Well-Aligned Arrays of CuO Nanoplatelets

Abstract

This paper reports well-aligned arrays of CuO nanoplatelets synthesized through a hydrothermal route without template's assistance. The surface of well-aligned arrays of CuO nanoplatelets looks like a wall. These nanoplatelets, possessing four clear edges, are 50-80 nm in thickness, 150-250 nm in width, and 0.8-1.5 microm in length. Electron microscopic detection shows that the nanoplatelet grows along the [010] direction. The Ostwald ripening mechanism has been used to describe the growth of CuO nanoplatelets. In addition, the optic and electrochemical properties of as-obtained products have been discussed. And the arrays of CuO nanoplatelets exhibit the blue shift in UV-visible spectra, a slow capacity fading rate, and a relatively high Coulombic efficiency in charge-discharge process.

Room-Temperature High-Performance H2S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

“…37 The larger E g values of various CuO nanostructures have been reported, such as 3.48 eV for ultra-long CuO nanowires, 38 3.55 eV for CuO nanoplates, 39 and 3.02 eV for CuO nanoplatelets. 40 It has been reported that the specific sites of molecular adsorption were remarkably influenced by the band gap energy, and thus could remarkably influence the gas sensitive property. 37,38 3.2 Sensing performance using CuO thin films, the detection limit to H 2 S was higher than 100 ppb.…”

Microemulsion Synthesis of Copper Oxide Nanorod-Like Structures

“…The band at 425 cm -1 can be assigned to the Cu-OH stretching mode of residual Cu(OH) 2 [61] which could be hidden in the tails of the diffraction patterns. The absorption peaks at around 418 cm -1 , 536 cm -1 and 590 cm -1 are due to stretching of the Cu-O bond along the [101] direction [62][63][64]. The peak at ca.…”

Ultrasound‐Assisted Synthesis of CuO Nanorods in a Neat Room‐Temperature Ionic Liquid

“…[34] The bandgap of CuO with various morphology and particle sizes has been determined. Values such as 2.36 eV for CuO rodlike, [20] 2.43 eV for CuO spherical nanoparticles, [18] and 3.02 eV for CuO nanoplatelets [37] have been reported, all of them larger than the bulk value. Nitrogen adsorption-desorption measurements of the products were performed to determine the specific surface area of the CuO nanorods.…”