TiO2/MgAl layered double hydroxides mechanical mixtures as efficient photocatalysts in phenol degradation

Paredes, S.P.; Valenzuela, Miguel A.; Fetter, Geolar; Flores, S.

doi:10.1016/j.jpcs.2011.03.017

Cited by 84 publications

(28 citation statements)

References 27 publications

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“…Promoting the charge separation decreases the electron-hole recombination enhancing the photocatalytic process [60,61]. Therefore, the effect of semiconductor coupling of the detected ZnO/TiO 2 /Zn 2 TiO 4 phases most probably influences the changes in electronic properties of the synthesized nanocomposites contributing to higher photocatalytic activity when compared to ZnAl-LDH samples [62,63]. Furthermore, in correlation with the results from the FT-IR and XRD analysis, it could be concluded that low TiO 2 loadings do not suppress completely the reverse mixed oxide-LDH reaction.…”

Section: Photocatalytic Performances Of the Prepared Samplesmentioning

confidence: 99%

Solar light induced rhodamine B degradation assisted by TiO2–Zn–Al LDH based photocatalysts

Hadnadjev-Kostic

Vulic

Marinković‐Nedučin

2014

Advanced Powder Technology

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Section: Photocatalytic Performances Of the Prepared Samplesmentioning

confidence: 99%

Solar light induced rhodamine B degradation assisted by TiO2–Zn–Al LDH based photocatalysts

Hadnadjev-Kostic

Vulic

Marinković‐Nedučin

2014

Advanced Powder Technology

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“…At present, these materials are used as plastic additives and halogen scavengers at industrial scale, therefore it can be considered that they are economically feasible to be prepared. Several works are devoted to the use of LDHs, mainly containing MgAl − [13,14] or ZnAl − [15] cation pairs in the brucitic layers, as support materials for TiO 2 nanoparticles. However, up to our knowledge, there is no report on the formation of such nanocomposites in which the cationic composition is altered within the LDH sheets to create heterojunction photocatalysts with enhanced properties.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic removal of phenol and methylene-blue in aqueous media using TiO2@LDH clay nanocomposites

et al. 2015

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Please cite this article in press as: E.M. Seftel, et al., Photocatalytic removal of phenol and methylene-blue in aqueous media using TiO 2 @LDH clay nanocomposites, Catal. Today (2014), http://dx. a b s t r a c tHerein, we report the formation of a series of nanocomposites composed of LDH structures and TiO 2 with anatase crystal phase. The structure of the LDH clay was modulated by the insertion of different di-, trior tetravalent cations, such as Zn 2+ , Cu 2+ , Al 3+ , Fe 3+ or Ti 4+ , within the brucite-like sheets. Afterwards, the anatase seeds were deposited onto the LDH clays, obtaining new nanocomposite systems with tailored photocatalytic activity. In this way, the photoresponsive properties of the final nanocomposites were shifted from the UV to the visible range of the solar spectrum. The obtained nanocomposites were tested for the degradation of different organic pollutants, like phenol and methylene blue, under UV and visible light in aqueous media with different pH. The kinetic study showed that the TiO 2 @LDH nanocomposites are efficient for the phenol (and its intermediary species catechol and hydroquinone) and methylene blue photocatalytic degradation under both UV and Vis light illumination.

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“…Prior to irradiation, the suspensions were stirred for 30 min in the dark under airflow to ensure the adsorption-desorption equilibrium on the photocatalyst surface [17,[22][23][24]. At certain time intervals, 4 ml solution was sampled and filtered through 0.45-µm Whatman membrane filter.…”

Section: Photocatalytic Experimentsmentioning

confidence: 99%

Removal of ethylenediaminetetraacetic acid and its cobalt complex by layered double hydroxide/titanium dioxide from aqueous solution

Sheha

Harb

El-sayed

et al. 2016

Desalination and Water Treatment

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A B S T R A C TTiO 2 -LDH photocatalysts as mechanical mixture (MCPC) and core-shell (CSPC) were successfully synthesized and characterized by XRD, TEM, and EDX techniques. The band gaps were determined by UV-vis diffuse reflectance. The photocatalytic efficiency of the catalysts for removal of ethylenediaminetetraacetic acid (EDTA) and its cobalt complexes (Co(II)-EDTA) was evaluated under ultraviolet (UV) irradiation. Results showed that the employed catalysts not only has higher removal efficiency for both EDTA and Co(II)-EDTA than TiO 2 , but also easily separated from the aqueous phase. Removal percentages of about 83 and 88% (for EDTA) and 71 and 81% (for Co(II)-EDTA) are achieved by MMPC and CSPC, respectively.

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TiO2/MgAl layered double hydroxides mechanical mixtures as efficient photocatalysts in phenol degradation

Cited by 84 publications

References 27 publications

Solar light induced rhodamine B degradation assisted by TiO2–Zn–Al LDH based photocatalysts

Solar light induced rhodamine B degradation assisted by TiO2–Zn–Al LDH based photocatalysts

Photocatalytic removal of phenol and methylene-blue in aqueous media using TiO2@LDH clay nanocomposites

Removal of ethylenediaminetetraacetic acid and its cobalt complex by layered double hydroxide/titanium dioxide from aqueous solution

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