Modified attapulgite loaded with copper and silver ions and silver ions and preparation method thereof
A technology for modifying attapulgite and attapulgite, which is applied in the directions of separation methods, chemical instruments and methods, and other chemical processes to achieve the effects of expanding the spectral absorption range and low price
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[0019] The present invention will be further described below in conjunction with specific examples.
[0020] A modified attapulgite loaded with copper and silver ions is prepared through the following steps:
[0021] (1) When weighing sodium silicate with a mass ratio of 1-5:1 and distilled water to form a uniform suspension, add attapulgite with a particle size of about 1-200 μm and keep stirring. Mix until it forms a semi-dry viscous shape, make spherical granules, and let it dry naturally for later use.
[0022] (2) In the uniform sodium silicate suspension, add titanium dioxide powder at a ratio of 0.01-0.99 g / ml, and stir while adding until the titanium dioxide is evenly mixed.
[0023] (3) Put the prepared attapulgite spherical carrier into the viscous liquid in (2), and stir until the attapulgite spherical carrier is evenly loaded with titanium dioxide. After it is dried naturally, it is then calcined at 250°C for 0.5-4h, and after natural cooling, it is washed repeat...
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