Precipitation method and characterization of cobalt oxide nanoparticles

2017 ◽  
Vol 123 (4) ◽  
Author(s):  
D. Durai Manoharadoss Prabaharan ◽  
K. Sadaiyandi ◽  
M. Mahendran ◽  
Suresh Sagadevan
Keyword(s):  
Cobalt Oxide ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Cobalt Oxide Nanoparticles

Synthesis and characterization of nano sized cobalt oxide by precipitation method

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Pavithra D ◽  
Sujatha K ◽  
Sudha A P
Keyword(s):  
Cobalt Oxide ◽  
Ammonium Oxalate ◽  
Cobalt Nitrate ◽  
Morphological Properties ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Average Crystalline Size ◽  
Co3o4 Nanoparticles ◽  
X Ray ◽  
Cobalt Oxide Nanoparticles

In the present work, cobalt oxide nanoparticles were prepared by using precipitation method. The cobalt nitrate [Co (No3)2] and ammonium oxalate [C2H8N2O4] were used as precursors for the synthesis of cobalt oxide nanoparticles and the resultant product was Calcinated at 400˚C for 2 hrs. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDAX) to analyze the structural and morphological properties. The XRD pattern of the synthesized cobalt oxide nanoparticles exhibits cubic structure with the average crystalline size of 8.06 nm. The functional groups of the synthesized nanoparticles were confirmed by using FTIR spectrum (400 to 4000 cm-1). In the synthesized sample and its purity were confirmed from EDAX spectrum. The surface morphology of the synthesized Co3O4 nanoparticles shows spherical morphology. The optical properties of the synthesized cobalt oxide nanoparticles were investigated by photoluminescence spectrum which shows a minor emission at around 440 nm.

Preparation and electrochemical characterization of lithium cobalt oxide nanoparticles by modified sol–gel method

2008 ◽  
Vol 43 (8-9) ◽  
pp. 2497-2503 ◽  
Author(s):  
Ramdas B. Khomane ◽  
Amit C. Agrawal ◽  
B.D. Kulkarni ◽  
S. Gopukumar ◽  
A. Sivashanmugam
Keyword(s):  
Cobalt Oxide ◽  
Sol Gel ◽  
Electrochemical Characterization ◽  
Oxide Nanoparticles ◽  
Lithium Cobalt Oxide ◽  
Gel Method ◽  
Sol Gel Method ◽  
Cobalt Oxide Nanoparticles ◽  
Lithium Cobalt

Synthesis and characterization of cobalt oxide nanoparticles by thermal treatment process

2009 ◽  
Vol 362 (14) ◽  
pp. 4937-4942 ◽  
Author(s):  
Masoud Salavati-Niasari ◽  
Afsaneh Khansari ◽  
Fatemeh Davar
Keyword(s):  
Thermal Treatment ◽  
Cobalt Oxide ◽  
Treatment Process ◽  
Synthesis And Characterization ◽  
Oxide Nanoparticles ◽  
Cobalt Oxide Nanoparticles

scholarly journals Oxidative Treatment of Rhodamine B Solution on CoOx/sepiolite Catalysts

2020 ◽  
pp. 37-46
Author(s):  
Thao Nguyen Tien ◽  
Dang Van Long ◽  
Nguyen Bich Ngoc ◽  
Nguyen Thi Nhu
Keyword(s):  
Hydrogen Peroxide ◽  
Cobalt Oxide ◽  
Rhodamine B ◽  
Room Temperature ◽  
Specific Area ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Physical Methods ◽  
Cobalt Oxide Nanoparticles ◽  
Oxidative Treatment

Sepiolite loaded with different cobalt oxide contents has been prepared by the precipitation method followed by calcination at 410ºC. The synthesized Co-loaded samples were characterized by physical methods using XRD, SEM, BET, and H2-TPR. The obtained solids have a large specific area and good distribution of cobalt oxide nanoparticles on sepiolite carrier. The catalysts were tested for the oxidative removal of rhodamine B solution and found that 1.0 – 3.0 wt.% cobalt ion/sepiolite samples exhibited the highest decoloration efficiency of rhodamine B (88-90%) in the presence of hydrogen peroxide at room temperature after the treatment of 30 mg/L of RhB solution in 210 minutes.

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
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