Hydrothermal growth and gas sensing property of flower-shaped SnS₂ nanostructures

Abstract

Unusual 3D flower-shaped SnS2 nanostructures have been synthesized using a mild hydrothermal treatment in the presence of octyl-phenol-ethoxylate (Triton X-100) at 160 °C. The nanostructures have an average size of 1 µm, and consist of interconnected nanosheets with thicknesses of about 40 nm. Based on time-dependent experimental results, we ascribe the oriented attachment mechanism to the growth of the SnS2 nanostructures. The nonionic surfactant Triton X-100 plays a key role in the formation of the flower-like morphology. Room temperature gas-sensing measurements show that the 3D SnS2 nanostructures could serve as sensor materials for the detection of NH3 molecules.

Thin 2D: The New Dimensionality in Gas Sensing

“…Shi et al fabricated gas sensors consisting of flower-like SnS2 nanostructures. The results showed that when the concentration of NH3 is as low as 5 ppm, the sensitivity could reach as high as 21.6% at room temperature [59]. SnS2 nanoflakes have been also reported for efficient humidity and alcohol sensing at room temperature [60].…”

“…Notably, this high response and the ultra-fast response/recovery speed of the sensor are related to the hollow and hollowed-out nanostructures assembled by the porous ultrathin nanosheets. Unusual 3D flower-shaped SnS2 nanostructures have been synthesized using a mild hydrothermal treatment in the presence of octyl-phenol-ethoxylate (Triton X-100) at 160 °C [59]. The nanostructures have an average size of 1 μm, and consist of interconnected nanosheets with thicknesses of about 40 nm.…”

“…However, despite their technological relevance, the properties that can be expected from such systems are still largely unknown. At the same time, challenges still exist regarding the reliable Unusual 3D flower-shaped SnS 2 nanostructures have been synthesized using a mild hydrothermal treatment in the presence of octyl-phenol-ethoxylate (Triton X-100) at 160 • C [59]. The nanostructures have an average size of 1 µm, and consist of interconnected nanosheets with thicknesses of about 40 nm.…”

Characterization and Ammonia Sensing Properties of 2D SnS2/SnO2−x Flakes-Based Films

“…Among them, the tin disulphide (SnS2), a n-type semiconductor with a band gap of 2.18-2.44 eV, has been widely used in the fields of solar cells, photocatalysts, lithium ion batteries, filed effect transistors and biosensors [5][6][7][8]. In particular, the SnS2 is attracting particular interest as a sensitive material for ammonia (NH3) detection due to its unique properties [9][10][11].…”

N-Tipi SnS2 Yarıiletken İnce Filmlerin Hazırlanması ve Karakterizasyonu

“…Kalay ve kükürdün doğada bol olması ve toksik olmamamsı da önemli avantajlarındandır [5,6]. SnS2 ince filmleri fotodedektörlerde [7], gas sensörlerinde [8], güneş pillerinde [9], lityum iyon bataryalar için elektrot olarak [10], transistörlerde [11], diyotlarda [12] süperiletken aygıtlarda [13] vs. gibi birçok alanda kullanılmaktadır.…”