Towards Antimonene and 2D Antimony Telluride through Electrochemical Exfoliation

Abstract

Two-dimensional (2D) layered antimony (Sb) and antimony telluride (Sb 2 Te 3 )a re two valuable materials for optoelectronic devices and thermoelectric applications. Preparing high-quality sheets of thesem aterials is the initial phase to promotet heir expected issues. Herein, micrometer-sized few-to-multilayered sheetso fS ba nd Sb 2 Te 3 have been obtained by electrochemical exfoliation. The layered rhombo-hedralS bw as exfoliated in Na 2 SO 4 and Li 2 SO 4 electrolytes by anodic-cationic intercalation, and Sb 2 Te 3 was exfoliated in Na 2 SO 4 .T hese findings are important contributions for the solution-based room-temperature electrochemical exfoliation, whichi ss table under glove-box-free conditions, to further improve the productiono fh igh-quality exfoliated sheets. exfoliated switchingv oltage in 4and 10 min. In the insert the height profilesa long the x axis of some selected sheets.

Electrophoretic deposition of antimonene for photoelectrochemical applications

“…In this context, a new monoelemental 2D material that has recently gained a lot of attention is the so-called antimonene (2D-Sb). As phosphorene, this 2D material is another pnictogen that has been isolated as monolayer or few-layers (FL) by several methods including mechanical [8], liquid-phase (LPE) or electrochemical exfoliation, [9] as well as epitaxial growth [10,11]. Antimonene has been widely investigated due to its high stability under ambient conditions and their predicted physical properties such as strong spinorbit coupling, topological properties or its low band gap suitable for optoelectronic applications [12,13].…”

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

“…2D Nanosheets: Recently, electrochemical Li-intercalation approach was utilized to synthesize few-layer silicene nanosheets. [398] Lin et al [139] verified the electrochemical cathodic exfoliation of bulk MoS 2 crystals with the aid of THAB could produce solution process-able, phase-pure semiconducting 2H MoS 2 nanosheets with high uniformity. Among this exfoliation scheme, THA+ cations were incorporated into MoS 2 layers that cause to induce considerable amplification in the interlayer distance if respective MoS 2 crystal.…”

“…Recently, electrochemical Li‐intercalation approach was utilized to synthesize few‐layer silicene nanosheets. [ 398 ] Lin et al. [ 139 ] verified the electrochemical cathodic exfoliation of bulk MoS 2 crystals with the aid of THAB could produce solution process‐able, phase‐pure semiconducting 2H MoS 2 nanosheets with high uniformity.…”

Two‐Dimensional Metal Telluride Atomic Crystals: Preparation, Physical Properties, and Applications

“…Pumera et al. [ 59 ] prepared micro‐scale few‐layer Sb 2 Te 3 nanosheets via electrochemical exfoliation. As shown in Figure 2b, the exfoliation of bulk Sb 2 Te 3 is performed with an initial positive voltage of +5 V and a current of 1 mA in 0.5 m Na 2 SO 4 solution.…”