Insights into the capping and structure of MoS2 nanotubes as revealed by aberration-corrected STEM

Deepak, Francis Leonard; Mayoral, Álvaro; Steveson, Andrew J.; Mejía-Rosales, Sergio; Blom, Douglas A.; José–Yacamán, Miguel

doi:10.1039/c0nr00484g

Cited by 32 publications

(22 citation statements)

References 42 publications

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“…This interest is driven by the unique structure, high surface area, good mechanical [1] and thermal stability, and unusual optical, chemical, magnetic, and catalytic properties of these nanostructures [2]. The great diversity of composition, shape, and size of metallic NPs [3, 4] have also allowed researchers exploring their applications in related fields, such as catalysis [5], optical devices [6], and electronic components [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CuNP-modified carbon electrodes obtained by pyrolysis of paper

Durán

Benavidez

Giuliani

et al. 2016

Sensors and Actuators B: Chemical

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A one-step approach for the synthesis and integration of copper nanoparticles (CuNPs) onto paper-based carbon electrodes is herein reported. The method is based on the pyrolysis (1000 °C under a mixture of 95% Ar / 5% H2 for 1 hour) of paper strips modified with a saturated solution of CuSO4 and yields to the formation of abundant CuNPs on the surface of carbonized cellulose fibers. The resulting substrates were characterized by a combination of scanning electron microscopy, EDX, Raman spectroscopy as well as electrical and electrochemical techniques. Their potential application, as working electrodes for nonenzymatic amperometric determination of glucose, was then demonstrated (linear response up to 3 mM and a sensitivity of 460 ± 8 μA·cm−2·mM−1). Besides being a simple and inexpensive process for the development of electrochemically-active substrates, this approach opens new possibilities for the in-situ synthesis of metallic nanoparticles without the traditional requirements of solutions and adjuvants.

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Section: Introductionmentioning

confidence: 99%

Synthesis of CuNP-modified carbon electrodes obtained by pyrolysis of paper

Durán

Benavidez

Giuliani

et al. 2016

Sensors and Actuators B: Chemical

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“…Similar to graphene2, layered transition-metal dichalcogenides (TMDs), MX 2 (M = Mo, W, Ta, or Nb, and X = S, Se, or Te) are considered as promising electronic and optoelectronic materials567891011 and have been synthesized1213141516. MoS 2 , an important delegate of TMDs, arouses researchers' keen interest in recent years1516171819.…”

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confidence: 99%

Theoretical Prediction of Electronic Structure and Carrier Mobility in Single-walled MoS2 Nanotubes

Xiao

Long

et al. 2014

Sci Rep

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We have investigated the electronic structure and carrier mobility of armchair and zigzag single-walled MoS2 nanotubes using density functional theory combined with Boltzmann transport method with relaxation time approximation. It is shown that armchair nanotubes are indirect bandgap semiconductors, while zigzag nanotubes are direct ones. The band gaps of single-walled MoS2 nanotubes are along with the augment of their diameters. For armchair nanotubes (5 ≤ Na ≤ 14), the hole mobility raise from 98.62 ~ 740.93 cm2V−1s−1 at room temperature, which is about six times of the electron mobility. For zigzag nanotubes (9 ≤ Na ≤ 15), the hole mobility is 56.61 ~ 91.32 cm2V−1s−1 at room temperature, which is about half of the electron mobility.

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“…Electronic doping was also carried out to modify their properties . The typical high‐resolution TEM images of MoS 2 nanotubes are shown in Figure e; certain features like molecular layers, stacking faults, and atomically rough surfaces are clearly observed …”

Section: Overview Of Mos2 Physical Propertiesmentioning

confidence: 99%

Molybdenum Disulphide Heterointerfaces as Potential Materials for Solar Cells, Energy Storage, and Hydrogen Evolution

Naik

Rabinal

2020

Energy Tech

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Molybdenum disulphide (MoS2), an ideal semiconductor, belongs to the group of 40 well‐identified transition metal dichalcogenides. These have unique chemical bonding; in an ideal case they do not feature dangling bonds and hence possess a layered‐like atomic structure, such that strong intraplane and weak interplane bondings exist. Hence, MoS2 can be peeled into a precisely controlled number of layers; the bulk with Eg = 1.2 eV can be reduced to a unit cell‐thick layer (monolayer) with Eg = 1.89 eV. However, in reality, both bulk and monolayers possess many types of atomic defects associated with in‐plane, edge, grain boundaries, etc. As a result, MoS2 exhibits many interesting and tunable optoelectronic properties suitable for a wide range of applications. Interestingly, its basic polyhedral form (MoS6) undergoes a structural change that leads to many polymorphic phases, the three in bulk and the five in monolayer. Theoretical predictions and experimental observations clearly confirm that MoS2 and its interfaces with other materials can be significantly important for energy conversion and storage applications, which are emerging and critically important topics of modern science and society. This Review provides an overview of the past few years of research and developments on these topics.

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Insights into the capping and structure of MoS2 nanotubes as revealed by aberration-corrected STEM

Cited by 32 publications

References 42 publications

Synthesis of CuNP-modified carbon electrodes obtained by pyrolysis of paper

Synthesis of CuNP-modified carbon electrodes obtained by pyrolysis of paper

Theoretical Prediction of Electronic Structure and Carrier Mobility in Single-walled MoS2 Nanotubes

Molybdenum Disulphide Heterointerfaces as Potential Materials for Solar Cells, Energy Storage, and Hydrogen Evolution

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