Enhanced visible-light photocatalytic activity of carbonate-doped anatase TiO2 based on the electron-withdrawing bidentate carboxylate linkage

Abstract

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Bidentate carboxylate linked TiO2 with NH2-MIL-101(Fe) photocatalyst: a conjugation effect platform for high photocatalytic activity under visible light irradiation

“…The electron density around the Ti ions coordinated with bidentate carboxylate could be decreased due to the existence of the strong electron-withdrawing bidentate carboxylate ligands, which increased the binding energy of Ti 2p, corresponding to Ti2p 3/2 peaks at 459.2 eV. However, the pure TiO 2 nanospheres without carboxylate ligands, the electron density around the Ti cation was not influenced; thereby the corresponding Ti 2p 3/2 characteristic peaks were shifted to lower energy (458.7 eV) [54]. Meanwhile, the peak located at 463.6 eV in TiO 2 was attributed to Ti 3+ ions.…”

Steering photoinduced charge kinetics via anionic group doping in Bi2MoO6 for efficient photocatalytic removal of water organic pollutants

“…The former peak belongs to the adventitious carbon from the instrument. 14 The latter two peaks are assigned to C-OH and C-OOH bond, 51,52 respectively, which further conrms the presence of carbonate aer doping. The absence of band at 283.1 eV excludes a Bi-C bond formation or carbon doping.…”

Facile synthesis of multi-type carbon doped and modified nano-TiO2 for enhanced visible-light photocatalysis

“…Finally, the carbon species possess multiple functions, containing reducing the bandgap, promoting the separation of photogenerated charge carriers, and inducing the visible-light activity of TiO 2 through photosensitization. 15 Therefore, the carbon doping and carbon modication of nano-TiO 2 have been widely investigated in recent years with different synthesis strategies and diversied perspectives. 13,[16][17][18][19][20] Nevertheless, due to the diversity of the carbon species, [21][22][23] an in-depth understanding of the structure of carbon species and the synergistic promotion of the photocatalytic activity of nano-TiO 2 by multi-type carbon species is still decient.…”