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
2019 ◽  
Vol 9 (3) ◽  
pp. 362-370 ◽  
Author(s):  
D. Vaya ◽  
Meena ◽  
B.K. Das

Background: The properties of the material are altered when material size shifted towards nano-regime. This feature could be used for wastewater treatment process using model pollutant such as dyes. Recently, nanoparticles are synthesized by a green chemical route using different capping agents. This is the reason we adopt starch as green capping agent along with sol-gel method. Objective: To synthesize cobalt oxide nanoparticles by green chemical route and utilized it in degradation of dyes. Methods: Synthesis of cobalt oxide nanoparticles by sol-gel method using starch as a capping agent. The characteristics of surface modifications were investigated by UV-VIS, TEM, SEM, XRD and FTIR techniques. Results: Cobalt oxide nanoparticles synthesized and inhibited photocatalytic activity. Conclusion: Deactivation of photocatalytic activity due to complex nature of starch. This property can be used elsewhere as in light shielding applications to coat and protect surfaces in order to keep them cool and safe from damage as in the painting of vehicles, roofs, buildings, water tanks, etc.


2006 ◽  
Vol 17 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Hugo B. Suffredini ◽  
Giancarlo R. Salazar-Banda ◽  
Sônia T. Tanimoto ◽  
Marcelo L. Calegaro ◽  
Sergio A. S. Machado ◽  
...  

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Jegadeeswari A ◽  
Nivetha S

Magnesium oxide was hygroscopic solid mineral that occurs naturally as periclase.Magnesium oxide had high thermal conductivity; it gets heated when the electricity was passed through it. Magnesia crucible had a stability of 2400°C in air, 1700°C in reducing atmosphere. Magnesium oxide nanoparticles were obtained from the mixture of magnesium nitrate as precursor and sodium hydroxide as precipitating agent by sol-gel method. Finally,the resultant white crystalline powder of MgO was annealed at various temperatures of 80°C, 135°C and 180°C. The analytical studies (XRD, SEM FTIR, EDAX) reveals the morphological characterization of MgO nanoparticles. The Scanning Electron Microscopy (SEM) indicates the structures of MgO nanoparticles. The crystal size of MgO nanoparticles was obtained by X-Ray Diffraction (XRD). The optical properties of the sample were obtained by UV- Visible spectroscopy. Fourier Transform infrared spectroscopy indicates powdered composition of the sample. EDAX indicates elementary composition of the MgO nanoparticles.


2001 ◽  
Vol 92 (1-2) ◽  
pp. 244-249 ◽  
Author(s):  
Sang Ho Park ◽  
Ki Soo Park ◽  
Sung Sik Moon ◽  
Yang Kook Sun ◽  
Kee Suk Nahm

Sign in / Sign up

Export Citation Format

Share Document