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. 2019 Nov 11;9:16496. doi: 10.1038/s41598-019-53001-y

Figure 4.

Figure 4

The digital photos of the samples before and after 30 min ultrasound ((a) initial bamboo, (b) TiO2-bamboo, (c) TiO2/PDA-bamboo, d: Ag/TiO2/PDA-bamboo) and UV-vis absorption spectrum of the solutions from the ultrasonic process.