Sol–gel process of ZnO and ZnAl2O4 coated aluminum borate whiskers

Effects of annealing temperature on some structural and optical properties of ZnO nanoparticles prepared by a modified sol–gel combustion method

“…Method Precursor material and solvents Morphology [10] Sol-gel Zinc nitrate, citric acid and distilled water Whisker [14] Solvothermal Zinc acetate, 1-butanol, 1-hexanol, 1-octanol and 1-decanol Nanorod [15] Hydrothermal Zinc acetate, cyclohexane, cetyltrimethyl ammonium bromide (CTAB), n-butylalcohol and distilled water Hollow nanospheres and hexagonal microtubes [25] Solochemical Zinc chloride, distilled water Amorphous [26] Dehydration Zinc acetate, alcohol Spherical Present work Sol-gel combustion Zinc acetate, citric acid and distilled water Hexagonal nanoplate absorption bands at 1750 cm À1 , 1350 cm À1 and 1250 cm À1 . These absorption bands were likely related to CO 2 absorbed from the atmosphere (air) and can therefore be neglected.…”

“…Recently, several new routes have been developed for the synthesis of ZnO nanostructures, such as the organometallic precursor method [8], a microemulsion process [9], sol-gel synthesis [10], physical vapor deposition [11,12], precipitation [13], solvothermal and hydrothermal methods [14,15], and solgel combustion [16]. In the sol-gel combustion method, the raw materials, which are usually a nitrate compound and a fuel, are dissolved in water.…”

Structural optical and magnetic properties of transition metal doped ZnO magnetic nanoparticles synthesized by sol-gel auto-combustion method

“…Transition metal doped ZnO is utilized for different applications. It has been reported that the properties of ZnO can be tuned by doping of transition metals [7][8][9][10][11][12]. Doping of different transition metals (e.g.…”

“…Cr, Mn, Ni, Co, Fe) in ZnO can improve its structural, optical, electrical and magnetic properties significantly [9][10][11][12]. Transition metal doped-ZnO nanostructures can be fabricated using different techniques, such as organometallic precursor method [7], microemulsion process [8], microwave hydrothermal process [9], sol-gel synthesis [10], precipitation method [11], physical vapor deposition [12], solvothermal synthesis [13], hydrothermal synthesis [13,14], chemical methods [15] and auto-combustion method [16]. Among all these methods, auto-combustion method yields homogeneous, good quality nanoparticles in a short period of time.…”

Effect of surface modified silicon carbide particles with Al2O3 and nanocrystalline spinel ZnAl2O4 on mechanical and damping properties of the composite

“…The desired interface, improved properties, reduced agglomeration of reinforcements and better functionality of the composite materials have been achieved previously by governing the surface morphology of reinforcements by adopting the diverse and complex technologies like chemical vapour deposition (CVD), physical vapour deposition (PVD), electroless coating, sol gel method and oxidation of reinforcements are some of the successfully adopted techniques [14][15][16][17]. So through oxidation treatment of SiC [16,18,19], Cu, Cu 2 O, Co and Cu coating [20][21][22], TiO 2 [23,24], C/Mo double layer [25], B 4 C and C [26], Ni [27], Si [28] and Al 2 O 3 coating [29].…”