Eco-friendly synthesis and characterization of cobalt oxide nanoparticles by sativum species and its photo-catalytic activity

2021 ◽  
Author(s):  
G. Asha ◽  
V. Rajeshwari ◽  
G. Stephen ◽  
S. Gurusamy ◽  
D. Carolin Jeniba Rachel
Keyword(s):  
Catalytic Activity ◽  
Cobalt Oxide ◽  
Synthesis And Characterization ◽  
Oxide Nanoparticles ◽  
Cobalt Oxide Nanoparticles ◽  
Photo Catalytic Activity

Synthesis and characterization of various phases of cobalt oxide nanoparticles using inorganic precursor

2011 ◽  
Vol 103 (1) ◽  
pp. 13-19 ◽  
Author(s):  
R. K. Gupta ◽  
A. K. Sinha ◽  
B. N. Raja Sekhar ◽  
A. K. Srivastava ◽  
G. Singh ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Synthesis And Characterization ◽  
Oxide Nanoparticles ◽  
Cobalt Oxide Nanoparticles ◽  
Inorganic Precursor

scholarly journals Synthesis and Characterization of Cobalt Oxide Nanoparticles

2018 ◽  
Vol 4 (5) ◽  
pp. 475-477 ◽  
Author(s):  
K. Prema Latha ◽  
C. Prema ◽  
S. Meenakshi Sundar
Keyword(s):  
Crystallite Size ◽  
Cobalt Oxide ◽  
Visible Region ◽  
Synthesis And Characterization ◽  
Oxide Nanoparticles ◽  
Face Centered Cubic ◽  
Cobalt Oxide Nanoparticles ◽  
Vis Spectroscopy ◽  
Ft Ir

The present work reports the synthesis and characterization of cobalt oxide nanoparticles. Microwave oven method was used for synthesizing cobalt oxide nanoparticles. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV-Vis spectroscopy, photoluminescence (PL) and scanning electron microscope (SEM). The prepared samples show poor crystalline nature so that the samples were calcined at 300 °C for 1 hr. The calcined samples were characterized for further changes in its morphology. XRD identifies the sample is in Co3O4 phase with face-centered cubic structure. Debye-Scherer formula was used to calculate the average crystallite size of the annealed sample and it was found to be 7 to 28 nm. In addition to crystallite size, specific surface area, dislocation density and microstrain are calculated using XRD. Williamson-Hall plot was used to calculate the size and strain. FT-IR spectrum shows two stretching bands at 660 and 550 cm−1 which confirm the functional group present in the cobalt oxide nanoparticles. In optical absorption studies, a blue shift in the energy band gap reveals the quantum confinement effect. Photoluminescence spectra shows emission peak in the visible region.

scholarly journals Synthesis and Characterization of Erbium Trioxide Nanoparticles as Photo-Catalytic for Degradation of Methyl Orange Dye

2019 ◽  
Author(s):  
Rifat Mohammed Dakhil ◽  
Tayser Sumer Gaaz ◽  
Ahmed Al-Amiery ◽  
Mohd S. Takriff ◽  
Abdul Amir H. Kadhum
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Synthesis And Characterization ◽  
Photo Degradation ◽  
Photo Catalytic Activity ◽  
Xrd Diffraction ◽  
Vis Spectroscopy ◽  
Methyl Orange Dye ◽  
Degradation Of Methyl Orange

Abstract. The present work focuses on the photo-catalytic degradation of methyl orange (MO) on Erbium trioxide nanoparticles Er2O3 NPs. In this study, Er2O3 nanoparticles were synthesized and fully characterized via various techniques including; XRD diffraction, UV-Vis spectroscopy and SEM techniques. The results revealed that, the photo-catalytic activity of the prepared Er2O3 NPs towards methyl orange (MB) photo-degradation was manifested. The optimum efficiency obtained was 16 %.

Sign in / Sign up

Export Citation Format

Share Document