Method for preparing nitrogen doped nano titanium dioxide photocatalyst with visible light activity by direct heat treatment method
A technology of nano-titanium dioxide and nitrogen doping, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of complex magnetron sputtering devices and high prices
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Embodiment 1
[0019] First dissolve urea with distilled water to obtain a 0.5M aqueous solution, take 50ml of urea solution, add 15g of commercially available TiO 2 powder, followed by magnetic stirring at room temperature for 30 minutes. Dry in a water bath at 70°C to obtain a white precursor. Heat treatment at 350°C for 6 hours. A yellow powder was obtained after grinding.
Embodiment 2
[0021] First dissolve guanidine carbonate with distilled water to obtain a 0.1M aqueous solution, take 50ml of guanidine carbonate solution, add 15g of commercially available TiO 2 powder, then magnetically stirred at room temperature for 30 minutes. Dry in a water bath at 90°C to obtain a white precursor. Heat treatment at 350°C for 5 hours. A yellow powder was obtained after grinding.
Embodiment 3
[0023] First dissolve triethanolamine with distilled water to obtain a 6M aqueous solution, take 50ml of triethanolamine solution, add 15g of commercially available TiO 2 powder, then magnetically stirred at room temperature for 30 minutes. Dry in a water bath at 90°C to obtain a white precursor. Heat treatment at 650°C for 3.5 hours. A yellow powder was obtained after grinding.
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