Nano Materials Science最新文献

Application of nanomaterials in antifouling: A review 纳米材料在防污中的应用：综述

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2024.01.009

Nan Wang , Ruiyong Zhang , Kunpeng Liu , Yuxin Zhang , Xin Shi , Wolfgang Sand , Baorong Hou

With the continuous development of the marine economy and the upgrading of marine infrastructure, the increasing marine engineering equipment is facing a serious problem of marine fouling. However, developing marine antifouling materials and antifouling technologies is extremely difficult due to the complexity of the marine environment and the biodiversity of the fouling. Therefore, it is the key breakthrough to develop advanced materials for solving marine fouling problems. Nanomaterials with small dimensions and controlled micro-structure have outstanding antifouling efficiency and great promise for various antifouling fields. Herein, the development of antifouling nanomaterials and technologies in recent years are reviewed for aspects of types of antifouling nanomaterials, technologies of antifouling, and potential application of antifouling. The antifouling nanomaterials are categorized as non-metal-based nanomaterials, metal-based nanomaterials, polymeric nanomaterials, composite nanomaterials, and others. Additionally, the potential applications of antifouling nanomaterials, including marine antifouling, water treatment, and medical antifouling are discussed. Finally, we proposed the perspectives of research and development trends of the antifouling nanomaterials. This overview may promote the development of new efficient antifouling nanomaterials and develop their potential commercial applications.

随着海洋经济的不断发展和海洋基础设施的不断升级，日益增多的海洋工程装备面临着严重的海洋污损问题。然而，由于海洋环境的复杂性和污损生物的多样性，开发海洋防污材料和防污技术极为困难。因此，开发先进材料是解决海洋污损问题的关键突破口。尺寸小、微结构可控的纳米材料具有优异的防污效率，在各种防污领域大有可为。本文从防污纳米材料的种类、防污技术、防污的潜在应用等方面综述了近年来防污纳米材料和技术的发展。防污纳米材料分为非金属基纳米材料、金属基纳米材料、聚合物纳米材料、复合纳米材料和其他材料。此外，还讨论了防污纳米材料的潜在应用，包括海洋防污、水处理和医疗防污。最后，我们提出了防污纳米材料的研究和发展趋势展望。本综述可促进新型高效防污纳米材料的开发及其潜在的商业应用。

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引用次数: 0

2D SnSe2 micro-flower decorated with 0D In2O3 nanoparticles for low-temperature low-concentration TEA detection 用 0D In2O3 纳米粒子装饰的二维 SnSe2 微花，用于低温低浓度三乙醇胺检测

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2024.02.010

Li Wang , Jianpeng Li , Cheng Xu , Ziqin Yang , Xiangyun Tan , Zhihu Dong , Li Xu , Dongwei Zhang , Chunqing He

Triethylamine, a crucial industrial raw material, poses significant threats to both the ecosystem and human health. However, detecting lower concentrations of TEA remains an arduous task. In this study, we report the facile hydrothermal and ultrasonic treatment synthesis of 2D SnSe₂ micro-flower modified with 0D In₂O₃ nanoparticles to form SnSe₂/In₂O₃ heterojunctions for the first time. The SnSe₂/In₂O₃ sensor has a response value of 4.86 for 10 ppm TEA gas at 120 °C, with response and recovery times of 18 s and 79 s respectively, and detection limits as low as 100 ppb. In addition, the SnSe₂/In₂O₃ sensor is essentially unaffected by humidity in the 30% RH to 60% RH range, and the SnSe₂/In₂O₃ sensor response value decreases slightly in the 70% RH to 97% RH range, demonstrating excellent humidity tolerance. More importantly, the sensor maintained excellent cyclic-stability performance during a four-month cyclic stability test. The improved gas-sensitive performance can be attributed to the large number of n-n heterojunctions in the SnSe₂/In₂O₃ material, which enhances the interfacial charge transfer, as well as the active-sites on the material surface. This work serves as a valuable complement to the TEA gas sensor and holds significant potential for detecting low concentrations of TEA at low temperatures in environmental sensing applications.

