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(A) The survey; (B) The effects of the AuNPs functionalization on the TiO2 (shifts of the Ti 2p peaks); (C) Confirmation of the AuNPs presence (Au 4f) and the peak fitting; (D) The XPS peak fitting of Ti 2p for pure TiO2 samples; (E) The XPS peak fitting of Ti 2p for samples with TiO2 and dithiodibutyric acid linker; (F) The XPS peak fitting of Ti 2p for samples with AuNPs attached to the TiO2 via the linker.
