Visible light responded photocatalyst Co4GaSbO8 and preparation method thereof
A photocatalyst and visible light technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of limited types of photocatalysts, low light conversion efficiency and difficult synthesis and other problems, to achieve the effects of wide visible light response frequency range, high light conversion efficiency and simple preparation method
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Embodiment 1
[0019] (1) 99.9% analytically pure chemical raw materials CoO, Ga 2 O 3 and Sb 2 O 5 of virgin powder by Co 4 GaSbO 8 The composition of weighing ingredients.
[0020] (2) Mix the raw materials prepared in step (1), put it into a ball mill, add zirconia balls and anhydrous ethanol, ball mill for 8 hours, mix and grind, take out and dry, and pass through a 200-mesh sieve.
[0021] (3) Pre-fire the uniformly mixed powder in step (2) at 770°C, keep the temperature for 6 hours, naturally cool to room temperature, and then pulverize by a ball mill to make the average particle diameter smaller than 2 μm, that is, to obtain Co. 4 GaSbO 8 powder.
[0022] The prepared photocatalyst can remove 98.1% of methyl orange in 60 minutes under the irradiation of visible light with a wavelength greater than 420 nm.
Embodiment 2
[0024] (1) 99.9% analytically pure chemical raw materials CoO, Ga 2 O 3 and Sb 2 O 5 of virgin powder by Co 4 GaSbO 8 The composition of weighing ingredients.
[0025] (2) Mix the raw materials prepared in step (1), put it into a ball mill, add zirconia balls and anhydrous ethanol, ball mill for 8 hours, mix and grind, take out and dry, and pass through a 200-mesh sieve.
[0026] (3) Pre-fire the uniformly mixed powder in step (2) at 800°C, keep the temperature for 6 hours, cool to room temperature naturally, and then pulverize by a ball mill to make the average particle diameter smaller than 2 μm, that is, to obtain Co. 4 GaSbO 8 powder.
[0027] The prepared photocatalyst can remove 98.7% of methyl orange in 60 minutes under the irradiation of visible light with a wavelength greater than 420 nm.
Embodiment 3
[0029] (1) 99.9% analytically pure chemical raw materials CoO, Ga 2 O 3 and Sb 2 O 5 of virgin powder by Co 4 GaSbO 8 The composition of weighing ingredients.
[0030] (2) Mix the raw materials prepared in step (1), put it into a ball mill, add zirconia balls and anhydrous ethanol, ball mill for 8 hours, mix and grind, take out and dry, and pass through a 200-mesh sieve.
[0031] (3) Pre-fire the uniformly mixed powder in step (2) at 820 °C, keep the temperature for 6 hours, naturally cool to room temperature, and then pulverize by a ball mill to make the average particle diameter smaller than 2 μm, that is, to obtain Co. 4 GaSbO 8 powder.
[0032] The prepared photocatalyst can remove 97.4% of methyl orange in 60 min under the irradiation of visible light with a wavelength greater than 420 nm.
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