scholarly journals STRUCTURAL, OPTICAL, ANTIBACTERIAL PROPERTIES OF CERIUM OXIDE NANOPARTICLES PREPARED BY GREEN SYNTHESIS METHOD USING MEDICINAL PLANT SYZYGIUMCUMINI LEAF EXTRACT

2015 ◽  
Vol 49 ◽  
pp. 408-415 ◽  
Author(s):  
Ayyakannu Arumugam ◽  
Chandrasekaran Karthikeyan ◽  
Abdulrahman Syedahamed Haja Hameed ◽  
Kasi Gopinath ◽  
Shanmugam Gowri ◽  
...  

2017 ◽  
Vol 39 (22) ◽  
pp. 2926-2936 ◽  
Author(s):  
Carole Silveira ◽  
Quelen Letícia Shimabuku ◽  
Marcela Fernandes Silva ◽  
Rosângela Bergamasco

2017 ◽  
Vol 91 ◽  
pp. 98-107 ◽  
Author(s):  
Jitendra Kumar Sharma ◽  
Pratibha Srivastava ◽  
Sadia Ameen ◽  
M. Shaheer Akhtar ◽  
S.K. Sengupta ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2596
Author(s):  
Nicusor Fifere ◽  
Anton Airinei ◽  
Marius Dobromir ◽  
Liviu Sacarescu ◽  
Simona I. Dunca

Cerium oxide nanoparticles were prepared by a precipitation method using Ce(IV) sulphate as precursor dispersed in glycerol with varying synthesis parameters such as temperature or precipitating agent. The structural and morphological characteristics of the obtained nanoparticles were investigated by X-ray diffraction, transmission electron microscopy, and diffuse reflectance spectroscopy. The crystallite size of the nanoparticles varied between 13 and 17 nm. The presence of Ce3+ and Ce4+ was proved by XPS data in the CeO2 samples and the conservation of the fluorite structure was evinced by X-ray diffractograms with a contraction of the lattice parameter, regardless of the size of the nanoparticle. From diffuse reflectance spectra, two band gap energy values for the direct transition were observed. Depending on the synthesis condition, the red shift of gap energy and the blue shift of Urbach energy with increasing content of Ce3+ were ascertained. The antibacterial tests revealed that the cerium oxide nanoparticles show good antimicrobial activity towards the common pathogens Escherichia coli and Staphylococcus aureus.


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