Patterned Growth of ZnO Nanorod Arrays on a Large-Area Stainless Steel Grid

Abstract

Large-area ZnO nanorod arrays have been synthesized successfully on a stainless steel grid at a mild growth temperature of around 400 degrees C. The as-grown ZnO nanorods have uniform diameters of about 30-50 nm with approximately 5 nm tips. Patterned growth can be realized by engineering the shape of the grid in the growth. Photoluminescence demonstrates a sharp strong UV peak and a broad green band. The growth method provides a promising way of producing nanorod arrays with good controllability in patterns and morphologies, which will be critical in potential application such as high-efficiency filtering and catalysts.

Gas-flow assisted bulk synthesis of V-type SnO2 nanowires

“…Thus, these V-, W-and Z-type NWs keep the monolithically single crystalline structure and have uniform-diameter arms. The effect of gas flow on the morphology of SnO 2 nanostructures is similar to those on ZnO nanostructures [15,16] to some degree.…”

One-Dimensional Zinc Oxide Nanomaterials for Application in High-Performance Advanced Optoelectronic Devices

“…When the Au film was 3 nm thick, the ZnO nanowires had diameters of 40-70 nm and lengths of 5-10 µm [5]. In addition to using external catalysts, Zn itself can act as a catalyst under certain conditions to prepare 1D ZnO nanostructures [48]. The influence of different catalyst thin films on the morphology and even nucleation process of ZnO nanomaterials varies.…”

“…Osgoods et al systematically studied ZnO nanowire growth using diverse metal catalysts (Au, Ag, Ni, and Fe) and substrates (Si, sapphire) with different structures and crystal orientation. SEM images of the nanowires are shown in Figure 3 [41][42][43][44][45][46][47][48][49]. The ZnO nanowires grew through the vapor-solid mechanism in the case of an iron (Fe) catalyst and via the VLS process using Au, Ag, or Ni as the catalyst.…”

High-Yield Synthesis and Properties of Symmetrical Comb-Like ZnO Nanostructures on Aluminum Foil Substrate

“…Among eight sets of optical modes for singlecrystalline ZnO, the A 1 , E 1 , and E 2 modes are Raman active, E 2 modes are Raman active only while the A 1 and E 1 are infrared active and therefore split into two component, i.e., longitudinal (LO) and transverse (TO) optical components. 34 Figure 5 shows the typical Ramanscattering spectrum of the comb-like ZnO nanostructures grown on Al-foil measured with the Ar + (513.4 nm) laserline as the exciton source. The sharpest and dominated peak in the spectrum at 438 cm −1 , assigned as Ramanactive E 2 mode, is a characteristic peak for the wurtzite hexagonal phase pure ZnO.…”