Fig. 1From: Natural Dissociation Ratio of Carboxyl Group Controlled Highly Dispersed Silver Nanoparticles on PSA Microspheres and Their Catalytic PerformanceSEM micrographs and the particle size distribution histograms of PSA nanospheres: a, b PSA1; c, d PSA2; e, f PSA3; g, h PSA4Back to article page