三乙胺是一种重要的工业原料，对生态系统和人类健康都构成重大威胁。然而，检测较低浓度的三乙胺仍然是一项艰巨的任务。在这项研究中，我们首次报道了用 0D InO 纳米粒子修饰二维 SnSe 微花，形成 SnSe/InO 异质结的简便水热和超声处理合成方法。SnSe/InO 传感器在 120 °C 下对 10 ppm 三乙醇胺气体的响应值为 4.86，响应时间和恢复时间分别为 18 秒和 79 秒，检测限低至 100 ppb。此外，在 30% 相对湿度至 60% 相对湿度范围内，SnSe/InO 传感器基本上不受湿度的影响，而在 70% 相对湿度至 97% 相对湿度范围内，SnSe/InO 传感器的响应值会略有下降，这表明该传感器具有出色的耐湿性。更重要的是，该传感器在为期四个月的循环稳定性测试中保持了出色的循环稳定性能。气敏性能的提高可归因于 SnSe/InO 材料中大量的 n-n 异质结增强了界面电荷转移，以及材料表面的活性位点。这项工作是对三乙醇胺气体传感器的重要补充，在环境传感应用中低温检测低浓度三乙醇胺方面具有巨大潜力。

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引用次数: 0

Recent advances in self-lubricating metal matrix nanocomposites reinforced by carbonous materials: A review 碳材料增强的自润滑金属基纳米复合材料的最新进展：综述

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2024.02.007

Wenting Ye , Yeran Shi , Qing Zhou , Mingda Xie , Haifeng Wang , Benyebka Bou-Saïd , Weimin Liu

Metal matrix self-lubricating materials lie at the core of cutting-edge aerospace, mechanical, and electrical industries, which demand technological performances that cannot be met by traditional liquid lubricants. Rapid innovation in nanocarbon materials in recent years enabled rapid development of advanced nanocomposites for applications in structural engineering and functional devices. Carbonous materials (e.g., graphite, graphene and carbon nanotubes), exhibit a wide range of unique electrical, mechanical, and thermal properties, which are also considered ideal lubricating reinforcements for metal matrix nanocomposites (MMCs) with superior mechanical and tribological properties. In this review, we first showcase the distinctive features of the constituents commonly employed in self-lubricating MMCs, encompassing the high-strength metallic matrix and nano-carbonous reinforcement. Then, we present a comprehensive overview of the recent advancements in preparation techniques for these advanced MMCs, followed by an in-depth discussion on their corresponding tribological properties and wear mechanisms. We close this review by outlining key problems to be solved and the future trend of the development in self-lubricating MMCs.

金属基自润滑材料是尖端航空航天、机械和电气工业的核心，其技术性能要求是传统液体润滑剂无法满足的。近年来，纳米碳材料的快速创新使得应用于结构工程和功能设备的先进纳米复合材料得以迅速发展。碳材料（如石墨、石墨烯和碳纳米管）具有多种独特的电学、机械和热学特性，被认为是金属基纳米复合材料（MMC）的理想润滑增强材料，具有优异的机械和摩擦学特性。在这篇综述中，我们首先展示了自润滑 MMC 中常用成分的显著特点，包括高强度金属基体和纳米碳增强材料。然后，我们全面概述了这些先进 MMC 制备技术的最新进展，并深入探讨了其相应的摩擦学特性和磨损机理。最后，我们概述了自润滑 MMC 需要解决的关键问题和未来的发展趋势。

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引用次数: 0

The microstructural evolution and relaxation strengthening for nano-grained Ni upon low-temperature annealing 纳米晶粒镍低温退火后的微观结构演变和弛豫强化

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2023.12.007

Ze Chai , Bo Peng , Xukai Ren , Kaiyuan Hong , Xiaoqi Chen

The microstructural evolution and relaxation strengthening of nano-grained Ni annealed at a temperature range of 493–553 K were studied by in situ X-ray diffraction technique, transmission electron microscopy, and microhardness evaluation. Upon low-temperature annealing, the rather limited variations of anisotropic grain size and root-mean-square strain, conforming to an exponential relaxation model, yield a consistent activation energy of approximately 0.5 eV, which corresponds to the localized, rapid diffusion of excess vacancies on nonequilibrium surfaces/interfaces and/or defective lattice configurations. Microstructure examinations confirm the grain boundary ordering and excess defect reduction. The relaxation-induced strength enhancement can be attributed to the linear strengthening in the regime of small elastic lattice strains. This study provides an in-depth understanding of low-temperature nanostructural relaxation and its relation to strengthening.

