Reduced 4-nitrophenol porous silver nanoparticle catalyst and preparation and application thereof

The invention discloses a reduced 4-nitrophenol porous silver nanoparticle catalyst and preparation and application thereof.The preparation method comprises the steps that S1, DVB serves as a raw material, AIBN serves as an initiator, and Poros PDVB is obtained; s2, adding the Poros PDVB into a nitric acid mixed solution, so as to obtain Poros PDVB-NO2 (Poros PDVB-NO2); s3, adding a product obtained in S2 and SnCl2 into concentrated hydrochloric acid, so as to obtain Poros PDVB-NH2 (Poros PDVB-NH2); s4, mixing a product obtained in S3 with 2-formyl pyridine, and carrying out heating reflux, so as to obtain Poros PDVB-PA; and S5, heating the alcoholic solution of Porous PDVB-PA, adding AgNO3, carrying out rotary evaporation, washing to obtain a precipitate, mixing the precipitate with a reducing agent, stirring, and removing impurities to obtain the product. The problems of AgNPs self-aggregation and low Ag loading are solved, and the efficiency of catalyzing sodium borohydride to reduce 4-NP is high. 本发明公开一种还