, three ZIFs with uniform sizes and specific morphologies were synthesized: cubic (Z-8), leaf-like (Z-L), and flower-like (FZ-L). Flow cytometry was employed to assess the effects of these materials on Bacillus subtilis and Escherichia coli at different concentrations and exposure times. Results showed that sharp-edged ZIFs possess enhanced antibacterial effects. Specifically, FZ-L exhibited the lowest minimum inhibitory concentration of 400 μg/mL and a minimum bactericidal concentration of 20 μg/mL, which can kill bacteria effectively and rapidly. Further study on the antibacterial mechanisms showed that these materials do not produce reactive oxygen species (ROS) themselves but induce ROS production in bacteria and accelerate bacterial death. Biocompatibility studies suggested that ZIFs have minimal toxicity to human cells, indicating their potential in biomedical applications. This research provides insights into the antibacterial mechanisms of ZIFs, which can support their development for antimicrobial use.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267603","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