Water vapor adsorption and photocatalytic pollutant degradation with TiO2–sepiolite nanocomposites

Karamanis, D.; Ökte, A. Neren; Vardoulakis, Ε.; Vaimakis, T.

doi:10.1016/j.clay.2010.12.012

Cited by 52 publications

(16 citation statements)

References 34 publications

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“…The average pore sizes of RS, MMS and TiO 2 /MMS are found to be 3.399, 5.681 and 1.771nm respectively, indicating that partial mesopores have changed into micropores. Similar conclusion was drawn by D. Karamanis, et al [29].…”

Section: Surface Area and Pore Volume Measurementssupporting

confidence: 90%

Synthesis, characterization of magnetic-sepiolite supported with TiO2, and the photocatalytic performance over Cr(VI) and 2,4-dichlorophenol co-existed wastewater

Dai

Gong

et al. 2015

Journal of Alloys and Compounds

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Section: Surface Area and Pore Volume Measurementssupporting

confidence: 90%

Synthesis, characterization of magnetic-sepiolite supported with TiO2, and the photocatalytic performance over Cr(VI) and 2,4-dichlorophenol co-existed wastewater

Dai

Gong

et al. 2015

Journal of Alloys and Compounds

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“…The methodology has been later on applied by other authors to organo‐palygorskites, and proven to be equally efficient. They confirm the optimized distribution of TiO 2 anatase NP on the surface of the fibers, in contrast to methodologies in which the titanium alkoxide is directly assembled to the neat fibrous clay and the resulting materials are quite heterogeneous or even show the presence of segregated phases . However, when a neutral surfactant (e. g., Triton X‐100) is present in the reaction medium it can facilitate the coupling of the formed TiO 2 NP on the surface of palygorskite fibers and may also act as structure directing agent .…”

Section: In Situ Generation Of Np In Presence Of Sepiolitementioning

confidence: 99%

Immobilization of Nanoparticles on Fibrous Clay Surfaces: Towards Promising Nanoplatforms for Advanced Functional Applications

Aranda

Ruiz‐Hitzky

2018

The Chemical Record

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This account discusses on diverse general approaches employed for the preparation of heterostructured materials based on the immobilization of metal oxides and other nanoparticles on sepiolite and palygorskite fibrous clay minerals, showing the many opportunities of application offered by the resulting materials. Various examples from our own experience have been selected to show how sepiolite acts as a convenient nanoplatform for immobilization of diverse type of nanoparticles, such as TiO , Fe O , Prussian blue, zeolites, layered double hydroxides, carbon nanotubes and graphenes, etc., to produce functional materials for applications in catalysis, environmental remediation, sensing devices, energy production, and others.

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“…Regarding the third reason, leaching experiments in a w orst case scenario of heavy rainfall, indicated the availability of some of the metals even at the high pH of the Class C fly ash [12]. Therefore and in order to minimize the environmental impact of the use of ashes for solar cooling purposes, mixing of the fly ash with either an inert material like soil or a green roof material or multifunctional nanocomposites with high water vapor adsorption [13] is proposed.…”

Section: Toxicity Assessmentmentioning

confidence: 99%

Experimental Investigation of the Use of Lignite Ash for Roof Solar Cooling

Vardoulakis

Karamanis

2011

Linköping Electronic Conference Proceedings

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Abstract:The moisture sorption properties of fly or bottom ash and their application prospect as evaporative coolers of roof surfaces were studied. Initially, samples were characterized through techniques like elemental analysis, x-ray diffraction, thermogravimetry, reflectance measurements and water vapor adsorption isotherms. Moreover, the water adsorption properties and the associated temperature variations were determined in a specific wind tunnel with controllable environmental conditions. The adsorption isotherms were of type III indicating hydrophobic materials with low water vapor adsorption. However, all samples were capable of lowering their surface temperatures due to water evaporation and the release of the latent heat. The maximum differences in temperature increase under simulated solar irradiation between fly ash and concrete were 3.8, 4.1 and 6.4 °C for the surface, middle and bottom, respectively of 3 cm material thickness. The toxicity assessment of materials implication in buildings roofs was performed by radioactivity and metal leaching experiments with rain water. According to the results, mixing of fly ash with either an inert material like soil or a g reen roof material or multifunctional nanocomposites is proposed in order to minimize its environmental impact.

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Water vapor adsorption and photocatalytic pollutant degradation with TiO2–sepiolite nanocomposites

Cited by 52 publications

References 34 publications

Synthesis, characterization of magnetic-sepiolite supported with TiO2, and the photocatalytic performance over Cr(VI) and 2,4-dichlorophenol co-existed wastewater

Synthesis, characterization of magnetic-sepiolite supported with TiO2, and the photocatalytic performance over Cr(VI) and 2,4-dichlorophenol co-existed wastewater

Immobilization of Nanoparticles on Fibrous Clay Surfaces: Towards Promising Nanoplatforms for Advanced Functional Applications

Experimental Investigation of the Use of Lignite Ash for Roof Solar Cooling

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