Wideband efficient visible light responsive photocatalyst LiFeSn2O6 and preparing method thereof
A photocatalyst and visible light technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., can solve the problems of limited photocatalyst types, low photoconversion efficiency, and difficult synthesis, etc., and achieve visible light response The effect of wide frequency 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 , Fe 2 o 3 and SnO 2 The powder press LiFeSn 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 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, LiFeSn 2 o 6 powder.
[0021] The prepared photocatalyst has a methyl orange removal rate of 97.8% 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 , Fe 2 o 3 and SnO 2 The powder press LiFeSn 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 980°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, LiFeSn 2 o 6 powder.
[0026] The prepared photocatalyst has a methyl orange removal rate of 98.6% 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 , Fe 2 o 3 and SnO 2 The powder press LiFeSn 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 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, LiFeSn 2 o 6 powder.
[0031] The prepared photocatalyst has a methyl orange removal rate of 97.5% in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.
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