TY - JOUR

T1 - Nanostructured actinide compounds

AU - Krivovichev, Sergey V.

AU - Burns, Peter C.

AU - Tananaev, Ivan G.

AU - Myasoedov, Boris F.

PY - 2007/11/1

Y1 - 2007/11/1

N2 - A brief overview of nanostructured inorganic actinide compounds, i.e., compounds with nanoscale clusters and structural units, is given. Only structures that are accessible via X-ray diffraction analysis are considered (i.e., highly ordered assemblies of molecular units with at least one dimension of more than 1 nm). Zero-dimensional (0D) actinide based nanostructures are represented by a new family of self-assembling actinide nanospheres recently reported by Burns et al. [P.C. Burns, K.-A. Hughes Kubatko, G. Sigmon, B.J. Fryer, J.E. Gagnon, M.R. Antonio, L. Soderholm, Angew. Chem. Int. Ed. 44 (2005) 2135]. The nanospheres are comprised of linear actinyl-peroxide building blocks, and their persistence as stable entities in alkaline solutions has been confirmed. Krivovichev et al. [S.V. Krivovichev, V. Kahlenberg, R. Kaindl, E. Mersdorf, I.G. Tananaev, B.F. Myasoedov, Angew. Chem. Int. Ed. 44 (2005) 1134; J. Am. Chem. Soc. 127 (2005) 1072] have recently reported synthesis and structures of two uranium(VI) compounds, K5[(UO2)3(SeO4)5](NO3)(H2O)3.5 (1) and (C4H12N)14 [(UO2)10(SeO4)17(H2O)] (2), containing nanometer-sized tubules formed by corner sharing of U6+O7 pentagonal bipyramids and SeO4 tetrahedra. Actinide peroxide nanospheres and uranyl selenate nanotubules represent the first examples of nanoscale structures in inorganic actinide compounds. These findings demonstrate the possibility of nanoscale fabrication for actinides in higher oxidation states, and a whole new range of uranium-based nanotubular and nanocomposite materials can be expected.

AB - A brief overview of nanostructured inorganic actinide compounds, i.e., compounds with nanoscale clusters and structural units, is given. Only structures that are accessible via X-ray diffraction analysis are considered (i.e., highly ordered assemblies of molecular units with at least one dimension of more than 1 nm). Zero-dimensional (0D) actinide based nanostructures are represented by a new family of self-assembling actinide nanospheres recently reported by Burns et al. [P.C. Burns, K.-A. Hughes Kubatko, G. Sigmon, B.J. Fryer, J.E. Gagnon, M.R. Antonio, L. Soderholm, Angew. Chem. Int. Ed. 44 (2005) 2135]. The nanospheres are comprised of linear actinyl-peroxide building blocks, and their persistence as stable entities in alkaline solutions has been confirmed. Krivovichev et al. [S.V. Krivovichev, V. Kahlenberg, R. Kaindl, E. Mersdorf, I.G. Tananaev, B.F. Myasoedov, Angew. Chem. Int. Ed. 44 (2005) 1134; J. Am. Chem. Soc. 127 (2005) 1072] have recently reported synthesis and structures of two uranium(VI) compounds, K5[(UO2)3(SeO4)5](NO3)(H2O)3.5 (1) and (C4H12N)14 [(UO2)10(SeO4)17(H2O)] (2), containing nanometer-sized tubules formed by corner sharing of U6+O7 pentagonal bipyramids and SeO4 tetrahedra. Actinide peroxide nanospheres and uranyl selenate nanotubules represent the first examples of nanoscale structures in inorganic actinide compounds. These findings demonstrate the possibility of nanoscale fabrication for actinides in higher oxidation states, and a whole new range of uranium-based nanotubular and nanocomposite materials can be expected.

KW - Nanospheres

KW - Nanostructures

KW - Nanotubules

KW - Neptunium

KW - Uranium

UR - http://www.scopus.com/inward/record.url?scp=34548120141&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2006.10.077

DO - 10.1016/j.jallcom.2006.10.077

M3 - Article

AN - SCOPUS:34548120141

VL - 444-445

SP - 457

EP - 463

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - SPEC. ISS.

ER -