二维纳米材料的改性及其环境污染物治理方面的应用

二维纳米材料是一类具有类似二维平面形态,且厚度在纳米级甚至数个原子层的材料,其种类繁多并且具有很多与体相材料不同的物化性质,在众多领域受到了广泛关注。二维纳米材料在催化降解、吸脱附、过滤、传感检测等领域具有可观的应用潜力,还可用于环境污染的防治。通过形貌、元素、基团、缺陷的修饰、改性和材料合成等策略可以调控二维纳米材料的性质,从而研发新的材料体系或者改善二维纳米材料的性能。本文首先归纳了二维纳米材料的种类,并重点阐述了各种改性策略的作用及研究现状,以及改性的二维纳米材料在治理水体污染、大气污染和污染物检测等方面的应用,为二维纳米材料在环境治理领域的发展现状作了系统介绍和展望。     

二硫化钨纳米材料的应用研究现状

近年来,二硫化钨作为具有类石墨烯结构的二维材料,由于具有优异的电学、光学和催化性能得到了广泛研究.本文介绍了二硫化钨纳米材料的结构性质,并综述了二硫化钨纳米材料在润滑材料、催化领域、能量储存、光电器件和微波吸收领域的应用研究现状,最后总结了二硫化钨纳米材料研究中存在的问题,并展望了其发展前景.     

二维纳米材料热传导行为及其界面调控※

二维纳米材料具有独特的二维无限拓展超薄结构, 其声子输运受到维度限制, 从而赋予了二维纳米材料新奇的热传导性质, 是研究微纳尺度热传导的理想材料平台. 界面工程可以引发二维纳米材料中声子振动模式的改变和声子振动的耦合, 导致材料的热传导行为改变, 为实际应用中微纳器件的散热、极端环境的热防护等提供了可能的解决方案. 详细介绍了在经典二维纳米材料中热传导的不同机制及新奇特性, 阐述了界面工程对二维纳米材料热传导的影响, 并进一步展望了原子分子级别界面调控在二维材料热传导领域的研究前景.     

碳纳米材料及其在多相催化中的应用

碳纳米材料（包括零维、一维、二维碳纳米材料以及碳纳米孔材料）是一类新型的催化剂或催化剂载体材料,在氧化脱氢、选择加氢、合成氨、氨分解制氢以及燃料电池等多相催化领域具有广阔的应用前景。本文综述了近年来新型碳纳米材料在多相催化领域中的应用研究进展,介绍了这类催化材料的制备方法,重点阐述了碳载体的微/介观结构、掺杂、电子性质、表面性质、限域效应等对所担载的催化活性组分的分散,对反应物的扩散以及对催化反应的活性和选择性等方面的影响。     

再谈磷的同素异形体*——磷纳米材料和磷烯

依据磷化学的研究进展全面考察了磷的另一类同素异形体,包括磷纳米材料类和磷烯,它们都是结构特殊的先进材料。详细介绍了它们的制备、组成、结构、性质及其重要应用。     

超薄二维MOF纳米材料的制备和应用

超薄二维金属有机框架材料(MOF)纳米材料是MOF材料中的一类,不同于传统体相MOF材料,超薄片状结构赋予了它高比表面积、丰富的配位不饱和的金属位点等独特性质,能够有效改善MOF在催化、分离和传感等领域中的性能。本文综述了近年来国内外在超薄二维MOF纳米材料的构建及制备方法的研究进展,其中包括自上而下法、自下而上法以及独立于二者的二维氧化物模板牺牲法等。同时,本文详细讨论了超薄二维MOF纳米材料在气体吸附与气体分离、催化、能量储存和传感平台等领域的应用前景,并对未来超薄二维MOF纳米材料的研究面临的挑战和机遇做了进一步的分析。     

低对称性二维ReS2及其异质结的化学气相沉积法制备及性质

二维硫化铼(ReS₂)是一种晶格对称元素少,纵向仅有原子级厚度的层状结构功能纳米材料。其晶体结构的低对称性使二维ReS₂具有丰富的各向异性理化性质,在微纳光子学、触觉传感器和各向异性电子器件等领域前景广阔。该类材料的应用开发依赖于高质量的合成和对其性质的深刻理解。本文首先从金属含铼前驱体、非金属含硫前驱体以及基底工程三个方面归纳了化学气相沉积法可控制备二维ReS₂的各种手段和生长机制。随后,按照合成步骤分“一步法”和“两步法”介绍了ReS₂水平和纵向异质结的制备最新进展。最后,综述了ReS₂在各向异性光学和电学方面的性质。本文还对二维ReS₂合成和性质研究的挑战和机遇提出了展望。     

