Adsorbent, preparation method thereof and mask containing adsorbent

The invention relates to an adsorbent, a preparation method thereof and a mask containing the adsorbent. The adsorbent comprises modified mesoporous silica, mesoporous silica-silver phosphate-titaniumdioxide composite particles and modified chloromethyl polystyrene. The mask comprises a mask body, fixing pieces and an elastic sealing gasket arranged on the edge of the inner side of the mask body.The mask body comprises a surface layer, a filtering layer and a skin-friendly layer which are sequentially distributed from outside to inside. An adsorption layer is arranged between the filtering layer and the skin-friendly layer, and the adsorption layer is filled with the adsorbent. The sealing gasket is arranged on the edge of the inner side of the skin-friendly layer. The inside of the maskis filled with the adsorbent, the mask can rapidly absorb carbon dioxide generated by breathing, and harm to a human body due to too high concentration of carbon dioxide in the mask is avoided. 本发明涉及一种吸附剂及其制备方法以及含有该吸附剂的口罩，所述吸附