引用次数: 0

Multilayer laminated Cu coil/CaO–Li2O–B2O3–SiO2 glass-ceramic preparation via a novel insulation packaging strategy for flat wire motor applications 通过新型绝缘封装策略制备多层叠层铜线圈/CaO-Li2O-B2O3-SiO2 玻璃陶瓷，用于扁线电机应用

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2024.02.002

Haitao Zhu , Yanyu Song , Guangyou Pan , Naibin Chen , Xiaoguo Song , Long Xia , Duo Liu , Shengpeng Hu

A new insulation packaging strategy for the stator windings of flat wire motors based on LTCC technology was studied for the first time. The study aimed to replace traditional plastic packaging methods and avoid aging issues by fabricating a novel multilayer laminated Cu coil/CaO–Li₂O–B₂O₃–SiO₂ glass-ceramic structure. The analysis of the interface microstructure of the laminated structure revealed that the CaO–Li₂O–B₂O₃–SiO₂ glass-ceramic matrix consisted of a crystalline phase of CaSiO₃ and an amorphous phase of SiO₂. The interface between the Cu coil and CaO–Li₂O–B₂O₃–SiO₂ glass-ceramic exhibited good bonding with no formation of secondary phases. Additionally, the strong bonding between the Cu coil and CaO–Li₂O–B₂O₃–SiO₂ glass-ceramic was attributed to the diffusion of Cu atoms at the interface. The novel multilayer laminated structure based on LTCC technology proposed in this study can help achieve high-reliability insulation packaging for the stator windings of future high-power density and miniaturized flat wire motors.

首次研究了基于 LTCC 技术的扁线电机定子绕组新型绝缘封装策略。该研究旨在通过制造一种新型多层层叠铜线圈/CaO-LiO-BO-SiO 玻璃陶瓷结构，取代传统的塑料封装方法并避免老化问题。对层压结构界面微观结构的分析表明，CaO-LiO-BO-SiO 玻璃陶瓷基体由 CaSiO 结晶相和 SiO 非晶相组成。铜线圈和 CaO-LiO-BO-SiO 玻璃陶瓷之间的界面结合良好，没有形成次生相。此外，Cu 线圈与 CaO-LiO-BO-SiO 玻璃陶瓷之间的牢固粘结还归因于界面上 Cu 原子的扩散。本研究提出的基于 LTCC 技术的新型多层层压结构有助于实现未来高功率密度和微型扁线电机定子绕组的高可靠性绝缘封装。

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引用次数: 0

Beyond contribution of ionic liquids in nanostructuring polyaniline morphology; its effect on the properties of the polymerization medium 离子液体在纳米聚苯胺形态结构中的作用及其对聚合介质性质的影响

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2023.12.001

Fatima Al-Zohbi , Fouad Ghamouss , Bruno Schmaltz , Mohamed Abarbri , Khalil Cherry , Mohamad fadel Tabcheh , François Tran-Van

In the present work, the focus has been shifted to the relationship between the PANI morphology and the physicochemical properties, controlled by the amount of added ionic liquids, of the polymerization medium instead of focusing on the structure of the ionic liquids as used to be in the litterature. For that reason, PANI has been synthesized in different weight ratio of [Pyrr][PTS]/water following the standard experimental process. The addition of [Pyrr][PTS] into the polymerization medium controls the morphology of PANI without affecting its structure. Moreover, [Pyrr][PTS] promotes a viscous reaction system without the need of an external source. The viscosity of the polymerization system restricts the diffusion of species that leads to the predominance of the homogeneous nucleation mode during the course of polymerization and, thus, nanostructuring of PANI morphology. As for the ionic conductivity, it reflects the mobility of the ions of the polymerization medium and, thus, the way of its interference with the formed PANI that affects the arrangement and the shape of formed PANI fibers. This relationship between PANI morphology and the physicochemical properties, adjusted by adding ionic liquids, of the polymerization medium is prelaminar and promising. The effect of the ionic liquids on the viscosity as well as on the mobility of the polymerization medium have to be taken into consideration to choose the ionic liquids, which lead to the PANI with desired morphology.

