Method for preparing BiFeO3 nano-particle and fine particle
A nanoparticle and microparticle technology, which is applied in nanostructure manufacturing, chemical instruments and methods, nanotechnology, etc., can solve the problems of expensive equipment, process and complexity, and achieve the effect of high particle purity and wide particle size distribution
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[0011] Example 1
[0012] Weigh 0.01 mole Fe(NO 3 ) 3 .9H 2 O and Bi(NO 3 ) 3 .5H 2 O, separately dissolved in 100 ml of deionized water, and then mixed. Add 0.01 mole of glycine and stir until Fe(NO 3 ) 3 .9H 2 O and Bi(NO 3 ) 3 .5H 2 O completely dissolved. Add 10 ml of oxalic acid to the mixed solution for dehydration, pour the resulting solution into an evaporating dish, and then place it in a microwave oven with a power of 600 watts. Heat for 30 minutes until it evaporates and burns to obtain loose BiFeO. 3 Granular powder sample.
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[0013] Example 2
[0014] Weigh 0.005 moles of Fe according to the stoichiometric ratio of 1:1 2 O 3 And Bi 2 O 3 , Were dissolved in 100 ml of 50% (volume ratio) dilute nitric acid to prepare a solution, and then mixed. Add 0.005 mol of glycine to the mixed solution and stir to dissolve. Add 5 ml of oxalic acid to the mixed solution for dehydration, pour the resulting solution into an evaporating dish, and then place it in a microwave oven with a microwave power of 800 watts. Heat for 20 minutes until it evaporates and burns to obtain loose BiFeO. 3 Granular powder sample.
Example Embodiment
[0015] Example 3
[0016] Weigh 0.01 mole Fe(NO 3 ) 3 .9H 2 O and Bi(NO 3 ) 3 .5H 2 O, separately dissolved in 100 ml of deionized water, and then mixed. Add 0.01 mole of glycine to the mixed solution and stir to dissolve. Add 10 ml of oxalic acid to the mixed solution for dehydration, pour the resulting solution into an evaporating dish, place it in a microwave oven, and use 800 watts of power to heat for 20 minutes until it evaporates and burns to obtain BiFeO 3 Granular powder sample. The prepared BiFeO 3 The granule powder sample is compressed with an ordinary small tablet press (generally 2mm thick), and the BiFeO 3 The sample is placed in a crucible, then placed in a microwave oven and sintered at 800 watts for five minutes, and then quickly quenched to room temperature to obtain BiFeO 3 A sample of bulk particles.
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