ACS Applied Nano Materials最新文献

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An In Situ TEM Study of the Diffusivity of Gold Atoms in Nanocomposite Thin Films by Zirconia Co-Deposition: Implication for Neuromorphic Devices
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-20 DOI: 10.1021/acsanm.4c0599310.1021/acsanm.4c05993
Alberto Casu*, Claudio Melis, Giorgio Divitini, Filippo Profumo, Mattia Lizzano, Francesca Borghi, Yurii P. Ivanov, Riccardo Dettori, Luciano Colombo, Paolo Milani and Andrea Falqui*, 
{"title":"An In Situ TEM Study of the Diffusivity of Gold Atoms in Nanocomposite Thin Films by Zirconia Co-Deposition: Implication for Neuromorphic Devices","authors":"Alberto Casu*,&nbsp;Claudio Melis,&nbsp;Giorgio Divitini,&nbsp;Filippo Profumo,&nbsp;Mattia Lizzano,&nbsp;Francesca Borghi,&nbsp;Yurii P. Ivanov,&nbsp;Riccardo Dettori,&nbsp;Luciano Colombo,&nbsp;Paolo Milani and Andrea Falqui*,&nbsp;","doi":"10.1021/acsanm.4c0599310.1021/acsanm.4c05993","DOIUrl":"https://doi.org/10.1021/acsanm.4c05993https://doi.org/10.1021/acsanm.4c05993","url":null,"abstract":"<p >This study explores the thermal evolution and depercolation processes in nanocomposite gold and zirconia thin films with a focus on their potential applications in neuromorphic devices. The behavior of gold nanostructured thin films under thermal stimuli, with and without zirconia inclusions, was examined utilizing both <i>in situ</i> heating transmission electron microscopy, upon low electron dose conditions, and molecular dynamics simulations. The initial experiments on pure gold films revealed a progressive retraction of gold clusters starting just above 100 °C, driven by thermally activated solid-state dewetting. This process continued up to 1000 °C, resulting in a significant reduction of the substrate area covered by gold from 47 to 10%. Introducing zirconia into the gold films notably altered their thermal stability. Indeed, the presence of zirconia clusters limited the diffusivity of gold atoms, increasing the temperature threshold for depercolation and enhancing the film’s thermal stability. Molecular dynamics simulations corroborated these findings, showing a marked decrease in gold diffusivity when codeposited with zirconia: its inclusion reduced it by approximately a factor of 3, mainly due to zirconia’s high melting point. Finally, this stabilization effect was found to be more pronounced when experimentally observed in films with higher zirconia content, where the depercolation process was significantly impeded. These results highlight the potential of zirconia as a stabilizing agent in nanostructured materials, enhancing the thermal resilience of the nanostructured gold films. They provide a viable pathway to tuning the thermal behavior of gold in nanocomposite thin films, paving the way for the development of energy-efficient neuromorphic devices capable of dynamic topological changes and autonomous task execution.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"1762–1772 1762–1772"},"PeriodicalIF":5.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143089111","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
Combined Swelling and Metal Infiltration: Advancing Block Copolymer Pattern Control for Nanopatterning Applications
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-19 DOI: 10.1021/acsanm.4c0619710.1021/acsanm.4c06197
Eleanor Mullen*, Alberto Alvarez-Fernandez, Nadezda Prochukhan, Arantxa Davó-Quiñonero, Raman Bekarevich, Farzan Gity, Brendan Sheehan, Jhonattan Frank Baez Vasquez, Riley Gatensby, Ahmed Bentaleb, Alan Ward, Paul K. Hurley and Michael A. Morris*, 
