A heterostructured TiO₂–C₃N₄support for gold catalysts: a superior preferential oxidation of CO in the presence of H₂under visible light irradiation and without visible light irradiation

Abstract

Introducing C3N4 into Au/TiO2 promotes an increase in the electron densities of Au, resulting in the activation of CO and O2.

X-ray Photoelectron Spectra of Ag-Au Colloidal Nanoparticles after Interaction with Linear Carbon Chains

“…A similar picture could be seen in Au 4f spectra (Figure 5b) where the presence of a low energy band could be associated with Au and C atoms interaction because the similar peaks were observed in the Au 4f spectra of Au@LCC [43]. The lower-energy shift of Au 4f peak position is a known for metal nanoparticles (including Au) on various substrates [44][45][46][47] due to strong metal-substrate interactions. It should be noted that some authors refer to the low-energy shift to negatively charged gold atoms organized in clusters [48].…”

Recent advances in syntheses, properties and applications of TiO2nanostructures

“…TiO 2 -C 3 N 4 microspheres were prepared and then decorated with gold nanoparticles by letting HAuCl reaction at alkaline pH (pH ¼ 10) in the attendance of sodium carbonate. Aer 2 h, the dried and washed powder was calcinated at 350 C. 306 Besides, visible light dynamic silver modied titania catalyst was described for the utilization in the decomposition of MeOH, CH 3 COOH, 2-PrOH and Escherichia coli. 307 A plasmonic gold silver alloy on TiO 2 photocatalyst was also described that indicated elevated degradation of stearic acid at 490 nm than reported using pristine TiO 2 .…”

Visible-Light-Active TiO2-Based Hybrid Nanocatalysts for Environmental Applications

“…Then, the TiO 2 -C 3 N 4 microspheres have been decorated with Au nanoparticles by letting HAuCl 4 react at alkaline pH (pH = 10) in the presence of Na 2 CO 3 . After washing and drying overnight, the powder has been calcinated at 350 • C for 2 h to obtain the catalysts [99]. [98].…”