Journal ArticleDOI
INFLUENCE OF HETEROATOM DOPING OF TiO2 NANOPARTICLE ON THE RED SHIFT AND THE RELATED CATALYTIC ACTIVITY
Reads0
Chats0
TLDR
In this paper, N-doped anatase TiO2 has been prepared by thermal decomposition of Ti containing metal complexes and the light absorption onset has been shifted to the visible region by ~ 100 nm.Abstract:
N-doped anatase TiO2 has been prepared by thermal decomposition of Ti containing metal complexes. The light absorption onset has been shifted to the visible region by ~ 100 nm when compared to pure TiO2. The N environment of N-doped TiO2 has been studied by XPS and the results confirm the presence of N–Ti–O in the N-doped samples. Also, there is a shift in the binding energy values of Ti 2p3/2, and the additional peak for O 1s in N-doped TiO2 confirms the increase in the covalent nature of TiO2 during the N-doping. The photocatalytic activity of N-doped TiO2 has been studied both in the UV and visible regions and N-doped TiO2 shows higher activity than the Degussa TiO2 in the visible region.read more
Citations
More filters
Journal ArticleDOI
Characterization and photocatalytic activity of N-doped TiO2 prepared by thermal decomposition of Ti–melamine complex
TL;DR: In this paper, the phase transition of TiO 2 from anatase to rutile crystalline phase, starting at calcination temperature ≥600 ˚C, was revealed through X-ray photoelectron spectroscopy.
Journal ArticleDOI
Visible-Light-Active N-Doped TiO2 Photocatalysts: Synthesis from TiOSO4, Characterization, and Enhancement of Stability Via Surface Modification
Nikita Kovalevskiy,Dmitry A. Svintsitskiy,Svetlana V. Cherepanova,S. S. Yakushkin,Oleg N. Martyanov,S. A. Selishcheva,Evgeniy Gribov,D.V. Kozlov,D.S. Selishchev +8 more
TL;DR: In this paper , the authors describe the chemical engineering aspects for the preparation of highly active and stable nanocomposite photocatalysts based on N-doped TiO2.
Journal ArticleDOI
Photocatalytic Degradation with WO3/TiO2 Composites under UV and Visible Light
TL;DR: In this paper, the photocatalytic activity of Tungsten trioxide and titania composites was evaluated by the photodegradation of methylene blue (MB) under UV and visible light irradiation.
References
More filters
Journal ArticleDOI
Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides
TL;DR: Film and powders of TiO2-x Nx have revealed an improvement over titanium dioxide (TiO2) under visible light in optical absorption and photocatalytic activity such as photodegradations of methylene blue and gaseous acetaldehyde and hydrophilicity of the film surface.
Journal ArticleDOI
Titanium nitride oxidation chemistry: An x‐ray photoelectron spectroscopy study
TL;DR: In this paper, x-ray photoelectron spectroscopy was used to investigate the oxidation mechanisms at 350°C during this initiation time period, and the oxide thickness increases slowly with oxidation time and the film appears to change from an amorphous TiO2 layer to a crystalline TiO 2 layer.
Journal ArticleDOI
The preparation, characterization, and their photocatalytic activities of rare-earth-doped TiO2 nanoparticles
An-Wu Xu,Yuan Gao,Han-Qin Liu +2 more
TL;DR: In this article, rare earth (RE=La3+, Ce3+, Er3+, Pr3+, Gd3+-doped, Nd3+, Sm3+, Nd4+, Sm5+ and Sm6+ were used as precursors for the synthesis of RE/TiO2 photocatalysts, which were characterized by XRD, IR, UV-vis diffuse reflection and transient absorption spectra.
Journal ArticleDOI
Photocatalytic Activity of S-doped TiO2 Photocatalyst under Visible Light
TL;DR: In this paper, S-doped TiO2 particles were used for degradation of methylene blue in aqueous solution under irradiation at wavelengths longer than 440 nm, and the oxidation state of the S atoms incorporated into the particles was determined to be S6+ from the XPS spectra.
Journal ArticleDOI
Photocatalytic activity of NOx-doped TiO2 in the visible light region
TL;DR: The spectral sensitization of TiO2 in this case was concluded to be due to NOx impurity which was formed from NF4OH used in the preparation of titanium hydroxide as mentioned in this paper.