Solution‐Phase Synthesis of Few‐Layer Hexagonal Antimonene Nanosheets via Anisotropic Growth

Abstract

Antimonene,a ne merging two-dimensional material, has garnered tremendous interest due to its intriguing structure and fascinating electronic properties.H owever,t he synthesis of high-quality few-layer antimonene nanosheets, which can only be produced by exfoliation or epitaxial growth on exotic substrates,h as greatly hindered the development of this new field. Herein, few-layer hexagonal and functionalized antimonene nanosheets were successfully prepared from SbCl 3 solutions for the first time by exclusively promoting their anisotropic growth in ac olloidal solution. Oleylamine was selected as the reducing agent, rather than oleic acid, and dodecylthiol was key to preventing the formation of antimony oxide.A dditionally,h alide ions adsorbed on the surface also influenced the anisotropic growth of hexagonal antimonene nanosheets.Atomic force microscopy(AFM) revealed that the sheets were % 5nmt hick; Raman spectroscopya nd X-ray diffraction (XRD) revealed ar hombohedral atomic structure (b-Sb) with excellent stability.

Novel two-dimensional monoelemental and ternary materials: growth, physics and application

“…Through the LPE method, several groups have achieved a few layers of antimonene with a thickness below 5 nm [95][96][97]. Recently, Peng et al successfully obtained few-layer hexagonal and functionalized antimonene nanosheets from SbCl 3 solutions for the first time by exclusively promoting their anisotropic growth in a colloidal solution where oleylamine was selected as the reducing agent [89]. Figure 2B shows the transmission electron microscope (TEM) and highresolution TEM (HRTEM) images of the as-prepared hexagonal antimonene nanosheets with a lateral size of 0.5-1.5 μm and thickness of ~5 nm.…”

Advances in photonics of recently developed Xenes

“…Furthermore, antimonene can be transfer to a direct semiconductor under tensile strains, and a bandgap can be opened in few-layer semimetal antimonene after surface functionalized, making it a semiconductor with possible applications in optoelectronic devices [89]. Following theoretical prediction, the experimental synthesis of antimonene by means of mechanical exfoliation [90,91], liquid-phase exfoliation [86,92,93], van der Waals epitaxy [94,95], molecular beam epitaxy [96,97], and solution synthesis [98] was boomingly developed for their practical applications in optoelectronics [93,99], photonics [100,101,125], energy devices [102,103], and biomedicine [104][105][106].…”

Degradable mesoporous semimetal antimony nanospheres for near-infrared II multimodal theranostics

“…Furthermore, semimetals are reported to show decent photothermal performance in the second near-infrared (NIR-II, 1000–1700 nm) range 28 – 31 . Semimetal-based photothermal agents (PTAs) can absorb the energy of NIR-II light and convert it to heat for photothermal therapy (PTT), and simultaneously generate photoacoustic signals for deep-tissue photoacoustic imaging (PAI) 32 – 36 .…”