Please use this identifier to cite or link to this item: https://doi.org/10.1039/c2ra20608k
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dc.titleSuperior photocatalytic behaviour of novel 1D nanobraid and nanoporous α-Fe2O3 structures
dc.contributor.authorSundaramurthy, J.
dc.contributor.authorKumar, P.S.
dc.contributor.authorKalaivani, M.
dc.contributor.authorThavasi, V.
dc.contributor.authorMhaisalkar, S.G.
dc.contributor.authorRamakrishna, S.
dc.date.accessioned2014-10-07T09:11:09Z
dc.date.available2014-10-07T09:11:09Z
dc.date.issued2012
dc.identifier.citationSundaramurthy, J., Kumar, P.S., Kalaivani, M., Thavasi, V., Mhaisalkar, S.G., Ramakrishna, S. (2012). Superior photocatalytic behaviour of novel 1D nanobraid and nanoporous α-Fe2O3 structures. RSC Advances 2 (21) : 8201-8208. ScholarBank@NUS Repository. https://doi.org/10.1039/c2ra20608k
dc.identifier.issn20462069
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/85703
dc.description.abstractWe have produced novel nanostructures of pure and ceramic α-Fe 2O3 using electrospinning, followed by annealing at 500 °C for 5 h with ramp rate of 5 °C min-1. Electron microscopy clearly reveals the novel morphologies, namely nanobraids and nanoporous α-Fe2O3, suggesting that the precursor, (iron(iii) acetylacetonate, (Fe(acac)3)) to polyvinylpyrrolidone (PVP) ratio greatly influences structural transformations of Fe2O3. 4 wt% of Fe(acac)3/PVP solution used for electrospinning at 15 kV a potential produced nanobraid-like ceramic α-Fe2O3, indicating that binodal phase separation is predominant at this ratio. On the other hand, the electrospinning of 6 wt% of Fe(acac)3/PVP solution induces spinodal phase separation that results in the formation of nanoporous ceramic α-Fe2O3 fibers. The nanobraids and nanoporous ceramic α-Fe2O3 exhibit superior photocatalytic performances of up to 91.2% and 90.2% for the organic dye, Congo red (CR) in the shorter time of 140 min under photoirradiation. It is concluded that the presence of the porous surface and smaller crystallite size in the α-Fe2O3 nanostructures act as active catalytic centers and play a key role in allowing effective interaction between organic dye and α-Fe2O3, in turn enhance photocatalytic degradation performance.© 2012 The Royal Society of Chemistry.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1039/c2ra20608k
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.description.doi10.1039/c2ra20608k
dc.description.sourcetitleRSC Advances
dc.description.volume2
dc.description.issue21
dc.description.page8201-8208
dc.identifier.isiut000307792200039
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