TY - JOUR
T1 - Synthesis of cerium oxide nanoparticles using Gloriosa superba L. leaf extract and their structural, optical and antibacterial properties
AU - Arumugam, Ayyakannu
AU - Karthikeyan, Chandrasekaran
AU - Haja Hameed, Abdulrahman Syedahamed
AU - Gopinath, Kasi
AU - Gowri, Shanmugam
AU - Karthika, Viswanathan
N1 - Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - CeO2 nanoparticles (NPs) were green synthesized using Gloriosa superba L. leaf extract. The synthesized nanoparticles retained the cubic structure, which was confirmed by X-ray diffraction studies. The oxidation states of the elements (C (1s), O (1s) and Ce (3d)) were confirmed by XPS studies. TEM images showed that the NPs possessed spherical shape and particle size of 5 nm. The Ce-O stretching bands were observed at 451 cm- 1 and 457 cm- 1 from the FT-IR and Raman spectra respectively. The band gap of the CeO2 NPs was estimated as 3.78 eV from the UV-visible spectrum. From the photoluminescence measurements, the broad emission composed of eight different bands were found. The antibacterial studies performed against a set of bacterial strains showed that Gram positive (G +) bacteria were relatively more susceptible to the NPs than Gram negative (G -) bacteria. The toxicological behavior of CeO2 NPs was found due to the synthesized NPs with uneven ridges and oxygen defects in CeO2 NPs.
AB - CeO2 nanoparticles (NPs) were green synthesized using Gloriosa superba L. leaf extract. The synthesized nanoparticles retained the cubic structure, which was confirmed by X-ray diffraction studies. The oxidation states of the elements (C (1s), O (1s) and Ce (3d)) were confirmed by XPS studies. TEM images showed that the NPs possessed spherical shape and particle size of 5 nm. The Ce-O stretching bands were observed at 451 cm- 1 and 457 cm- 1 from the FT-IR and Raman spectra respectively. The band gap of the CeO2 NPs was estimated as 3.78 eV from the UV-visible spectrum. From the photoluminescence measurements, the broad emission composed of eight different bands were found. The antibacterial studies performed against a set of bacterial strains showed that Gram positive (G +) bacteria were relatively more susceptible to the NPs than Gram negative (G -) bacteria. The toxicological behavior of CeO2 NPs was found due to the synthesized NPs with uneven ridges and oxygen defects in CeO2 NPs.
KW - Antibacterial activity
KW - Cerium oxide nanoparticles
KW - Gloriosa superba
KW - Green synthesis
KW - Raman spectroscopy
KW - X-ray photoelectron spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84920998136&partnerID=8YFLogxK
U2 - 10.1016/j.msec.2015.01.042
DO - 10.1016/j.msec.2015.01.042
M3 - Article
C2 - 25686966
AN - SCOPUS:84920998136
SN - 0928-4931
VL - 49
SP - 408
EP - 415
JO - Materials Science and Engineering C
JF - Materials Science and Engineering C
ER -