Figure 5From: Effect of fluid shear stress on catalytic activity of biopalladium nanoparticles produced by Klebsiella Pneumoniae ECU-15 on Cr(VI) reduction reactionTEM photo of bioPd(0) at different standing time in the extending reduction process. TEM photo of bioPd(0) collected at a standing time of 6 h (a,c) and collected immediately (b,d) in the extending reduction process.Back to article page