六方氮化硼的剥离及其在导热复合材料中的应用

六方氮化硼(h-BN)是一种石墨烯类二维材料,具有很高的导热性。当将其剥离成二维氮化硼纳米片(BNNSs)时,因其层状材料特殊的电子性能和高比表面积,使其制备技术受到很多研究人员的关注,其剥离方法以机械球磨和液相超声为主。综述了氮化硼二维纳米材料的几种剥离方法、原理及其优缺点,将在塑料导热材料中呈现较好的应用前景。     

用于锂离子电池的石墨烯材料——储能特性及前景展望

石墨烯具有独特的二维结构、优异的性能和各种潜在的应用价值,是当前材料科学领域研究的热点.通过简要评述石墨烯作为锂离子电池负极材料的结构与性能的关系,讨论了作为电极材料的石墨烯结构与功能调控的重要性,指出石墨烯基纳米材料是一种很有吸引力的锂离子电池电极材料,尤其针对高能量密度与高功率密度电池.     

石墨烯纳米复合材料的制备及其应用研究进展

石墨烯是近年被发现和合成的一种新型二维碳质纳米材料。由于其独特的结构和新奇的物化性能,在改善复合材料的热性能、力学性能和电性能等方面具有很大的潜力,已成为纳米复合材料研究的热点。本文综述了纳米石墨烯/聚合物复合材料以及纳米石墨烯/无机物复合材料的制备及应用,并对石墨烯纳米复合材料的发展前景进行了展望。     

聚焦石墨烯宏观体的制备技术和应用前景:一维、二维、三维组装结构

独特的二维结构和优异的理化性能使得石墨烯迅速成为物理、化学以及材料等领域的研究热点。近年来,由二维结构的石墨烯组装形成的石墨烯宏观体材料,因具有本征石墨烯固有的理化性能又具有较大实际比表面积、连通的纳米通道以及良好的力学性能,使其在光学器件、电子器件以及环境治理等领域备受关注。结合当前研究热点,主要概述了石墨烯宏观体的制备及其在超级电容器、光电器件以及环境修复与治理等领域中的应用,简要地评述了石墨烯宏观体材料在制备及应用中面临的挑战,初步指出了未来石墨烯宏观体的发展趋势。     

卟啉衍生物功能化石墨烯材料的光电性能新进展

石墨烯是一种新型二维近似平面结构的碳纳米材料,具有非常卓越的光电性能,为更好地发挥其优异性能,对其表面功能化改性颇受人们关注。重点阐述了卟啉类衍生物对石墨烯的共价和非共价功能化修饰及通过共价和非共价方式构筑其纳米复合材料和此纳米材料在非线性光学和电化学传感器制备等应用中的最新研究进展,并展望了石墨烯卟啉杂化材料在相关领域里的应用。     

石墨烯基复合润滑材料的研究进展

本文简单介绍了石墨烯的各种纳米摩擦机理,另外详细介绍了二维碳纳米材料-石墨烯作为纳米润滑薄膜、润滑添加剂和润滑填料减磨抗磨性能的研究进展,并对石墨烯用于润滑材料的潜力及未来的研究方向做了阐述,研究结果有利于进一步理解石墨烯的摩擦学性能及润滑机理。     

石墨烯：化学与结构功能化

石墨烯是由单原子层二维单晶结构构成的一种新型纳米材料,具备光学、力学等优异性能,但其疏水性和生物不相容性限制了其在诸多领域的应用。为解决这一问题,石墨烯功能化成为近年来的研究热点。功能化石墨烯包括石墨烯的衍生物氧化石墨烯、石墨烯聚合物复合材料、转角石墨烯、石墨烯气凝胶、超韧性石墨烯等,主要是在石墨烯材料基础上,通过物理化学处理、结构改进对材料本身进行改性,使其功能化。功能化石墨烯具有优良的光电性能,包括高灵敏度、高响应度、高探测度等,可用于工业检测和监控、三维形貌测量、生物医学等邻域。重点讨论了功能化石墨烯的性质、制备方法,介绍了石墨烯功能化的最新进展。同时,对目前功能化石墨烯所面临的挑战和机遇做了展望。     

基于纳米材料的气凝胶制备及应用

气凝胶是一种三维多孔材料,具有孔隙率高、比表面积大、密度低等特性。以纳米材料构筑气凝胶可进一步调控孔隙结构、改善机械强度,同时还能赋予气凝胶高导电性、低热导率、高吸附性和隔音吸声等特性,在储能、保温隔热、吸附材料等领域有重要的应用。重点对近年以纳米颗粒、纳米纤维素、碳纳米纤维、碳纳米管、石墨烯等不同形态纳米材料构筑的气凝胶的制备、结构、性能和应用进行了综述,同时展望了气凝胶的发展前景与方向。     

零维、一维、二维无机纳米材料催化还原CO_2研究进展

CO_2是温室气体的主要成分,但也是可被利用的潜在碳能源。主要介绍了近年来丰富的纳米材料包含零维、一维、二维无机纳米材料催化还原CO_2的研究现状。综述了不同课题组采用零维、一维、二维纳米结构进行催化还原CO_2,从材料结构、催化性能以及基本反应机理等方面进行分析和评述,分析总结不同维度的纳米材料各自的优势。最后对CO_2催化还原研究的发展方向和应用前景进行了展望。     

