Preparation method and application of phosphate-based geopolymer with high specific surface area

The invention provides a preparation method of a phosphate-based geopolymer with high specific surface area, which comprises the following steps: mixing fly ash and slurry powder to obtain a raw material A; and mixing an aluminum dihydrogen phosphate solution with the mass fraction of 35% with the raw material A, uniformly stirring, pouring into a mold, and curing at room temperature to obtain the phosphate-based geopolymer with the high specific surface area. The invention also provides application for heavy metal adsorbent or polluted site treatment. The phosphate-based geopolymer prepared by the invention is high in specific surface area, and is suitable for being used as a heavy metal adsorbent or polluted site treatment. 本发明提供了一种高比表面积磷酸盐基地聚合物的制备方法，该方法为：将粉煤灰和泥浆粉混合，得到原材料A；将质量分数为35％的磷酸二氢铝溶液与原材料A混合后，搅拌均匀后，倒入模具中，进行室温养护，得到高比表面积磷酸盐基地聚合物。还提供了应用，用于重金属吸附剂或污染场地处理。本发明制备的磷酸盐基地聚合物比表面面积高，适用于用作重金属吸附剂或污染场地处理。