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제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and Structure of a New Mixed-metallic Phosphate, Nax(V2-y/Nby)(PO4)3 (x = 0.78, y =0.95)

등록일
2012년 2월 16일 16시 54분 21초
접수번호
1245
발표코드
MAT.P-1174 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
기용호, 이승수1, 윤호섭2
아주대학교 에너지시스템학부 응용화학과, Korea
1나노정보융합기술연구소/아주대학교, Korea
2아주대학교 화학과, Korea
The structures and properties of Na phosphates have been intensively investigated with a view to understanding their structural variations that seem to be contingent upon the type of the transition metals. As a result of our efforts to design new phosphates from the known phase, a new mixed-metallic phosphate, Na0.78(V1.05/Nb0.95)(PO4)3, has been prepared as single crystals and its crystal structure has been characterized through X-ray diffraction. In this compound the metal sites of trans-corner-sharing (V/Nb)O6 octahedra are occupied by statistically disordered V and Nb atoms which are linked together by tetrahedral PO4 groups and the polyhedra share O atoms to form a three-dimensional framework with large empty channels. The Na ions stay in this space and its stoichiometry seems to be adjusted by the sum of the oxidation states of each metal. Therefore, the classical charge balance of the title compound can be represented as [Na+]x[V3+]2-y[Nb5+]y[P5+]3[O2-]12.

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