Visible-light response photocatalyst Li3NdTi3O9 and preparation method thereof
A photocatalyst and visible light technology, which is applied in chemical instruments and methods, light water/sewage treatment, water pollutants, etc., can solve the problems of limited photocatalyst types, low light conversion efficiency, and difficult synthesis, and reach the visible light response frequency range wide, simple preparation method, and high photoconversion efficiency
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Embodiment 1
[0018] (1) The analytically pure chemical raw material Li 2 CO 3 、Nd 2 o 3 and TiO 2 The raw powder of Li 3 NdTi 3 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 until fine, take it out and dry it, and pass through a 200-mesh sieve.
[0020] (3) Pre-fire the uniformly mixed powder in step (2) at 750°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 3 NdTi 3 o 9 powder.
[0021] The prepared photocatalyst can remove 97.3% of methyl orange 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 、Nd 2 o 3 and TiO 2 The raw powder of Li 3 NdTi 3 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 until fine, take it out and dry it, and pass through a 200-mesh sieve.
[0025] (3) Pre-fire the uniformly mixed powder in step (2) at 780°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, that is, Li 3 NdTi 3 o 9 powder.
[0026] The prepared photocatalyst can remove 98.5% of methyl orange 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 、Nd 2 o 3 and TiO 2 The raw powder of Li 3 NdTi 3 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 until fine, take it out and dry it, and pass through a 200-mesh sieve.
[0030] (3) Pre-fire the uniformly mixed powder in step (2) at 800°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, that is, Li 3 NdTi 3 o 9 powder.
[0031] The prepared photocatalyst can remove 98.0% of methyl orange in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.
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