二维光催化材料

正二维纳米材料是一类性能独特且有良好前景的光催化材料。二维材料表面原子排列通常与块体材料不同,对表面性质和界面电荷转移有显著影响,展现出独特的表/界面特性。近年来,各类二维纳米材料合成方法和表面改性策略的快速发展,在光催化性能提升和能源环境领域应用等方面发挥了重要作用。本专刊邀请了从事光催化研究的学者,分享了他们在二维光催化材料方面的最新研究成果。     

二维金属纳米材料的合成及电催化应用的研究进展

基于各种电化学过程的能源转化技术是未来可持续能源利用和发展的关键, 而催化剂在其中扮演着非常重要的角色. 二维金属纳米材料因其独特的物理化学性质在许多电催化反应中都展现出巨大的应用潜力, 也因此受到了广泛关注. 本文介绍了二维金属纳米材料的常见合成方法与策略, 并综合评述了近年来该类材料在电催化应用领域中的研究进展, 重点探讨了材料的组分和微观结构等因素对其性能的影响机理, 最后对二维金属纳米材料目前所面临的挑战以及未来的研究方向进行了总结与展望.     

有机或金属-有机二维纳米材料的制备与应用

对石墨烯等二维材料的研究进一步引发了人们对相似结构的其他有机、金属-有机二维层状纳米材料的浓厚兴趣. 这些二维材料由于其优异的化学可剪裁性而受到关注, 预期未来在电子器件、催化和小分子分离等方面具有广泛的用途. 这篇综述系统地介绍了目前制备有机基二维材料的自上而下和自下而上的两大类方法, 总结了有机基二维材料在生物识别、小分子分离和纯化以及电学方面的应用, 最后讨论了有机基二维材料目前在制备和性质改进方面面临的问题和未来可能发展的研究方向.     

Recent Progress on Two-dimensional Electrocatalysis

Due to their unique electronic and structural properties triggered by high atomic utilization and easy surface modification, two-dimensional(2D) materials have prodigious potential in electrocatalysis for energy conversion technology in recent years. In this review, we discuss the recent progress on two-dimensional nanomaterials for electrocatalysis. Five categories including metals, transition metal compounds, non-metal, metal-organic framework and other emerging 2D nanomaterials are successively introduced. Finally, the challenges and future development directions of 2D materials for electrocatalysis are also prospected. We hope this review may be helpful for guiding the design and application of 2D nanomaterials in energy conversion technologies.     

A review on two-dimensional (2D) and 2D-3D multidimensional perovskite solar cells: Perovskites structures,stability, and photovoltaic performances

Perovskite solar cells (PSCs) fabricated with two-dimensional (2D) halide and 2D-3D mixed-halide materials are remarkable for their optoelectronic properties. The 2D perovskite structures are extremely stable but show limited charge transport and large bandgap for solar cell applications. To overcome these challenges, multidimensional 2D-3D perovskite materials are used to maintain simultaneously, a long-term stability, and high performance. In this review, we discuss the recent progress and the advantages of 2D and 2D-3D perovskite materials as absorber for solar cell applications. First, we discuss the structure and the unique properties of 2D and multidimensional 2D-3D perovskites materials. Second, the stability of 2D and 2D-3D mixed perovskites and the perspects of PSCs are hashed out.     

Intercalation of Two-dimensional Layered Materials

Two-dimensional(2D) layered materials have attracted great attention due to their unique electrical, optical, thermal and mechanical properties. 2D layered materials have unique van der Waals gaps, thus the foreign substance, such as atoms, molecules and ions, can be inserted into the gaps to change the physical and chemical properties of 2D layered materials, which is conducive to realize their multi-functional application. Herein, we present a critical review of recent research progress of 2D intercalated materials, including the synthesizing methods, theoretical calculation, characterization and multifunctional application. Finally, we will summarize the current challenges and future opportunities in the development of 2D intercalated materials.     

Dependence of the Properties of 2D Nanocomposites Generated by Covalent Crosslinking of Nanosheets on the Interlayer Separation: A Combined Experimental and Theoretical Study

Covalently cross-linked heterostructures of 2D materials are a new class of materials which possess electrochemical and photochemical hydrogen evolution properties. It was of considerable interest to investigate the role of interlayer spacing in the nanocomposites involving MoS₂ and graphene sheets and its control over electronic structures and catalytic properties. We have investigated this problem with emphasis on the hydrogen evolution properties of these structures by a combined experimental and theoretical study. We have linked MoS₂ based nanocomposites with other 2D materials with varying interlayer spacing by changing the linker and studied their hydrogen evolution properties. The hydrogen evolution activity for these composites decreases with increasing linker length, which we can link to a decrease in magnitude of charge transfer across the layers with increasing interlayer spacing. Factors such as the nature of the sheets, interlayer distance as well as the nature of the linker provide pathways to tune the properties of covalently cross-linked 2D material rendering this new class of materials highly interesting.     