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引用次数: 0

High-performance self-driven broadband photoelectrochemical photodetector based on reduced graphene oxide/Bi2Te3 heterojunction 基于还原氧化石墨烯/Bi2Te3 异质结的高性能自驱动宽带光电化学光电探测器

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2023.12.008

Chenchen Zhao , Yangyang Liu , Dongbo Wang , Wen He , Bingke Zhang , Jingwen Pan , Zhi Zeng , Donghao Liu , Sihang Liu , Shujie Jiao , Xuan Fang , Dan Fang , Liancheng Zhao , Jinzhong Wang

Attributed to its excellent physicochemical properties, graphene (GR) has very active applications in the fields of catalysis, optoelectronic devices, and battery electrode materials. However, until now, regulating the type and density of carriers in GR is still crucial for its practical applications. Here, reduced graphene oxide (RGO)-Bi₂Te₃ heterojunctions doped with different contents were prepared by a simple one-step method. The Bi₂Te₃ materials containing different RGO were made into broadband (365–850 nm) photoelectrochemical-type detectors, and the effects of the doping amount of RGO on the optoelectronic behavior of the devices and the intrinsic operation mechanism of the devices were investigated in detail. The results show that the values of I_ph/I_dark, R_i, and D^∗ of Bi₂Te₃/RGO heterojunction devices obtained with 1 mg of RGO doping are 412, 6.072 mA/W, and 2.406 × 10¹⁰ Jones, respectively. It is anticipated that this work will provide a research basis for future quantitative tuning of the performance of micro-nano devices by GR.

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引用次数: 0

Construction of 3D aerogels consisting of cellulose and BNNSs bridged by AgNPs for enhancing thermal and tribological properties of polyurethane composites 用 AgNPs 桥接纤维素和 BNNSs 构建三维气凝胶，提高聚氨酯复合材料的热性能和摩擦学性能

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2024.02.004

Yu He , Yuanya Zhang , Yongjun Zhou , Junya Yuan , Xuehu Men

Waterborne polyurethane (WPU) is attracting widespread attention in the friction field, but pure WPU cannot meet the wear resistance requirements due to poor thermal and self-lubricating properties. Herein, a novel cellulose/BNNSs-AgNPs aerogel (CBAg) composed of zero-dimensional silver nanoparticles (AgNPs), one-dimensional cellulose and two-dimensional boron nitride nanosheets (BNNSs) was successfully fabricated. Specifically, AgNPs were loaded onto the surface of BNNSs, which could serve as bridges to connect adjacent BNNSs. Cellulose was used to construct a 3D skeleton structure for stabilizing better dispersion of inorganic fillers. Finally, the thermal and tribological properties of CBAg-WPU were improved compared to pure WPU, with a 69% increase in thermal conductivity and an 89% reduction in wear rate. This was attributed to the load-bearing capacity of cellulose and outstanding thermal and lubricant capability of BNNSs-AgNPs. In addition, BNNSs and AgNPs inside the aerogel were transferred to the sliding interface and participated in the formation of high-quality friction transfer film, further endowing CBAg-WPU composites prominent tribological performance. Therefore, the novel design of 3D hybrid aerogels provided a promising avenue to improve the tribological performance of WPU composites.

水性聚氨酯（WPU）在摩擦领域受到广泛关注，但由于热性能和自润滑性能较差，纯 WPU 无法满足耐磨性要求。本文成功制备了一种新型纤维素/BNNSs-AgNPs 气凝胶（CBAg），该气凝胶由零维银纳米粒子（AgNPs）、一维纤维素和二维氮化硼纳米片（BNNSs）组成。具体来说，AgNPs 被负载到 BNNSs 表面，可作为连接相邻 BNNSs 的桥梁。纤维素被用来构建三维骨架结构，以更好地稳定无机填料的分散。最后，与纯 WPU 相比，CBAg-WPU 的热性能和摩擦学性能得到了改善，热导率提高了 69%，磨损率降低了 89%。这归功于纤维素的承载能力和 BNNSs-AgNPs 出色的导热和润滑能力。此外，气凝胶中的 BNNSs 和 AgNPs 被转移到滑动界面，参与形成了高质量的摩擦传递膜，进一步赋予了 CBAg-WPU 复合材料突出的摩擦学性能。因此，三维混合气凝胶的新颖设计为改善WPU复合材料的摩擦学性能提供了一条很有前景的途径。

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引用次数: 0

Nanoarchitectonics of point-of-care diagnostics for sweat biomarkers analysis 用于汗液生物标记分析的床旁诊断纳米架构

