Rondorfite-type structure—XPS and UV–vis study

Dealloying induced plasmonic Au nanoparticle modified mesoporous TiO2 for enhanced visible light photocatalysis

“…In addition, the weak signal of Cl − ions exhibits two peaks at 199.9 and 201.3 eV for Cl 2p 3/2 and Cl 2p 1/2 , respectively. 37,38 Cl − ions may be adsorbed on the Au/ H-titanate samples after acid treatment in the HCl solution. 39,40 The absorbed Cl − ions cause the slight red-shift in the MO absorption spectrum in Fig.…”