General Route to Single-Crystalline SnO Nanosheets on Arbitrary Substrates

Abstract

Novel pure tin monoxide (SnO) nanosheets for use in future functional nanoscale devices were produced on indium tin oxide/glass and SiO 2 /Si substrates by a thermal chemical vapor deposition process without the use of catalysts or a vacuum system. The SnO nanosheets were grown purely on the substrates without the coexistence of other nanostructures. High-resolution transmission electron microscopy investigations revealed that the structurally uniform SnO nanosheets without planar defects that were produced had preferred growth directions of ([110] and ([1 j 10] as well as a single-crystalline tetragonal structure. This work provides a general route for the facile synthesis of single-crystalline SnO nanosheets on arbitrary substrates with single, poly, or amorphous crystal structures. In addition, the selective formation of SnO nanosheets on Pt-deposited patterned SiO 2 /Si substrates was successfully accomplished.

Facile synthesis of self-assembled SnO nano-square sheets and hydrogen absorption characteristics

“…Exploration and investigation of 2D nanostructures, such as nanosheets, nanoplates, and nanowalls, have become major topics of nanoscience and nanotechnology researches. Previously, various physical/chemical techniques have been employed to synthesize SnO micro and nanostructures such as laser ablation technique [6], vapor transport process [7], coprecipitation, thermal evaporation [8], thermal chemical vapor deposition (CVD) [9], mechanical ball milling [5], sonicationassisted precipitation technique, solvothermal, pulsed laser deposition PLD, and microwave assisted methods [10][11][12]. As one of the typical approaches, hydrothermal approach is superior to other methods due to its facile manipulation, less expensive and simple equipments.…”

“…As one of the typical approaches, hydrothermal approach is superior to other methods due to its facile manipulation, less expensive and simple equipments. To date, a variety of SnO distinct morphologies has been successfully synthesized such as particles, diskettes [8], platelet [12], flowers [13], meshes consisting of nano-ribbons [14], whiskers [15], sheets [9], clinopinacoid type with nano-rectangle strips [16], belts and dendrites [17]. However, the implementation of micro-nanostructure's preparation of SnO with well-controlled size and morphology by facile synthesis is still a great challenge.…”

Emerging opportunities in the two-dimensional chalcogenide systems and architecture

“…In PVD the only ''precursor" is the compound itself, which is heated to sublimation under high vacuum, and carried downstream by an inert gas where it is deposited onto a receiving substrate. Physical vapor deposition has successfully been used to produce a number of 2D materials, in particular the groups IV and V chalcogenides [12,29,[66][67][68][69][70][71][72][73]. These growths generally do not involve a catalyst as the highly reactive chalcogenide vapor would degrade the metal-based catalysts at elevated temperatures [67].…”

Tin passivation in alkaline media: Formation of SnO microcrystals as hydroxyl etching product

“…The results allow proposing a complete mechanism for the electrochemical tin passivation process in alkaline media. Moreover, the formation of SnO platelet microcrystals during the passivation process is proposed as a simple electro-synthetic alternative to wet-chemistry methods [23][24][25][26][27] or to physical methods such as pulsed laser deposition [28], electron beam evaporation [29,30], sputtering [31] or chemical vapor deposition (CVD) [32]. Potential applications of SnO-based materials as anode in Li-ion batteries [23][24][25][26], catalyst for ethanol oxidation [27,33], p-type semiconductor in optoelectronic devices [28,30,31] or precursor to attain new SnO 2 morphologies [34] have been suggested.…”