Visible light response photocatalyst LiB3Sn2O9 and method for preparing same
A photocatalyst, visible light technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of limited types of photocatalysts, low light conversion efficiency, difficult synthesis, etc., and achieve visible light response frequency. The effect of wide range, high light conversion efficiency and simple preparation method
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Embodiment 1
[0018] (1) The analytically pure chemical raw material Li 2 CO 3 , B 2 o 3 and SnO 2 of powder by LiB 3 sn 2 o 9 The composition weighs the ingredients.
[0019] (2) Mix the raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and absolute ethanol, ball mill for 8 hours, mix and grind, take out and dry, and pass through a 200-mesh sieve.
[0020] (3) Pre-fire the uniformly mixed powder in step (2) at 900°C, keep it warm for 6 hours, cool it down to room temperature naturally, and then pulverize it through a ball mill to make the average particle diameter smaller than 2 μm, that is, LiB is obtained 3 sn 2 o 9 powder.
[0021] The prepared photocatalyst has a methyl orange removal rate of 96.4% in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.
Embodiment 2
[0023] (1) The analytically pure chemical raw material Li 2 CO 3 , B 2 o 3 and SnO 2 of powder by LiB 3 sn 2 o 9 The composition weighs the ingredients.
[0024] (2) Mix the raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and absolute ethanol, ball mill for 8 hours, mix and grind, take out and dry, and pass through a 200-mesh sieve.
[0025] (3) Pre-fire the uniformly mixed powder in step (2) at 930°C, keep it warm for 6 hours, cool it down to room temperature naturally, and then pulverize it with a ball mill to make the average particle diameter smaller than 2 μm, and then you can get LiB 3 sn 2 o 9 powder.
[0026] The prepared photocatalyst has a methyl orange removal rate of 98.7% in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.
Embodiment 3
[0028] (1) The analytically pure chemical raw material Li 2 CO 3 , B 2 o 3 and SnO 2 of powder by LiB 3 sn 2 o 9 The composition weighs the ingredients.
[0029] (2) Mix the raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and absolute ethanol, ball mill for 8 hours, mix and grind, take out and dry, and pass through a 200-mesh sieve.
[0030] (3) Pre-fire the uniformly mixed powder in step (2) at 950°C, keep it warm for 6 hours, cool it down to room temperature naturally, and then pulverize it through a ball mill to make the average particle diameter smaller than 2 μm, that is, LiB is obtained 3 sn 2o 9 powder.
[0031] The prepared photocatalyst has a methyl orange removal rate of 97.1% in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.
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