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2024.01.010

Xuan Lin , Arya Vasanth , Aditya Ashok , Hoang-Phuong Phan , Kevin M. Koo , Mohammed A. Amin , Yusuf Valentino Kaneti , Carlos Salomon , Md Shahriar A. Hossain , Yusuke Yamauchi , Mostafa Kamal Masud

Sweat contains numerous vital biomarkers such as metabolites, electrolytes, proteins, nucleic acids and antigens that reflect hydration status, exhaustion, nutrition, and physiological changes. Conventional healthcare diagnosis relies on disease diagnostics in sophisticated centralized laboratories with invasive sample collection (e.g., chemical analyses, plasma separation via centrifugation, tissue biopsy, etc.). Cutting-edge point-of-care diagnostics for sweat biomarker analysis allow for non-invasive monitoring of physiologically related biomarkers in sweat and real-time health status tracking. Moreover, using advanced nanoarchitectures, including nanostructured platforms and nanoparticles, can enhance the specificity, sensitivity, wearability and widen the sensing modality of sweat biosensors. Herein, we comprehensively review the secretory mechanisms, clinical uses of sweat biomarkers, and the design, principle, and latest technologies of sweat biosensors. With an emphasis on cutting-edge technologies for sweat biomarker analysis, this review chronicles the issues associated with the current sweat biomarkers analysis of sweat biomarkers and provides insights into strategies for enhancing the translation of such biosensors into routine clinical practice.

汗液中含有大量重要的生物标记物，如代谢物、电解质、蛋白质、核酸和抗原，可反映水合状态、疲惫程度、营养状况和生理变化。传统的医疗诊断依赖于在精密的中央实验室进行疾病诊断，并采集侵入性样本（如化学分析、血浆分离离心、组织活检等）。用于汗液生物标志物分析的尖端床旁诊断技术可对汗液中与生理相关的生物标志物进行无创监测，并实时跟踪健康状况。此外，利用先进的纳米结构，包括纳米结构平台和纳米颗粒，可以提高汗液生物传感器的特异性、灵敏度、耐磨性并拓宽传感模式。在此，我们全面综述了汗液生物标记物的分泌机制、临床用途以及汗液生物传感器的设计、原理和最新技术。这篇综述以汗液生物标志物分析的前沿技术为重点，记录了当前汗液生物标志物分析中的相关问题，并对加强此类生物传感器转化为常规临床实践的策略提出了见解。

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引用次数: 0

Manipulating polarization attenuation in NbS2–NiS2 nanoflowers through homogeneous heterophase interface engineering toward microwave absorption with shifted frequency bands 通过同质异相界面工程操纵 NbS2-NiS2 纳米流中的偏振衰减，实现频带偏移的微波吸收

IF 9.9 2区材料科学 Q1 Engineering

Nano Materials Science

Pub Date : 2024-12-01 DOI: 10.1016/j.nanoms.2024.05.003

Yiru Fu , Yuping Wang , Junye Cheng , Yao Li , Jing Wang , Yongheng Jin , Deqing Zhang , Guangping Zheng , Maosheng Cao

Homogeneous heterogeneous (heterophase) interfaces regulated with low energy barriers have a fast response to applied electric fields and could provide a unique interfacial polarization, which facilitate the transport of electrons across the substrate. Such regulation on the interfaces is effective in modulating electromagnetic wave absorbing materials. Herein, we construct NbS₂–NiS₂ heterostructures with NiS₂ nanoparticles uniformly grown in NbS₂ hollow nanospheres, and such particular structure enhances the interfacial polarization. The strong electron transfer at the interface promotes electron transport throughout the material, which results in less scattering, promotes conduct ion loss and dielectric polarization relaxation, improves dielectric loss, and results in a good impedance matching of the material. Consequently, the absorbing band may be successful tuned. By regulating the amount of NiS₂, the heterogeneous interface is finely alternated so that the overall wave-absorbing performance is shifted to lower frequencies. With a NiS₂ content of 15 wt% and an absorber thickness of 1.84 mm, the minimum reflection loss at 14.56 GHz is −53.1 dB, and the effective absorption bandwidth is 5.04 GHz; more importantly, the minimum reflection loss in different bands is −20 dB, and the microwave energy absorption rate reaches 99% when the thickness is about 1.5–4.5 mm. This work demonstrates the construction of homogeneous heterostructures is effective in improving the electromagnetic absorption properties, providing guideline for the synthesis of highly efficient electromagnetic absorbing materials.

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引用次数: 0