Phase transformation of molybdenum trioxide to molybdenum dioxide: An in‐situ transmission electron microscopy investigation | Zendy

Chen Jian | Zendy; Wei Qiang | Zendy

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Phase transformation of molybdenum trioxide to molybdenum dioxide: An in‐situ transmission electron microscopy investigation

Author(s) -

Chen Jian,

Wei Qiang

Publication year - 2017

Publication title -

international journal of applied ceramic technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.4

H-Index - 57

eISSN - 1744-7402

pISSN - 1546-542X

DOI - 10.1111/ijac.12750

Subject(s) - selected area diffraction , transmission electron microscopy , high resolution transmission electron microscopy , materials science , monoclinic crystal system , molybdenum , electron diffraction , in situ , molybdenum trioxide , phase (matter) , electron microscope , crystallography , diffraction , analytical chemistry (journal) , nanotechnology , optics , chemistry , crystal structure , metallurgy , organic chemistry , physics

We use in‐situ environmental transmission electron microscopy ( ETEM ) to investigate the phase transformation of α‐MoO 3 in vacuum. In‐situ selected area electron diffraction ( SAED ) indicates that α‐MoO 3 directly transfers to monoclinic MoO 2 without intermediate phase; however, high resolution transmission electron microscopy ( HRTEM ) study reveals that Mo 4 O 11 precipitates on the surface of MoO 2 matrix. Judging from the size of Mo 4 O 11 and its orientation relationship with MoO 2 , we believe that the formation of Mo 4 O 11 is due to the reaction between MoO 2 and the untransformed MoO 3 .

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