{"title":"Combined Swelling and Metal Infiltration: Advancing Block Copolymer Pattern Control for Nanopatterning Applications","authors":"Eleanor Mullen*,&nbsp;Alberto Alvarez-Fernandez,&nbsp;Nadezda Prochukhan,&nbsp;Arantxa Davó-Quiñonero,&nbsp;Raman Bekarevich,&nbsp;Farzan Gity,&nbsp;Brendan Sheehan,&nbsp;Jhonattan Frank Baez Vasquez,&nbsp;Riley Gatensby,&nbsp;Ahmed Bentaleb,&nbsp;Alan Ward,&nbsp;Paul K. Hurley and Michael A. Morris*,&nbsp;","doi":"10.1021/acsanm.4c0619710.1021/acsanm.4c06197","DOIUrl":"https://doi.org/10.1021/acsanm.4c06197https://doi.org/10.1021/acsanm.4c06197","url":null,"abstract":"<p >Block copolymer (BCP) patterning is a well-established self-assembly technique for developing surfaces with regular and controllable nanosized features. This method relies on the microphase separation of a BCP film and subsequent infiltration with inorganic species. The BCP film serves as a template, leaving behind inorganic replicas when removed. BCP patterning offers a promising, cost-effective alternative to standard nanopatterning techniques, featuring fewer processing steps and reduced energy use. However, BCP patterning can be complex and challenging to control. Varying the structural characteristics of the polymeric template (feature sizes) requires careful and often challenging synthesis of bespoke BCPs with controllable molecular weights (<i>M</i><sub>w</sub>). To develop BCP patterning as a standard nanofabrication approach, a vapor-phase patterning (VPP) technology has been developed. VPP allows for the <i>simultaneous, single-step, selective swelling</i> of BCP nanodomains to precise feature sizes and morphologies while forming inorganic features by metallic precursor infiltration. Infiltration preserves the swollen arrangement, thus allowing for feature size selection without synthesizing BCPs with different <i>M</i><sub>w</sub>, simplifying the process. VPP has the potential to revolutionize nanopatterning techniques in industries such as optical materials, materials for energy storage, sensors, and semiconductors by providing a pathway to efficient, precise, and cost-effective BCP template patterning.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"1829–1842 1829–1842"},"PeriodicalIF":5.3,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.4c06197","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143088898","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
Copper–Nickel Bimetallic-Doped Nanospinel for Efficient Electrochemical Reduction of NO to NH3
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-17 DOI: 10.1021/acsanm.4c0611010.1021/acsanm.4c06110
Qi Fang, Shiying Fan, Xinyong Li* and Dongke Zhang, 
{"title":"Copper–Nickel Bimetallic-Doped Nanospinel for Efficient Electrochemical Reduction of NO to NH3","authors":"Qi Fang,&nbsp;Shiying Fan,&nbsp;Xinyong Li* and Dongke Zhang,&nbsp;","doi":"10.1021/acsanm.4c0611010.1021/acsanm.4c06110","DOIUrl":"https://doi.org/10.1021/acsanm.4c06110https://doi.org/10.1021/acsanm.4c06110","url":null,"abstract":"<p >Electrocatalytic reduction of nitric oxide (eNORR) represents a promising and sustainable resource strategy. The process is effective at both mitigating anthropogenic air pollution and producing ammonia (NH<sub>3</sub>) in a manner that is environmentally sustainable and reliant on renewable energy sources. In this study, a series of Cu, Ni metal A-site doped nanospinel composites Cu<sub><i>x</i></sub>Ni<sub>1–<i>x</i></sub>Co<sub>2</sub>O<sub>4</sub> (x = 0, 0.5, 0.9, 1) were synthesized as highly efficient electrocatalysts for NO reduction. The experimental results on catalytic activity showed that Cu<sub>0.5</sub>Ni<sub>0.5</sub>Co<sub>2</sub>O<sub>4</sub> exhibited a maximum Faraday efficiency (FE) of 92.73% at −0.9 V vs reversible hydrogen electrode (vs RHE), with NH<sub>3</sub> production rate of 99.12 mmol g<sup>–1</sup> h<sup>–1</sup> at room temperature. Microscopic characterization indicated that the distinctive nanorod structure effectively increased the surface area, promoted electron/ion transport, and exposed more active sites. X-ray photoelectron spectroscopy (XPS) results demonstrated that the interaction between the A-site metals could enhance charge transfer and inhibit the hydrogen evolution reaction (HER). The theoretical analysis comprehensively demonstrated that the enhanced