Photocatalytic activity of mont-La (6%)-Cu0.6Cd0.4S catalyst for phenol degradation under near UV visible light irradiation

Boukhatem, Horiya; Khalaf, Hussein; Djouadi, Lila; Gonzalez, F.V.; Navarro, R.M.; Santaballa, J. Arturo; Canle, Moisés

doi:10.1016/j.apcatb.2017.03.074

Cited by 51 publications

(14 citation statements)

References 80 publications

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“…The concentration of O 2 was routinely tested on the water used, and it was according to the expected solubility at the experimental temperature. All photocatalyst suspensions were allowed to equilibrate in the dark for 30 min as we know from our previous work that this time is sufficient to allow the establishment of the adsorption-desorption equilibrium [25].…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO2

Belekbir¹,

Azzouzi²,

Hamidi³

et al. 2020

Nanomaterials

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Photocatalyzed degradation of phenol in aqueous solution over surface impregnated TiO2 (M = Cu, Cr, V) under UV-Vis (366 nm) and UV (254 nm) irradiation is described. Nanosized photocatalyts were prepared from TiO2-P25 by wet impregnation, and characterized by X-ray diffraction, X-ray fluorescence, transmission electron microscopy, UV-Vis diffuse reflectance spectroscopy, Raman spectroscopy, and adsorption studies. No oxide phases of the metal dopants were found, although their presence in the TiO2-P25 lattice induces tensile strain in Cu-impregnated TiO2-P25, whereas compressive strain in Cr- and V-impregnated TiO2-P25. Experimental evidences support chemical and mechanical stability of the photocatalysts. Type IV N2 adsorption–desorption isotherms, with a small H3 loop near the maximum relative pressure were observed. Metal surface impregnated photocatalysts are mesoporous with a similar surface roughness, and a narrow pore distribution around ca. 25 Å. They were chemically stable, showing no metal lixiviation. Their photocatalytic activity was followed by UV-Vis spectroscopy and HPLC–UV. A first order kinetic model appropriately fitted the experimental data. The fastest phenol degradation was obtained with M (0.1%)/TiO2-P25, the reactivity order being Cu > V >> Cr > TiO2-P25 under 366 nm irradiation, while TiO2-P25 > Cu > V > Cr, when using 254 nm radiation. TOC removal under 366 nm irradiation for 300 min showed almost quantitative mineralization for all tested materials, while 254 nm irradiation for 60 min led to maximal TOC removal (ca. 30%). Photoproducts and intermediate photoproducts were identified by HPLC–MS, and appropriate reaction pathways are proposed. The energy efficiency of the process was analysed, showing UV lamps are superior to UVA lamps, and that the efficiency of the surface impregnated catalyst varies in the order Cu > V > Cr.

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Section: Photocatalytic Activitymentioning

confidence: 99%

Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO2

Belekbir¹,

Azzouzi²,

Hamidi³

et al. 2020

Nanomaterials

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“…As ah igh-toxic organic contaminant, the degradation of phenol is carried out to evaluate the photocatalytic performance. [57,58] Figure 5A showst he photocatalytic degradation performance of phenol for Ag-MBTHs and MBTHs under AM 1.5 irradiation. The photocatalytic degradation ratio of Ag-MBTHs can be up to 100 %w ithin 2h,w hich is much higher than that of MBTHs.…”

Section: Resultsmentioning

confidence: 99%

“…As a high‐toxic organic contaminant, the degradation of phenol is carried out to evaluate the photocatalytic performance . Figure A shows the photocatalytic degradation performance of phenol for Ag‐MBTHs and MBTHs under AM 1.5 irradiation.…”

Section: Resultsmentioning

confidence: 99%

Surface Plasmon Resonance‐Enhanced Visible‐NIR‐Driven Photocatalytic and Photothermal Catalytic Performance by Ag/Mesoporous Black TiO₂ Nanotube Heterojunctions

Qiao

Sun

et al. 2018

Chemistry An Asian Journal

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Ag/mesoporousb lack TiO 2 nanotubes heterojunctions (Ag-MBTHs) were fabricatedt hrough as urfaceh ydrogenation, wet-impregnation andp hotoreduction strategy. The as-prepared Ag-MBTHs possess ar elativelyh igh specific surface area of % 85 m 2 g À1 anda na verage pore size of % 13.2 nm. The Ag-MBTHs with an arrow band gap of % 2.63 eV extendt he photoresponse from UV to the visiblelight and near-infrared( NIR) region. They exhibit excellent visible-NIR-driven photothermal catalytic and photocatalytic performance for complete conversion of nitro aromatic compounds (100 %) and mineralization of highly toxic phenol (100 %). The enhancement can be attributed to the mesoporous hollow structures increasing the light multi-refraction, the Ti 3 + in frameworks and the surfacep lasmon resonance (SPR) effect of plasmonic Ag nanoparticles favoring light-harvestinga nd spatial separation of photogenerated electronhole pairs, which is confirmed by transientf luorescence. The fabrication of this SPR-enhanced visible-NIR-driven Ag-MBTHs catalyst mayp rovide new insights for designing other high-performanceh eterojunctions as photocatalytic and photothermal catalytic nanomaterials.

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“…Bi(III) contains filled (d 10 ) orbitals, and its 6s orbitals could hybridize with the O 2p orbitals, affording a new hybridized valence band (VB). This hybridized VB narrows the band gap to permit visible-light absorption.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of visible-light-driven BiOBrxI1-x solid solution nanoplates by ultrasound-assisted hydrolysis method with tunable bandgap and superior photocatalytic activity

Meng

et al. 2018

Journal of Alloys and Compounds

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Photocatalytic activity of mont-La (6%)-Cu0.6Cd0.4S catalyst for phenol degradation under near UV visible light irradiation

Cited by 51 publications

References 80 publications

Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO2

Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO2

Surface Plasmon Resonance‐Enhanced Visible‐NIR‐Driven Photocatalytic and Photothermal Catalytic Performance by Ag/Mesoporous Black TiO₂ Nanotube Heterojunctions

Synthesis of visible-light-driven BiOBrxI1-x solid solution nanoplates by ultrasound-assisted hydrolysis method with tunable bandgap and superior photocatalytic activity

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Photocatalytic activity of mont-La (6%)-Cu0.6Cd0.4S catalyst for phenol degradation under near UV visible light irradiation

Cited by 51 publications

References 80 publications

Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO2

Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO2

Surface Plasmon Resonance‐Enhanced Visible‐NIR‐Driven Photocatalytic and Photothermal Catalytic Performance by Ag/Mesoporous Black TiO2 Nanotube Heterojunctions

Synthesis of visible-light-driven BiOBrxI1-x solid solution nanoplates by ultrasound-assisted hydrolysis method with tunable bandgap and superior photocatalytic activity

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Surface Plasmon Resonance‐Enhanced Visible‐NIR‐Driven Photocatalytic and Photothermal Catalytic Performance by Ag/Mesoporous Black TiO₂ Nanotube Heterojunctions