Layered double oxide (LDO) particle containing photoreactive hybrid layers with tunable superhydrophobic and photocatalytic properties

Deák, Ágota; Janovák, László; Csapó, Edit; Ungor, Ditta; Pálinkó, István; Puskás, Sándor; Ördög, Tibor; Ricza, Tamás; Dékány, Imre

doi:10.1016/j.apsusc.2016.07.127

Cited by 34 publications

(28 citation statements)

References 32 publications

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“…The (200), (220) Bragg reflection peaks in Figure (b) are typical for the formation of the defect periclase MgO phase (Mg(Al)O)(JCPDS 45‐0946). Furthermore, the peaks positioned at 35.14 ° belong to the (101) Bragg reflections of ZnO indicating the presence of ZnO zincite (JCPDS 36–1451) in the sample . The analysis showed that the Figure (e) also appeared the diffraction peak of α‐Fe 3 O 4 at 33°, which is partly due to the complete crystal of Fe 3 O 4 transformed to the α‐Fe 3 O 4 phase at high temperature …”

Section: Resultsmentioning

confidence: 93%

Fe₃O₄/ZnMg(Al)O magnetic nanoparticles for efficient biodiesel production

Chen

Liu

et al. 2018

Applied Organom Chemis

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Fe 3 O 4 /ZnMg(Al)O solid base catalyst was prepared by calcining ZnMgAl-LDHs grown on the surface of magnetic Fe 3 O 4 synthesized by chemical coprecipitation. The magnetic property of the catalyst was studied by vibrating sample magnetometer. The results showed that the catalyst possessed excellent magnetic responsivity, and it could be recovered by external magnetic field. The magnetic catalyst was also characterized by ICP, TG-DTG, XRD, SEM, EDS, TEM and N 2 absorption-desorption. It was found that the catalyst showed a unique porous structure. The reaction conditions affecting biodiesel yield were investigated, the biodiesel yield reached 94% was obtained under the optimal conditions. The biodiesel yield was still above 82% after 7 times of regeneration, and the catalyst can be easily separated and recycled.

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Section: Resultsmentioning

confidence: 93%

Fe₃O₄/ZnMg(Al)O magnetic nanoparticles for efficient biodiesel production

Chen

Liu

et al. 2018

Applied Organom Chemis

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“…A kalcinálás után kapott, érdes felülettel rendelkezõ rétegeskettõs oxid (LDO) fotokatalizátor részecskék felületi energiáját jelen esetben is fluoropolimer alkalmazásával csökkentettük, mely egyben a fotokatalizátor részecskék felületi immobilizációját is biztosította 26 Interdisciplinary researches of nanotechnology and microbiology have become great interest to develop environmental applications against bacteria causing nosocomial infections [1][2][3][4][5] . Nosocomial infections caused by multidrug-resistant microorganisms, such as methicillin-resistant Staphylococcus aureus (MRSA) 4 , Acinetobacter baumannii, and Pseudomonas aeruginosa can be observed frequently in hospital settings.…”

Section: áBra Az éRdes Felülettel Rendelkezõ Réteges-kettõs Oxid (Ldunclassified

“…) 22 . It is also well-known that much effort has been devoted to develop artificial superhydrophobic surfaces by mimicking the lotus leaf structure [23][24][25][26] . In general, in creating a potentially superhydrophobic surface, the low energy as well as the adequate roughness of the surface are crucial factors.…”

Section: áBra Az éRdes Felülettel Rendelkezõ Réteges-kettõs Oxid (Ldmentioning

confidence: 99%

“…Photoreactive hybrid layers with dual self-cleaning and photocatalytic properties for elimination of surface bacteria binder material. As the result, the prepared hybrid rough surfaces displayed photocatalytic as well as superhydrophobic dual properties with antibacterial behaviors (Fig 11.) 26 . The state-of-the-art bifunctional materials possessing superhydrophobic and photoreactive properties are semiconductor photocatalyst/organic polymer nanocomposites, however, these nanocomposite configurations bear considerable drawbacks.…”

Section: Magyar Kémiai Folyóirat 89mentioning

confidence: 99%

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Öntisztuló felületek alkalmazása szerves anyagok eliminálására, ill. biológiai rendszerek ártalmatlanítására

