Iron and Iron Oxide Nanoparticles Synthesized with Green Tea Extract: Differences in Ecotoxicological Profile and Ability To Degrade Malachite Green

Plachtová, Pavla; Medříková, Zdenka; Zbořil, Radek; Tuček, Jiří; Varma, Rajender S.; Maršálek, Blahoslav

doi:10.1021/acssuschemeng.8b00986

Cited by 107 publications

(46 citation statements)

References 60 publications

(108 reference statements)

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“…The alternatives are biochemical and microbial methods of nanomaterial syntheses . Recently, magnetic oxide nanoparticles synthesized in green tea extracts showed superior property and lower ecotoxicological ability for environmental remediation applications . Microbial synthesis of nanomaterial is an important method since it connects biotechnology to nanotechnology.…”

Section: Synthesis Of Carbon‐based Materialsmentioning

confidence: 99%

Carbon‐Support‐Based Heterogeneous Nanocatalysts: Synthesis and Applications in Organic Reactions

2019

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Carbon-based-materials, owing to their wide availability and low cost, have been utilized for a variety of applications including heterogeneous catalysis. Various carbonaceous materials have been used as supports for transition metals or other materials. These support materials have shown their potential for development of green and sustainable approaches to heterogeneous catalysis. In this review, we discuss the utilization of carbon-based materials as supports for heterogeneous catalysts, especially in organic transformations. We have focused our discussions predominantly on four categories of carbonaceous supports, namely graphene (including, graphene oxide (GO) and reduced graphene oxide (RGO)), graphitic carbon nitride (GCN), carbon nanotubes (CNT) and activated carbon (AC) for various organic transformation reactions. Several approaches for the synthesis of these materials along with their application as heterogeneous catalysts for organic transformation reactions have been elaborated in detail. In addition, different aspects of organic synthesis, including hydrogenation, oxidation, reduction, condensation, and multi-component reactions, catalyzed by these materials have been discussed. Furthermore, organic transformations leading to the sustainable synthesis of valuable products from biomass have also been discussed. Finally, after a brief summary, the future perspectives of this very interesting class of materials are provided. Figure 1. Different types of carbon-support-based materials used as heterogeneous catalysts for organic transformations.

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Section: Synthesis Of Carbon‐based Materialsmentioning

confidence: 99%

Carbon‐Support‐Based Heterogeneous Nanocatalysts: Synthesis and Applications in Organic Reactions

2019

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“…Magnetic separation strategies by nanomaterials represent competitive options or, at least, valuable complementing methods to traditional approaches for the removal of organic and inorganic pollutants in water. Magnetic nanoparticles have been demonstrated to be effective, rapid and cost-effective tools for water remediation issues [100,101,102,103]. Separation processes based on magnetic particles offer the advantage of eliminating absorbed toxic compounds by the application of an external magnetic field.…”

Section: Bions For the Environmentmentioning

confidence: 99%

Bare Iron Oxide Nanoparticles: Surface Tunability for Biomedical, Sensing and Environmental Applications

Magro

Vianello

2019

Nanomaterials

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Surface modification is widely assumed as a mandatory prerequisite for the real applicability of iron oxide nanoparticles. This is aimed to endow prolonged stability, electrolyte and pH tolerance as well as a desired specific surface chemistry for further functionalization to these materials. Nevertheless, coating processes have negative consequences on the sustainability of nanomaterial production contributing to high costs, heavy environmental impact and difficult scalability. In this view, bare iron oxide nanoparticles (BIONs) are arousing an increasing interest and the properties and advantages of pristine surface chemistry of iron oxide are becoming popular among the scientific community. In the authors’ knowledge, rare efforts were dedicated to the use of BIONs in biomedicine, biotechnology, food industry and environmental remediation. Furthermore, literature lacks examples highlighting the potential of BIONs as platforms for the creation of more complex nanostructured architectures, and emerging properties achievable by the direct manipulation of pristine iron oxide surfaces have been little studied. Based on authors’ background on BIONs, the present review is aimed at providing hints on the future expansion of these nanomaterials emphasizing the opportunities achievable by tuning their pristine surfaces.

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“…The most dominant species of freshwater Ostracods in Egypt is Cypridopsis vidua 39 . Ostracods have been used as one of freshwater crustaceans in the ecotoxicological studies and also for toxicity monitoring of water, soil and river sediment 40 – 42 .…”

Section: Introductionmentioning

confidence: 99%

Acute toxicity assessment of polyaniline/Ag nanoparticles/graphene oxide quantum dots on Cypridopsis vidua and Artemia salina

Shokry

Khalil

Ibrahim

et al. 2021

Sci Rep

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Nanotoxicology is argued and considered one of the emerging topics. In this study, polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped silver nanoparticles (NPs)/graphene oxide (GO) quantum dots (QDs) nanocomposite (PANI/Ag (AMPSA)/GO QDs NC) as a nanoadsorbent has a potential for removal of toxic hexavalent chromium (Cr(VI)) ions from water. The acute toxicity of this NC was evaluated on Artemia salina and freshwater Ostracods (Cypridopsis vidua) larvae for 48 h. The measurements were made at 24 and 48 h with 3 repetitions. The 50% effective concentration (EC50) values of the NC were determined after the exposure of these organisms. According to the results of the optical microscope, it was found that both experimental organisms intake the NC. In the toxicity results of Ostracods, the NC had a highly toxic effect only at 250 mg/L after 48 h and the EC50 value was 157.6 ± 6.4 mg/L. For Artemia salina individuals, it was noted that they were less sensitive than the Ostracods and EC50 value was 476 ± 25.1 mg/L after 48 h. These results indicated that PANI/Ag (AMPSA)/GO QDs NC has low toxicity towards both investigated organisms.

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Iron and Iron Oxide Nanoparticles Synthesized with Green Tea Extract: Differences in Ecotoxicological Profile and Ability To Degrade Malachite Green

Cited by 107 publications

References 60 publications

Carbon‐Support‐Based Heterogeneous Nanocatalysts: Synthesis and Applications in Organic Reactions

Carbon‐Support‐Based Heterogeneous Nanocatalysts: Synthesis and Applications in Organic Reactions

Bare Iron Oxide Nanoparticles: Surface Tunability for Biomedical, Sensing and Environmental Applications

Acute toxicity assessment of polyaniline/Ag nanoparticles/graphene oxide quantum dots on Cypridopsis vidua and Artemia salina

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