From two-dimensional materials to their heterostructures: An electrochemist's perspective

Velický, Matěj; Tóth, Péter S.

doi:10.1016/j.apmt.2017.05.003

Cited by 251 publications

(176 citation statements)

References 365 publications

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“…[18,19] With ad irectb and gap of 1.8 eV is as emiconductor potentially useful in several electronic applications and also solar power conversion. [20,21] In addition, it demonstrated excellent catalytic properties for the electrogeneration of hydrogen due to the bindinge nthalpy with H close to zero, similar to Pt. [22] Methods for the fabrication of single or few layer MoS 2 sheets are availablea nd similarly to graphene, can be categorized into two main approaches:t opdown and bottom-up.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Exfoliation of MoS₂ Crystal for Hydrogen Electrogeneration

Ambrosi

Pumera

2018

Chemistry A European J

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Transition metal dichalcogenides (TMDs) have recently emerged within the group of 2D materials due to their electrical, catalytic and optical properties significantly enhanced and useful when down-sized to single layer.I n particular,MoS 2 has attracted much attention due to its semiconducting nature with au seful band gap when presenta s single layer,t he enhanced photoluminescence, but also importantly the excellent catalytic properties towards the electrochemical hydrogen evolution. We present heret he preparation of thin layers MoS 2 nanosheetsw ith enhanced catalytic properties towards the hydrogen evolution reaction by meanso fa ne asy and fast electrochemical top-down exfoliation procedurei na queous solution from an aturally occurring MoS 2 crystal. After structurala nd chemical characterization with STEM, AFM, XPS and Raman spectroscopy electrochemicali nvestigationsw ere performed to test catalytic properties in acidic solution for the electrogeneration of hydrogen and compare it to MoS 2 nanosheets obtained through the widelye mployed chemical Li intercalation/exfoliation. Electrochemically exfoliated MoS 2 shows lower Ta fel slope than its counterparto btainedw ithc hemical exfoliation.[a] Dr.A .Ambrosi, Prof. Dr.M .P umera DivisionofChemistry &B iological Chemistry SchoolofP hysical and Mathematical SciencesSupporting information containing STEM images of chemically exfoliated MoS 2 and XPS survey spectra of chemically and electrochemically exfoliated MoS 2 ,and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Exfoliation of MoS₂ Crystal for Hydrogen Electrogeneration

Ambrosi

Pumera

2018

Chemistry A European J

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“…[ [1][2][3] Transition-metal dichalcogenides (TMDs) is another class of layered materials that has found catalytic applications. [8,9] More recently,a nother elemental layered material reemerged. [6,7] Another reason for the interest in these 2D layered materials,i st hat their electrochemical performance allows for the evaluation of the catalytic activity looking for future applications in energy alternatives,a dvanced electronic devices,a nd (bio)sensing systems.…”

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confidence: 99%

“…[6,7] Another reason for the interest in these 2D layered materials,i st hat their electrochemical performance allows for the evaluation of the catalytic activity looking for future applications in energy alternatives,a dvanced electronic devices,a nd (bio)sensing systems. [8,9] More recently,a nother elemental layered material reemerged. Black phosphorus (BP) [10] has al ayered structure that consists of asingle element and can be easily exfoliated to single/few-layer structures.…”

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confidence: 99%

Pnictogen (As, Sb, Bi) Nanosheets for Electrochemical Applications Are Produced by Shear Exfoliation Using Kitchen Blenders

Pumera

2017

Angewandte Chemie

100

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Layered materials are of high importance because of their anisotropyand as asource of 2D materials.Whilst there is aplethora of multi-elemental 2D materials,the number monoelemental 2D materials is rather limited. Herein, we demonstrate that aqueous shear exfoliation can be used to obtain As, Sb,and Bi exfoliated nanosheets.Morphological and chemical characterization of the exfoliated materials shows adecrease in thickness,sheet-to-nanosheet scale,and partial oxidation owing to ah igher surface area. The electrochemical performance is tested in terms of inherent electrochemistry,e lectron transfer, and sensing applications as demonstrated with ascorbic acid. Potential energy-related applications are evaluated in the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR), with shearexfoliated Sb having the best electrochemical performance overall. These findings will have ap rofound impact on the preparation and application of 2D mono-elemental materials.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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“…Modern developments in particle science and technology are characterized by an increasing complexity with respect to size, shape, surface, internal structure, composition, and the related functional properties. Novel materials such as graphene, boron nitride, or MoS 2 intrinsically require a multidimensional description of properties in dependence of thickness or number of layers and their lateral dimensions . Carbon nanotubes exhibit metallic or semiconducting behavior along the tube axis.…”

Section: Introductionmentioning

confidence: 99%

“…DOI: 10.1002/ppsc.201800554 of layers and their lateral dimensions. [1][2][3][4] Carbon nanotubes exhibit metallic or semi conducting behavior along the tube axis. The corresponding properties result from the molecular structure of the tube, which depends on armchair or zigzag termina tions of the underlying graphene struc ture.…”

mentioning

confidence: 99%

Multidimensional Particle Size Distributions and Their Application to Nonspherical Particle Systems in Two Dimensions

Frank

Wawra

Pflug

et al. 2019

Part & Part Syst Charact

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Particle science and technology evolve toward ever increasing complexity with respect to the multidimensional particle properties of size, shape, surface, internal structure, and composition. In this study, the theoretical background is elaborated for multidimensional particle size distributions (PSDs) by transferring the concepts known from 1D size distributions to anisotropic particles comprising at least two different length dimensions, e.g., nanorods and platelets. After introducing 2D PSDs, the calculation of differently weighted probability density functions including their interconversion is presented. This is necessary in order to compare data resulting from different measurement techniques which probe different physical properties and thus provide differently weighted PSDs. In addition, it is shown how 1D distributions with reduced content of information can be deduced from 2D PSDs. As a proof‐of‐concept and for illustration purposes, this approach is applied to a 2D Gaussian size distribution. Furthermore, a generalized scheme is suggested which outlines the conversion of number, surface, and volume weighted densities within the 2D space. The application of these methods to the more general n‐dimensional case is straightforward.

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From two-dimensional materials to their heterostructures: An electrochemist's perspective

Cited by 251 publications

References 365 publications

Electrochemical Exfoliation of MoS₂ Crystal for Hydrogen Electrogeneration

Electrochemical Exfoliation of MoS₂ Crystal for Hydrogen Electrogeneration

Pnictogen (As, Sb, Bi) Nanosheets for Electrochemical Applications Are Produced by Shear Exfoliation Using Kitchen Blenders

Multidimensional Particle Size Distributions and Their Application to Nonspherical Particle Systems in Two Dimensions

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From two-dimensional materials to their heterostructures: An electrochemist's perspective

Cited by 251 publications

References 365 publications

Electrochemical Exfoliation of MoS2 Crystal for Hydrogen Electrogeneration

Electrochemical Exfoliation of MoS2 Crystal for Hydrogen Electrogeneration

Pnictogen (As, Sb, Bi) Nanosheets for Electrochemical Applications Are Produced by Shear Exfoliation Using Kitchen Blenders

Multidimensional Particle Size Distributions and Their Application to Nonspherical Particle Systems in Two Dimensions

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Product

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Electrochemical Exfoliation of MoS₂ Crystal for Hydrogen Electrogeneration

Electrochemical Exfoliation of MoS₂ Crystal for Hydrogen Electrogeneration