Characterization of copper ion catalyst encapsulated in silica matrixes by sol-gel method and their photocatalytic activity for decomposition of nitric oxide into nitrogen and oxygen at 275 K

1993 ◽  
Vol 97 (20) ◽  
pp. 5211-5212 ◽  
Author(s):  
Nobuaki Negishi ◽  
Masaya Matsuoka ◽  
Hiromi Yamashita ◽  
Masakazu Anpo
Keyword(s):  
Nitric Oxide ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Copper Ion ◽  
Gel Method ◽  
Sol Gel Method

Green Synthesis of Cobalt Oxide Nanoparticles by a Starch-Assisted Method

2019 ◽  
Vol 9 (3) ◽  
pp. 362-370 ◽  
Author(s):  
D. Vaya ◽  
Meena ◽  
B.K. Das
Keyword(s):  
Photocatalytic Activity ◽  
Cobalt Oxide ◽  
Sol Gel ◽  
Complex Nature ◽  
Oxide Nanoparticles ◽  
Capping Agent ◽  
Chemical Route ◽  
Gel Method ◽  
Sol Gel Method ◽  
Cobalt Oxide Nanoparticles

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.

Characterization of CoCrFeO 4 Nanocrystals Prepared by a Sol-Gel Method

2001 ◽  
Vol 18 (5) ◽  
pp. 692-694 ◽  
Author(s):  
Xiong Gang ◽  
Mai Zhen-Hong ◽  
Wang Chao-Ying ◽  
Ni Yong-Ming ◽  
Zhao Zhong-Xian ◽  
...  
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method
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