Modulating the properties of SnO₂nanocrystals: morphological effects on structural, photoluminescence, photocatalytic, electrochemical and gas sensing properties

Abstract

Tin dioxide (SnO2) is a material of ever increasing scientific attention as a result of its many constructive and varied physical properties: different morphological structures of SnO2 nanocrystals modulate the performance of diverse applications.

Elucidation of the Crystal Growth Characteristics of SnO2 Nanoaggregates Formed by Sequential Low-Temperature Sol-Gel Reaction and Freeze Drying

“…Their observed bandgaps were estimated to be 3.1, 3.0, 2.9, and 3.1 eV for Method 1–Day 2, Method 2–Day 2, Method 3–Day 2, and Method 3–Day 7, respectively. It was reported that the narrower bandgaps compared to a well-known bandgap of 3.6 eV [ 2 , 25 ] is due to the elevation of the valence-band maximum of SnO 2 induced by the oxygen vacancies [ 22 , 26 ]. The bandgap of Method 1–Day 8 and Method 2–Day 7 was 3.6 eV.…”

“…Over the last two decades, the synthesis of self-assembled tin oxide (SnO 2 ) semiconductor nanoparticles has been a fascinating research area because of their potential applications in gas sensing, lithium-ion batteries, solar cells, and catalysts for various organic reactions [ 1 ]. These versatile applications associated with their photophysical, chemical, and electronic properties can be realized by tuning certain factors, such as the size, shape, crystallinity, and electronic states of the SnO 2 nanoparticles [ 2 ]. In particular, self-assembled 3D SnO 2 nanoaggregates with high surface areas [ 3 , 4 ] have received considerable attention.…”

Nontoxic photoluminescent tin oxide nanoparticles for cell imaging: deep eutectic solvent mediated synthesis, tuning and mechanism

“…Broadening of the O-1s peak on the higher energy side indicates presence of oxygen deficient tin oxide. 42 From the XPS data, the ratio of O/Sn was calculated using the eqn. The TEM images for the NPs obtained via e-beam irradiation depicts self-assembling of the initially formed small spherical globules into larger sized ones, which further gets interconnected to form an entangled structure (fig.…”

Preparation and study of the Structural, Morphological and Optical properties of pure Tin Oxide Nanoparticle doped with Cu

“…Strongly thermally stable in the air up to 500°C 9 , Tin has two types of oxides; stannous oxide (SnOromarchite) and stannic oxide (SnO 2 cassiterite) 10 . Tin oxide (SnO 2 ) is one of the (n-type) metallic semiconductors that has a wide gap (3.6ev) in room temperature, and its excellent properties make it a suitable material for many applications, in transparent electrodes, solar cells, gas-sensing photocatalysts, photoelectric devices 11,12 One of the influences that affect the performance of the sensors is the increase in the surface area , as attention has been paid to preparing crystalline materials with a large surface area where the properties of crystalline materials are very sensitive on the surface of atomic structures, especially applications such as solar cells and gas sensors [13][14][15] . Oxide nanoparticles can be prepared by both Physical and Chemical methods.…”