Shanghai Jiao Tong University

Kaixing Fu

Jinming Luo

Chunyu Lv

Jinjing Huang

Disclosed are a quaternized cellulose-based resin and a preparation method and application thereof. Cellulose extracted from traditional Chinese medicine waste residues is subjected to functional modification, and then grafted to a surface of chloromethylated polystyrene, so as to obtain the quaternized cellulose-based resin. The preparation method does not involve toxic reagents, is green and environment-friendly, is low in cost, and effectively prevents and controls PFAS pollution while realizing harmless treatment and resource utilization of solid wastes, thus ensuring the safety of drinking water. The quaternized cellulose-based resin comprises the chloromethylated polystyrene and the quaternized cellulose modified on the surface of the chloromethylated polystyrene. The quaternized cellulose-based resin is easy to recover, is used on a large scale, solves the problem that a powder adsorbent is difficult to recover and use on a large scale, has good stability, and effectively removes trace perfluorinated substances in drinking water.

Quaternized cellulose-based resin and preparation method and application thereof

Disclosed are a sulfur-molybdenum cluster modified MOF material and a preparation method and application thereof, and the material is prepared by taking an MOF material as a metal organic framework material, and modifying ammonium tetrathiomolybdate inside the metal organic framework material; and according to the mass percentage, the MOF material accounts for 45 wt % to 90 wt %, and a modification amount of the ammonium tetrathiomolybdate accounts for 10 wt % to 55 wt %. The ammonium tetrathiomolybdate is embedded into an MOF material framework in a solution in a form of an anion MoSfor modification. According to the invention, the MOF material is modified by the ammonium tetrathiomolybdate, and compared with an existing sulfydryl modified composite material, the modified composite material shows a higher adsorption capacity, a higher adsorption rate and a higher S atom effective utilization rate in the application of removing Hg (II) in water, and meets a wider practical application scene.

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Shanghai, China

Kaixing Fu