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In-situ heating study on the structural change of surfactant-templated germanium oxide mesostructure
Chen X(陈兴); Cai Q(蔡泉); Wang W(王维); Mo G(默广); Jiang LS(江隆盛); Zhang KH(张坤浩); Chen ZJ(陈中军); Wu ZY(吴自玉); Wu ZH(吴忠华); Chen, X; Cai, Q; Wang, W; Mo, G; Jiang, LS; Zhang, KH; Chen, ZJ; Wu, ZY; Wu, ZH
Corresponding Author[Chen, Xing ; Cai, Quan ; Wang, Wei ; Mo, Guang ; Jiang, Longsheng ; Zhang, Kunhao ; Chen, Zhongjun ; Wu, Ziyu ; Wu, Zhonghua] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China ; [Chen, Xing] Gen Res Inst Nonforrous Met, Beijing 100088, Peoples R China ; [Cai, Quan ; Wang, Wei ; Mo, Guang ; Jiang, Longsheng ; Zhang, Kunhao] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
AbstractMesostructured germanium oxide has been well-synthesized by using a surfactant-templated approach under basic hydrothermal conditions. The cationic surfactant cetyltrimethylammonium bromide (CTAB) has formed nanotubes with uniform diameter of about 3.2 nm. Blanket-like morphology of the as-prepared sample has been observed with transmission electron microscopy (TEM). High-resolution TEM image reveals that the nanotubes are connected with inorganic germanium oxide and have self-assembled into periodic mesostructure. In-situ heating X-ray diffraction (XRD) patterns confirm that the germanium oxide is in amorphous phase in the temperature range from room temperature (RT) to 700 degrees C. In-situ heating small-angle X-ray scattering (SAXS) presents the mesostructural change with temperature. The local atomic structures around germanium atom have been obtained with in-situ heating X-ray adsorption fine structure (XAFS) techniques. The stability of this mesostructure has been determined to be correlated with the cationic surfactant CTAB. The structural evolution from the GeO2/NaOH aqueous solution, the as-prepared sample to the sample heated at 700 degrees C, has been described, and the formation mechanism of mesostructured germanium oxide has been discussed.
Subject AreaChemistry
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000259552000018
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Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Chen X,Cai Q,Wang W,et al. In-situ heating study on the structural change of surfactant-templated germanium oxide mesostructure[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2008,112(39):12297-12303.
APA 陈兴.,蔡泉.,王维.,默广.,江隆盛.,...&Wu, ZH.(2008).In-situ heating study on the structural change of surfactant-templated germanium oxide mesostructure.JOURNAL OF PHYSICAL CHEMISTRY B,112(39),12297-12303.
MLA 陈兴,et al."In-situ heating study on the structural change of surfactant-templated germanium oxide mesostructure".JOURNAL OF PHYSICAL CHEMISTRY B 112.39(2008):12297-12303.
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