A kind of hydrothermal synthesis method of illite-based anatase compound
A technology for hydrothermal synthesis and complexes, which is applied to titanium compounds, silicon compounds, chemical instruments and methods, etc., can solve the problem of no interlayer ion exchange modification, etc., and achieves improved visible light catalytic activity, good whiteness, and synthetic low temperature effect
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Embodiment 1
[0023] Take 20g of titanyl sulfate raw material, dissolve it in 250ml of water, stir well, take 2g of illite powder, add it to titanyl sulfate aqueous solution, stir at high speed for 1h, after that, add 0.5mol / L hexamethylenetetra Add the amine solution into the illite titanyl sulfate slurry under stirring, adjust the pH to 6.5, continue to stir for 1 hour, transfer the slurry to a polytetrafluoro-lined stainless steel hydrothermal reaction kettle, seal it, and keep it warm at 120°C After cooling for 2 hours, solid-liquid separation, washing the precipitate, and drying the precipitate at 100° C., the illite anatase composite is obtained. XRD phase analysis of the composite shows that it contains illite and anatase crystalline phases. Take 0.2g illite anatase complex, add 10mg / L methyl orange solution, and irradiate under visible light. After 6h, the decolorization rate of methyl orange reaches 95.6%.
Embodiment 2
[0025]Take 20g of titanyl sulfate raw material, dissolve it in 250ml of water, stir well, take 10g of illite powder, add it to titanyl sulfate aqueous solution, ultrasonically disperse and activate it for 2 hours, after that, use 0.5mol / L hexamethylenetetramine Add the solution into the illite titanyl sulfate slurry under stirring, adjust the pH to 7, continue to stir for 2 hours, transfer the slurry to a polytetrafluoro-lined stainless steel hydrothermal reaction kettle, seal it, and keep it warm at 100°C for 6 hours , followed by cooling, solid-liquid separation, washing the precipitate, and drying the precipitate at 120° C. to obtain an illite anatase composite. XRD phase analysis of the composite shows that it contains illite and anatase crystalline phases. Take 0.5g illite anatase complex, add 10mg / L methyl orange solution, and irradiate under visible light. After 6h, the decolorization rate of methyl orange reaches 97.1%.
Embodiment 3
[0027] Take 20g of titanyl sulfate raw material, dissolve it in 250ml of water, stir it well, take 12g of illite powder, add it to titanyl sulfate aqueous solution, stir at high speed for 4h, after that, use 0.25mol / L hexamethylenetetra Add the amine solution into the illite titanyl sulfate slurry under stirring, adjust the pH to 6.5, continue to stir for 3 hours, transfer the slurry to a polytetrafluoro-lined stainless steel hydrothermal reaction kettle, seal it, and keep it warm at 140°C After cooling for 2 hours, solid-liquid separation, washing the precipitate, and drying the precipitate at 100° C., the illite anatase composite is obtained. XRD phase analysis of the composite shows that it contains illite and anatase crystalline phases. Take 0.6g illite anatase complex, add 10mg / L methyl orange solution, and irradiate under visible light. After 6h, the decolorization rate of methyl orange reaches 92.6%.
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