Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/97088
Title: Highly anisotropic titanates from electrospun TiO2–SiO2 composite nanofibers and rice grain-shaped nanostructures
Authors: Sreekumaran Nair, A.
Zhu, Peining
Jagadeesh Babu, Veluru.
Yang, Shengyuan
Peng, Shengjie
Ramakrishna, Seeram
Issue Date: 2012
Source: Sreekumaran Nair, A., Zhu, P., Jagadeesh, B. V., Yang, S., Peng, S., & Ramakrishna, S. (2012). Highly anisotropic titanates from electrospun TiO2–SiO2 composite nanofibers and rice grain-shaped nanostructures. RSC Advances, 2(3), 992-998.
Series/Report no.: RSC advances
Abstract: We report a low temperature alkali-mediated conversion of nanofiber-and rice grain-shaped TiO2–SiO2 composites into highly anisotropic fiber (decorated with thorn-like features on surfaces)/sponge-shaped titanates of the formula Na2−xHxTi2O4(OH)2. The titanates were thoroughly characterized by spectroscopy and microscopy. Control experiments with the respective TiO2 analogues revealed that the unique open and highly porous morphologies were the result of structural rearrangement of TiO2 coupled with the in situ leaching of SiO2 from the composites by the alkali. Effect of concentration of the alkali and the reaction temperature on the morphology of the titanates was also probed. Evolution of the unique morphologies from the respective starting materials was studied by scanning electron microscopy analyses of the systematically withdrawn samples during the course of the reaction. The materials utilized in dye-sensitized solar cells showed excellent photovoltaic parameters amongst the category of titanates.
URI: https://hdl.handle.net/10356/97088
http://hdl.handle.net/10220/10400
ISSN: 2046-2069
DOI: http://dx.doi.org/10.1039/c1ra00466b
Rights: © 2012 The Royal Society of Chemistry.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

Google ScholarTM

Check

Altmetric

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.