catalytic efficiency of Cu<sub>0.5</sub>Ni<sub>0.5</sub>Co<sub>2</sub>O<sub>4</sub> was primarily attributed to the incorporation of Cu metal doping, which facilitated a modification in the electronic structure of NiCo<sub>2</sub>O<sub>4</sub>. Furthermore, the synergistic effect between Cu and Ni metal sites significantly facilitated the stable adsorption of the reaction intermediate <sup>*</sup>NHO on the catalyst surface. This work offers a theoretical guidance that facilitates the efficient and environmentally friendly synthesis of NH<sub>3</sub> and the design of spinel catalysts exhibiting superior performance.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"1806–1815 1806–1815"},"PeriodicalIF":5.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143089059","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
One-Pot Hydrothermal Synthesis of SrFe12O19 Nanoplate/Multi-Walled Carbon Nanotube Powders for Microwave Energy Consumption
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-17 DOI: 10.1021/acsanm.4c0591410.1021/acsanm.4c05914
Zhuolun Li, Xiaoxia Tian*, Jiafu Wang, Guodong Han, Yudeng Wang, Fan Wu, Yuheng Men and Shaobo Qu, 
{"title":"One-Pot Hydrothermal Synthesis of SrFe12O19 Nanoplate/Multi-Walled Carbon Nanotube Powders for Microwave Energy Consumption","authors":"Zhuolun Li,&nbsp;Xiaoxia Tian*,&nbsp;Jiafu Wang,&nbsp;Guodong Han,&nbsp;Yudeng Wang,&nbsp;Fan Wu,&nbsp;Yuheng Men and Shaobo Qu,&nbsp;","doi":"10.1021/acsanm.4c0591410.1021/acsanm.4c05914","DOIUrl":"https://doi.org/10.1021/acsanm.4c05914https://doi.org/10.1021/acsanm.4c05914","url":null,"abstract":"<p >The synthesis of SrFe<sub>12</sub>O<sub>19</sub>/MWCNT microwave absorbent nanocomposites was achieved by using a one-pot hydrothermal method, resulting in compounds of strontium ferrite nanoplates and multiwalled carbon nanotube (MWCNT). When the mass ratio of strontium ferrite to MWCNTs is 6:1, the SrFe<sub>12</sub>O<sub>19</sub>/MWCNTs nanopowder represented the most significant reflective loss of −33.2 dB at 14.11 GHz while the material thickness is 1.48 mm. More importantly, the nanopowder reaches an efficacious absorbing bandwidth of about 3.96 GHz with a thickness of 1.35 mm, which could lead to a relatively low mass, thus demonstrating its potential for utilization as a lightweight and highly efficient wave-absorbing coating. The findings offer a valuable reference point for the subsequent synthesis of wave-absorbing materials.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"1738–1748 1738–1748"},"PeriodicalIF":5.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143089455","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
First-Principles Calculations of Group-IV Carbide Quantum Dots and Single-Layer Heterojunctions with Optical Activity and Short-Wave Infrared Emission for Efficient Gas Sensing
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-17 DOI: 10.1021/acsanm.4c0625310.1021/acsanm.4c06253
Anirban Roy, Deep Mondal and Debnarayan Jana*, 
{"title":"First-Principles Calculations of Group-IV Carbide Quantum Dots and Single-Layer Heterojunctions with Optical Activity and Short-Wave Infrared Emission for Efficient Gas Sensing","authors":"Anirban Roy,&nbsp;Deep Mondal and Debnarayan Jana*,&nbsp;","doi":"10.1021/acsanm.4c0625310.1021/acsanm.4c06253","DOIUrl":"https://doi.org/10.1021/acsanm.4c06253https://doi.org/10.1021/acsanm.4c06253","url":null,"abstract":"<p >The recently successful large-area bottom-up synthesis of a two-dimensional honeycomb layer of silicon carbide (SiC) (<i>Phys. Rev. Lett.</i> <b>2023,</b> <i>130,</i> 076203) has unquestionably outstretched the conventional routes to tackle the intriguing underlying physics of graphene-like monolayers with diverse functional sectors. In this work, we have tailored group-IV carbide monolayers such as SiC, germanium carbide (GeC), and their single-layer heterojunction (<i>J. Appl. Phys.