Low-temperature S-doping on N-doped TiO2 films and remarkable enhancement on visible-light performance

Yan, Jing; Zhao, Jianhua; Líu, Hao; Hu, Yifei; Liu, Tongyang; Guan, Sujun; Zhao, Qian; Zhu, Zheng; Lu, Yun

doi:10.1016/j.materresbull.2019.110594

Cited by 21 publications

(7 citation statements)

References 45 publications

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“…The peak at around 169 eV was attributed to S 6+ . 40,41 Compared with the TiS3 sample, the S 2p peak of VWTiS3 shifted to the higher binding energy, indicating that the electron cloud density decreased. The research confirmed that the WO 3 species could improve the electron transfer from the support to V 2 O 5 .…”

Section: Dft Calculationmentioning

confidence: 99%

Promotional Effect of S Doping on V₂O₅–WO₃/TiO₂ Catalysts for Low-Temperature NO_x Reduction with NH₃

Chen

Wan

et al. 2020

Ind. Eng. Chem. Res.

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In this study, we described a novel S-doped V2O5–WO3/TiO2 (VWTiS) catalyst that showed superior low-temperature NH3-selective catalytic reduction (SCR) activity in comparison with the VWTi catalyst. These catalysts were extensively studied by a series of characterizations and density functional theory (DFT) calculations. Results revealed that the impregnated WO3 and V2O5 species were preferentially interacting with the doped S site, which improved the electron transfer from WO3 to V2O5 and promoted the formation of reduced vanadium species. The reduced vanadium could induce large amounts of superoxide ions, which was proved as important species for NO x reduction by a benzoquinone experiment. Finally, in situ diffuse reflectance infrared Fourier transform (DRIFT) showed that S doping could promote the adsorption and activation of NH3 and NO on the VWTiS catalyst simultaneously; thus, the VWTiS catalyst exhibited superior SCR catalytic activity at low temperatures.

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Section: Dft Calculationmentioning

confidence: 99%

Promotional Effect of S Doping on V₂O₅–WO₃/TiO₂ Catalysts for Low-Temperature NO_x Reduction with NH₃

Chen

Wan

et al. 2020

Ind. Eng. Chem. Res.

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“…Co-doped nanoparticles exhibit higher visible light absorption than single doped TiO 2 due to a synergistic effect between the two dopants, which can efficiently increase the photocatalytic performance [150]. Co-doping can be divided into different metal elements co-doping [151][152][153], metal elements and non-metal elements doping [154][155][156] and different non-metal elements doping [157][158][159]. As shown in Table 2, many researchers have used co-doping method to modify TiO 2 and tested the photocatalytic performance of the materials.…”

Section: Different Elements Co-doping Tiomentioning

confidence: 99%

Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review

Zhou

2020

Catalysts

167

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A high-efficiency method to deal with pollutants must be found because environmental problems are becoming more serious. Photocatalytic oxidation technology as the environmentally-friendly treatment method can completely oxidate organic pollutants into pollution-free small-molecule inorganic substances without causing secondary pollution. As a widely used photocatalyst, titanium dioxide (TiO2) can greatly improve the degradation efficiency of pollutants, but several problems are noted in its practical application. TiO2 modified by different materials has received extensive attention in the field of photocatalysis because of its excellent physical and chemical properties compared with pure TiO2. In this review, we discuss the use of different materials for TiO2 modification, highlighting recent developments in the synthesis and application of TiO2 composites using different materials. Materials discussed in the article can be divided into nonmetallic and metallic. Mechanisms of how to improve catalytic performance of TiO2 after modification are discussed, and the future development of modified TiO2 is prospected.

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“…TiO 2 is recognized as an excellent photocatalyst, but due to its relatively high band gap energy of 3.2 eV for the anatase phase and 3.03 eV for the rutile phase, it can only be used when irradiated with UV radiation λ < 387 nm, which makes up only 3-5% of the total naturally occurring solar radiation [6,8,[10][11][12]. In order to extend the photocatalytic activity of TiO 2 into the visible range of electromagnetic radiation, it is often doped with non-metals (N, S, C, H) [13,14], noble metals (Ag, Au, Pt) [15], transition metals (Ce, Fe) [16], modified with metal semiconductors, co-doped with metals and non-metals, etc. [8,10,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Properties of Sol-Gel Ce-TiO2 Films

Ćurković,

Briševac,

Ljubas

et al. 2024

Processes

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In this study, nanostructured cerium-doped TiO2 (Ce-TiO2) films with the addition of different amounts of cerium (0.00, 0.08, 0.40, 0.80, 2.40, and 4.10 wt.%) were deposited on a borosilicate glass substrate by the flow coating sol-gel process. After flow coating, the deposited films were dried at a temperature of 100 °C for 1 h, followed by calcination at a temperature of 450 °C for 2 h. For the characterization of sol-gel TiO2 films, the following analytic techniques were used: X-ray diffraction (XRD), differential thermal analysis (DTA), thermal gravimetry (TG), differential scanning calorimetry (DSC), diffuse reflectance spectroscopy (DRS), and energy dispersive X-ray spectroscopy (EDS). Sol-gel-derived Ce-TiO2 films were used for photocatalytic degradation of ciprofloxacin (CIP). The influence of the amount of Ce in TiO2 films, the duration of the photocatalytic decomposition, and the irradiation type (UV-A and simulated solar light) on the CIP degradation were monitored. Kinetics parameters (reaction kinetics constants and the half-life) of the CIP degradation, as well as photocatalytic degradation efficiency, were determined. The best photocatalytic activity was achieved by the TiO2 film doped with 0.08 wt.% Ce, under both UV-A and solar irradiation. The immobilized catalyst was successfully reused for three cycles under solar light simulator radiation, with changes in photocatalytic efficiency below 3%.

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Low-temperature S-doping on N-doped TiO2 films and remarkable enhancement on visible-light performance

Cited by 21 publications

References 45 publications

Promotional Effect of S Doping on V₂O₅–WO₃/TiO₂ Catalysts for Low-Temperature NO_x Reduction with NH₃

Promotional Effect of S Doping on V₂O₅–WO₃/TiO₂ Catalysts for Low-Temperature NO_x Reduction with NH₃

Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review

Synthesis, Characterization, and Photocatalytic Properties of Sol-Gel Ce-TiO2 Films

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Low-temperature S-doping on N-doped TiO2 films and remarkable enhancement on visible-light performance

Cited by 21 publications

References 45 publications

Promotional Effect of S Doping on V2O5–WO3/TiO2 Catalysts for Low-Temperature NOx Reduction with NH3

Promotional Effect of S Doping on V2O5–WO3/TiO2 Catalysts for Low-Temperature NOx Reduction with NH3

Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review

Synthesis, Characterization, and Photocatalytic Properties of Sol-Gel Ce-TiO2 Films

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Promotional Effect of S Doping on V₂O₅–WO₃/TiO₂ Catalysts for Low-Temperature NO_x Reduction with NH₃

Promotional Effect of S Doping on V₂O₅–WO₃/TiO₂ Catalysts for Low-Temperature NO_x Reduction with NH₃