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Title: Uranium Oxide Nanocrystals by Microwave-Assisted Thermal Decomposition: Electronic and Structural Properties

Journal Article · · Zeitschrift fuer Anorganische und Allgemeine Chemie
 [1];  [2];  [2];  [3];  [1]
  1. Univ. of Cologne (Germany). Inst. of Inorganic Chemistry
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). The Glenn T. Seaborg Center. Chemical Sciences Division
  3. Tamkang Univ., Taipei (Taiwan). Dept. of Physics
+ Show Author Affiliations

Uranium oxides have attracted much attention not only in the context of nuclear energy generation but also for their application as pristine catalysts or as supports for other (transition metal) oxides and (precious) metals. Their propensity to adopt high coordination numbers and manifest multiple oxidation states (from +II to +VI) makes them attractive candidates for catalyzed transformation reactions. In this paper, we report a new synthesis route to phase-pure, crystalline UO2 nanoparticles via microwave-assisted decomposition of a molecular uranium(IV) precursor. Finally, the electronic structure and optical absorption properties of these nanocrystals were investigated using spectroscopic methods to evaluate their suitability for photo(electro)catalytic applications.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG); Fonds der Chemischen Industrie (Germany); USDOE
Grant/Contract Number:
AC02-05CH11231; SPP 1613
OSTI ID:
1432247
Alternate ID(s):
OSTI ID: 1410832
Journal Information:
Zeitschrift fuer Anorganische und Allgemeine Chemie, Vol. 644, Issue 1; Related Information: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim; ISSN 0044-2313
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (8)

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Scheme 1(p. 4)figure Scheme 1
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
in-situ x-ray absorption spectroscopy
scanning transmission x-ray microscopy (STXM)
photocatalysis
uranium
UO2 nanoparticles
microwave chemistry