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. 2011 Aug 2;6:1579–1586. doi: 10.2147/IJN.S18765

Figure 4.

Figure 4

UV-visible absorption spectra of (A) protonated pentatitanate (H2Ti5O11 · H2O), (B) titanate after Ag+ cations exchange, (C) partial reduction of Ag+ cations from the layered space with the UV light irradiation, and (D) reduction of Ag+ cations with NaBH4 agent.