A novel approach for the preparation of silver nanoparticles supported on titanate nanotubes and bentonite-application in the synthesis of heterocyclic compound derivatives

Ameur, Nawal; Ferouani, Ghaniya; Belkadi, Zakaria; Bachir, Redouane; Calvino, José J.; Hakkoum, Abdekader

doi:10.1088/2053-1591/ab5734

Cited by 22 publications

(27 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The particles have typically the same size with important porosity which is related to the hollow structure of nanotubes having a very high amount of pores; in their structure and between them. [4,42] EDS analysis shows the simultaneous presence of Ti and V confirming the presence of vanadium in all cases. The presence of Na is noticed in all samples resulting of the hydrothermal treatment with NaOH.…”

Section: Introductionmentioning

confidence: 54%

“…These values are close to those evoked in the literature varying from 0.70 nm to 1.70 nm. [4,42] Figure 3 displays the RD/UV-Vis spectra of the layered materials. All materials exhibit intense absorption at λ < 400 nm related to titanium species.…”

Section: Physicochemical Characterizationmentioning

confidence: 99%

“…All materials exhibit intense absorption at λ < 400 nm related to titanium species. [4,42,45] The presence of vanadium in the case of X%V-TiNTs materials leads a red shift of the absorbance. The red shift of absorption edge can be related to the transition of electrons from the valence band (O2p) to the t2 g level of V3d orbit as the radius of V is comparatively smaller than Ti (0.059 and 0.068 nm, respectively) which makes the Ti and O distance less important.…”

Section: Physicochemical Characterizationmentioning

confidence: 99%

“…TiNTs exhibited an intense absorption band centered at 630 cm À 1 generated by the vibration of TiÀ OÀ Ti bond. [4,42] The four-fold coordination of TiÀ O appeared at 937 cm À 1 . [4,42] On the other hand, the broad peaks observed in the interval 1200-1600 cm À 1 are assigned to the bending mode of OÀ H bond of adsorbed water.…”

Section: Physicochemical Characterizationmentioning

confidence: 99%

See 3 more Smart Citations

Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Ameur

Brahimi²,

Bensaada³

et al. 2020

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

The present work aims to study the anticorrosion and the photodegradation properties of titanate nanotubes (TiNTs) and vanadium doped-titanate nanotubes (V-TiNTs). Moreover, this article seeks to investigate the effect of doping TiNTs by vanadium species at different amount (2, 5 and 10 wt %). The raw materials (i.e:TiO 2 and V 2 O 5-TiO 2) are obtained by a sol gel process, while the hydrothermal treatment is chosen to achieve the hollow structure. The structural evolutions and morphological characteristics of materials have performed using various techniques such as: Scanning Electron Microscopy and Energy Dispersive X-ray (MEB/EDS), X-ray diffraction (XRD), UV-Visible in Reflection Diffuse spectroscopy (RD/UV-Vis) and Fourier Transform InfraRed spectroscopy (FTIR) analysis. However , the anticorrosion properties of the synthesized nanotubes are evaluated on mild steel corrosion in 1 N HCl using a weight loss method. All materials showed a potential inhibitor effect (up to 90 %) depending on the vanadium percentage and the inhibitor concentration. The photodegradation activity of the prepared materials is evaluated in the photodegradation of two organic pollutants: Methylene Blue (MB) and Malachite Green (MG) under UV-Visible irradiation. The obtained results underlined the improvement of photocatalytic activity of TiNTs by vanadium species. A conversion rate up to 96 % is achieved at reduced time. Therefore, the prepared materials could be suitable for the anticorrosion of mild steel and the photodegradation of organic pollutants.

show abstract

Section: Introductionmentioning

confidence: 54%

Section: Physicochemical Characterizationmentioning

confidence: 99%

Section: Physicochemical Characterizationmentioning

confidence: 99%

Section: Physicochemical Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Ameur

Brahimi²,

Bensaada³

et al. 2020

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

show abstract

“…After silver deposition, the presence of TiO 2 bands with a slight shift compared to the undoped‐support has observed (Figure ), which can be related to the metal‐support interactions . The clusters Ag n (1<n<10) appear generally in the zone 387–453 nm.…”

Section: Resultsmentioning

confidence: 99%

Efficient Photocatalytic Degradation of Ibuprofen under Visible Light Irradiation Using Silver and Cerium Co‐Doped Mesoporous TiO₂

2020

View full text Add to dashboard Cite

Water contamination by pharmaceutical compounds has become one of the most serious problem for environment. The use of solar illumination as a renewable energy associated to nanomaterials is an alternative solution for disinfection of wastewater. Therefore, there is a great challenge in green chemistry research to synthesize robust and efficient catalysts for the degradation of organic pollutant under visible light. In this study, we describe new ways to decorated mesoporous TiO 2 with cerium (Ce) and silver (Ag) nanoparticles. Indeed, mesoporous TiO 2 was co-doped with Ag and Ce using two different methods: co-impregnation (Co-IMP) and co-deposition precipitation with urea (Co-DPU). The prepared catalysts were characterized using different analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), diffuse reflectance spectroscopy (DR/UV-vis) and N 2 adsorption/desorption. The effect of the preparation method has been evaluated in the photodegradation of ibuprofen (IBP) under visible light irradiation. The obtained results underlined the improvement of photocatalytic activity of mesoporous TiO 2 by metals under visible light. A mineralization of IBP up to 98 % was achieved after 4 h irradiation for the catalyst prepared by co-deposition precipitation with urea. Therefore, this catalyst could be suitable for the treatment of pharmaceuticals in aqueous media using solar light as the energy source.

show abstract

Preparation of Nanocatalysts Using Deposition Precipitation with Urea: Mechanism, Advantages and Results

2022

View full text Add to dashboard Cite

The main works carried out on precipitation deposition with urea (DPU) are summarized. This method is widely applied and considered as excellent for the preparation of catalysts. It proved to be the optimum technique, e.g., in view of deposition yield, total reduced particle size, high particle distribution, and metal‐support interaction. The influence of several parameters on the DPU process, such as the effect of temperature during deposition, maturation time, annealing manner of the final powder, metal and the urea concentrations and others, are discussed. The main steps of the DPU, the preparation of monometallic catalysts by this variant, and the bimetallic catalysts obtained by co‐deposition precipitation with urea (CO‐DPU) are described.

show abstract

A novel approach for the preparation of silver nanoparticles supported on titanate nanotubes and bentonite-application in the synthesis of heterocyclic compound derivatives

Cited by 22 publications

References 77 publications

Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Efficient Photocatalytic Degradation of Ibuprofen under Visible Light Irradiation Using Silver and Cerium Co‐Doped Mesoporous TiO₂

Preparation of Nanocatalysts Using Deposition Precipitation with Urea: Mechanism, Advantages and Results

Contact Info

Product

Resources

About

A novel approach for the preparation of silver nanoparticles supported on titanate nanotubes and bentonite-application in the synthesis of heterocyclic compound derivatives

Cited by 22 publications

References 77 publications

Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Efficient Photocatalytic Degradation of Ibuprofen under Visible Light Irradiation Using Silver and Cerium Co‐Doped Mesoporous TiO2

Preparation of Nanocatalysts Using Deposition Precipitation with Urea: Mechanism, Advantages and Results

Contact Info

Product

Resources

About

Efficient Photocatalytic Degradation of Ibuprofen under Visible Light Irradiation Using Silver and Cerium Co‐Doped Mesoporous TiO₂