A kind of titanium stannate photocatalyst and its preparation method, application
A technology of photocatalyst and stannic acid, which is applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., to achieve the effects of simple process, easy control of the preparation process, and excellent light-absorbing ability
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Embodiment 1
[0043] Embodiment 1: the preparation of titanium stannate photocatalyst of the present invention
[0044] (1) TiO 2 and SnO 2 Mixed at a molar ratio of 1:9, ground, mixed thoroughly, and calcined at 1500°C for 10 hours; to obtain light yellow Ti 0.1 sn 0.9 o 2 sample;
[0045] (2) the yellowish Ti obtained in step (1) 0.2 sn 0.8 o 2 Mix the sample with magnesium powder (3 microns in particle size) at a molar ratio of 1:3, grind until fully mixed, move the above sample to a tube furnace, and evacuate to 10 -5 Pa, calcined at 300°C for 3h to get dark green Ti 0.1 sn 0.9 o 2-z sample;
[0046] (3) 1g dark green Ti obtained in step (2) 0.1 sn 0.9 o 2-x Add 0.5ml of potassium chloroplatinate solution with a concentration of 1g / 100ml to the sample, then add 20ml of distilled water, stir for 24h, dry at 200°C under a 150W infrared lamp, and then transfer the obtained sample to a tube furnace, hydrogen Insulated at 300°C for 3h under atmosphere to obtain the titanium ...
Embodiment 2
[0048] Embodiment 2: the preparation of titanium stannate photocatalyst of the present invention
[0049] (1) TiO 2 and SnO 2 Mixed at a molar ratio of 2:8, ground, mixed thoroughly, and calcined at 1500°C for 10 hours; a light yellow Ti 0.2 sn 0.8 o 2 sample;
[0050] (2) the yellowish Ti obtained in step (1) 0.2 sn 0.8 o 2 The sample is mixed with magnesium powder (3 microns in particle size) at a molar ratio of 1:3, ground and mixed thoroughly, the above sample is moved to a tube furnace, and vacuumed to 10 -5 Pa, calcined at 300°C for 3h to get dark green Ti 0.2 sn 0.8 o 2-z sample;
[0051] (3) 1g dark green Ti obtained in step (2) 0.2 sn 0.8 o 2-z Add 0.5ml of potassium chloroplatinate with a concentration of 1g / 100ml to the sample, then add 20ml of distilled water, stir for 24 hours, dry at 200°C under a 150W infrared lamp, and then transfer the obtained sample to a tube furnace, under a hydrogen atmosphere Insulated at 300°C for 3h to obtain the titani...
Embodiment 3
[0053] Embodiment 3: the preparation of titanium stannate photocatalyst of the present invention
[0054] (1) TiO 2 and SnO 2 Mixed at a molar ratio of 4:6, ground, mixed thoroughly, and calcined at 1500°C for 10 hours; a light yellow Ti 0.4 sn 0.6 o 2 sample;
[0055] (2) the yellowish Ti obtained in step (1) 0.4 sn 0.6 o 2 The sample is mixed with magnesium powder (3 microns in particle size) at a molar ratio of 1:3, ground and mixed thoroughly, the above sample is moved to a tube furnace, and vacuumed to 10 -5 Pa, calcined at 300°C for 3h to get dark green Ti 0.4 sn 0.6 o 2-z sample;
[0056] (3) 1g dark green Ti0.4Sn obtained in step (2) 0.6 o 2-z Add 0.5ml of potassium chloroplatinate with a concentration of 1g / 100ml to the sample, then add 20ml of distilled water, stir for 24 hours, dry at 200°C under a 150W infrared lamp, and then transfer the obtained sample to a tube furnace, under a hydrogen atmosphere Insulated at 300°C for 3h to obtain the titanium ...
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