Non-layer structured nanomaterials with single- or few-layer thickness have two-dimensional sheet-like structures and possess intriguing properties. Recent years have seen major advances in ...development of a host of non-layer structured ultrathin two-dimensional nanomaterials such as noble metals, metal oxides and metal chalcogenides. The wet-chemical synthesis has emerged as the most promising route towards high-yield and mass production of such nanomaterials. These nanomaterials are now finding increasing applications in a wide range of areas including catalysis, energy production and storage, sensor and nanotherapy, to name but a few.
Ultrathin two-dimensional (2D) nanosheets, such as graphene and MoS2, which are demonstrated to be fundamentally and technologically important in many applications, have emerged as a unique family of ...nanomaterials in chemistry and material science over the past decade. The single-crystalline nature and ultrathin thickness of these 2D nanosheets make them ideal templates for the epitaxial deposition of nanostructures, which offer many possibilities to engineer microsized 2D p–n hetero-junctions at atomic/nanometer scale. This Perspective aims to provide information on the epitaxial growth of hetero-nanostructures based on ultrathin 2D nanosheets. Various methods for the epitaxial growth of nanostructures based on ultrathin 2D nanosheets or in situ growth of lateral or vertical epitaxial 2D semiconductor hetero-nanostructures are introduced. The advantages of these 2D epitaxial hetero-nanostructures for some applications, such as electronics, optoelectronics, and electrocatalysis, are also presented. On the basis of the current status of 2D epitaxial hetero-nanostructures, the future prospects of this promising area are discussed.
As one member of the emerging class of ultrathin two‐dimensional (2D) transition‐metal dichalcogenide (TMD) nanomaterials, the ultra‐thin MoS2 nanosheet has attracted increasing research interest as ...a result of its unique structure and fascinating properties. Solution‐phase methods are promising for the scalable production, functionalization, hybridization of MoS2 nanosheets, thus enabling the widespread exploration of MoS2‐based nanomaterials for various promising applications. In this Review, an overview of the recent progress of solution‐processed MoS2 nanosheets is presented, with the emphasis on their synthetic strategies, functionalization, hybridization, properties, and applications. Finally, the challenges and opportunities in this research area will be proposed.
Sheets ahead: Solution‐based methods offer an effective route for the preparation of MoS2 nanosheets. With the an emphasis on applications, the synthetic strategies and methods for functionalization and hybridization are discussed.
Ultrathin two‐dimensional (2D) layered transition metal dichalcogenides (TMDs), such as MoS2, WS2, TiS2, TaS2, ReS2, MoSe2 and WSe2, have attracted considerable attention over the past six years ...owing to their unique properties and great potential in a wide range of applications. Aiming to achieve tunable properties and optimal application performances, great effort is devoted to the exploration of 2D multinary layered metal chalcogenide nanomaterials, which include ternary metal chalcogenides with well‐defined crystal structures, alloyed TMDs, heteroatom‐doped TMDs and 2D metal chalcogenide heteronanostructures. These novel 2D multinary layered metal chalcogenide nanomaterials exhibit some unique properties compared to 2D binary TMD counterparts, thus holding great promise in various potential applications including electronics/optoelectronics, catalysis, sensors, biomedicine, and energy storage and conversion with enhanced performances. This article focuses on the state‐of‐art progress on the preparation, characterization and applications of ultrathin 2D multinary layered metal chalcogenide nanomaterials.
The exploration of 2D multinary layered metal chalcogenide nanomaterials garners great efforts, aiming to achieve tunable properties and optimal application performances. State‐of‐the‐art progress on the preparation and characterization of ultrathin 2D multinary layered metal chalcogenide nanomaterials is reviewed, along with their potential application in electronics/optoelectronics, catalysis, sensors, biomedicine, and energy storage and conversion.
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.
Two‐dimensional (2D) nanomaterials, such as graphene and transition metal dichalcogenides (TMDs), receive a lot of attention due to their attractive properties and wide applications. Their performance can be further enhanced by the formation of hybrid structures with other functional materials. In this review, the latest studies in 2D nanomaterial‐based hybrid nanostructures are discussed, focusing on their preparation methods, properties, and applications.
