Enhanced photocatalytic activity of nickel and nitrogen codoped TiO2 under sunlight

Sinhmar, Anshu; Setia, Hema; Kumar, Vivek; Sobti, Amit; Toor, Amrit Pal

doi:10.1016/j.eti.2020.100658

Cited by 30 publications

(7 citation statements)

References 27 publications

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“…There are several approaches for sensitizing TiO 2 to visible light: doping with cationic and anionic elements or metal nanoparticles. Elements of the 3d- and 2p-groups are often used as additives to reduce the value of the bandgap of the photocatalyst [ 17 , 18 ].…”

Section: Factors Affecting the Efficiency Of Photocatalysis And Tementioning

confidence: 99%

Recent Developments of TiO2-Based Photocatalysis in the Hydrogen Evolution and Photodegradation: A Review

et al. 2020

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The growth of industrialization, which is forced to use non-renewable energy sources, leads to an increase in environmental pollution. Therefore, it is necessary not only to reduce the use of fossil fuels to meet energy needs but also to replace it with cleaner fuels. Production of hydrogen by splitting water is considered one of the most promising ways to use solar energy. TiO2 is an amphoteric oxide that occurs naturally in several modifications. This review summarizes recent advances of doped TiO2-based photocatalysts used in hydrogen production and the degradation of organic pollutants in water. An intense scientific and practical interest in these processes is aroused by the fact that they aim to solve global problems of energy conservation and ecology.

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Section: Factors Affecting the Efficiency Of Photocatalysis And Tementioning

confidence: 99%

Recent Developments of TiO2-Based Photocatalysis in the Hydrogen Evolution and Photodegradation: A Review

et al. 2020

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“…Incorporation of N dopant into the TiO 2 lattice can occur at substitutional or interstitial positions, affecting electron density and charge distribution, thus leading to increased photocatalytic ability [1]. Sinhmar et al [15] prepared Ni and N codoped TiO 2 catalyst by surface impregnation method and revealed a high performance for photodegradation of phenol under visible light irradiation. It was reported that 2p states of N mixed with O 2p states lead to bandgap narrowing [16].…”

Section: ■ Introductionmentioning

confidence: 99%

Codoping Effect of Nitrogen (N) to Iron (Fe) Doped Zirconium Titanate (ZrTiO<sub>4</sub>) Composite toward Its Visible Light Responsiveness as Photocatalysts

Hayati

Kurniawan²,

Prasetyo³

et al. 2022

Indones. J. Chem.

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Iron (Fe) and nitrogen (N) were introduced as dopants into zirconium titanate (ZrTiO4) in order to study the codoping effects of nitrogen on iron-doped zirconium titanate (Fe,N-codoped ZrTiO4) composite. Titanium tetraisopropoxide (TTIP), zirconia (ZrO2), urea, and iron(II) sulfate heptahydrate were used as the source of TiO2, semiconductor supports, source of nitrogen, and iron, respectively. A specific amount of iron (1, 3, 5, 7, and 9 wt.%) and a fixed nitrogen content (10 wt.%) were doped into the ZrTiO4 lattice. Various calcination temperatures (from 500 to 900 °C) were also applied to investigate the crystal structure of the composite. The composites were characterized by X-ray powder diffractometer (XRD), Fourier-transform infrared spectrophotometer (FT-IR), scanning electron microscope with energy dispersive X-Ray spectrometer (SEM-EDX), and specular reflectance UV-Vis (SR-UV). The lowest bandgap energy of 2.62 eV was obtained in the composite with 3 wt.% of Fe and 10 wt.% of N calcined at 500 °C.

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“…Corresponding literature contains numerous successful results obtained under different irradiation sources. [3][4][5][6][7][8] TiO 2 , WO 3 , SrTiO 3 , Fe 2 O 3 , ZnO, and ZnS represent the most widely utilized photocatalysts 8 and among them, TiO 2 is the most preferred one due to its characteristic features, that is, drastic oxidation capability, high chemical and photochemical stability, long toughness, nontoxicity, low cost, and super hydrophilicity for organic pollutants. 9 However, some critical disadvantages of TiO 2 , such as, the poor absorption ability at the visible light region, 10 quick e -/h + recombination, low adsorption capacity for organic pollutants, nonuniform dispersion in the aqueous medium and the difficulties of recovering TiO 2 particles after water treatment, restrict its utilization.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of dye‐sensitized and non‐sensitized GO‐TiO₂ nanocomposites under simulated and direct sunlight

Ilhan

Cayci

Aksoy

et al. 2021

Int J Applied Ceramic Tech

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Graphene oxide (GO), amine‐modified graphene oxide (mGO), and N‐TiO2 composites were synthesized by low‐temperature hydrothermal method and characterized by using X‐ray diffraction, X‐ray photoelectron spectroscopy, FTIR, and BET analysis techniques. The films of synthesized TiO2, mGO:TiO2, N‐TiO2, GO:TiO2, GO:N‐TiO2, and commercially available P25 were prepared by doctor blade method. These films and their perylene‐3,4,9,10‐tetracarboxy tetrabutylester (PTE)‐sensitized forms were employed as photocatalysts for the photodegradation of rhodamine‐B (RhB) under Xe lamp and direct sunlight irradiations. Independent from the irradiation source, the photocatalytic order of the non‐sensitized films were GO:N‐TiO2 > GO:TiO2 > N‐TiO2 > mGO:TiO2 > TiO2 > P25, but seven and 15 folds of increments were detected under direct sunlight irradiation. PTE‐sensitized catalyst films exhibited more than two folds of increase in the photocatalytic rate constants compared to their non‐sensitized counterparts under Xe lamp irradiation. Under direct sunlight irradiation no matter which photocatalyst was used, the photocatalytic activity of these films was enhanced seven folds. Reusability tests revealed no significant changes in the photocatalytic rate constants obtained with both the non‐sensitized and sensitized films.

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Enhanced photocatalytic activity of nickel and nitrogen codoped TiO2 under sunlight

Cited by 30 publications

References 27 publications

Recent Developments of TiO2-Based Photocatalysis in the Hydrogen Evolution and Photodegradation: A Review

Recent Developments of TiO2-Based Photocatalysis in the Hydrogen Evolution and Photodegradation: A Review

Codoping Effect of Nitrogen (N) to Iron (Fe) Doped Zirconium Titanate (ZrTiO<sub>4</sub>) Composite toward Its Visible Light Responsiveness as Photocatalysts

Photocatalytic activity of dye‐sensitized and non‐sensitized GO‐TiO₂ nanocomposites under simulated and direct sunlight

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Enhanced photocatalytic activity of nickel and nitrogen codoped TiO2 under sunlight

Cited by 30 publications

References 27 publications

Recent Developments of TiO2-Based Photocatalysis in the Hydrogen Evolution and Photodegradation: A Review

Recent Developments of TiO2-Based Photocatalysis in the Hydrogen Evolution and Photodegradation: A Review

Codoping Effect of Nitrogen (N) to Iron (Fe) Doped Zirconium Titanate (ZrTiO<sub>4</sub>) Composite toward Its Visible Light Responsiveness as Photocatalysts

Photocatalytic activity of dye‐sensitized and non‐sensitized GO‐TiO2 nanocomposites under simulated and direct sunlight

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Photocatalytic activity of dye‐sensitized and non‐sensitized GO‐TiO₂ nanocomposites under simulated and direct sunlight