Janovák¹,

Deák²,

Mérai³

et al. 2019

MKF

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“…5 The immobilization of photocatalyst nanoparticles in an appropriately structured binder or support material can lead to antimicrobial and self-cleaning properties, which expands the horizon of applications. State-of-the-art bifunctional materials, possessing superhydrophobic and photoreactive properties, 6 are semiconductor photocatalyst/organic polymer nanocomposites. 7,8 In such assemblies, low-energy hydrophobic polymers are employed as inert matrices to immobilize photocatalysts, exploiting their flexibility, low weight, impact resistance, and low cost.…”

mentioning

confidence: 99%

Microstructuration of poly(3-hexylthiophene) leads to bifunctional superhydrophobic and photoreactive surfaces

et al. 2018

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In this paper, we present the first report on an organic conducting polymer film, which alone exhibits both superhydrophobicity and visible light photoactivity. The microstructure of poly(3-hexylthiophene) was optimized using controlled precipitation until superhydrophobic behavior was achieved. Photocatalytic tests employing visible light irradiation proved that polymer degrades the ethanol test molecule.Controlling the wettability of solid surfaces and solid/fluid interfaces is important for a myriad of applications. Surfaces with water contact angles higher than 1501 (superhydrophobicity) can exhibit self-cleaning effects, as found in lotus leaves in nature. 1,2For preparing artificial superhydrophobic interfaces, hydrophobic functionality and surface roughness are both needed. Typically, a microstructure is superimposed by nanostructures, and this dual roughness reduces the contact area between water and the surface, resulting in water-repellent properties.3,4 The second major class of self-cleaning surfaces is photocatalytic coatings, which chemically decompose organic pollutants upon light exposure -this process is known as photocatalysis. 5 The immobilization of photocatalyst nanoparticles in an appropriately structured binder or support material can lead to antimicrobial and self-cleaning properties, which expands the horizon of applications. State-of-the-art bifunctional materials, possessing superhydrophobic and photoreactive properties, 6 are semiconductor photocatalyst/organic polymer nanocomposites. 7,8 In such assemblies, low-energy hydrophobic polymers are employed as inert matrices to immobilize photocatalysts, exploiting their flexibility, low weight, impact resistance, and low cost. 9-11 At the same time, nanocomposite configuration has considerable drawbacks. Most importantly, the polymer binder might decrease the intrinsic photocatalytic activity of the inorganic component via both optical/electrical shielding and by forming a physical barrier between the photoactive surface and the material to be decomposed. In addition, photogenerated charge carriers may also degrade the binder itself, causing possible detachment of the composite from the substrate. In the search for conceptually new alternatives, conducting polymers (also called conjugated polymers or synthetic metals, CPs) deserve consideration as they may fulfil the above requirements alone, without the need for composite formation. The wettability of CPs depends greatly on their chemical structure and the used dopants.12 For example, a polypyrrole (PPy) film containing a perfluorinated dopant anion exhibited hydrophobicity (water contact angle 4901), while ClO 4 À -doped PPy was hydrophilic. 13 The synthesis of superhydrophobic CPs and the reversible control of their wettability between superhydrophobicity and superhydrophilicity were also demonstrated. 14,15 Although the photoactivity of CPs is well-known and has been exploited in organic solar photovoltaic 16 and photoelectrochemical cells, 17 photocatalytic studies of CPs alone ...

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Layered double oxide (LDO) particle containing photoreactive hybrid layers with tunable superhydrophobic and photocatalytic properties

Cited by 34 publications

References 32 publications

Fe₃O₄/ZnMg(Al)O magnetic nanoparticles for efficient biodiesel production

Fe₃O₄/ZnMg(Al)O magnetic nanoparticles for efficient biodiesel production

Öntisztuló felületek alkalmazása szerves anyagok eliminálására, ill. biológiai rendszerek ártalmatlanítására

Microstructuration of poly(3-hexylthiophene) leads to bifunctional superhydrophobic and photoreactive surfaces

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Layered double oxide (LDO) particle containing photoreactive hybrid layers with tunable superhydrophobic and photocatalytic properties

Cited by 34 publications

References 32 publications

Fe3O4/ZnMg(Al)O magnetic nanoparticles for efficient biodiesel production

Fe3O4/ZnMg(Al)O magnetic nanoparticles for efficient biodiesel production

Öntisztuló felületek alkalmazása szerves anyagok eliminálására, ill. biológiai rendszerek ártalmatlanítására

Microstructuration of poly(3-hexylthiophene) leads to bifunctional superhydrophobic and photoreactive surfaces

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Fe₃O₄/ZnMg(Al)O magnetic nanoparticles for efficient biodiesel production

Fe₃O₄/ZnMg(Al)O magnetic nanoparticles for efficient biodiesel production