The effect of humic acid binding to magnetite nanoparticles on the photogeneration of reactive oxygen species

Carlos, Luciano; Cipollone, Mariano; Soria, Delia Beatriz; Moreno, M. Sergio; Ogilby, Peter R.; Einschlag, Fernando S. García; Mártire, Daniel O.

doi:10.1016/j.seppur.2011.08.028

Cited by 51 publications

(50 citation statements)

References 41 publications

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“…Both of Fe3O4 and Fe3O4/HA centered at 586 cm -1 were attributed to the stretching vibration of Fe-O bond [25]. The successful coating of HA on Fe3O4 showed the C=O vibration at 1404 cm -1 , indicating that the carboxylate anion interacted with the Fe3O4 surface as the C=O vibration in free carboxylate acids and this suggests that carboxylate groups indeed play an important role in the bonding between HA and Fe3O4 [30]. It is believed the bonding between HA and Fe3O4 surface is mainly done through ligand exchange [20].…”

Section: Resultsmentioning

confidence: 94%

Humic Acid Coated Fe3O4 Nanoparticle for Phenol Sorption

Koesnarpadi¹,

Santosa²,

Siswanta³

et al. 2017

Indones. J. Chem.

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Section: Resultsmentioning

confidence: 94%

Humic Acid Coated Fe3O4 Nanoparticle for Phenol Sorption

Koesnarpadi¹,

Santosa²,

Siswanta³

et al. 2017

Indones. J. Chem.

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“…The magnetic chitosan-based film has been synthesized by means of a modified procedure reported in the literature [31][32] for the synthesis of coated-iron oxide magnetic nanoparticles stabilized by humic substances. Chitosan was used instead of humic substances as dispersant and stabilizing matrix.…”

Section: Magnetic Film Preparationmentioning

confidence: 99%

One-step synthesis of magnetic chitosan polymer composite films

Cesano

Fenoglio

Carlos

et al. 2015

Applied Surface Science

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“…nAu particles exhibit very good thermal and optical properties, whereas their large surface area in storage media allows the retention of large amounts of data in a small space (Tedesco et al 2010, Balasubramanian et al 2010, Zhang et al 2003, Carlos et al 2012, Kunzmann et al 2011.…”

Section: Presence Of Nanomaterials In the Environmentmentioning

confidence: 99%

“…Nanoparticles of iron oxides are utilized in the cosmetic industry as sunscreens. Iron oxide nanoparticles are also used in pharmaceutical science (for magnetic separation of chemical compounds), DNA detection, magnetic drug targeting, magnetic resonance imaging (contrast agents), and as a component in dietary supplements and nutrients (Schwegmann et al 2010, Brullot et al 2012, Nor et al 2012, Kadar et al 2010, Carlos et al 2012, Adeleye et al 2013, Chen et al 2011, Pawlett et al 2013, Mohmood et al 2013. Manufacturers of products containing NMs are convinced that they have positive effects on human health and improve the appearance of skin, reduce sweating, and prevent infl ammation caused by microorganisms.…”

Section: Presence Of Nanomaterials In the Environmentmentioning

confidence: 99%

Inorganic nanomaterials in the aquatic environment: behavior, toxicity, and interaction with environmental elements

Krzyżewska¹,

Kyzioł-Komosińska²,

Rosik-Dulewska³

et al. 2016

Archives of Environmental Protection

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Abstract:The aim of this paper is to present characteristics, toxicity and environmental behavior of nanoparticles (NPs) (silver, copper, gold, zinc oxide, titanium dioxide, iron oxide) that most frequently occur in consumer products. In addition, NPs are addressed as the new aquatic environmental pollutant of the 21 st century. NPs are adsorbed onto particles in the aquatic systems (clay minerals, fulvic and humic acids), or they can adsorb environmental pollutants (heavy metal ions, organic compounds). Nanosilver (nAg) is released from consumer products into the aquatic environment. It can threaten aquatic organisms with high toxicity. Interestingly, copper nanoparticles (Cu-NPs) demonstrate higher toxicity to bacteria and aquatic microorganisms than those of nanosilver nAg. Their small size and reactivity can cause penetration into the tissues and interfere with the metabolic systems of living organisms and bacterial biogeochemical cycles. The behavior of NPs is not fully recognized. Nevertheless, it is known that NPs can agglomerate, bind with ions (chlorides, sulphates, phosphates) or organic compounds. They can also be bound or immobilized by slurry. The NPs behavior depends on process conditions, i.e. pH, ionic strength, temperature and presence of other chemical compounds. It is unknown how NPs behave in the aquatic environment. Therefore, the research on this problem should be carried out under different process conditions. As for the toxicity, it is important to understand where the differences in the research results come from. As NPs have an impact on not only aquatic organisms but also human health and life, it is necessary to recognize their toxic doses and know standards/regulations that determine the permissible concentrations of NPs in the environment.Unauthenticated Download Date | 5/12/18 7:36 AM

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The effect of humic acid binding to magnetite nanoparticles on the photogeneration of reactive oxygen species

Cited by 51 publications

References 41 publications

Humic Acid Coated Fe<sub>3</sub>O<sub>4</sub> Nanoparticle for Phenol Sorption

Humic Acid Coated Fe<sub>3</sub>O<sub>4</sub> Nanoparticle for Phenol Sorption

One-step synthesis of magnetic chitosan polymer composite films

Inorganic nanomaterials in the aquatic environment: behavior, toxicity, and interaction with environmental elements

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