a near spherical la 3+ doping 1-x la x o 2 Nanopolishing powder and preparation method thereof
A near-spherical, polishing powder technology, applied in the field of near-spherical La3+-doped Ce1-xLaxO2 nano-polishing powder and its preparation, can solve the problems of high cost of LiCl salt and unsuitable for mass production of powder, and reduce polishing time, size and shape. Good appearance and simple preparation process
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Embodiment 1
[0027] 1) Take 0.9 mmol of Ce(NO 3 ) 3 ·6H 2 O, 0.1 mmol La(NO 3 ) 3 ·6H 2 O, the sodium nitrate of 5mmol, the sodium chloride of 5mmol are mixed and ground in crucible to obtain mixture;
[0028] 2) Pour the mixture into anhydrous ethanol and stir magnetically evenly at a rotating speed of 600r / min, then pour it into a crucible and dry it in a drying oven at 60°C to obtain a mixed salt;
[0029] 3) Place the dried mixed salt together with the crucible in a muffle furnace at a heating rate of 5°C / min from room temperature to 750°C for 3 hours, and then cool down to 500°C at a cooling rate of 5°C / min and then cool down naturally ;
[0030] 4) The calcined product is washed with deionized water at 80° C. with magnetic stirring to remove the impurity salt ions to obtain a white precipitate;
[0031] 5) Pour the white precipitated product into a centrifuge tube, wash it 3 times with deionized water at a rotation speed of 6000r / min in a centrifuge, 2min each time, and then p...
Embodiment 2
[0034] 1) Take 0.9 mmol of Ce(NO 3 ) 3 ·6H 2 O, 0.1 mmol La(NO 3 ) 3 ·6H2 O, the sodium nitrate of 5mmol, the sodium chloride of 5mmol are mixed and ground in crucible to obtain mixture;
[0035] 2) Pour the mixture into absolute ethanol and stir evenly with magnetic force at a rotating speed of 500r / min, then pour it into a crucible and dry it in a drying oven at 60°C to obtain mixed salt;
[0036] 3) Place the dried mixed salt together with the crucible in a muffle furnace at a heating rate of 5°C / min from room temperature to 800°C for 2 hours, and then cool down to 500°C at a cooling rate of 5°C / min and then cool down naturally. ;
[0037] 4) The calcined product is washed with deionized water at 60° C. with magnetic stirring to remove the impurity salt ions to obtain a white precipitate;
[0038] 5) Pour the white precipitated product into a centrifuge tube, wash it 3 times with deionized water at a rotational speed of 7000r / min in a centrifuge, 2min each time, and t...
Embodiment 3
[0041] 1) Take 0.9 mmol of Ce(NO 3 ) 3 ·6H 2 O, 0.1 mmol La(NO 3 ) 3 ·6H 2 O, the potassium chloride of 5mmol, the sodium chloride of 5mmol are mixed and ground in crucible to obtain mixture;
[0042] 2) Pour the mixture into absolute ethanol and stir evenly with magnetic force at a rotating speed of 500r / min, then pour it into a crucible and dry it in a drying oven at 70°C to obtain a mixed salt;
[0043] 3) Place the dried mixed salt together with the crucible in a muffle furnace at a heating rate of 5°C / min from room temperature to 800°C for 3 hours, and then cool down to 500°C at a cooling rate of 5°C / min and then cool down naturally ;
[0044] 4) The calcined product is washed with deionized water at 70° C. with magnetic stirring to remove the impurity salt ions to obtain a white precipitate;
[0045] 5) Pour the white precipitated product into a centrifuge tube, wash it 3 times with deionized water at a rotation speed of 6000r / min in a centrifuge, 2min each time, ...
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