Non-aqueous solution-processed phosphorene by controlled low-potential electrochemical exfoliation and thin film preparation

Kovalska, Evgeniya; Hartman, Tomáš; Antonatos, Nikolas; Shaban, Polina; Oparin, Egor N.; Zhukova, Maria; Sofer, Zdeněk

doi:10.1039/c9nr10257d

Cited by 38 publications

(31 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alternatively, electrochemical exfoliation (one of the solution-based techniques) is the most convenient, controlled, and straightforward method that can be employed in ambient temperature for large-scale production of 2D TaS 2 . Recently the electrochemical approach has been successfully applied to exfoliate few-layer phosphorene 32 and arsenene 33 and has been pioneered for single-step production of platinoid-decorated phosphorene 34 .…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of twist-angle stacked 2D TaS2

et al. 2021

Self Cite

View full text Add to dashboard Cite

The low-cost, efficient photoelectrosensitive electrodes as an alternative to expensive and complex rigid systems are yet in demand for advanced photoresponsive technology. Here, the light-induced efficiency of electrochemically exfoliated TaS2 nanosheets for hydrogen generation catalysis and photodetectors was demonstrated. Mutual twisting of the exfoliated 2H-TaS2 flakes leads to the redistribution of charge density induced by interlayer interaction of the individual nanosheets. External light irradiation on the TaS2 surface influences its conductivity making the material feasible for photoelectrocatalysis and photodetection. The TaS2-based photoelectrocatalyst demonstrates high hydrogen evolution reaction (HER) activity with the onset overpotential below 575 mV vs. reversible hydrogen electrode (RHE). The TaS2-integrated photodetector in the acidic medium represents its broadband response with the highest photoresponsivity (0.62 mA W−1) toward 420 nm light illumination. This finding will pave the way to a new realization of exfoliated twist-angle stacked TaS2 for photo-induced electrochemistry and sensing.

show abstract

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of twist-angle stacked 2D TaS2

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Germanene samples are quite homogeneous with a slightly wrinkled surface similar to liquid-processed graphene 47 or phosphorene. 48 The quality of the exfoliated germanene lattice was not affected by the washing procedure. High-magnification TEM images of Hedge-Ge in Figure 2 c, d showed the in-plane Ge atoms' order in the y-direction with an interatomic distance of 0.54 nm.…”

Section: Methodsmentioning

confidence: 97%

Edge-Hydrogenated Germanene by Electrochemical Decalcification-Exfoliation of CaGe2: Germanene-Enabled Vapor Sensor

Kovalska

Antonatos²,

Sofer³

2021

Preprint

Self Cite

View full text Add to dashboard Cite

<p><a>Two-dimensional germanene has been recently explored for applications in sensing, catalysis, and energy storage. The potential of this material lies on its graphene-like optoelectronic and chemical properties. However, pure free-standing germanene cannot be found in nature and the synthetic methods are hindering the potentially fascinating properties of germanene. </a>Herein, <a>we report for the first time a single-step synthesis of few-layer germanene by electrochemical exfoliation in non-aqueous environment. As a result of simultaneous decalcification and intercalation of the electrolyte’s active ions, we achieved a low-level hydrogenation of germanene that occurs at the edges of the material. The obtained edge-hydrogenated germanene flakes have a lateral size of several micrometers which possess a cubic structure. We have pioneered the potential application of edge-hydrogenated germanene for vapor sensing and demonstrated its specific sensitivity to methanol and ethanol. We have shown a selective behavior of the germanene-based sensor that appears to increase the electrical resistance in the vapors where methanol prevails. We anticipate that these results can provide a new approach for emerging layered materials with the potential utility in advanced gas sensing.</a></p>

show abstract

“…[252,343,361,362] Electrochemical Intercalation: The electrochemical technique is also employed as a quick and controllable tool for lithium intercalation [344,[363][364][365][366][367][368][369] and considered as an effective technique for exfoliating and/or intercalates layered material to single or multilayered 2D nanosheets, summary of electrochemical exfoliation of various bulk TMDCs summarized in Table 5. [63,[370][371][372] Electrochemical reactions that have occurred on electrode with layered structure will yields as intercalation and/or exfoliation of electrode. [373][374][375] There are some desirable features for electrochemical exfoliation such as fast cycle time, ease of activity, control and potential for scaling up.…”

Section: Intercalation Routesmentioning

confidence: 99%

Advances in Liquid‐Phase and Intercalation Exfoliations of Transition Metal Dichalcogenides to Produce 2D Framework

Raza

Hassan

Ikram

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

(5 of 46)www.advmatinterfaces.de Figure 3. a) Electronic band structure of various 2D materials. Reproduced under the terms of the CC-BY 4.0 license. [95] Copyright 2016, The Authors, published by MDPI. b) Energy level diagrams of various TMDCs. Reproduced with permission. [19] Copyright 2017, Elsevier B.V. c) Archetypal coordination of TMDCs, octahedral coordination forms 1T structures, while triangular prismatic coordination establishes 2H/3R structures. Reproduced with permission. [82] Copyright 2019, Elsevier. d) Structural top view of various polytypes; in 2H, two layers per repeat, the unit shows trigonal prismatic coordination and in 1T, one layer per repeat unit formed octahedral coordination of TMDCs. Reproduced with permission. [89] Copyright 2012, Springer Nature. e) 3D illustration of typical MX 2 structure having chalcogen (yellow atom) and metal (gray atom). Reproduced with permission. [104] Copyright 2011, Springer Nature. f) Schematic demonstration of phonon active modes and their symmetries of bulks and monolayer in MX 2 structures. Reproduced under the terms of the CC-BY 3.0 license. [105]

show abstract

Non-aqueous solution-processed phosphorene by controlled low-potential electrochemical exfoliation and thin film preparation

Abstract: Low-potential anhydrous electrochemistry is an extremely effective method for the preparation of high-quality few-layer phosphorene in high yield.

Cited by 38 publications

References 45 publications

Photocatalytic activity of twist-angle stacked 2D TaS2

Photocatalytic activity of twist-angle stacked 2D TaS2

Edge-Hydrogenated Germanene by Electrochemical Decalcification-Exfoliation of CaGe2: Germanene-Enabled Vapor Sensor

Advances in Liquid‐Phase and Intercalation Exfoliations of Transition Metal Dichalcogenides to Produce 2D Framework

Contact Info

Product

Resources

About