科学家研制新型二维材料拓展“纳米”应用范围

<正>据国外媒体报道,澳大利亚联邦科工组织(CSIRO)和墨尔本皇家理工大学(RMIT University)的科学家们已经研制出二维纳米材料,有望使"纳米"得到广泛应用。二维纳米材料由数层的氧化钼晶体组成,有着独特性能,能够支持自由电子超高速流动。有关该材料的文章已经发表在1月期的材料科学期刊《先进材料》(Advanced Materials)上。在文章中,研究人员讲述了他们如何利用石墨烯这种材料研制出新型可传导的二维纳米材料。2004年,英国科学家发明了石墨烯。尽管石墨烯支持高速     

Recent Progress on Fabrications and Applications of Boron Nitride Nanomaterials:A Review

Boron nitride(BN) nanostructures with complementary functions to their carbon counterparts are one of the most intriguing nanomaterials.Here we devote a compact review on the syntheses of BN nanomaterials:typical zero-dimensional(OD) fullerenes and nanoparticles,one-dimensional(1D) nanotubes and nanoribbons,two-dimensional(2D) nanosheets as well as three-dimensional(3D) nanoporous BN.Combining low-dimensional quantum confinement and surface effects with unique physical and chemical properties of BN,e.g.excellent electric insulation,wide band gap,and high chemical and thermal stability,BN nanomaterials have drawn particular attention in a variety of potential applications,e.g.luminescence,functional composites,hydrogen accumulators,and advanced insulators,which are also reviewed.     

25th Anniversary Article: Hybrid Nanostructures Based on Two‐Dimensional Nanomaterials

Two‐dimensional (2D) nanomaterials, such as graphene and transition metal dichalcogenides (TMDs), receive a lot of attention, because of their intriguing properties and wide applications in catalysis, energy‐storage devices, electronics, optoelectronics, and so on. To further enhance the performance of their application, these 2D nanomaterials are hybridized with other functional nanostructures. In this review, the latest studies of 2D nanomaterial‐based hybrid nanostructures are discussed, focusing on their preparation methods, properties, and applications.     

2D Nanomaterials for Cancer Theranostic Applications

2D nanomaterials with unique nanosheet structures, large surface areas, and extraordinary physicochemical properties have attracted tremendous interest. In the area of nanomedicine, research on graphene and its derivatives for diverse biomedical applications began as early as 2008. Since then, many other types of 2D nanomaterials, including transition metal dichalcogenides, transition metal carbides, nitrides and carbonitrides, black phosphorus nanosheets, layered double hydroxides, and metal–organic framework nanosheets, have been explored in the area of nanomedicine over the past decade. In particular, a large surface area makes 2D nanomaterials highly efficient drug delivery nanoplatforms. The unique optical and/or X-ray attenuation properties of 2D nanomaterials can be harnessed for phototherapy or radiotherapy of cancer. Furthermore, by integrating 2D nanomaterials with other functional nanoparticles or utilizing their inherent physical properties, 2D nanomaterials may also be engineered as nanoprobes for multimodal imaging of tumors. 2D nanomaterials have shown substantial potential for cancer theranostics. Herein, the latest progress in the development of 2D nanomaterials for cancer theranostic applications is summarized. Current challenges and future perspectives of 2D nanomaterials applied in nanomedicine are also discussed.     

One-Dimensional （1D） ZnS Nanomaterials and Nanostructures

One-dimensional （1D） nanomaterials and nanostructures have received much attention due to their potential interest for understanding fundamental physical concepts and for applications in constructing nanoscale electric and optoelectronic devices. Zinc sulfide （ZnS） is an important semiconductor compound of Ⅱ-Ⅵ group, and the synthesis of 1D ZnS nanomaterials and nanostructures has been of growing interest owing to their promising application in nanoscale optoelectronic devices. This paper reviews the recent progress on 1D ZnS nanomaterials and nanostructures, including nanowires, nanowire arrays, nanorods, nanobelts or nanoribbons, nanocables, and hierarchical nanostructures etc. This article begins with a survey of various methods that have been developed for generating 1D nanomaterials and nanostructures, and then mainly focuses on structures, synthesis, characterization, formation mechanisms and optical property tuning, and luminescence mechanisms of 1D ZnS nanomaterials and nanostructures. Finally, this review concludes with personal views towards future research on 1D ZnS nanomaterials and nanostructures.     

