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. Author manuscript; available in PMC: 2021 Dec 1.
Published in final edited form as: Catal Today. 2020 Jan 20;358:246–253. doi: 10.1016/j.cattod.2020.01.023

Table 2.

Atomic ratios of PU sponge and AuNP/Sponge surfaces.

Sample C (At.%) O (At.%) Au (At.%)
PU sponge 72.69 27.31 0
10AuNP/Sponge 61.86 35.28 2.86
40AuNP/Sponge 69.48 27.46 3.06