Spontaneous exfoliation and tailoring of MoS<sub>2</sub>in mixed solvents

Dong, Lei; Lin, Shan; Liu, Yang; Zhang, Jiajia; Yang, Chao; Yang, Dong; Lu, Hongbin

doi:10.1039/c4cc07238c

Cited by 118 publications

(100 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different concentrations (0.2, 0.4, and 0.6 vol %) of H 2 O 2 solution resulted in the formation of different sizes of the interstitial space in the yolk–shell MoS 2 @C microspheres, denoted as MoS 2 @C‐0.2 %, MoS 2 @C‐0.4 %, and MoS 2 @C‐0.6 %, respectively. The etching mechanism can be described by the chemical reaction given in Equation

true MoS_{2} + 9 normalH_{2} normalO_{2} \to MoO_{2}^{2 +} + 2 SO_{4}^{2 -} + 2 normalH^{+} + 8 normalH_{2} normalO

…”

Section: Resultsmentioning

confidence: 99%

Uniform Yolk–Shell MoS₂@Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries

Pan

Zhang

2017

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

As an electrode material for lithium-ion batteries (LIBs), MoS has attracted much attention because of its high capacity and low cost. However, the rational design of a novel electrode structure with a high capacity, fast charge/discharge rate, and long cycling lifetime remains a great challenge. Herein, a environmentally friendly etching strategy is reported for the construction of monodisperse, inner void-controlled yolk-shell MoS @carbon microspheres. The resulting anode reveals an initial discharge capacity up to 1813 mAh g , a high reversible capacity (1016 mAh g ), excellent cycling stability (200 cycles), and superior rate performance. Such microspheres consist of nanosized MoS yolks (≈280 nm), porous carbon shells (≈25 nm) and well-controlled internal voids in between, opening a new pathway for the optimization of the electrochemical properties of MoS -based anodes without sacrificing their capacity. In addition, this etching strategy offers a new method for the development of functional, hollow MoS -based composites.

show abstract

true MoS_{2} + 9 normalH_{2} normalO_{2} \to MoO_{2}^{2 +} + 2 SO_{4}^{2 -} + 2 normalH^{+} + 8 normalH_{2} normalO

…”

Section: Resultsmentioning

confidence: 99%

Uniform Yolk–Shell MoS₂@Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries

Pan

Zhang

2017

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

show abstract

“…The obtained 2D MoS 2 sheets exhibited a lateral dimension of ≈300 nm and a thickness of 1.17 nm. Dong and co‐workers presented the spontaneous exfoliation of MoS 2 powders in H 2 O 2 ‐NMP mixed solvents under mechanical stirring for 10 h . Besides the oxidation effect, H 2 O 2 was reckoned to induce size evolution of MoS 2 nanosheets (single and few layer) from the micro‐ to the nanoscale.…”

Section: Direct Ultrasonic Exfoliation In Liquidmentioning

confidence: 99%

Production of Two‐Dimensional Nanomaterials via Liquid‐Based Direct Exfoliation

Niu

Coleman

Zhang

et al. 2015

Small

447

332

View full text Add to dashboard Cite

Tremendous efforts have been devoted to the synthesis and application of two-dimensional (2D) nanomaterials due to their extraordinary and unique properties in electronics, photonics, catalysis, etc., upon exfoliation from their bulk counterparts. One of the greatest challenges that scientists are confronted with is how to produce large quantities of 2D nanomaterials of high quality in a commercially viable way. This review summarizes the state-of-the-art of the production of 2D nanomaterials using liquid-based direct exfoliation (LBE), a very promising and highly scalable wet approach for synthesizing high quality 2D nanomaterials in mild conditions. LBE is a collection of methods that directly exfoliates bulk layered materials into thin flakes of 2D nanomaterials in liquid media without any, or with a minimum degree of, chemical reactions, so as to maintain the high crystallinity of 2D nanomaterials. Different synthetic methods are categorized in the following, in which material characteristics including dispersion concentration, flake thickness, flake size and some applications are discussed in detail. At the end, we provide an overview of the advantages and disadvantages of such synthetic methods of LBE and propose future perspectives.

show abstract

“…Also good wetting capability of solvent is needed for layer surfaces. It is reported that H 2 O 2 can induce the spontaneous exfoliation of MoS 2 in NMP [29]. In detail, 20 mg MoS 2 flakes were dissolved in 20 mL of mixed solvents of Hydrogen Peroxide (H 2 O 2 ) and N-methyl-2-pyrrolidone (NMP).…”

Section: Preparation Of Mos 2 Nanosheetsmentioning

confidence: 99%

A study on the interaction between molybdenum disulfide and rhodamine B by spectroscopic methods

2016

View full text Add to dashboard Cite

This work reports the confluence of static and dynamic fluorescence quenching of rhodamine B (RhB) by chemically exfoliated molybdenum disulfide (MoS 2 ) nanosheets. Both steady state and time-resolved fluorescence quenching measurements were carried out to elucidate the process of energy transfer from RhB to MoS 2 . The interactive forces investigated through evaluation of thermodynamic parameters from temperature dependent fluorescence measurements are found to be hydrophobic in nature. The negative value of Gibbs free energy (DG) indicates spontaneity of the adsorption process of RhB-MoS 2 system. The binding affinity of RhB-MoS 2 system is also investigated using UV/Vis spectrophotometer.

show abstract

Spontaneous exfoliation and tailoring of MoS₂in mixed solvents

Cited by 118 publications

References 33 publications

Uniform Yolk–Shell MoS₂@Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries

Uniform Yolk–Shell MoS₂@Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries

Production of Two‐Dimensional Nanomaterials via Liquid‐Based Direct Exfoliation

A study on the interaction between molybdenum disulfide and rhodamine B by spectroscopic methods

Contact Info

Product

Resources

About

Spontaneous exfoliation and tailoring of MoS2in mixed solvents

Cited by 118 publications

References 33 publications

Uniform Yolk–Shell MoS2@Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries

Uniform Yolk–Shell MoS2@Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries

Production of Two‐Dimensional Nanomaterials via Liquid‐Based Direct Exfoliation

A study on the interaction between molybdenum disulfide and rhodamine B by spectroscopic methods

Contact Info

Product

Resources

About

Spontaneous exfoliation and tailoring of MoS₂in mixed solvents

Uniform Yolk–Shell MoS₂@Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries

Uniform Yolk–Shell MoS₂@Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries