Visible-light response light catalyst Li2BaSn2O6 and preparation method thereof
A photocatalyst and visible light technology, which is applied in chemical instruments and methods, botanical equipment and methods, heterogeneous catalyst chemical elements, etc., can solve the problems of limited photocatalyst types, low light conversion efficiency, and difficult synthesis, and achieve visible light The effect of wide response frequency range, high photoconversion efficiency, and simple preparation method
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Embodiment 1
[0018] (1) The analytically pure chemical raw material Li 2 CO 3 、BaCO 3 and SnO 2 powder according to Li 2 BaSn 2 o 6 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 1000°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, Li 2 BaSn 2 o 6 powder.
[0021] The prepared photocatalyst has a methyl orange removal rate of 97.3% 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 、BaCO 3 and SnO 2 powder according to Li 2 BaSn 2 o 6 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 1030°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, Li 2 BaSn 2 o 6 powder.
[0026] The prepared photocatalyst has a methyl orange removal rate of 99.0% 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 、BaCO 3 and SnO 2 powder according to Li 2 BaSn 2 o 6 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 1050°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, Li 2 BaSn 2 o 6 powder.
[0031]The prepared photocatalyst has a methyl orange removal rate of 98.4% in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.
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