Graphene loaded zirconium oxide composite material, preparing method thereof, and application thereof as desulfurizer adsorbent
A composite material, zirconia technology, applied in chemical instruments and methods, alkali metal compounds, adsorbed water/sewage treatment, etc., can solve the problem of limited specific surface area and effective adsorption area of composite materials, easy agglomeration of nano-ions, and poor distribution uniformity. and other problems, to achieve the effect of easy regeneration and recycling, large adsorption capacity, and prevention of agglomeration
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Example Embodiment
[0048] Example 1
[0049] The graphene-supported zirconia composite material of this embodiment is prepared by the following method:
[0050] 1) Preparation of graphene oxide dispersion:
[0051] a) Add 138ml of concentrated sulfuric acid (98% by mass) into a 1000ml beaker, place it in an ice water bath, and add 3.0g of NaNO successively under stirring 3 And 3.0g of graphite powder, continue to vigorously stir for 15min; slowly add 18.0g of potassium permanganate, stir for 2h for reaction, obtain mixture A;
[0052] b) Place the beaker containing the obtained mixture A in a constant temperature water bath at 35°C, and after stirring for 1 hour, transfer the beaker to an ice-water bath, add 240ml of deionized water dropwise, and control the system temperature below 60°C to obtain mixture B;
[0053] c) Place the beaker containing the obtained mixture B in a water bath at 95°C and stir for 30 minutes; transfer the beaker to room temperature, add 600ml deionized water to dilute with stirring,
Example Embodiment
[0060] Example 2
[0061] The graphene-supported zirconia composite material of this embodiment is prepared by the following method:
[0062] 1) Preparation of graphene oxide dispersion:
[0063] a) Under the condition of 0~3℃, add 1.0g of NaNO 3 Add 2.0g of graphite powder to 92ml of concentrated sulfuric acid, slowly add 12.0g of potassium permanganate, and stir for 2h to react to obtain mixture A;
[0064] b) Place the beaker containing the obtained mixture A in a constant temperature water bath at 35°C, and after stirring for 1 hour, add 160 ml of deionized water dropwise, and the system temperature is controlled below 60°C to obtain mixture B;
[0065] c) Place the beaker containing the obtained mixture B in a water bath at 98°C and stir for 30 minutes; add 300ml of deionized water to dilute, and then add 15ml of hydrogen peroxide with a mass concentration of 30% and mix it with a 5% mass concentration Wash with hydrochloric acid and centrifuge 4 times (the rotation speed of each aci
Example Embodiment
[0070] Example 3
[0071] The graphene-supported zirconia composite material of this embodiment is prepared by the following method:
[0072] 1) Preparation of graphene oxide dispersion:
[0073] a) Under 1℃, add 0.25g of NaNO 3 Add 1.0g of graphite powder to 92ml of concentrated sulfuric acid, slowly add 5.0g of potassium permanganate, and stir for 2h for reaction to obtain mixture A;
[0074] b) Place the beaker containing the obtained mixture A in a constant temperature water bath at 35°C, and after stirring for 1 hour, add 80ml of deionized water dropwise, and control the system temperature below 50°C to obtain mixture B;
[0075] c) Place the beaker containing the obtained mixture B in a water bath at 97°C and stir for 30 minutes; add 150ml of deionized water to dilute, then add 8ml of hydrogen peroxide with a mass concentration of 30%, and mix with 5% by mass Wash with hydrochloric acid and centrifuge 4 times (the rotation speed of each acid washing is 5000 rpm, time is 5 minutes),
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