N-Doped TiO2 Prepared from Microwave-Assisted Titanate Nanotubes (NaxH2−xTi3O7): The Effect of Microwave Irradiation during TNT Synthesis on the Visible Light Photoactivity of N-Doped TiO2

Ou, Hsin-Hung; Lo, Shang‐Lien; Liao, Che‐Wei

doi:10.1021/jp1076005

Cited by 68 publications

(33 citation statements)

References 61 publications

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“…4(b), the N 1s spectrum of N-TTO-6-2 can be fitted into two peaks. According to the previous reports, the peak with a lower binding energy at 397.9 eV is arisen from the substitution of nitrogen for oxygen in the form of O Ti N linkages due to N atoms being bonded to Ti atoms and replacing lattice oxygen atoms in TiO 2 [44,45]. The peak with a higher binding energy of 399.9 eV can be ascribed to oxidized states, such as Ti O N· · ·Ti and Ti N O· · ·Ti linkages [46][47][48].…”

Section: Xps Studiesmentioning

confidence: 88%

N-doped Na2Ti6O13@TiO2 core–shell nanobelts with exposed {1 0 1} anatase facets and enhanced visible light photocatalytic performance

Liu

Sun

et al. 2015

Applied Catalysis B: Environmental

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Section: Xps Studiesmentioning

confidence: 88%

N-doped Na2Ti6O13@TiO2 core–shell nanobelts with exposed {1 0 1} anatase facets and enhanced visible light photocatalytic performance

Liu

Sun

et al. 2015

Applied Catalysis B: Environmental

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“…XPS analysis allows understanding whether the doped nitrogen was incorporated into the TiO 2 structure as substitutional or interstitial [21,50]. The typical binding energy peaks from N 1s are in the range of 396-404 eV for N-TiO 2 [50,58,65]. The peaks observed at binding energies between 396-397 eV were attributed to substitutional nitrogen, while peaks between 400-406 eV were related to interstitial nitrogen [13,21,49,50].…”

Section: Effect Of Nitrogen Incorporationmentioning

confidence: 99%

N–TiO2 Photocatalysts: A Review of Their Characteristics and Capacity for Emerging Contaminants Removal

Gomes

Lincho

Domingues

et al. 2019

Water

142

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Titanium dioxide is the most used photocatalyst in wastewater treatment; its semiconductor capacity allows the indirect production of reactive oxidative species. The main drawback of the application of TiO2 is related to its high band-gap energy. The nonmetal that is most often used as the doping element is nitrogen, which is due to its capacity to reduce the band-gap energy at low preparation costs. There are multiple and assorted methods of preparation. The main advantages and disadvantages of a wide range of preparation methods were discussed in this paper. Different sources of N were also analyzed, and their individual impact on the characteristics of N–TiO2 was assessed. The core of this paper was focused on the large spectrum of analytical techniques to detect modifications in the TiO2 structure from the incorporation of N. The effect of N–TiO2 co-doping was also analyzed, as well as the main characteristics that are relevant to the performance of the catalyst, such as its particle size, surface area, quantum size effect, crystalline phases, and the hydrophilicity of the catalyst surface. Powder is the most used form of N–TiO2, but the economic benefits and applications involving continuous reactors were also analyzed with supported N–TiO2. Moreover, the degradation of contaminants emerging from water and wastewater using N–TiO2 and co-doped TiO2 was also discussed.

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“…The main O 1s peak is attributed to oxygen in TiO 2 matrix (Ti-O-Ti), while the shoulder (at higher binding energy 531.7 eV) is assigned to mixed contributions from surface hydroxides (OH) and carbon oxide compounds, at film surface [78]. N 1s core level for N-TiO 2 shows a double peak (396.3 and 393.8 eV), indicative of two different N environments.…”

Section: Resultsmentioning

confidence: 99%

Photonic Band Gap and Bactericide Performance of Amorphous Sol-Gel Titania: An Alternative to Crystalline TiO2

et al. 2018

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In addition to its traditional application in white pigments, nanocrystalline titania (TiO2) has optoelectronic and photocatalytic properties (strongly dependent on crystallinity, particle size, and surface structure) that grant this naturally occurring oxide new technological applications. Sol-gel is one of the most widely used methods to synthesize TiO2 films and NPs, but the products obtained (mostly oxy-hydrated amorphous phases) require severe heat-treatments to promote crystallization, in which control over size and shape is difficult to achieve. In this work, we obtained new photocatalytic materials based on amorphous titania and measured their electronic band gap. Two case studies are reported that show the enormous potential of amorphous titania as bactericide or photocatalyst. In the first, amorphous sol-gel TiO2 thin films doped with N (TiO2−xNx, x = 0.75) were designed to exhibit a photonic band gap in the visible region. The identification of Ti-O-N and N-Ti-O bindings was achieved by XPS. The photonic band gaps were found to be 3.18 eV for a-TiO2 and 2.99 eV for N-doped a-TiO2. In the second study, amorphous titania and amine-functionalized amorphous titania nanoparticles were synthetized using a novel base-catalysed sol-gel methodology. All the synthesized amorphous TiO2 nanoparticles exhibit bactericide performance (E. coli, ASTME 2149-13).

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N-Doped TiO₂ Prepared from Microwave-Assisted Titanate Nanotubes (Na_xH_2−xTi₃O₇): The Effect of Microwave Irradiation during TNT Synthesis on the Visible Light Photoactivity of N-Doped TiO₂

Cited by 68 publications

References 61 publications

N-doped Na2Ti6O13@TiO2 core–shell nanobelts with exposed {1 0 1} anatase facets and enhanced visible light photocatalytic performance

N-doped Na2Ti6O13@TiO2 core–shell nanobelts with exposed {1 0 1} anatase facets and enhanced visible light photocatalytic performance

N–TiO2 Photocatalysts: A Review of Their Characteristics and Capacity for Emerging Contaminants Removal

Photonic Band Gap and Bactericide Performance of Amorphous Sol-Gel Titania: An Alternative to Crystalline TiO2

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