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@ARTICLE{Patra:207253,
      author       = {Patra, Sabyasachi and Sen, Debasis and Pandey, Ashok K. and
                      Bahadur, J. and Mazumder, S. and Ramagiri, Shobha V. and
                      Bellare, Jayesh R. and Roth, S. V. and Santoro, G. and Yu,
                      S. and Goswami, A.},
      title        = {{T}ime {R}esolved {G}rowth of {M}embrane {S}tabilized
                      {S}ilver {NP}s and their {C}atalytic {A}ctivity},
      journal      = {RSC Advances},
      volume       = {4},
      number       = {103},
      issn         = {2046-2069},
      address      = {London},
      publisher    = {RSC Publishing},
      reportid     = {PUBDB-2015-01236},
      pages        = {59379 - 59386},
      year         = {2014},
      note         = {(c) The Royal Society of Chemistry. Post referee full text
                      in progress. Embargo for full text 1 year from 24th October
                      2014.},
      abstract     = {Formation of highly stable metal nanostructures in a
                      Nafion® membrane with various aspect ratios has been of
                      considerable research interest in recent years. However,
                      there is a need for a proper understanding of the growth
                      mechanism of such nanostructures in Nafion® (sometimes
                      larger than the size of water–sulfonate ionic clusters of
                      the membrane). In this work, the early growth kinetics of
                      silver nanoparticles (NPs) in Nafion®-117 ion-exchange
                      membrane during $\mathit{in situ}$ L-ascorbic acid reduction
                      of $Ag^{+}$ ions by time resolved $\mathit{in situ}$
                      small-angle X-ray scattering (SAXS) using synchrotron
                      radiation with a time resolution of 50 ms are revealed for
                      the first time. The SAXS analyses, corroborated by
                      transmission electron microscopy, showed that the sizes of
                      NPs increase rapidly together with their number density
                      until they attain a certain size that could be accommodated
                      in the ~5 nm water–sulfonate ionic clusters. Further
                      growth takes place either by self-agglomeration of the
                      particles ejected out from the water–sulfonic acid
                      clusters or by continuous reduction of metal ions on the
                      existing NP surfaces (uniformly or on a specific plane)
                      leading to formation of bigger nanostructures with various
                      aspect ratios. The time resolved information of NP growth
                      provides an opportunity for the controlled synthesis of
                      metal NPs with a definite size, shape and size distribution
                      for a specific application. The catalytic properties of Ag
                      NPs formed in the membrane were examined using borohydride
                      reduction of a model dye methylene blue. It was observed
                      that smaller Ag NPs with a mean diameter ~3 nm, confined in
                      the hydrophilic clusters of the Nafion® matrix, have
                      reasonably good catalytic activity and a lower lag time for
                      the onset of reduction.},
      cin          = {DOOR ; HAS-User / FS-PE},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-PE-20120731},
      pnm          = {PETRA Beamline P03 (POF2-54G14) / INDIA-DESY - INDIA-DESY
                      Collaboration $(2020_Join2-INDIA-DESY)$},
      pid          = {G:(DE-H253)POF2-P03-20130405 /
                      $G:(DE-HGF)2020_Join2-INDIA-DESY$},
      experiment   = {EXP:(DE-H253)P-P03-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000345652300059},
      doi          = {10.1039/C4RA10400E},
      url          = {https://bib-pubdb1.desy.de/record/207253},
}