Photocatalytic degradation of malachite green dye using nitrogen/sodium/iron-TiO2 nanocatalysts

Amigun, Azeezah Taiwo; Adekola, F.A.; Tijani, Jimoh Oladejo; Mustapha, S.

doi:10.1016/j.rechem.2022.100480

Cited by 22 publications

(1 citation statement)

References 51 publications

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“…Malgheet al reported that photocatalyst co-doped with C and 2.01 wt% Fe shows the excellent photocatalytic activity and degradation efficiency was improved by 78% under visible light irradiation [40]. Maximum MG degradation (96.57%) was obtained using N/Na/Fe tri-doped TiO 2 nanocatalyst under optimum experimental conditions of 0.11 g catalyst dosage, 25.83 min reaction time by Mustapha et al [41].…”

Section: Bet Gas Sorption Analysismentioning

confidence: 96%

Highly effective Fe-doped TiO₂ nanoparticles for removal of toxic organic dyes under visible light illumination

Rahman¹,

Kar²,

Chen³

2023

Nanotechnology

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This article addresses the synthesis of Fe3+ doped TiO2 nanoparticles with variations of molar concentrations of Fe3+ and their adequate use as potential photocatalysts for Photocatalysis applications. Synthesized photocatalysts were characterized thoroughly by different analytical techniques in terms of morphological, chemical, structural, crystalline, optical, electronic structure, surface area etc. properties. The occurrence of red shift phenomenon of the energy band gap attributes to the transfer of charges and transition between the d electrons of dopant and CB or VB of TiO2. The doping of Fe3+ ions generates more trap sites for charge carriers with the surface trap sites. Thorough experimental conclusions revealed that the Fe3+ ions necessarily regulate the catalytic property of TiO2nanomaterial. The obtained total degradation efficiency rate of Methylene Blue (MB) was 93.3% in the presence of 0.1M Fe3+ in the host material and for Malachite Green Oxalate (MG)the efficiency was 100% in the presence of 0.05M and 0.1M Fe3+in the host material. In both the cases the total visible light irradiation time was 90 min. The adsorption properties of the photocatalysts have been also performed in a dark for 90 minutes in the presence of MB dye. However, till now there are hardly reported photocatalysts which shows complete degradation of these toxic organic dyes by visible light driven photocatalysis. of potential values of valence and conduction band shows the production of active oxidizing species for hydrogen yield and the possible mechanism ofthe Schottky barrier has been proposed. A schematic diagram of visible light driven Photocatalysis has been pictured showing degradation activity of Fe3+-TiO2 catalysts sample.

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Section: Bet Gas Sorption Analysismentioning

confidence: 96%

Highly effective Fe-doped TiO₂ nanoparticles for removal of toxic organic dyes under visible light illumination

Rahman¹,

Kar²,

Chen³

2023

Nanotechnology

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Enhanced Adsorption and Photocatalytic Activity of Vertically Oriented TiO₂ Nanotube Arrays by Li Incorporation

Nair,

Rahman Edamana,

Mary Alappatt

et al. 2024

Physica Status Solidi (a)

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A highly efficient, solid, and easily maneuverable adsorbent and photocatalyst, Li‐incorporated titanate nanotubes that manifest adsorption efficiency of 98.1% and photocatalytic efficiency of 99.6% in 60 min and 97.8% and 98.5%, respectively, in a shorter duration of 20 min, is synthesized by a facile two‐stage electrochemical technique. The modified nanotubes exhibit good cyclic stability of 93.7% photodegradation of malachite green dye after three continuous cycles. The adsorption data show the highest correlation for second‐order pseudo kinetics and Freundlich isotherm, suggesting multilayer chemisorption with an adsorption capacity of kF ≈ 219.51 mg1–1/nL1/ng−1. Fourier transform infrared spectroscopy (FTIR) analysis of the adsorbent before and after the adsorption corroborates the findings. X‐Ray photoelectron spectroscopy reveals the formation of a larger number of oxygen vacancies (Ti3+/Ti2+) that facilitate more carrier release for the production of reactive oxygen species during photocatalysis. X‐Ray diffraction and transmission electron microscopy analysis confirm a secondary rutile phase formation on Li doping that promotes heterogeneous multilayer adsorption. Field‐emission spectroscopic studies reveal a change in the morphology of the doped tubes with porous aggregate formation on the surface. The structural, morphological, and compositional change brought about by Li incorporation facilitates the use of titania nanotubes as an efficient adsorbent cum photocatalyst in the removal of malachite green dye.

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Optimization of enhanced UV photodegradation of Malachite Green using sediment@TiO2 composite

El Mrabet,

Fahoul,

Belghiti

et al. 2024

Reac Kinet Mech Cat

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Photocatalytic degradation of malachite green dye using nitrogen/sodium/iron-TiO2 nanocatalysts

Cited by 22 publications

References 51 publications

Highly effective Fe-doped TiO₂ nanoparticles for removal of toxic organic dyes under visible light illumination

Highly effective Fe-doped TiO₂ nanoparticles for removal of toxic organic dyes under visible light illumination

Enhanced Adsorption and Photocatalytic Activity of Vertically Oriented TiO₂ Nanotube Arrays by Li Incorporation

Optimization of enhanced UV photodegradation of Malachite Green using sediment@TiO2 composite

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Photocatalytic degradation of malachite green dye using nitrogen/sodium/iron-TiO2 nanocatalysts

Cited by 22 publications

References 51 publications

Highly effective Fe-doped TiO2 nanoparticles for removal of toxic organic dyes under visible light illumination

Highly effective Fe-doped TiO2 nanoparticles for removal of toxic organic dyes under visible light illumination

Enhanced Adsorption and Photocatalytic Activity of Vertically Oriented TiO2 Nanotube Arrays by Li Incorporation

Optimization of enhanced UV photodegradation of Malachite Green using sediment@TiO2 composite

Contact Info

Product

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About

Highly effective Fe-doped TiO₂ nanoparticles for removal of toxic organic dyes under visible light illumination

Highly effective Fe-doped TiO₂ nanoparticles for removal of toxic organic dyes under visible light illumination

Enhanced Adsorption and Photocatalytic Activity of Vertically Oriented TiO₂ Nanotube Arrays by Li Incorporation