Abstract
In this research copper oxide (CuO) nanoparticles were prepared by sol gel method. In this method CuCl<sub>2</sub>.2H<sub>2</sub>O was used as precursor, the obtained CuO nanoparticles were further supported by alumina to produce copper oxide support on alumina catalyst, the copper oxide nanoparticle and the catalyst were characterized using different analytical techniques such as titrimetric method, x-ray diffraction (XRD), Scanning Electron Microscope (SEM) and the catalyst was applied in the synthesis of tetraethyl orthosilicate (TEOS). The obtained results indicated the formation of copper oxide nanoparticles and copper oxide supported in alumina catalyst in high quality, also the catalyst increased the rate of formation of tetraethyl orthosilicate (TEOS).
Highlights
The oxides of transition metals are an important class of semiconductors, which have applications in magnetic storage media, solar energy transformation, electronics and catalysis [1] Among the oxides of transition metals, copper oxide nanoparticles are of special interest, it is a semiconductor material and has a natural abundance of starting material, It has wide applications, such as in solar cell technology, field emission, magnetic storage media, lithium ion batteries, gas sensing, and drug delivery, magnetic resonance imaging, and field emission devices
1g of ultra-pure silicon dioxide was weighted, tiny amount of copper oxide supported on alumina catalyst was added, 20 ml of diethyl ether and 25 ml of hydrochloric acid were added, and the solution was left until the precipitation was completed, the precipitate was filtered and weighted, and the percentage yield of the obtained product was calculated using the following equation: Yield%=(Wprac/Wtheo) ×100
In the present work the synthesis of CuO was done by sol-gel route because this method is easy and economical
Summary
The oxides of transition metals are an important class of semiconductors, which have applications in magnetic storage media, solar energy transformation, electronics and catalysis [1] Among the oxides of transition metals, copper oxide nanoparticles are of special interest, it is a semiconductor material and has a natural abundance of starting material, It has wide applications, such as in solar cell technology, field emission, magnetic storage media, lithium ion batteries, gas sensing, and drug delivery, magnetic resonance imaging, and field emission devices. Varieties of physical and chemical methods have been proposed to synthesize CuO nanoparticles (CuO-NPs) [2]. CuO-NPs belong to monoclinic structure system with the brownish-black appearance [3]. They find their significant role in antibacterial agents to fabrics [4]. The activity of nano materials as a catalyst depends mostly on the nano powder material size, morphology and specific surface area of the prepared materials. Due to the potentiality of CuO, it acts as a catalyst; whereas all metal oxides are not useful for the catalytic activity. As like Fenton’s reagent CuO combined with another metal oxide like CeO2. We have synthesized CuO nanoparticles by simple aqueous precipitation method with size 9-10 nm. The synthesized nanoparticles were characterized by XRD and SEM spectrometer
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