Green synthetic magnetic composite nanomaterial, preparation method and application thereof
A magnetic composite nano, green synthesis technology, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., can solve the problems of easy generation of iron sludge, rapid response, difficult to control, etc., to reduce the leaching rate and adsorption force Strong, good strength effect
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[0049] A preparation method for green synthetic magnetic composite nanomaterials, comprising the following steps:
[0050] (1) Prepare green tea extract and tea dregs; the green tea extract is to use 60g of dried green tea, add 1L of distilled water, heat in a water bath at 80°C for 1h, and then vacuum filter, and the filtrate is the tea extract; the tea dregs among them, It is a solid dry matter powder obtained by placing the remaining green tea solids after preparing the green tea extract, drying them in an oven, and grinding them through a 100-mesh sieve;
[0051] (2) Prepare sodium alginate sol with green tea extract and sodium alginate; wherein the preparation of calcium alginate sol is to mix tea extract and sodium alginate according to the set Mix in a fixed ratio and stir evenly; the set ratio is 1.1-1.3g of sodium alginate per 50ml of green tea extract;
[0052] (3) Add tea residue and ferrous sulfate heptahydrate to the sodium alginate sol according to a set ratio t...
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