Nanocomposite of montmorillonite and silver nanoparticles: Characterization and application in catalytic reduction of 4-nitrophenol

Praus, Petr; Turicová, Martina; Karlikova, Martina; Kvı́tek, Libor; Dvorský, Richard

doi:10.1016/j.matchemphys.2013.03.059

Cited by 42 publications

(20 citation statements)

References 35 publications

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“…PNP, one of the by-products of many chemical industries is toxic to the environment while PAP obtained by the reduction of PNP is a useful starting material for the preparation of many important products like paracetamol, acetanilide, phenacetin etc. 54 The UV-visible absorption spectra of samples obtained during the photo reduction of PNP were shown in Fig. 7.…”

Section: Resultsmentioning

confidence: 99%

A facile one pot synthetic approach for C₃N₄–ZnS composite interfaces as heterojunctions for sunlight-induced multifunctional photocatalytic applications

et al. 2016

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Section: Resultsmentioning

confidence: 99%

A facile one pot synthetic approach for C₃N₄–ZnS composite interfaces as heterojunctions for sunlight-induced multifunctional photocatalytic applications

et al. 2016

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“…Combination of magnetic nanoparticles with clays has been applied even in enzymatic immobilization [17], as bactericide materials [18], T in catalytic activity [19,20], environmental remediation and biocompatible materials [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Barraqué¹,

Montes

Fernández³

et al. 2018

Journal of Magnetism and Magnetic Materials

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Montmorillonite magnetic-clay nanoparticles (MtMag) and its exchanged product with hexadecyltrimethylammonium (O100MtMag) were synthetized by alkaline oxidation of ferrous sulfate, characterized by diverse techniques (XRD, Mössbauer spectroscopy, VSM, SEM, Zeta Potential, total specific surface area, TOC) and used as Co 2+ sorbents. The magnetic characteristic of these materials allows them to be used in cases of decontamination of water polluted with dangerous materials, such as radioactive ones, reducing the risk to health due to indirect manipulation by means of external magnetic fields. For comparison, samples without magnetic material (O100Mt) and in absence of clay (Mag) were also synthetized. The synthesis of magnetic materials disclosed the presence of magnetite and goethite nanoparticles, while the saturation magnetization displayed by O100MtMag was higher than that obtained for MtMag, indicating the existence of a higher amount of magnetite particles in the first one. This suggests that O100MtMag could be manipulated easier than MtMag through external magnetic fields. Moreover, the surface electric charge of MtMag sample can be described as a mixture of Magnetite and montmorillonite, with ratios related to the surface of both components. Co 2+ sorption percentages, using an initial Co 2+ concentration of 85 mg/L, resulted similar for the different materials while the Co 2+ sorption was ascribed to interactions with the montmorillonite interlayer and external surface. The current results indicate that O100MtMag is a more appropriate material than MtMag for Co 2+ removal by external magnets.

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“…[4][5][6] The resultant materials show a clear improvement of photophysical and photochemical properties and this results in higher performances as photocatalysts for degradation of dyes, 7 water splitting reaction, 2 Cr(IV) photoreduction, 8 etc. 12 Thus, in this opportunity we report new ZnS-Bipy based hybrid materials synthesized by using solvothermal methods and varying the bipy contents in order to test their photocatalytic activity in the reduction reaction of 4-NP to 4-Aminophenol (4-AP) in the presence of Na 2 SO 3 as hole scavengers. 9,10 On the other hand, there has been considerable attention to the use of nanomaterials as photocatalyst for reduction reactions in pollutants like 4-Nitrophenol in the presence of hole scavenger molecules.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of new ZnS–Bipy based hybrid organic–inorganic materials for photocatalytic reduction of 4-nitrophenol

et al. 2015

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ARTICLE This journal isZnS and ZnS-Bipy (4,4-Bipyridine) hybrid based organic-inorganic materials are easily synthesized using solvothermal methods and their structural, optical and morphological properties are characterized by FTIR spectroscopy, X-ray diffraction, UV-Vis spectroscopy, nitrogen physisorption and transmission electron microscopy TEM. The newly synthesized materials are tested as catalysts in the photocatalytic reduction of 4-Nitrophenol to 4-Aminophenol using Na 2 SO 3 as hole scavengers, under UV light irradiation. ZnS-Bipy hybrid organic-inorganic materials show a high performance in the photocatalytic activity. In contrast, for non-hybrid cubic ZnS performance is lower in comparison and also is unable to complete the whole photoreduction reaction. The high bipy contents linked to cubic ZnS surface induce changes in the electronic-optical, steric and textural properties in the new resultant hybrid materials.

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Nanocomposite of montmorillonite and silver nanoparticles: Characterization and application in catalytic reduction of 4-nitrophenol

Cited by 42 publications

References 35 publications

A facile one pot synthetic approach for C₃N₄–ZnS composite interfaces as heterojunctions for sunlight-induced multifunctional photocatalytic applications

A facile one pot synthetic approach for C₃N₄–ZnS composite interfaces as heterojunctions for sunlight-induced multifunctional photocatalytic applications

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Synthesis of new ZnS–Bipy based hybrid organic–inorganic materials for photocatalytic reduction of 4-nitrophenol

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Nanocomposite of montmorillonite and silver nanoparticles: Characterization and application in catalytic reduction of 4-nitrophenol

Cited by 42 publications

References 35 publications

A facile one pot synthetic approach for C3N4–ZnS composite interfaces as heterojunctions for sunlight-induced multifunctional photocatalytic applications

A facile one pot synthetic approach for C3N4–ZnS composite interfaces as heterojunctions for sunlight-induced multifunctional photocatalytic applications

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Synthesis of new ZnS–Bipy based hybrid organic–inorganic materials for photocatalytic reduction of 4-nitrophenol

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A facile one pot synthetic approach for C₃N₄–ZnS composite interfaces as heterojunctions for sunlight-induced multifunctional photocatalytic applications

A facile one pot synthetic approach for C₃N₄–ZnS composite interfaces as heterojunctions for sunlight-induced multifunctional photocatalytic applications