Recent Progress in Emerging Novel MXenes Based Materials and their Fascinating Sensing Applications

Early transition metals based 2D carbides, nitrides and carbonitrides nanomaterials are known as MXenes, a novel and extensive new class of 2D materials family. Since the first accidently synthesis based discovery of Ti₃C₂ in 2011, more than 50 additional compositions have been experimentally reported, including at least eight distinct synthesis methods and also more than 100 stoichiometries are theoretically studied. Due to its distinctive surface chemistry, graphene like shape, metallic conductivity, high hydrophilicity, outstanding mechanical and thermal properties, redox capacity and affordable with mass-produced nature, this diverse MXenes are of tremendous scientific and technological significance. In this review, first we'll come across the MXene based nanomaterials possible synthesis methods, their advantages, limitations and future suggestions, new chemistry related to their selected properties and potential sensing applications, which will help us to explain why this family is growing very fast as compared to other 2D families. Secondly, problems that help to further improve commercialization of the MXene nanomaterials based sensors are examined, and many advances in the commercializing of the MXene nanomaterials based sensors are proposed. At the end, we'll go through the current challenges, limitations and future suggestions.     

VA族单元素二维纳米材料在生物医用领域的研究进展

纳米材料在不同技术领域均有广泛应用, 且在解决基础科学新发现上拥有巨大潜力。其中单元素构成的纳米材料因合成容易、制备简单而倍受关注, 尤其VA族二维单元素纳米材料(包括黑磷、砷烯等)的物理、化学、电子和光学特性优异, 在生物成像、药物递送和诊断治疗等生物医学领域应用前景广阔。本文总结了VA族二维单元素纳米材料的一般特性、合成和修饰方法, 重点介绍了其面向各种生物医学应用的纳米平台的研究进展, 最后, 讨论了其在生物医学领域所面临的挑战并展望了未来的发展方向。     

Mesoporous Nanoarchitectures for Electrochemical Energy Conversion and Storage

Mesoporous materials have attracted considerable attention because of their distinctive properties, including high surface areas, large pore sizes, tunable pore structures, controllable chemical compositions, and abundant forms of composite materials. During the last decade, there has been increasing research interest in constructing advanced mesoporous nanomaterials possessing short and open channels with efficient mass diffusion capability and rich accessible active sites for electrochemical energy conversion and storage. Here, the synthesis, structures, and energy-related applications of mesoporous nanomaterials are the main focus. After a brief summary of synthetic methods of mesoporous nanostructures, the delicate design and construction of mesoporous nanomaterials are described in detail through precise tailoring of the particle sizes, pore sizes, and nanostructures. Afterward, their applications as electrode materials for lithium-ion batteries, supercapacitors, water-splitting electrolyzers, and fuel cells are discussed. Finally, the possible development directions and challenges of mesoporous nanomaterials for electrochemical energy conversion and storage are proposed.     

Chemical Preparation of Graphene‐Based Nanomaterials and Their Applications in Chemical and Biological Sensors

Graphene is a flat monolayer of carbon atoms packed tightly into a 2D honeycomb lattice that shows many intriguing properties meeting the key requirements for the implementation of highly excellent sensors, and all kinds of proof‐of‐concept sensors have been devised. To realize the potential sensor applications, the key is to synthesize graphene in a controlled way to achieve enhanced solution‐processing capabilities, and at the same time to maintain or even improve the intrinsic properties of graphene. Several production techniques for graphene‐based nanomaterials have been developed, ranging from the mechanical cleavage and chemical exfoliation of high‐quality graphene to direct growth onto different substrates and the chemical routes using graphite oxide as a precusor to the newly developed bottom‐up approach at the molecular level. The current review critically explores the recent progress on the chemical preparation of graphene‐based nanomaterials and their applications in sensors.     

Multivalent Interactions between 2D Nanomaterials and Biointerfaces

2D nanomaterials, particularly graphene, offer many fascinating physicochemical properties that have generated exciting visions of future biological applications. In order to capitalize on the potential of 2D nanomaterials in this field, a full understanding of their interactions with biointerfaces is crucial. The uptake pathways, toxicity, long‐term fate of 2D nanomaterials in biological systems, and their interactions with the living systems are fundamental questions that must be understood. Here, the latest progress is summarized, with a focus on pathogen, mammalian cell, and tissue interactions. The cellular uptake pathways of graphene derivatives will be discussed, along with health risks, and interactions with membranes—including bacteria and viruses—and the role of chemical structure and modifications. Other novel 2D nanomaterials with potential biomedical applications, such as transition‐metal dichalcogenides, transition‐metal oxide, and black phosphorus will be discussed at the end of this review.     

Morphology Tunable Hybrid Carbon Nanosheets with Solvatochromism

The tunable photoluminescence of carbon‐based nanomaterials has received much attention for a wide range of applications. Herein, a unique, broad‐solvatochromic hybrid carbon nanosheet (CNS) synthesized through the hydrothermal carbonization of molecular precursors exploiting graphene oxide as a template is reported, resulting in the formation of clusters of carbon nanorings on the surface of graphene‐oxide nanosheets. Under UV and visible‐light excitation, the hybrid CNS exhibits tunable emission spanning the wide range of colors in a series of solvents with different polarities. This interesting spectroscopic behavior is found to originate from hydrogen‐bonding interactions between CNS and solvents, which eventually induce the morphological transition of CNS from 2D sheets to 3D crumpled morphologies, affecting the lifetimes of emissive states. This novel soft carbon nanostructure may open up a new possibility in tailoring the photophysical properties of carbon nanomaterials.