Carbon-loaded titanium dioxide composite catalyst and preparation method and application thereof
A composite catalyst and titanium dioxide technology, applied in physical/chemical process catalysts, chemical instruments and methods, water treatment of special compounds, etc., to achieve the effects of high reusability, rapid degradation, and high stability
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Embodiment 1
[0031] Embodiment 1: The carbon-supported titanium dioxide composite catalyst is obtained according to the following steps: the first step, sodium alginate is dispersed in distilled water and soaked and stirred to obtain an aqueous solution of sodium alginate with a mass concentration of 2%, which is added to alginic acid Add absolute ethanol to the sodium solution, and then add dilute hydrochloric acid to adjust the pH value to 2 to 3 to obtain mixture 1, wherein 5ml of absolute ethanol is added to each gram of sodium alginate; the second step is to add Add tetrabutyl titanate dropwise for stirring, then undergo ultrasonication and aging in sequence to obtain mixture 2, and freeze and dry mixture 2 in turn to obtain titanium alginate airgel, wherein tetrabutyl titanate and seaweed The mass ratio of sodium alginate is 10 to 20:1; in the third step, the titanium alginate airgel is calcined under a nitrogen atmosphere to obtain a carbon-supported titanium dioxide composite cataly...
Embodiment 2
[0033] Embodiment 2: As an optimization of the above embodiment, in the first step, the G / M ratio of sodium alginate is 0.3 to 0.5.
Embodiment 3
[0034] Embodiment 3: As an optimization of the above embodiment, in the first step, the soaking time is 6h to 8h, and the stirring time is 30min to 35min.
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