Nanomaterials最新文献_第3页

A Review on Recently Developed Antibacterial Composites of Inorganic Nanoparticles and Non-Hydrogel Polymers for Biomedical Applications. 最新开发的无机纳米粒子和非水凝胶聚合物抗菌复合材料在生物医学中的应用综述。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-31 DOI: 10.3390/nano14211753

Anastasiia V Shabalina, Valeriy A Kozlov, Ivan A Popov, Sergey V Gudkov

引用次数: 0

First-Principles Study on Strain-Induced Modulation of Electronic Properties in Indium Phosphide. 磷化铟电子特性应变调制的第一原理研究

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-31 DOI: 10.3390/nano14211756

Libin Yan, Zhongcun Chen, Yurong Bai, Wenbo Liu, Huan He, Chaohui He

{"title":"First-Principles Study on Strain-Induced Modulation of Electronic Properties in Indium Phosphide.","authors":"Libin Yan, Zhongcun Chen, Yurong Bai, Wenbo Liu, Huan He, Chaohui He","doi":"10.3390/nano14211756","DOIUrl":"10.3390/nano14211756","url":null,"abstract":"Indium phosphide (InP) is widely utilized in the fields of electronics and photovoltaics due to its high electron mobility and high photoelectric conversion efficiency. Strain engineering has been extensively employed in semiconductor devices to adjust physical properties and enhance material performance. In the present work, the band structure and electronic effective mass of InP under different strains are investigated by ab initio calculations. The results show that InP consistently exhibits a direct bandgap under different strains. Both uniaxial strain and biaxial tensile strain exhibit linear effects on the change in bandgap values. However, the bandgap of InP is significantly influenced by uniaxial compressive strain and biaxial tensile strain, respectively. The study of the InP bandgap under different hydrostatic pressures reveals that InP becomes metallic when the pressure is less than -7 GPa. Furthermore, strain also leads to changes in effective mass and the anisotropy of electron mobility. The studies of electronic properties under different strain types are of great significance for broadening the application of InP devices.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 21","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547734/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Recent Progress in Nanomaterial-Based Surface-Enhanced Raman Spectroscopy for Food Safety Detection. 基于纳米材料的表面增强拉曼光谱用于食品安全检测的最新进展。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-31 DOI: 10.3390/nano14211750

Hagar S Bahlol, Jiawen Li, Jiamin Deng, Mohamed F Foda, Heyou Han

引用次数: 0

Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites. 金属卤化物过氧化物中光诱导电荷载流子的动力学。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-30 DOI: 10.3390/nano14211742

András Bojtor, Dávid Krisztián, Ferenc Korsós, Sándor Kollarics, Gábor Paráda, Márton Kollár, Endre Horváth, Xavier Mettan, Bence G Márkus, László Forró, Ferenc Simon

{"title":"Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites.","authors":"András Bojtor, Dávid Krisztián, Ferenc Korsós, Sándor Kollarics, Gábor Paráda, Márton Kollár, Endre Horváth, Xavier Mettan, Bence G Márkus, László Forró, Ferenc Simon","doi":"10.3390/nano14211742","DOIUrl":"10.3390/nano14211742","url":null,"abstract":"The measurement and description of the charge-carrier lifetime (τc) is crucial for the wide-ranging applications of lead-halide perovskites. We present time-resolved microwave-detected photoconductivity decay (TRMCD) measurements and a detailed analysis of the possible recombination mechanisms including trap-assisted, radiative, and Auger recombination. We prove that performing injection-dependent measurement is crucial in identifying the recombination mechanism. We present temperature and injection level dependent measurements in CsPbBr3, which is the most common inorganic lead-halide perovskite. In this material, we observe the dominance of charge-carrier trapping, which results in ultra-long charge-carrier lifetimes. Although charge trapping can limit the effectiveness of materials in photovoltaic applications, it also offers significant advantages for various alternative uses, including delayed and persistent photodetection, charge-trap memory, afterglow light-emitting diodes, quantum information storage, and photocatalytic activity.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 21","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547212/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Combined Toxicity of Multi-Walled Carbon Nanotubes and Cu²⁺ on the Growth of Ryegrass: Effect of Surface Modification, Dose, and Exposure Time Pattern. 多壁碳纳米管和 Cu2+ 对黑麦草生长的联合毒性：表面改性、剂量和暴露时间模式的影响。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-30 DOI: 10.3390/nano14211746

