The cover describes the development of nanofibers with encapsulated growth factors has been emerged as a promising approach in neo-tissues applications. The proposed nanofibrous systems provide a novel approach to both simulate the extra-cellular matrix for cell adhesion and also for localized delivery of signaling molecules and growth factors. Growth factors could be loaded into nanofibers using different techniques including physical adsorption, covalent bonding or encapsulation.
Effect of reaction time on LiMn2O4 nanostructures prepared by modified chemical bath deposition method
Lehlohonolo F. Koao1*, Setumo V. Motloung2, Tshwafo E. Motaung3
1Department of Physics, University of the Free State (Qwa Qwa campus), Private Bag X13, Phuthaditjhaba, 9866, South Africa
2Department of Physics, Nelson Mandela Metropolitan University (NMMU), P. O. Box 77000, Port Elizabeth 6031, South Africa
3Department of Chemistry, University of Zululand, Private Bag X1001, KwaDlangezwa 3886, South Africa
Adv. Mater. Lett., 2018, 9 (10), pp 703-707
DOI: 10.5185/amlett.2018.2137
Publication Date (Web): Jul 18, 2018
Copyright © 2019 VBRI Press
E-mail: koaolf@ufs.ac.za
LiMn2O4 (LMO) powders were prepared by modified chemical bath deposition method. The effect of reaction time on the structure, morphology and optical properties of LMO nanostructures were investigated. The reaction time was varied from 1 - 120 min. The X-ray diffraction (XRD) patterns of the powders correspond to the various planes of a cubic spinel LMO phase. It was observed that the secondary phases decreases with an increase in reaction time. The diffraction peaks increase in intensity with an increase in reaction time up to 10 min. The estimated average grain sizes calculated using the XRD spectra were found to be in the order of 60 ± 1 nm. The scanning electron microscope (SEM) image suggested that the reaction time influences the morphology of the prepared powders. The irregular nanoparticle increased in size with an increase in reaction time. The UV-Vis spectra showed a red shift with an increase in reaction time up to 10 min.
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