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Zinc oxide is an inorganic compound with the formula Zn O.It is a white powder which is insoluble in water. ZnO is used as an additive in numerous materials and products including cosmetics, food supplements, rubbers, plastics, ceramics, glass, cement, lubricants, [12] paints, sunscreens, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants, semi conductors ...
Defects and dopants are used in most ZnO nanostructure applications. Indeed, the defects in ZnO enable a variety of semiconductor properties with different band gaps. By combining ZnO with dopants, a variety of electrical and material characteristics can be achieved. For example, optical properties of ZnO can change through defects and dopants ...
Zinc oxide, ZnO, is the most important manufactured compound of zinc, with a wide variety of uses. [2] It crystallizes with the Wurtzite structure. It is amphoteric, dissolving in acids to give the aqueous Zn 2+ ion and in alkali to give the zincate (a.k.a. tetrahydroxozincate) ion, [Zn(OH) 4] 2−. Zinc hydroxide, Zn(OH) 2 is also amphoteric.
The oxide ZnO is a white powder that is nearly insoluble in neutral aqueous solutions, but is amphoteric, dissolving in both strong basic and acidic solutions. [51] The other chalcogenides (ZnS, ZnSe, and ZnTe) have varied applications in electronics and optics. [63] Pnictogenides (Zn 3 N 2, Zn 3 P 2, Zn 3 As 2 and Zn 3 Sb 2), [64] [65] the ...
Flexible gas sensor based on ZnO nanorods and its internal structure. ITO stands for indium tin oxide and PET for polyethylene terephthalate. [1]A zinc oxide nanorod sensor or ZnO nanorod sensor is an electronic or optical device detecting presence of certain gas or liquid molecules (e.g. humidity, [2] NO, hydrogen, [3] [4] etc.) in the ambient atmosphere.
The compound crystallizes in a tetragonal body-centered unit cell of space group symmetry I4 1 md. In the solid-state diethylzinc shows nearly linear Zn centres. The Zn-C bonds measure 194.8(5) pm, while the C-Zn-C angle is slightly bent with 176.2(4)°. [6]
Zn + 2 H 2 O + 2 NaOH → Na 2 Zn(OH) 4 + H 2. From such solutions, one can crystallize salts of containing the anions Zn(OH) 4 2−, Zn 2 (OH) 6 2−, and Zn(OH) 6 4−. Na 2 Zn(OH) 4 consists of tetrahedral zincate ion and octahedral sodium cations. [3] The salt Sr 2 Zn(OH) 6 features zinc in an octahedral coordination sphere.
Further dehydration at 165−210 °C produces a mixture of ZnO and an intermediate Zn(OH)Cl. At 210−300 °C, the intermediate Zn(OH)Cl decomposes to ZnO and ZnCl 2. At higher temperature, volatilization of zinc chloride occurs, leaving a final residue of zinc oxide.