Wenwen Xie, Cheng Peng, Weiping Wang, Xiaoyi Chen, Jiaqi Tan, Wei Zhang

{"title":"Combined Toxicity of Multi-Walled Carbon Nanotubes and Cu2+ on the Growth of Ryegrass: Effect of Surface Modification, Dose, and Exposure Time Pattern.","authors":"Wenwen Xie, Cheng Peng, Weiping Wang, Xiaoyi Chen, Jiaqi Tan, Wei Zhang","doi":"10.3390/nano14211746","DOIUrl":"10.3390/nano14211746","url":null,"abstract":"The escalating release of multi-walled carbon nanotubes (MWCNTs) into the environment has raised concerns due to their potential ecotoxicological impacts. However, their combined phytotoxicity with heavy metals such as copper (Cu) is still unclear. This study investigated the individual and combined toxic effects of MWCNTs (MWCNT, MWCNT-OH, and MWCNT-COOH) and Cu2+ on ryegrass (Lolium multiflorum), uniquely considering different addition orders. The results show that Cu severely inhibited the growth of ryegrass while MWCNTs exhibited a hormesis effect on ryegrass. When MWCNT and Cu were combined, the malondialdehyde (MDA) content in ryegrass showed a 32.39% increase at 20 mg/L MWCNT exposure, suggesting reduced oxidative stress. However, at the higher concentration of 1000 mg/L, it led to a significant 75.22% reduction in ryegrass biomass. MWCNT-COOH had the most pronounced effect, reducing the total chlorophyll content by 39.76% compared to unmodified MWCNT and by 10.67% compared to MWCNT-OH (500 mg/L). Additionally, pre-induced MWCNTs might alleviate the Cu in the plant by 23.08-35.38% through adsorption in the nutrient solution. Small molecule organic acids and amino acids primarily mediated the response to environmental stress in ryegrass. This research provides crucial insights into understanding the complex interactions of MWCNT and Cu2+ and their combined effects on plant ecosystems.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 21","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547606/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Heterogeneous Catalytic Ozonation of Pharmaceuticals: Optimization of the Process by Response Surface Methodology. 药物的异相催化臭氧处理：响应面方法优化工艺。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-30 DOI: 10.3390/nano14211747

Nikoletta Tsiarta, Wolfgang Gernjak, Hrvoje Cajner, Gordana Matijašić, Lidija Ćurković

{"title":"Heterogeneous Catalytic Ozonation of Pharmaceuticals: Optimization of the Process by Response Surface Methodology.","authors":"Nikoletta Tsiarta, Wolfgang Gernjak, Hrvoje Cajner, Gordana Matijašić, Lidija Ćurković","doi":"10.3390/nano14211747","DOIUrl":"10.3390/nano14211747","url":null,"abstract":"Batch heterogeneous catalytic ozonation experiments were performed using commercial and synthesized nanoparticles as catalysts in aqueous ozone. The transferred ozone dose (TOD) ranged from 0 to 150 μM, and nanoparticles were added in concentrations between 0 and 1.5 g L-1, with all experiments conducted at 20 °C and a total volume of 240 mL. A Ce-doped TiO2 catalyst (1% molar ratio of Ce/Ti) was synthesized via the sol-gel method. Response surface methodology (RSM) was applied to identify the most significant factors affecting the removal of selected pharmaceuticals, with TOD emerging as the most critical variable. Higher TOD resulted in greater removal efficiencies. Furthermore, it was found that the commercially available metal oxides α-Al2O3, Mn2O3, TiO2, and CeO2, as well as the synthesized CeTiOx, did not increase the catalytic activity of ozone during the degradation of ibuprofen (IBF) and para-chlorobenzoic acid (pCBA). Carbamazepine (CBZ) and diclofenac (DCF) are compounds susceptible to ozone oxidation, thus their complete degradation at 150 μM transferred ozone dose was attained. The limited catalytic effect was attributed to the rapid consumption of ozone within the first minute of reaction, as well as the saturation of catalyst active sites by water molecules, which inhibited effective ozone adsorption and subsequent hydroxyl radical generation (●OH).","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 21","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547524/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Twisted Nanographenes with Robust Conformational Stability. 具有稳健构象稳定性的扭曲纳米石墨烯。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-30 DOI: 10.3390/nano14211737

Penghui Song, Yoshifumi Hashikawa, Chaolumen

引用次数: 0

Effect of Thermal Processing on the Structural and Magnetic Properties of Epitaxial Co₂FeGe Films. 热处理对外延 Co2FeGe 薄膜结构和磁性能的影响

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-30 DOI: 10.3390/nano14211745

Andrii Vovk, Dariia Popadiuk, Bogdan Postolnyi, Sergey Bunyaev, Pavel Štrichovanec, José Ángel Pardo, Pedro Antonio Algarabel, Olga Salyuk, Vladislav Korenivski, Gleb N Kakazei, Vladimir O Golub, João Pedro Araujo

