Growth and Characterization of ZnO Nanoporous Belts

Abstract

ZnO nanoporous belts with a smooth surface and high pore density have been successfully synthesized; the simple growth method is applicable to produce high-yield single-crystalline ZnO nanoporous belts with a relatively high purity and at a low cost. The morphology and microstructure and optical properties of ZnO nanoporous belts were analyzed by X-ray diffraction (XRD), Fourier transform infrared system (FTIR), scanning electron microscope (SEM), field-emission transmission electron microscope (FETEM), selective area electron diffraction (SAED), and photoluminescence (PL) spectroscopy. Results reveal that ZnO nanoporous belts possess good crystalline quality. The formation mechanism of the special ZnO microstructure is discussed, emphasizing the effect of polar orientation on the nucleation and growth of ZnO nanoporous belts.

Confinement effects in ultrathin ZnO polymorph films: Electronic and optical properties

“…Bulk gap widths and densities of states (DOS) have been scrutinized by first principles simulations 10,11 and we have recently disentangled the effects of band narrowing and of electrostatics in the modifications of quasi particle, absorption and electron energy loss spectra 12 . Beyond bulk properties, the possibility of tuning electronic and optical properties through a reduction of dimensionality has fostered advances in the fabrication and structural characterization of ZnO nanostructures [13][14][15][16][17][18][19] and thin films on various substrates [20][21][22][23][24][25][26][27][28][29][30] , with a range of techniques and under a variety of experimental conditions. In particular in ultra-thin films, theoretical and experimental works indicate important variations of the atomic structure as a function of thickness [31][32][33][34] .…”

Structural and Optical Properties of ZnO Nanowires Doped with Magnesium

“…At room temperature, with a wide band gap of 3.37 eV and large exciton binding energy of 60 meV, ZnO has been recognized as one of the most important semiconductor materials in scientific research and technological applications [2]. To date, various ZnO nanostructures have been successfully synthesized, including nanorods, nanotubes, nanowires, nanobelt, and nanobridge [3].…”

Simple synthesis of ZnO nanoflowers and its photocatalytic performances toward the photodegradation of metamitron

“…Zinc oxide (ZnO), a widely known important n-type semiconductor with a wide-band-gap of 3.37 eV, has been receiving broad attention due to its distinguished performance in optoelectronics, catalysis, chemical sensors and transducers [9][10][11]. In the past years, various approaches like sonochemical route [12], thermal evaporation [13], chemical precipitation method [14], microwave hydrothermal [15], employ ionic liquids, and hydrothermal method [16] have been developed to synthesize ZnO nanostructures with various morphologies, including nanoflowers [17], nanowires [18], nanobelts [19], nanorods [20], and nanotubes [21] and so on. Among them, three-dimensional (3D) nanostructures are of great interest to scientists owing to their novel architectural nanostructures may provide good performance in photocatalysis and photoluminescence.…”