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题名: Synthesis of ordered mesoporous uranium dioxide by a nanocasting route
作者: Zhao R(赵然); Wang L(王琳); Chai ZF(柴之芳); Shi WQ(石伟群); Zhao, R; Wang, L; Chai, ZF; Shi, WQ
刊名: RADIOCHIMICA ACTA
出版日期: 2016
卷号: 104, 期号:8, 页码:549
关键词: Porous materials ; phase transformation ; uranium dioxide ; nanocasting
DOI: 10.1515/ract-2015-2563
通讯作者: 石伟群
文章类型: Article
英文摘要: Ordered mesoporous UO2 with 3-D structure (for UO2-KIT-6) and nanowire bundles (for UO2-SBA-15) was synthesized for the first time by a nanocasting route using different ordered mesoporous silica (KIT-6 and SBA-15, respectively) as templates and uranyl nitrate hexahydrate as the metal precursor. The uranyl nitrate was impregnated into the mesopore of the silica template and was converted to U3O8 after the first step. The synthesis of ordered UO2 mesostructure was achieved by reducing the mesoporous U3O8 with silica composites under 5% H-2/Ar atmosphere at 700 degrees C, followed by a template removal process. The as-prepared UO2-KIT-6 had a particle size of several millimeters, and was constructed with uncoupled subframework mesostructure and crystalline walls, while UO2-SBA-15 possessed a rope-like morphology and consisted of nanowire arrays. The surface area and pore volume of ordered UO2 mesostructure are 47.2m(2) g(-1) and 0.23 cm(3) g(-1) for the UO2-KIT-6, and 54.4m(2) g(-1) and 0.28 cm(3) g(-1) for the UO2-SBA-15, respectively.
关键词[WOS]: CRYSTALLINE WALLS ; OXIDE ; NANOPARTICLES ; NANOCRYSTALS ; PERFORMANCE ; IN2O3
语种: 英语
WOS记录号: WOS:000381017600004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihep.ac.cn/handle/311005/261103
Appears in Collections:院士_期刊论文

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作者单位: 中国科学院高能物理研究所

Recommended Citation:
Zhao R,Wang L,Chai ZF,et al. Synthesis of ordered mesoporous uranium dioxide by a nanocasting route[J]. RADIOCHIMICA ACTA,2016,104(8):549.
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