</i> <b>2022,</b> <i>132,</i> 184301) to have six stable quantum dots (QDs) and critically explored their electronic nature, magnetic edges, and electronic transitions with subsequent characterization of circular dichroism (CD) and high sensitivity toward environmentally hazardous gases through first principles. Quantum dots (QDs) with zigzag edges reveal their spin-split electronic nature with traces of fluorescence around the short-wave infrared (SWIR) region. Interestingly, polar QDs of SiC–GeC, however, display chiral nature with an asymmetric point group, which have been explored using vibrational and electronic circular dichroism. The presence of the junctions between two different carbides promptly enhances the gas sensitivity to 70%, which is significantly higher than its constituents, providing an alternate route map in extending the boundaries of the environment-friendly application sector.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"1852–1864 1852–1864"},"PeriodicalIF":5.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143089062","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
Achiral Plasmon Nanostructures for Identifying Single-Walled Carbon Nanotube Enantiomers via Enhancing Their Raman Optical Activity
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-17 DOI: 10.1021/acsanm.4c0658810.1021/acsanm.4c06588
Fanfan Lu, Guanghong Zhang, Lu Zhang*, Yifan Zhang, Yueweiying Wang, Jie Wang and Wending Zhang*, 
{"title":"Achiral Plasmon Nanostructures for Identifying Single-Walled Carbon Nanotube Enantiomers via Enhancing Their Raman Optical Activity","authors":"Fanfan Lu,&nbsp;Guanghong Zhang,&nbsp;Lu Zhang*,&nbsp;Yifan Zhang,&nbsp;Yueweiying Wang,&nbsp;Jie Wang and Wending Zhang*,&nbsp;","doi":"10.1021/acsanm.4c0658810.1021/acsanm.4c06588","DOIUrl":"https://doi.org/10.1021/acsanm.4c06588https://doi.org/10.1021/acsanm.4c06588","url":null,"abstract":"<p >Single-walled carbon nanotube (SWCNT) enantiomers are useful for mechanism research and application exploration in optoelectronic components, integrated circuits, biophotonics, and other applications due to their tunable and uniformly responsive photoelectric properties. Herein, surface-enhanced Raman optical activity (ROA) was utilized to identify the structure and behavior of SWCNT enantiomers with a sensitivity of two to four SWCNTs/μm<sup>2</sup> driven by the achiral plasmon nanostructure. The achiral plasmon nanostructure with C<sub>6</sub> symmetry was adopted to convert far-field chiral light to significantly enhanced near-field light. The resultant Raman scattering intensities of SWCNT enantiomers with chiral indices of (7, 6) and (13, −6) have been increased ∼40 times by the achiral plasmon nanostructure compared with the SWCNT enantiomers dispersed on the silicon wafer by the same method. Thus, the difference of chiral near-field enhanced Raman scattering intensities of SWCNT enantiomers can break the limitation of the background noise to obtain the ROA spectra with vibrational-level information on target analytes. Our strategy provides a convenient and effective platform for identifying SWCNT enantiomers, as well as with extension function for ROA examination of molecular enantiomers.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"2000–2005 2000–2005"},"PeriodicalIF":5.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143089450","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
Diketopyrrolopyrrole-Based Nanoparticles with Near-Infrared Absorption for Tumor Photothermal Therapy
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-17 DOI: 10.1021/acsanm.5c0004010.1021/acsanm.5c00040
Tangyue Zheng, Hui Wen, Hongyu Wang, Qihang Wu*, Tingting Sun* and Zhigang Xie, 
