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Abstract

Two simple innovative green methods have been developed to synthesize precise phase of cobalt oxide nanostructures Co3O4; the first method included using cobalt hydroxide carbonate (extra pure) Co2CO3(OH)2 with aqueous plants extract of syzygium aromaticum (clove) bud extract (SABE) once; then again with pomegranate peel extract (PPE) both samples were submitted to microwave irradiation for 5 minutes followed by discrete calcination at 500 oC and then 850 oC an interested shapes of doted semi-cubic of Co3O4-NPs was successfully obtained in both cases; the samples donated as (B1) and (B2) with average particles size calculated via Debye-.Scherrer formula found to be of 20.93 nm and 17.25 nm respectively. The second method included using the same process however; the procedure was conducted in a basic medium to synthesize the controlled phase of Co3O4 nanostructure by adding potassium hydroxide to cobalt hydroxide carbonate (extra pure) Co2CO3(OH)2 and aqueous plants extract of syzygium aromaticum (clove) bud extract (SABE) and again with pomegranate peel extract (PPE) mixture. Crystal shapes of semi-doted cubic of Co3O4-NPs were also achieved in this process the samples donated as (B3) and (B4) with average size calculated via Debye-.Scherrer formula was found to be of smaller size12.66 nm and 5.64 nm respectively; The synthesized cobalt-oxide NPs were characterized using X-ray powder diffraction (XRD), filed emission scanning electron microscopy (FESEM),energy-dispersiveX-ray spectroscopy (EDS), atomic force microscopy (AFM), and fourier transform infrared spectroscopy (FT-IR) techniques were used to confirm the design of cobalt based nanostructures and reveal their characteristic features, their different sizes and morphologies.

Keywords

Green Chemistry, Microwave method, Plant extracts, Pomegranate peel extract (PPE), Syzygium aromaticum (Clove) bud extract (SABE)

Subject Area

Physics

Article Type

Article

First Page

2658

Last Page

2674

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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