A kind of sulfonated graphene airgel supported by titanium dioxide quantum dots and its preparation method and application
A technology of sulfonated graphene and titanium dioxide, applied in the field of sulfonated graphene aerogel and its preparation, can solve the problems of high energy consumption, large pollution, failure to effectively control particle size and the like, and achieve the effect of increasing molecular steric hindrance
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Embodiment 1
[0030] The specific steps for preparing the sulfonated graphene airgel supported by titanium dioxide quantum dots are as follows:
[0031](1) Mix 10 mL of 2 mg / mL aqueous dispersion of sulfonated graphene with 5 mL of 0.5 mol / L sodium dodecyl sulfate aqueous solution, and sonicate for 10-15 min to make sodium dodecyl sulfate Fully dispersed on the sulfonated graphene sheet to obtain a uniform dispersion A;
[0032] (2) Then add 10 mL of 0.01 mol / L titanium trichloride aqueous solution to the dispersion A obtained in step (1) and stir fully to make the trivalent titanium ions fully contact with the hydrophilic end of sodium lauryl sulfate , to obtain a uniform dispersion B;
[0033] (3) Add 5 mL of 1 wt% hydrogen peroxide solution to the dispersion B obtained in step (2) and oxidize it at room temperature for 1 h. After the oxidation process, centrifuge the dispersion at 2000 rpm for 2 min, separate layers, pour The supernatant was removed to remove water and sodium lauryl su...
Embodiment 2
[0036] The specific steps for preparing the sulfonated graphene airgel supported by titanium dioxide quantum dots are as follows:
[0037] (1) Mix 20 mL of 2 mg / mL aqueous dispersion of sulfonated graphene with 10 mL of 0.5 mol / L sodium dodecyl sulfate aqueous solution, and sonicate for 10-15 min to make sodium dodecyl sulfate Fully dispersed on the sulfonated graphene sheet to obtain a uniform dispersion A;
[0038] (2) Then add 20 mL of 0.01 mol / L titanium trichloride aqueous solution to the dispersion A in step (1) and stir thoroughly to make the trivalent titanium ions fully contact with the hydrophilic end of sodium lauryl sulfate, Obtain a uniform dispersion B;
[0039] (3) Add 10 mL of 1 wt% hydrogen peroxide solution to the dispersion B obtained in step (2) and oxidize at room temperature for 1 h. After the oxidation process, centrifuge the dispersion at 2000 rpm for 2 min, separate layers, and pour out Water and sodium lauryl sulfate were removed from the supernatan...
Embodiment 3
[0042] The specific steps for preparing the sulfonated graphene airgel supported by titanium dioxide quantum dots are as follows:
[0043] (1) Mix 30 mL of 2 mg / mL aqueous dispersion of sulfonated graphene with 15 mL of 0.5 mol / L sodium dodecyl sulfate aqueous solution, and ultrasonicate for 10-15 min to make sodium dodecyl sulfate Fully dispersed on the sulfonated graphene sheet to obtain a uniform dispersion A;
[0044] (2) Then add 30 mL of 0.01 mol / L titanium trichloride aqueous solution to the dispersion A in step (1) and stir fully to make the trivalent titanium ions fully contact with the hydrophilic end of sodium lauryl sulfate, Obtain a uniform dispersion B;
[0045] (3) Add 15 mL of 1 wt% hydrogen peroxide solution to the dispersion B obtained in step (2) and oxidize at room temperature for 1 h. After the oxidation process, centrifuge the dispersion at 2000 rpm for 2 min, separate layers, and pour out Water and sodium lauryl sulfate were removed from the supernatan...
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