{"title":"Diketopyrrolopyrrole-Based Nanoparticles with Near-Infrared Absorption for Tumor Photothermal Therapy","authors":"Tangyue Zheng,&nbsp;Hui Wen,&nbsp;Hongyu Wang,&nbsp;Qihang Wu*,&nbsp;Tingting Sun* and Zhigang Xie,&nbsp;","doi":"10.1021/acsanm.5c0004010.1021/acsanm.5c00040","DOIUrl":"https://doi.org/10.1021/acsanm.5c00040https://doi.org/10.1021/acsanm.5c00040","url":null,"abstract":"<p >Diketopyrrolopyrrole (DPP) is now widely used in the phototherapy of tumors, but most of the reported DPP molecules have no absorption in the near-infrared (NIR) region. In this study, 3 DPP derivatives with donor–acceptor–donor (D-A-D) structures were designed and synthesized, which were named OODPP, OSDPP, and SSDPP according to the number of thione groups. Their absorption spectra are gradually red-shifted with an increase in the number of thione groups. However, after the preparation of nanoparticles (NPs), OSDPP NPs show the maximum absorption red shift with an absorption peak at 786 nm and excellent photothermal performance under NIR laser irradiation. In addition, OSDPP NPs could more effectively inhibit tumor growth under irradiation. Therefore, this work provides a feasible method for the design of DPP-based phototherapeutic agents with red-shifted absorption for tumor therapy.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"2054–2061 2054–2061"},"PeriodicalIF":5.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143089225","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
Nanoscale Cu–Ag Heterostructures for CO2 Reduction to C2+ Products
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-17 DOI: 10.1021/acsanm.4c0633810.1021/acsanm.4c06338
Siying Zhang, Bowen Zhang, Shuaibing Yang, Tao Shao, Xiaohan Li, Rong Cao and Minna Cao*, 
{"title":"Nanoscale Cu–Ag Heterostructures for CO2 Reduction to C2+ Products","authors":"Siying Zhang,&nbsp;Bowen Zhang,&nbsp;Shuaibing Yang,&nbsp;Tao Shao,&nbsp;Xiaohan Li,&nbsp;Rong Cao and Minna Cao*,&nbsp;","doi":"10.1021/acsanm.4c0633810.1021/acsanm.4c06338","DOIUrl":"https://doi.org/10.1021/acsanm.4c06338https://doi.org/10.1021/acsanm.4c06338","url":null,"abstract":"<p >The electrochemical reduction of CO<sub>2</sub> (CO<sub>2</sub>RR) to value-added chemicals represents a critical strategy for mitigating carbon emissions and promoting energy sustainability. This study focuses on enhancing the CO<sub>2</sub> reduction performance of copper-based catalysts through silver doping, with the specific objective of improving C<sub>2+</sub> product selectivity and suppressing C<sub>1</sub> products. We report the delicate synthesis of three distinct CuAg Janus nanostructures using a coreduction method involving metal precursors for nucleation and growth. Compared to Cu NPs, CuAg Janus 1:0.02 exhibits significantly superior selectivity for both C<sub>2</sub>H<sub>4</sub> (∼50%) and multicarbon products (∼70%) at −1.2 V vs RHE in CO<sub>2</sub>RR. X-ray photoelectron spectroscopy (XPS) analysis reveals that the CuAg Janus nanostructure facilitates an electron transfer process, significantly influencing the catalytic activity and product selectivity of the CO<sub>2</sub> reduction reaction. In-situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy spectra indicate that CuAg Janus nanoparticles promote the formation of *CHO and *COCHO, which are key intermediates in the production of C<sub>2</sub>H<sub>4</sub> and enhancement of C–C coupling. This study provides an effective strategy for designing advanced tandem catalysts, paving the way for the widespread application of the CO<sub>2</sub>RR in addressing environmental and energy challenges.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"1893–1902 1893–1902"},"PeriodicalIF":5.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143088820","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
Cu-Doped MnO2 Nanoparticles Loaded with Docetaxel Synergistically Enhance Chemodynamic Therapy through Ferroptosis and Cuproptosis
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-17 DOI: 10.1021/acsanm.4c0648710.1021/acsanm.4c06487
Lekang Liu, Mingbo Shao, Luoyuan Guo, Wenjun Wang, Xiuwen Zheng* and Xiaolei Jiang*, 
