Method for preparing highly active Fe/Sn ion co-doped nano phtocatalyst of titanium dioxide
A co-doping, photocatalyst technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of large loss of active components, difficult recovery, and low photogenerated current-carrying interface transfer rate, etc. Achieve the effect of improving photocatalytic activity and photocatalytic degradation rate
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[0017] Example 1
[0018] First drop 17ml of tetrabutyl titanate into 23ml of absolute ethanol, continue to magnetically stir, and then slowly drop 11ml of acetylacetone as the complexing agent, after full reaction, a uniform solution a is obtained; add 2.00g of SnCl 4 ·5H 2 O and 0.02g Fe(NO 3 ) 3 ·9H 2 O was dissolved in 47ml of absolute ethanol, then 2ml of distilled water and 0.2ml of nitric acid were added dropwise, and a uniform solution b was obtained by magnetic stirring. The reaction temperature is controlled to 30°C, and solution b is slowly added dropwise to solution a for hydrolysis reaction. Fe that will form at the end 3+ / Sn 4+ Ion doped TiO 2 The sol is sealed and aged at room temperature.
[0019] Immerse the pretreated clean glass tube (1cm×2.5cm) into the prepared sol solution at a speed of 4cm / min and let it stand for 2min. After the liquid level is stable, pull it up vertically at the same pulling speed, and the wet film Place it at room temperature for 5 minu...
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[0021] Example 2
[0022] The process steps of this embodiment are basically the same as those of embodiment 1, except that Fe(NO 3 ) 3 ·9H 2 The doping amount of O is 0.10 g. The photocatalytic activity test test showed that the 0.5% Fe of this example 3+ / 11.41% Sn 4+ Co-doped TiO 2 The photocatalytic degradation rate of the photocatalyst film to the methyl orange solution was 81.56%.
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