The role of lanthanides in TiO2-based photocatalysis: A review

Mazierski, Paweł; Mikołajczyk, Alicja; Bajorowicz, Beata; Malankowska, Anna

doi:10.1016/j.apcatb.2018.04.019

Cited by 164 publications

(77 citation statements)

References 92 publications

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“…[9][10][11][12] Doping these materials with metallic impurities also signicantly inuences their properties. [13][14][15][16] Understanding of the sorption mechanisms is thus extremely important for further investigations, particularly concerning the stability of the materials in biological systems.…”

Section: Introductionmentioning

confidence: 99%

Surface protolytic property characterization of hydroxyapatite and titanium dioxide nanoparticles

et al. 2019

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We provide characterization data of hydroxyapatite (nHAp) and titanium dioxide (nTiO 2 ) nanoparticles as potential materials for ion sorption, e.g. in targeted therapy, barrier materials for waste repositories or photovoltaics. The study is focused on the determination of the values of protonation and ion exchange constants and site densities ( P SOH, P X; [mol kg À1 ]) of nTiO 2 and nHAp for further Ra kinetics and sorption experiments. These data are very important for further investigation of the materials, which can be used e.g. as drug delivery systems or in engineered barriers of deep geological repositories. The characterization was based on the evaluation of the dependence of titrating agent consumption on pH.Titration results were evaluated on the basis of several model combinations, however the combination of the Chemical Equilibrium Model (CEM) and Ion Exchange Model (IExM) fits best to the experimental titration curves. However, the differences between the two sorbents were relatively large. Due to stability in a broad pH range and available surface sites, nTiO 2 seems to have a wide application range. The applicability of nHAp is not so wide because of its dissolution under pH 5. Both sorbents are virtually able to sorb cationic species on deprotonated edge and layer sites with different capacities, which can be important for sorption and decontaminating applications.

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Section: Introductionmentioning

confidence: 99%

Surface protolytic property characterization of hydroxyapatite and titanium dioxide nanoparticles

et al. 2019

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“…The highest degradation was observed for LnOF(2)@TiO2 sample, with the efficiency reached 25.9% after 60 min. The enhanced activity is probably attributed to: (1) the presence of new states in the band gap, which products a new states in the band gap, (2) the effective separation of charge carries and (3) energy transfer from LnOF to TiO2 (Mazierski et al, 2018). Such a composite photocatalyst is promising for water purification application and environmental remediation.…”

Section: Discussionmentioning

confidence: 99%

Lanthanide organic frameworks@TiO2 nanomaterials: luminescence and highly efficient photodegradation of phenol

Parnicka¹,

Zaleska-Medynska²

2018

Special Issue Conference Abstract Book CNS 2018

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“…These trivalent ions possess energy levels with a form of stair that as a dopant in a semiconductor can emit UV or visible light, through sequential absorptions from many near-infrared photons. The transformation of light from near-infrared and visible spectra toward UV range can be used to excite band gap of the titania [13].…”

Section: Rare Earth Elements In Photocatalysismentioning

confidence: 99%

Photocatalytic Treatment of Pesticides Using TiO₂ Doped with Rare Earth

Pérez¹,

Torres²,

Romero³

et al. 2019

Water and Wastewater Treatment

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Rare earth doping ions can improve the spectral response of this semiconductor to the visible region. This work evaluated the dopant effect of rare earth ions such as La, Ce, Nd, Pr, Sm, Eu, and Gd in titania for the solar photodegradation of Diuron and methyl parathion. The increase in the content up to 0.5% of dopants decreases photoactivity due to the formation of photo-generated electron-hole pair recombination centers. The catalysts calcined at 500°C presented only the anatase crystalline phase and the samples doped with La and Ce at 0.1 and 0.3% were the most active in diuron solar degradation; however, when the temperature of the thermal treatment increased to 800°C, mixtures of crystalline phases were presented. The catalyst with the highest anatase content showed the best performance. The materials calcined at 500°C with better performance in diuron solar degradation were selected to to treat methyl parathion using solar light. Finally, under these conditions, an affinity was found for the dopant ions in titania and in the functional groups of the contaminating molecules (phenylurea and thiophosphate). Solar photodegradation of diuron was more effective with La and Ce, while for methyl parathion, it was Eu at 0.3%.

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The role of lanthanides in TiO2-based photocatalysis: A review

Cited by 164 publications

References 92 publications

Surface protolytic property characterization of hydroxyapatite and titanium dioxide nanoparticles

Surface protolytic property characterization of hydroxyapatite and titanium dioxide nanoparticles

Lanthanide organic frameworks@TiO2 nanomaterials: luminescence and highly efficient photodegradation of phenol

Photocatalytic Treatment of Pesticides Using TiO₂ Doped with Rare Earth

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The role of lanthanides in TiO2-based photocatalysis: A review

Cited by 164 publications

References 92 publications

Surface protolytic property characterization of hydroxyapatite and titanium dioxide nanoparticles

Surface protolytic property characterization of hydroxyapatite and titanium dioxide nanoparticles

Lanthanide organic frameworks@TiO2 nanomaterials: luminescence and highly efficient photodegradation of phenol

Photocatalytic Treatment of Pesticides Using TiO2 Doped with Rare Earth

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Photocatalytic Treatment of Pesticides Using TiO₂ Doped with Rare Earth