Transition‐metal dichalcogenides (TMDs) have attracted considerable attention in recent years because of their unique properties and promising applications in electrochemical energy storage and ...conversion. However, the limited number of active sites as well as blocked ion and mass transport severely impair their electrochemical performance. The construction of three‐dimensional (3D) architectures from TMD nanomaterials has been proven to be an effective strategy to solve the aforementioned problems as a result of their large specific surface areas and short ion and mass transport distances. This Review summarizes the commonly used routes to build 3D TMD architectures and highlights their applications in electrochemical energy storage and conversion, including batteries, supercapacitors, and electrocatalytic hydrogen evolution. The challenges and outlook in this research area are also discussed.
Electrochemistry in 3D: Three‐dimensional transition‐metal dichalcogenide architectures have shown great promise for electrochemical energy storage and conversion. This Review summarizes the commonly used strategies for the construction of such architectures, as well as their application in rechargeable batteries, supercapacitors, and electrocatalytic hydrogen evolution.
The development of renewable energy storage and conversion devices is one of the most promising ways to address the current energy crisis, along with the global environmental concern. The exploration ...of suitable active materials is the key factor for the construction of highly efficient, highly stable, low‐cost and environmentally friendly energy storage and conversion devices. The ability to prepare two‐dimensional (2D) metal dichalcogenide (MDC) nanosheets and their functional composites in high yield and large scale via various solution‐based methods in recent years has inspired great research interests in their utilization for renewable energy storage and conversion applications. Here, we will summarize the recent advances of solution‐processed 2D MDCs and their hybrid nanomaterials for energy storage and conversion applications, including rechargeable batteries, supercapacitors, electrocatalytic hydrogen generation and solar cells. Moreover, based on the current progress, we will also give some personal insights on the existing challenges and future research directions in this promising field.
Two‐dimensional (2D) metal dichalcogenides (MDC) and their functional composites show great potential in a wide range of applications. Solution‐based methods can produce high‐yield 2D MDC‐based materials for energy storage/conversion applications. Recent advances regarding the energy storage/conversion applications of solution‐processed 2D MDC‐based materials, including rechargeable batteries, supercapacitors, electrocatalytic hydrogen generation, and solar cells, are summarized.
There is an emerging need for semiconductors that can be processed at near ambient temperature with high mobility and device performance. Although multiple n-type options have been identified, the ...development of their p-type counterparts remains limited. Here, we report the realization of tellurium thin films through thermal evaporation at cryogenic temperatures for fabrication of high-performance wafer-scale p-type field-effect transistors. We achieve an effective hole mobility of ~35 cm
V
s
, on/off current ratio of ~10
and subthreshold swing of 108 mV dec
on an 8-nm-thick film. High-performance tellurium p-type field-effect transistors are fabricated on a wide range of substrates including glass and plastic, further demonstrating the broad applicability of this material. Significantly, three-dimensional circuits are demonstrated by integrating multi-layered transistors on a single chip using sequential lithography, deposition and lift-off processes. Finally, various functional logic gates and circuits are demonstrated.
Graphene-Based Electrochemical Sensors Wu, Shixin; He, Qiyuan; Tan, Chaoliang ...
Small (Weinheim an der Bergstrasse, Germany),
April 22, 2013, Letnik:
9, Številka:
8
Journal Article
Recenzirano
Graphene, one kind of emerging carbon nanomaterial, has attracted increasing attention recently. Due to its fascinating physical and electrochemical properties, graphene as a promising electrode ...material has been widely used in electrochemical sensing applications. In this review, different approaches for the fabrication of graphene and the preparation of graphene‐modified electrodes for electrochemical sensors are introduced. Moreover, recent research results on different graphene‐based materials as an electrochemical platform for the detection of various biomolecules and chemicals are reviewed and compared. More electrochemical studies on this novel material should show up in the near future.
Recently, different graphene‐based materials, prepared by chemical reduction of graphene oxide (GO), solvothermal reduction of GO, electrochemical reduction of GO, etc., have been widely used for electrochemical sensing applications. In this review, the sensing performances of different graphene‐based materials for detection of various biomolecules and chemicals have been summarized and compared.
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