通过固相研磨法,选取具有不同中心杂原子的Keggin型多酸(H_3PW_(12)O_(40)、H_4SiW_(12)O_(40)、K_5BW_(12)O_(40))固体与硝酸银固体反应,制备得到了系列低溶解度的多酸银盐前驱体(Ag_nPOM).再以这类多酸银盐为基质,通过紫外光照,使其中部分抗衡阳离子Ag~+原位还原生成金属Ag纳米粒子,进而可获得一系列具有不同Ag纳米粒子负载量的Ag_x~0/Ag_n~IPOM复合材料.固体漫反射光谱表明,Ag纳米粒子的表面等离子体(plasmon)共振吸收导致复合材料在可见光区域的吸收明显增加.这类复合材料在可见光照射下对光催化降解甲基橙和光还原Cr(Ⅵ)展现出高效、稳定的催化活性.随着阴离子所带电荷的增加,Ag纳米粒子的负载量明显增加,可见光吸收增强,因此光催化活性越高.Ag_x~0/Ag_5~IBW_(12)O_(40)展现最佳的光催化活性. Through the solid-phase milling method, we chose Keggin polyacid (H_3PW_ (12) O_ (40), H_4SiW_ (12) O_ (40), K_5BW_ (12) O_ (40) (Ag_nPOM), a series of low-solubility polyacid silver salt precursors (Ag_nPOM) were prepared.And then Ag NPs were photocatalyzed by Ag nPOM, , And then a series of Ag_x ~ 0 / Ag_n ~ IPOM composites with different Ag nanoparticle loadings were obtained.The solid-state diffuse reflectance spectra showed that the plasmon resonance absorption of Ag nanoparticles resulted in the absorption of the composite in the visible region Obviously increased.The photocatalytic degradation of methyl orange and photocatalytic reduction of Cr (Ⅵ) by these composite materials under visible light irradiation showed high and stable catalytic activity.With the increase of the charge of anion, the loading of Ag nanoparticles increased obviously , Visible light absorption increased, so the higher the photocatalytic activity Ag_x ~ 0 / Ag_5 ~ IBW_ (12) O_ (40) showed the best photocatalytic activity.