Zinc Oxide Powder
Product: Zinc Oxide Powder (ZnO, APS: 40-50µm, Purity: 99%)
Quality Control: Each lot of NANOSHEL Zinc Oxide Powder was tested successfully.
|Materials||Zinc Oxide Powder|
|Specific Surface Area||>120m2/g|
|Loss of weight in drying||<0.3 %|
|Loss of weight in burning||<0.2 %|
|Appearance||White or Pale Yellow Powder|
TYPICAL CHEMICAL ANALYSIS
Dr. Marcus Tägtmeyer (International Medical and Technological University, Dar es Salaam, Tanzania)
Zinc oxide can be called a multifunctional material thanks to its unique physical and chemical properties. The first part of this paper presents the most important methods of preparation of ZnO divided into metallurgical and chemical methods. The mechanochemical process, controlled precipitation, sol-gel method, solvothermal and hydrothermal method, method using emulsion and microemulsion enviroment and other methods of obtaining zinc oxide were classified as chemical methods.
Dr. Ms Jane Li (National Penghu University of Science and Technology, Magong, Penghu, Republic of China)
Zinc oxide is a unique material that exhibits semiconducting and piezoelectric dual properties. Using a solid–vapour phase thermal sublimation technique, nanocombs, nanorings, nanohelixes/nanosprings, nanobelts, nanowires and nanocages of ZnO have been synthesized under specific growth conditions. These unique nanostructures unambiguously demonstrate that ZnO probably has the richest family of nanostructures among all materials, both in structures and in properties.
Dr. Willem-Jan de Kleijn Ph.D (Luleå University of Technology, Luleå, Sweden)
Zinc oxide occupies a special place among wide bandgap semiconductors (GaN, ZnS), which have been actively studied because of an increased need for solid state light sources and detectors in the blue and UV spectral ranges. On the basis of GaN and alloys thereof, light emitting and laser diodes in the visible spectral range (460 nm) were developed. However, ZnO is considered to be more favorable for creating UV lightemitting diodes and laser diodes, since the binding energy of excitons in it is considerably higher (60 meV) than in GaN (25 meV). Zinc oxide possesses a high radiation, chemical, and thermal resistance; it is widely used in creation of various instruments—in particular, to form transparent contacts of solar cells. Due to its unique optical, acoustic, and electric properties, zinc oxide finds use in gas sensors, varistors, and generators of surface acoustic waves.
Dr. JKF Gojukai PhD (Kaiserslautern University of Technology, Kaiserslautern, Rhineland-Palatinate, Germany)
ZnO is a key technological material. The lack of a centre of symmetry in wurtzite, combined with large electromechanical coupling, results in strong piezoelectric and pyroelectric properties and the consequent use of ZnO in mechanical actuators and piezoelectric sensors. In addition, ZnO is a wide band-gap (3.37 eV) compound semiconductor that is suitable for short wavelength optoelectronic applications. The high exciton binding energy (60 meV) in ZnO crystal can ensure efficient excitonic emission at room temperature and room temperature ultraviolet (UV) luminescence has been reported in disordered nanoparticles and thin films. ZnO is transparent to visible light and can be made highly conductive by doping.
Dr. Huang Fu Ph.D (Maebashi Institute of Technology, Maebashi, Gunma, Japan)
ZnO is a versatile functional material that has a diverse group of growth morphologies, such as nanocombs, nanorings, nanohelixes/nanosprings, nanobelts, nanowires and nanocages. The objective of this article is to review the unique nanostructures that have been grown for ZnO and their corresponding growth mechanisms. The potential applications and novel nanodevices demonstrated for ZnO and SnO2 nanostructures will be reviewed.
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