Rapid synthesis of vertically aligned α-MoO₃ nanostructures on substrates

Abstract

We report a procedure for large scale, reproducible and fast synthesis of polycrystalline, dense, vertically aligned α-MoO3 nanostructures on conducting (FTO) and non-conducting substrates (Si/SiO2) by using a simple, low-cost hydrothermal technique.

Oxygen vacancies in oxidized and reduced vertically aligned α-MoO3 nanoblades

“…The XRD patterns are consistent with orthorhombic α-MoO 3 (JCPDS: 00-005-508, space group Pbnm and unit cell parameters a = 13.86 Å, b = 3.70 Å and c = 3.96 Å). 20,21 The asymmetric oxygen lattice sites in the crystal are denoted as O 1 , O 2 , O 3 , where O 1 is at the apex of the octahedra, O 2 is at a corner-sharing position, and O 3 is edge-sharing. The (vdW) interaction between adjacent layers is mediated via the apical oxygen atoms in the y -plane.…”

“…Laterally grown α-MoO 3 nano-blades have been synthesized directly on seeded fluorine doped tin oxide substrates (FTO) (15 Ω cm −2 ), via the hydrothermal technique. 20 Briefly, 14 × 14 mm FTO substrates were subjected to a standard cleaning procedure by sonication for 5 min in acetone and isopropanol each, followed by sonication in ethanol for 15 min and drying in a nitrogen flow. The cleaned substrates were treated with UV/ozone (Ossila) for 20 min.…”

“…Laterally grown α-MoO 3 nano-blades have been synthesized directly on seeded fluorine doped tin oxide substrates (FTO) (15 Ω/cm 2 ), via hydrothermal technique. 20 Briefly, 14x14 mm FTO substrates were subjected to a standard cleaning procedure by sonication for 5 min in acetone and…”

Controlled local orientation of 2D nanomaterials in 3D devices: methods and prospects for multifunctional designs and enhanced performance

“…Through a hydrothermal reaction, vertically aligned nanosheets have been grown on various substrates under well-controlled growth parameters and are applicable to diverse material types and geometries such as nanowires, nanospheres, nanosheets, and nanoribbons. [192][193][194][195][196] Generally, the morphology of the grown nanostructures can be tuned by controlling the template seed growth, reaction temperature, pH and by adding surfactants. [197][198][199] Fig.…”

Achieving Both Ultrahigh Electrical Conductivity and Mechanical Modulus of Carbon Films: Templating‐Coalescing Behavior of Single‐Walled Carbon Nanotube in Polyacrylonitrile

“…[16][17][18] In addition, the preferential arrangement of the crystallites on the filler surface obtained by the templating effect greatly improves the microstructure orientation. [19][20][21][22] This templating effect is referred to as the pseudoepitaxial crystal growth, and the microstructural region composed of the templated crystals is known as the interphase. [5,23] Hence, the both electrical and mechanical performances of carbon films from polymeric nanocomposites are dominantly determined by the extent and microstructural alignment of the interphase.…”