Anti-biofouling hydrogel film material for extracting uranium from seawater and preparation method thereof
A thin-film material and hydrogel technology, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., can solve the problems such as the reduction of uranium adsorption capacity, and achieve simple preparation methods, high economic benefits, and fast film formation speed Effect
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Embodiment 1
[0024] Embodiment 1: A method for preparing an anti-biofouling hydrogel film material for extracting uranium from seawater, at least comprising the following steps:
[0025] (1) Preparation of PAO sol
[0026] Weigh 13.02g of hydroxylamine hydrochloride in a round bottom flask, add 100mL N-N dimethylformamide (DMF) into the round bottom flask and stir until hydroxylamine hydrochloride is completely dissolved, then add 10.01g of anhydrous sodium carbonate and magnetically stir at room temperature 2h, adjust the pH of the solution to 7; weigh 10.01g of polyacrylonitrile and add it to a round-bottomed flask, stir at room temperature for 30min until it is evenly dispersed in the solution, put the round-bottomed flask into an oil bath at 65°C, and heat at 250rmp / min speed magnetic stirring and oximation reaction for 12 hours, and finally centrifuged to obtain amidoximated polyacrylonitrile PAO sol;
[0027] (2) Preparation of PAO-CB sol
[0028] Add 100 μL tetraethylenepentamine...
Embodiment 2
[0043] Embodiments two to five: the difference between embodiments two to five and embodiment one is that the hydrogel film material prepared by adding tetraethylenepentamine with different raw material ratios, the test results of seawater extracting uranium are as shown in table 3, explain When 100 μL tetraethylenepentamine was added, the prepared alkali-treated hydrogel film material had the best uranium extraction performance and high mechanical properties (tensile strength was 18.92Mpa). In addition, after the hydrogel film materials prepared in Example 2 and Example 5 were soaked in natural seawater for 7 days, the scanning electron micrographs of the anti-marine microorganism adsorption were as follows: Figure 3-4 , its surface obviously adheres to marine organisms. Relatively speaking, the hydrogel film material prepared in Example 1 has the best anti-marine biofouling effect.
[0044] Table 3 Effect of different raw material ratios on uranium adsorption rate
[0045]...
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