{"title":"Effect of Thermal Processing on the Structural and Magnetic Properties of Epitaxial Co2FeGe Films.","authors":"Andrii Vovk, Dariia Popadiuk, Bogdan Postolnyi, Sergey Bunyaev, Pavel Štrichovanec, José Ángel Pardo, Pedro Antonio Algarabel, Olga Salyuk, Vladislav Korenivski, Gleb N Kakazei, Vladimir O Golub, João Pedro Araujo","doi":"10.3390/nano14211745","DOIUrl":"10.3390/nano14211745","url":null,"abstract":"The structure and magnetic properties of epitaxial Heusler alloy films (Co2FeGe) deposited on MgO (100) substrates were investigated. Films of 60 nm thickness were prepared by magnetron co-sputtering at different substrate temperatures (TS), and those deposited at room temperature were later annealed at various temperatures (Ta). X-ray diffraction confirmed (001) [110] Co2FeGe || (001) [100] MgO epitaxial growth. A slight tetragonal distortion of the film cubic structure was found in all samples due to the tensile stress induced by the mismatch of the lattice parameters between Co2FeGe and the substrate. Improved quality of epitaxy and the formation of an atomically ordered L21 structure were observed for films processed at elevated temperatures. The values of magnetization increased with increasing TS and Ta. Ferromagnetic resonance (FMR) studies revealed 45° in-plane rotation of the easy anisotropy axis direction depending on the degree of the tetragonal distortion. The film annealed at Ta = 573 K possesses the minimal FMR linewidth and magnetic damping, while both these parameters increase for another TS and Ta. Overall, this study underscores the crucial role of thermal treatment in optimizing the magnetic properties of Co2FeGe films for potential spintronic and magnonic applications.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 21","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547484/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Enhancing Mechanical and Tribological Properties of Epoxy Composites with Ultrasonication Exfoliated MoS₂: Impact of Low Filler Loading on Wear Performance and Tribofilm Formation. 用超声剥离的 MoS2 增强环氧树脂复合材料的机械和摩擦学性能：低填充量对磨损性能和三膜形成的影响。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-30 DOI: 10.3390/nano14211744

Ravisrini Jayasinghe, Maximiano Ramos, Ashveen Nand, Maziar Ramezani

{"title":"Enhancing Mechanical and Tribological Properties of Epoxy Composites with Ultrasonication Exfoliated MoS2: Impact of Low Filler Loading on Wear Performance and Tribofilm Formation.","authors":"Ravisrini Jayasinghe, Maximiano Ramos, Ashveen Nand, Maziar Ramezani","doi":"10.3390/nano14211744","DOIUrl":"10.3390/nano14211744","url":null,"abstract":"This study highlights the impact of low amounts of MoS2 quantities on composite performance by examining the effects of ultrasonication exfoliated MoS2 at different loadings (0.1-0.5 wt%) on the mechanical and tribological parameters of epoxy composites. Even at low concentrations, the ultrasonication and exfoliation procedures greatly improve the dispersion of MoS2 in the epoxy matrix, enabling its efficient incorporation into the tribofilm during sliding. Optimum mechanical properties were demonstrated by the MoS2/epoxy composite at 0.3 wt%, including a modulus of elasticity of 0.86 GPa, an ultimate tensile strength of 61.88 MPa, and a hardness of 88.0 Shore D, representing improvements of 61.5%, 35.45%, and 16.21%, respectively. Corresponding tribological tests revealed that high sliding velocity (10 N load, 0.2 m/s) resulted in a 44.07% reduction in the coefficient of friction and an 86.29% reduction in wear rate compared to neat epoxy. The enhanced tribological performance is attributed to the efficient removal and incorporation of MoS2 into the tribofilm, where it acts as a solid lubricant that significantly reduces friction and wear. Even though an ultra-low amount of filler concentration was added to the composite, a unique finding was the high MoS2 content in the tribofilm at higher sliding speeds, enhancing lubrication and wear protection. This study establishes that even ultralow MoS2 content, when uniformly dispersed, can profoundly improve the mechanical and tribological properties of epoxy composites, offering a novel approach to enhancing wear resistance.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 21","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547901/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Influence of PCBM Nanocrystals on the Donor-Acceptor Polymer Ultraviolet Phototransistors. PCBM 纳米晶体对供体-受体聚合物紫外线光电晶体管的影响。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-30 DOI: 10.3390/nano14211748

Hong Zhu, Quanhua Chen, Lijian Chen, Rozalina Zakaria, Min-Su Park, Chee Leong Tan, Li Zhu, Yong Xu

{"title":"Influence of PCBM Nanocrystals on the Donor-Acceptor Polymer Ultraviolet Phototransistors.","authors":"Hong Zhu, Quanhua Chen, Lijian Chen, Rozalina Zakaria, Min-Su Park, Chee Leong Tan, Li Zhu, Yong Xu","doi":"10.3390/nano14211748","DOIUrl":"10.3390/nano14211748","url":null,"abstract":"Organic phototransistors, renowned for their exceptional biocompatibility, hold promise in phototherapy for tracking the efficacy of photosensitive drugs within treatment areas. Nevertheless, it has been found that organic semiconductors are less effective in detecting ultraviolet (UV) light because of their narrow bandgap. Here, we show that UV photodetection in phototransistors using donor-acceptor (D-A) polymer semiconductors can be significantly enhanced by incorporating PCBM nanocrystals. This integration results in a band mismatch between the nanocrystals and the D-A polymer at the interface. These nanocrystals also demonstrate a notable capability of modulating threshold voltage under UV light. The devices incorporating nanocrystals exhibit a photoresponsivity of 0.16 A/W, surpassing the photoresponsivity of the devices without nanocrystals by 50%. The specific detection rate of devices with nanocrystals is around 2.00 × 1010 Jones, which is twice as high as that of devices without nanocrystals. The presented findings offer a potential avenue to improve the efficiency of polymer phototransistors for UV detection.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 21","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547190/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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