{"title":"Cu-Doped MnO2 Nanoparticles Loaded with Docetaxel Synergistically Enhance Chemodynamic Therapy through Ferroptosis and Cuproptosis","authors":"Lekang Liu,&nbsp;Mingbo Shao,&nbsp;Luoyuan Guo,&nbsp;Wenjun Wang,&nbsp;Xiuwen Zheng* and Xiaolei Jiang*,&nbsp;","doi":"10.1021/acsanm.4c0648710.1021/acsanm.4c06487","DOIUrl":"https://doi.org/10.1021/acsanm.4c06487https://doi.org/10.1021/acsanm.4c06487","url":null,"abstract":"<p >We have developed an innovative Cu-doped and DTX-loaded Cu-MnO<sub>2</sub>@DTX@FA (MCDF) nanodrug designed to strategically alter tumor microenvironment (TME) by harnessing the synergistic effects of chemodynamic therapy (CDT), chemotherapeutic agents, and the induction of ferroptosis and cuproptosis. The MCDF nanodrug efficiently degrades, releasing abundant Mn<sup>4+</sup>, Cu<sup>2+</sup>, and DTX. The conversion of Cu<sup>2+</sup> to Cu<sup>+</sup> facilitated by FDX1 initiates cuproptosis, while, similar to Mn<sup>2+</sup>, Cu<sup>+</sup> reacts with hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) to generate hydroxyl radicals (·OH). Cu<sup>2+</sup> and Mn<sup>4+</sup> oxidize glutathione (GSH), significantly depleting GSH levels in tumor cells and inactivating GPX4, which further promotes ferroptosis. The release of Cu<sup>2+</sup> and Mn<sup>4+</sup> intensifies the cuproptosis. DTX effectively disrupts the cell division cycle, thereby inhibiting the proliferation and spread of tumor cells. The FA-modified MCDF is designed to evade immune detection while selectively targeting tumor tissues, ensuring precision in treatment delivery. This cutting-edge material not only provides a multifunctional therapeutic strategy but also sets the stage for the next generation of tumor-targeting nanomedicines.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"1965–1977 1965–1977"},"PeriodicalIF":5.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143089138","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
Size Engineering of Ni Nanoparticles via Dual Templates to Enhance Zinc–Iodine Batteries
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2025-01-16 DOI: 10.1021/acsanm.4c0659310.1021/acsanm.4c06593
Wei Huang, Zheng Lian, Ren Zou, Qi Wang, Usisipho Feleni, Emmanuel I. Iwuoha, Xinwen Peng* and Linxin Zhong*, 
{"title":"Size Engineering of Ni Nanoparticles via Dual Templates to Enhance Zinc–Iodine Batteries","authors":"Wei Huang,&nbsp;Zheng Lian,&nbsp;Ren Zou,&nbsp;Qi Wang,&nbsp;Usisipho Feleni,&nbsp;Emmanuel I. Iwuoha,&nbsp;Xinwen Peng* and Linxin Zhong*,&nbsp;","doi":"10.1021/acsanm.4c0659310.1021/acsanm.4c06593","DOIUrl":"https://doi.org/10.1021/acsanm.4c06593https://doi.org/10.1021/acsanm.4c06593","url":null,"abstract":"<p >Zinc–iodine (Zn–I<sub>2</sub>) batteries have received widespread attention due to their higher safety, rich resources, and eco-friendly features and show a promising potential for large-scale energy storage. Nevertheless, challenges such as the shuttle effect of polyiodides and sluggish redox kinetics of iodine species during charge and discharge processes hinder their development. This work reports an effective strategy to improve the electrochemical performance of Zn–I<sub>2</sub> batteries through the size engineering of nickel nanoparticles on biomass carbon. In situ UV and in situ Raman spectroscopies reveal that the dual-template size engineering strategy enables the catalyst to provide more active sites for adsorption and catalysis of iodine species, thereby enhancing the adsorption capacity of iodine species and accelerating the kinetics of I<sup>–</sup>/I<sub>2</sub> redox conversion reaction. The shuttle effect of polyiodides is also significantly inhibited. Consequently, Zn–I<sub>2</sub> batteries with the size-reduced catalyst as the iodine host cathode exhibit superior rate performance, low potential polarization, and long cycle life.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 4","pages":"1991–1999 1991–1999"},"PeriodicalIF":5.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143088603","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}
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