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. 2017 Mar 13;7:44330. doi: 10.1038/srep44330

Figure 3. Properties of AuNPs coated with PVP.

Figure 3

(a) Decomposition of hydrogen peroxide by different sizes of Au@PVP (12.5 μg/mL). Degradation of hydrogen peroxide (25 mM) was monitored by measuring absorbance at 240 nm in 20 mM borate buffer (pH 9.5) for 3 hrs. *Indicates p < 0.01 versus Control (two-tailed Student’s t test). (b) Hydrogen peroxide degradation with time at varying amounts of Au@PVP. (c) Generation of oxygen bubbles as a reaction product. (d) Hydrogen peroxide (25 mM) degradation by Au@PVP for 3 hrs at varying pHs. Standard deviations are expressed by error bars.