Photocatalyst SrLi2GeO4 responding to visible light and preparation method thereof
A photocatalyst and visible light technology, applied in chemical instruments and methods, botanical equipment and methods, heterogeneous catalyst chemical elements, etc., can solve problems such as narrow spectral response range, low light conversion efficiency, and difficult synthesis, and achieve responsive Wide frequency range, simple preparation method, and high photoconversion efficiency
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Embodiment 1
[0018] (1) The pure chemical raw material SrCO will be analyzed 3 , Li 2 CO 3 and GeO 2 powder by SrLi 2 GeO 4 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 800°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, to obtain SrLi 2 GeO 4 powder.
[0021] The prepared photocatalyst can remove 97.1% of methyl orange in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.
Embodiment 2
[0023] (1) The pure chemical raw material SrCO will be analyzed 3 , Li 2 CO 3 and GeO 2 powder by SrLi 2 GeO 4 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 820°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, to obtain SrLi 2 GeO 4 powder.
[0026] The prepared photocatalyst can remove 98.6% of methyl orange in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.
Embodiment 3
[0028] (1) The pure chemical raw material SrCO will be analyzed 3 , Li 2 CO 3 and GeO 2 powder by SrLi 2 GeO 4 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 850°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, to obtain SrLi 2 GeO 4 powder.
[0031] The prepared photocatalyst can remove 98.2% of methyl orange in 60 minutes under the irradiation of visible light with wavelength greater than 420nm.
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