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Template-Free Synthesis and Mechanistic Study of Porous Three-Dimensional Hierarchical Uranium-Containing and Uranium Oxide Microspheres
Wang L(王琳); Zhao R(赵然); Wang CZ(王聪芝); Wang, L; Zhao, R; Wang, CZ; Yuan, LY; Gu, ZJ; Xiao, CL; Wang, SA; Wang, XW; Zhao, YL; Chai, ZF; Shi, WQ; Yuan LY(袁立永); Gu ZJ(谷战军); Xiao CL(肖成梁); Zhao YL(赵宇亮); Chai ZF(柴之芳); Shi WQ(石伟群)
2014
Source PublicationCHEMISTRY-A EUROPEAN JOURNAL
ISSN0947-6539
EISSN1521-3765
Volume20Issue:39Pages:12655-12662
AbstractA novel type of uranium-containing microspheres with an urchin-like hierarchical nano/microstructure has been successfully synthesized by a facile template-free hydrothermal method with uranyl nitrate hexahydrate, urea, and glycerol as the uranium source, precipitating agent, and shape-controlling agent, respectively. The as-synthesized microspheres were usually a few micrometers in size and porous inside, and their shells were composed of nanoscale rod-shaped crystals. The growth mechanism of the hydrothermal reaction was studied, revealing that temperature, ratios of reactants, solution pH, and reaction time were all critical for the growth. The mechanism study also revealed that an intermediate compound of 3UO(3)center dot NH3 center dot 5H(2)O was first formed and then gradually converted into the final hydrothermal product. These uranium-containing microspheres were excellent precursors to synthesize porous uranium oxide microspheres. With a suitable calcination temperature, very uniform microspheres of uranium oxides (UO2+x, U3O8, and UO3) were successfully synthesized.
Keywordactinides oxides phase transitions porous structures uranium
Subject AreaChemistry
DOI10.1002/chem.201403724
Indexed BySCI
Language英语
WOS IDWOS:000342626200040
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/224889
Collection院士
多学科研究中心
Recommended Citation
GB/T 7714
Wang L,Zhao R,Wang CZ,et al. Template-Free Synthesis and Mechanistic Study of Porous Three-Dimensional Hierarchical Uranium-Containing and Uranium Oxide Microspheres[J]. CHEMISTRY-A EUROPEAN JOURNAL,2014,20(39):12655-12662.
APA 王琳.,赵然.,王聪芝.,Wang, L.,Zhao, R.,...&石伟群.(2014).Template-Free Synthesis and Mechanistic Study of Porous Three-Dimensional Hierarchical Uranium-Containing and Uranium Oxide Microspheres.CHEMISTRY-A EUROPEAN JOURNAL,20(39),12655-12662.
MLA 王琳,et al."Template-Free Synthesis and Mechanistic Study of Porous Three-Dimensional Hierarchical Uranium-Containing and Uranium Oxide Microspheres".CHEMISTRY-A EUROPEAN JOURNAL 20.39(2014):12655-12662.
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