Haloperoxidase Mimicry by CeO2−x Nanorods Combats Biofouling

Herget, Karoline; Hubach, Patrick; Pusch, Stefan; Deglmann, Peter; Götz, Hermann; Gorelik, Tatiana E.; Gural'skiy, Il’ya A.; Pfitzner, Felix; Link, Thorben; Schenk, Stephan; Panthöfer, Martin; Ksenofontov, Vadim; Kolb, Ute; Opatz, Till; André, Rute; Tremel, Wolfgang

doi:10.1002/adma.201603823

Cited by 246 publications

(257 citation statements)

References 46 publications

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“…Among the developed enzyme mimicking nanomaterials ( i. e ., nanozymes), ceria nanozymes are notable in several aspects, such as their multiple enzyme mimicking activities, remarkable robustness, and excellent biocompatibility. Therefore, ceria nanozymes have been utilized for broad applications, ranging from glucose detection and immunoassay to ischemic stroke protection and anti‐biofouling ,,,…”

Section: Introductionmentioning

confidence: 99%

Engineering Nanoceria for Enhanced Peroxidase Mimics: A Solid Solution Strategy

et al. 2018

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Nanoceria has been developed as a biocompatible and robust enzyme mimic (called ceria nanozyme) and applied in bioanalysis and therapeutics. However, its catalytic activity such as peroxidase mimic is still moderate, which in turn has limited its promising applications. To tackle this issue, herein we reported an effective strategy to modulate the peroxidase mimicking activity of nanoceria by doping transition metals. We discovered that doping of the first row of transition metals (i. e., Mn, Fe, Co, Ni, and Cu) modulated the activity of nanoceria and with the same doping ratio the activities followed the below order: Mn1Ce10>Co1Ce10>Fe1Ce10>Cu1Ce10>CeO2>Ni1Ce10. By further varying the Mn/Ce ratio, Mn1Ce5 with the highest peroxidase mimicking activity was obtained (13‐fold higher compared with the pristine CeO2). Meanwhile we found that the homogenous doping of Mn into the nanoceria matrix without phase segregation ensured the formation of Mn1Ce5 solid solution. From our experiments and discussion, we concluded that the surface oxygen (Oβ) and the synergistic effect between Ce and Mn played key roles in the enhancement of Mn1Ce5 peroxidase mimicking activity. This study not only demonstrates that Mn‐doped nanoceria exhibits higher active peroxidase mimics but also provides a promising strategy to modulate the catalytic activity of nanozymes.

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Section: Introductionmentioning

confidence: 99%

Engineering Nanoceria for Enhanced Peroxidase Mimics: A Solid Solution Strategy

et al. 2018

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“…Die übermäßige Verwendung birgt jedoch Risiken für Umwelt und Gesundheit. Nun wurde eine neue biozidfreie Methode zur Bekämpfung des unerwünschten Bewuchses entwickelt,die einen natürlich Verteidigungsmechanismus nachahmt .…”

Section: Abbunclassified

“…Je nach Herstellungsverfahren ergeben sich unterschiedliche Partikelgrößen und Morphologien. Die resultierenden Ceroxid‐Nanopartikel (CeO 2‐x ) enthalten gemischtvalentesCer (Ce III /Ce IV ) . Sie sind unlöslich in Wasser aber – ähnlich wie V 2 O 5 – in der Lage, nach der Applikation auf Träger als Teil von konventionellen Lacken (ca.…”

Section: Biomimetischer Ansatzunclassified

“…Sie sind unlöslich in Wasser aber – ähnlich wie V 2 O 5 – in der Lage, nach der Applikation auf Träger als Teil von konventionellen Lacken (ca. 2 % des Trockengewichts) unter natürlichen Bedingungen den Bewuchs mit Mikroorganismen und Algen deutlich zu verringern und zwar in vergleichbarem Umfang wie Cu 2 O, der derzeitige Goldstandard (Abbildung ) .…”

Section: Biomimetischer Ansatzunclassified

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Cerdioxid schützt vor marinem Fouling

Herget¹,

Frerichs²,

Pfitzner³

et al. 2017

Chemie in nserer Zeit

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“…Nanorods were recently used to solve biofouling incorporating 2 wt% of CeO 2− x into paints . The technology was tested in the laboratory and in the field and showed biofouling reduction analogous on what we get from dyes with Cu 2 O particles.…”

Section: Introductionmentioning

confidence: 99%

CuO (Bromosphaerol) and CeMo (8 Hydroxyquinoline) microcontainers incorporated into commercial marine paints

Κορδάς

2019

J Am Ceram Soc

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We developed CuO and CeMo microcontainers, which were filled with Bromosphaerol (CuO (BR)), Sea-Nine 211 (CuO (SN)) and 8-Hydroxyquinoline (CeMo (8-HQ)).We created coatings on metals using the basic resins we took from the WILKENS and Re-Turn companies without additives of the companies. The coatings were studied in the laboratory after exposure to marine environment in Mikrolimano harbor in a distance of 12 km southwest from the city of Piraeus in the east coast of the Saronic Gulf (WILKENS) and Singapore harbor (Re-Turn). Laboratory measurements showed that CeMo (8-HQ) coatings exhibit better anticorrosion stability of paints in sea water than commercial paints. With regard to the incorporation of CuO (BR) into commercial paints, the results showed a drastic improvement in antifouling behavior from that resulting from commercial paints. The contact angle with water is improved by Θ = 70° to Θ = 115° possible through morphology of the surface due to the effect of the incorporation of microcontainers ensuring a better cruising behavior of the ship. This entails a dramatic rise in cruising speed, reducing fuel consumption and reducing air pollution. The technology was tested by the partial painting of two ships with our technology, one ship which traveled for a year in the Adriatic Sea (Sea Anemos) and the other traveled over a year in the Nord Sea (Berge Arzew). K E Y W O R D Sbioactivity, corrosion/corrosion resistance, nanoparticles, nanospheres, sol-gel | 2349 KORDAS WILKENS, Re-Turn and FORKYS companies for providing the chemicals. ORCID George Kordashttps://orcid.org/0000-0002-8078-0929

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Haloperoxidase Mimicry by CeO₂₋_x Nanorods Combats Biofouling

Cited by 246 publications

References 46 publications

Engineering Nanoceria for Enhanced Peroxidase Mimics: A Solid Solution Strategy

Engineering Nanoceria for Enhanced Peroxidase Mimics: A Solid Solution Strategy

Cerdioxid schützt vor marinem Fouling

CuO (Bromosphaerol) and CeMo (8 Hydroxyquinoline) microcontainers incorporated into commercial marine paints

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