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Direct processing o...
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Westin, GunnarUppsala universitet,Institutionen för materialkemi
(författare)
Direct processing of porous nano-structured ZnO-CoOx films
- Artikel/kapitelEngelska2007
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Elsevier BV,2007
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-27524
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-27524URI
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https://doi.org/10.1016/j.tsf.2007.03.145DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Highly porous nano-structured films and powders of ZnO:Co (0–5 metal% Co) or ZnO:Co and (Zn,Co)3O4 (10–35% Co) particles were obtained by deposition of mixed Zn- and Co-methoxy-ethoxide precursors on spinning or non-spinning substrates, and heating to 600 °C. The Co- and Zn-methoxy-ethoxide solutions were prepared by metathesis of CoCl2 and potassium methoxy-ethoxide, and reaction of diethylzinc and methoxy-ethanol, respectively. Compositions in the range 0–35% Co were investigated by IR spectroscopy, scanning electron microscopy, transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), and X-ray diffraction. The gels obtained consisted of hydrated amorphous oxo-carbonates and were of good elemental homogeneity in the TEM. Thermogravimetric analysis showed that all residual groups had been removed at 550–600 °C, 5 °C min− 1. The materials heated to 600 °C contained ZnO of the hexagonal modification with cell-edges in close agreement with un-doped ZnO regardless of composition and temperature. TEM-EDS studies showed that the ZnO:Co and (Zn,Co)3O4 spinel particles were well mixed, of similar shape and size, ca 10–25 nm. Heating of the 10% Co sample to 800 °C decomposed the spinel phase and left Co-doped ZnO.
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Pohl, AnnikaUppsala universitet,Institutionen för materialkemi(Swepub:uu)anpoh633
(författare)
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Ottosson, MikaelUppsala universitet,Institutionen för materialkemi(Swepub:uu)mikaotto
(författare)
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Jansson, Kjell
(författare)
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Uppsala universitetInstitutionen för materialkemi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Thin Solid Films: Elsevier BV515:20-21, s. 7751-77570040-60901879-2731
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