Infrared Polaritonic Biosensors Based on Two-Dimensional Materials

In recent years, polaritons in two-dimensional (2D) materials have gained intensive research interests and significant progress due to their extraordinary properties of light-confinement, tunable carrier concentrations by gating and low loss absorption that leads to long polariton lifetimes. With additional advantages of biocompatibility, label-free, chemical identification of biomolecules through their vibrational fingerprints, graphene and related 2D materials can be adapted as excellent platforms for future polaritonic biosensor applications. Extreme spatial light confinement in 2D materials based polaritons supports atto-molar concentration or single molecule detection. In this article, we will review the state-of-the-art infrared polaritonic-based biosensors. We first discuss the concept of polaritons, then the biosensing properties of polaritons on various 2D materials, then lastly the impending applications and future opportunities of infrared polaritonic biosensors for medical and healthcare applications.     

Synthetic Two-dimensional Organic Structures

Synthetic two-dimensional(2 D) polymers have totally different topology structures compared with traditional linear or branched polymers. The peculiar 2 D structures bring superior properties. Although, from linear to 2 D polymers, the study of these new materials is still in its infancy, they already show potential applications especially in optoelectronics, membranes, energy storage and catalysis, etc. In this review, we summarize the recent progress of the 2 D materials from three respects:(1) Chemistry—different types of polymerization reactions or supramolecular assembly to construct the 2 D networks were described;(2) Preparation methods—surface science, crystal engineering approaches and solution synthesis were introduced;(3) Functionalization and some early applications.     

Progress and Prospects on the Fabrication of Graphene-Based Nanostructures for Energy Storage,Energy Conversion and Biomedical Applications

Graphene, a two-dimensional (2D) layered material has attracted much attention from the scientific community due to its exceptional electrical, thermal, mechanical, biological and optical properties. Hence, numerous applications utilizing graphene-based materials could be conceived in next-generation electronics, chemical and biological sensing, energy conversion and storage, and beyond. The interaction between graphene surfaces with other materials plays a vital role in influencing its properties than other bulk materials. In this review, we outline the recent progress in the production of graphene and related 2D materials, and their uses in energy conversion (solar cells, fuel cells), energy storage (batteries, supercapacitors) and biomedical applications.     

Oxidations of two-dimensional semiconductors: Fundamentals and applications

Since the discovery of graphene, two-dimensional(2D) semiconductors have been attracted intensive interest due to their unique properties. They have exhibited potential applications in next generation electronic and optoelectronic devices. However, most of the 2D semiconductor are known to suffer from the ambient oxidation which degrade the materials and therefore hinder us from the intrinsic materials’ properties and the optimized performance of devices. In this review, we summarize the recent ...     

Two-dimensional transition metal chalcogenide nanomaterials for cancer diagnosis and treatment

For more than a decade, the exfoliation of graphene and other layered materials has led to a tremendous amount of research in two-dimensional (2D) materials, among which 2D transition metal chalcogenides (TMCs) nanomaterials have attracted much attention in a wide range of applications including photoelectric devices, lithium-ion batteries, catalysis, and energy conversion and storage owing to their unique photoelectric physical properties. With such large specific surface area, strong near-infrared (NIR) absorption and abundant chemical element composition, 2D TMCs nanomaterials have become good candidates in biomedical imaging and cancer treatment. This review systematically summarizes recent progress on 2D TMCs nanomaterials, which includes their synthesis methods and applications in cancer treatment. At the end of this review, we also highlight the future prospects and challenges of 2D TMCs nanomaterials. It is expected that this work can provide the readers with a detailed overview of the synthesis of 2D TMCs and inspire more novel functional biomaterials based on 2D TMCs for cancer treatment in the future.     

Water Adsorption and Transport on Oxidized Two-Dimensional Carbon Materials

Studies on the adsorption and transport of water molecules with oxidized two-dimensional (2 D) carbon materials have attracted increasing interest owing to their wide range of applications, such as sensing, energy conversion, and membrane separation. In this contribution, the interaction between water molecules and oxidized 2 D carbon materials (i.e., graphene oxide and graphdiyne oxide) is discussed, the influence of water adsorption and transport on the physicochemical properties of 2 D carbon materials is presented, and the recent progress on oxidized 2 D carbon material-based proton conduction, electricity generation, water transport, and humidity sensing is highlighted. The opportunities and challenges in these research fields are discussed, especially the structural stability and chemical modification of 2 D carbon materials.