a rich co 2 Method for hydrothermally synthesizing yttrium phosphate nanospheres

A technology of hydrothermal synthesis and yttrium phosphate, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of not very high degree of crystallization, uneven size, lack of crystal shape and appearance, etc., to achieve uniform size, Good crystallization degree, environmental friendly effect
CN104692350BActive Publication Date: 2016-07-13INST OF GEOCHEM CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF GEOCHEM CHINESE ACADEMY OF SCI
Publication Date
2016-07-13

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Abstract

The invention discloses a method for hydrothermally synthesizing a yttrium phosphate nanosphere by using rich CO2. The method is characterized by comprising the following steps: respectively preparing a Y<3+> salt solution and a PO4<3+> salt solution at room temperature; adding the two solutions to a reaction kettle at a volume ratio of 1:1, stirring at the same time, and continuously stirring for 30 minutes to 1 hour; introducing CO2 gas or adding dry ice to the reaction kettle, controlling the pressure inside the reaction kettle to 1-10 Mpa, and sealing the high-pressure reaction kettle; heating the high-pressure reaction kettle, determining reaction temperature of 100-200 DEG C and duration time of 12 hours to 2 days, and then naturally cooling the high-pressure reaction kettle to room temperature; filtering a reacted product, and successively washing and centrifugalizing twice by using deionized water and absolute ethyl alcohol; and drying the washed and centrifugalized product at 50-100 DEG C for more than 6 hours to obtain a final pure product.
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Description

technical field

[0001] The invention relates to a preparation method of a rare earth phosphate nanometer material, belonging to the technical field of functional material synthesis. Background technique

[0002] In the periodic table of elements, yttrium (Y) is in group IIIB, with an atomic number of 39, and belongs to heavy rare earth elements. Yttrium and another rare earth element, cerium, are the two most abundant rare earth elements in the earth's crust. The lanthanides with atomic numbers 57 to 71 are collectively referred to as rare earth elements together with the congeners yttrium (Y) and scandium (Sc). Rare earth elements have a special electron shell structure (4f 0-145 d 0-1 6s 2 ), their outer electrons are basically the same, and the inner 4f electron energy levels are very similar, and 4f is an unfilled shell, and ions with completely empty, half-filled and fully-filled electron orbits are optically inert and stable. , because of the characteristics of the...

Claims

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