Facile synthesis and characterization of novel mesoporous and mesorelief oxides with gyroidal structures. Tian, B., Liu, X., Solovyov, L., Liu, Z, Yang, H., Zhang, Z., Xie, S., Zhang, F., Tu, B, Yu, C., Terasaki, O, & Zhao, D. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 126(3):865-875, JAN 28, 2004.
doi  abstract   bibtex   
In this paper, we bring forward an effective strategy, solvothermal postsynthesis, to prepare ordered mesoporous silica materials with highly branched channels. Structural characterizations indicate that the titled mesoporous materials basically have the cubic double gyroidal (space group la-3d) structure with small fraction of distortions. The mesopore sizes and surface areas can be up to 8.8 nm and 540 m(2)/g, respectively, when microwave digestion is employed to remove the organic templates. A phase transition model is proposed, and possible explanations for the successful phase transition are elucidated. The results show that the flexible inorganic framework, high content of organic matrix, and nonpenetration of poly(ethylene oxide) segments may facilitate the structural evolution. This new synthetic strategy can also be extended to the preparation of other double gyroidal silica-based mesoporous materials, such as metal and nonmetal ions doped silica and organo-functionalized silica materials. The prepared 3D mesoporous silica can be further utilized to fabricate various ordered crystalline gyroidal metal oxide ``negatives''. The mesorelief ``negatives'' (Co3O4 and In2O3 are detailed here) prepared by impregnation and thermolysis procedures exhibit undisplaced, displaced, and uncoupled enantiomeric gyroidal subframeworks. It has been found that the amount of metal oxide precursors (hydrated metal nitrates) greatly influence the (sub)framework structure and single crystallinity of the mesorelief metal oxide particles. The single crystalline gyroidal metal oxides are ordered both at mesoscale and atomic scale. However, these orders are not commensurate with each other.
@article{ ISI:000188318300037,
Author = {Tian, BZ and Liu, XY and Solovyov, LA and Liu, Z and Yang, HF and Zhang,
   ZD and Xie, SH and Zhang, FQ and Tu, B and Yu, CZ and Terasaki, O and
   Zhao, DY},
Title = {{Facile synthesis and characterization of novel mesoporous and mesorelief
   oxides with gyroidal structures}},
Journal = {{JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}},
Year = {{2004}},
Volume = {{126}},
Number = {{3}},
Pages = {{865-875}},
Month = {{JAN 28}},
Abstract = {{In this paper, we bring forward an effective strategy, solvothermal
   postsynthesis, to prepare ordered mesoporous silica materials with
   highly branched channels. Structural characterizations indicate that the
   titled mesoporous materials basically have the cubic double gyroidal
   (space group la-3d) structure with small fraction of distortions. The
   mesopore sizes and surface areas can be up to 8.8 nm and 540 m(2)/g,
   respectively, when microwave digestion is employed to remove the organic
   templates. A phase transition model is proposed, and possible
   explanations for the successful phase transition are elucidated. The
   results show that the flexible inorganic framework, high content of
   organic matrix, and nonpenetration of poly(ethylene oxide) segments may
   facilitate the structural evolution. This new synthetic strategy can
   also be extended to the preparation of other double gyroidal
   silica-based mesoporous materials, such as metal and nonmetal ions doped
   silica and organo-functionalized silica materials. The prepared 3D
   mesoporous silica can be further utilized to fabricate various ordered
   crystalline gyroidal metal oxide ``negatives{''}. The mesorelief
   ``negatives{''} (Co3O4 and In2O3 are detailed here) prepared by
   impregnation and thermolysis procedures exhibit undisplaced, displaced,
   and uncoupled enantiomeric gyroidal subframeworks. It has been found
   that the amount of metal oxide precursors (hydrated metal nitrates)
   greatly influence the (sub)framework structure and single crystallinity
   of the mesorelief metal oxide particles. The single crystalline gyroidal
   metal oxides are ordered both at mesoscale and atomic scale. However,
   these orders are not commensurate with each other.}},
DOI = {{10.1021/ja037877t}},
ISSN = {{0002-7863}},
EISSN = {{1520-5126}},
ResearcherID-Numbers = {{, 赵东元/E-5796-2010
   Solovyov, Leonid A/B-7246-2008
   Yu, Chengzhong/I-8663-2012
   Liu, Zheng/E-6119-2018
   Terasaki, Osamu/Y-1137-2018}},
ORCID-Numbers = {{, 赵东元/0000-0002-1642-2510
   Solovyov, Leonid A/0000-0002-3905-3252
   Yu, Chengzhong/0000-0003-3707-0785
   Liu, Zheng/0000-0001-9095-7647
   Terasaki, Osamu/0000-0001-5803-0817}},
Unique-ID = {{ISI:000188318300037}},
}

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