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SUMMARY:Structural investigations of Ni deposited on porous anodic alumina
  matrices
DTSTART;VALUE=DATE-TIME:20160705T090000Z
DTEND;VALUE=DATE-TIME:20160705T100000Z
DTSTAMP;VALUE=DATE-TIME:20260712T184357Z
UID:indico-contribution-1272@indico.inp.nsk.su
DESCRIPTION:Speakers: Andrey Chukavin (Physical-Technical Institute of UB 
 RAS)\, Vladimir Kriventsov (Boreskov Institute of Catalysis)\nR.G. Valeev1
 \, V.V. Stashkova2\, A.I. Chukavin1\, V.V. Kriventsov3\, N.A. Mezentsev4\n
 \n1) Physical-Technical Institute of UB RAS\, Izhevsk\, Russia\n2) Udmurti
 a State University\, Izhevsk\, Russia\n3) Boreskov’s Institute of Cataly
 sis of SB RAS\, Novosibirsk\, Russia\n4) Budker Institute of Nuclear Physi
 cs of  SB RAS\, Novosibirsk\, Russia\n\nIron\, nickel\, cobalt\, platinum 
 and other 3d  and platinum group metals\, their alloys and intermetallic c
 ompounds are traditionally used as cathodes in electrolytic hydrogen evolu
 tion reaction (HER) in aqueous acid and alkaline solutions [1]. Nickel sta
 nds out among them because of the fact that\, having high corrosion resist
 ance in acidic and alkaline media compared with platinum group metals\, it
  has a low cost and so is widely used [2\,3]. It should be noted that the 
 efficiency of HER depends on the area of contact of the cathode material w
 ith the electrolyte\, so there is an increased interest in literature to t
 he nickel based materials having a developed surface due to the formation 
 of metal nanoparticles with different morphology [4]. This is due to the l
 arge contribution of surface electronic states of the metal in HER. It is 
 also strongly affected by the structural-phase state and local atomic and 
 electronic structure causing nickel chemical activity.\nThe aim of this wo
 rk is to develop methods of magnetron sputtering nickel on high surface ar
 ea membranes of a porous anodic alumina morphology and to study the struct
 ural-phase state\, local atomic and electronic structures of the samples\,
  depending on the parameters of the Al2O3 porous structure (the pore diame
 ter\, the distance between the individual pores). \nAs a result of a compl
 ex study (XAFS\, XRD\, SEM)\, the state and local structure of samples obt
 ained by few ways were revealed. The geometrical characteristics of Ni nan
 ostructures\, their crystalline and local atomic structure were studied. T
 he local atomic structure parameters were compared to those revelaed in in
 vestigations of the nickel film obtained on smooth Al2O3 surface. All poss
 ible structural models were discussed in detail. \nThis work is supported 
 by program “Umnik” (Grant № 0020390)\, SB RAS comprehensive program 
 II.2P (Project 0305-2015-0018).\n\n1. L.A. Kibler\, ChemPhysChem 7\, 985 (
 2006).\n2. W.A. Badawy\, H. Nady\, et al.\, Int. J. Hydr. Energy 39\, 1082
 4 (2014)\n3. J. Panek\, A. Budniok\, Surf. Interface Anal. 40\, 237 (2008)
 .\n4. D.A. Dalla Corte\, C. Torres\, et al.\, Int. J. Hydr. Energy 37\, 30
 25 (2012).\n\nhttps://indico.inp.nsk.su/event/3/contributions/1272/
LOCATION:Budker INP 2nd and 3rd floors
URL:https://indico.inp.nsk.su/event/3/contributions/1272/
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