Synthesis of RGO/TiO2 nanocomposite flakes and characterization of their unique electrostatic properties using zeta potential measurements

Jastrzębska, Agnieszka; Karcz, J.; Letmanowski, Rafał; Zabost, Dariusz; Ciecierska, Ewelina; Siekierski, Maciej; Olszyna, A.

doi:10.1016/j.jallcom.2016.04.043

Cited by 30 publications

(16 citation statements)

References 47 publications

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“…All these bands originate from oxygen bearing functional groups attached to the C=C sp 2 network of GO and provide a characteristic spectral pattern usually observed in this class of materials (Marcano et al, 2010;Shen et al, 2009;Acik et al, 2010;Agorku et al, 2015). Particularly our results are in agreement with study conducted by Jastrzębska et al (2016) who showed all these types of vibrations occurred in pure GO.…”

Section: Characterization Gosupporting

confidence: 94%

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Physiological and biochemical impacts of graphene oxide in polychaetes: The case of Diopatra neapolitana

Marchi

Neto

Pretti

et al. 2017

Comparative Biochemistry and Physiology Part C: Toxicology &

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Graphene oxide (GO) is an important carbon nanomaterial (NM) that has been used, but limited literature is available regarding the impacts induced in aquatic organisms by this pollutant and, in particular in invertebrate species. The polychaete Diopatra neapolitana has frequently been used to evaluate the effects of environmental disturbances in estuarine systems due to its ecological and socio-economic importance but to our knowledge no information is available on D. neapolitana physiological and biochemical alterations due to GO exposure. Thus, the present study aimed to assess the toxic effects of different concentrations of GO (0.01; 0.10 and 1.00mg/L) in D. neapolitana physiological (regenerative capacity) and biochemical (energy reserves, metabolic activity and oxidative stress related biomarkers) performance, after 28days of exposure. The results obtained revealed that the exposure to GO induced negative effects on the regenerative capacity of D. neapolitana, with organisms exposed to higher concentrations regenerating less segments and taking longer periods to completely regenerate. GO also seemed to alter energy-related responses, especially glycogen content, with higher values in polychaetes exposed to GO which may result from a decreased metabolism (measured by electron transport system activity), when exposed to GO. Furthermore, under GO contamination D. neapolitana presented cellular damage, despite higher activities of antioxidant and biotransformation enzymes in individuals exposed to GO.

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Section: Characterization Gosupporting

confidence: 94%

“…In Figure 1C cm -1 ) reflects the disordered nature of GO. The Raman spectra reported in Figure 1C are very similar, indicating that the sp 2 fraction of the GO structures is fairly stable under the different experimental conditions considered in this study and are similar to those found in literature (Jastrzębska et al, 2016).…”

Section: Characterization Gosupporting

confidence: 88%

Physiological and biochemical impacts of graphene oxide in polychaetes: The case of Diopatra neapolitana

Marchi

Neto

Pretti

et al. 2017

Comparative Biochemistry and Physiology Part C: Toxicology &

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“…It was previously shown, that the presence of graphene oxide in a core of a core-shell hybrid changes bioactivity of a system due to changes of zeta potential which can inuence releasing of active ions. 42 Nowadays, numerous nanoproducts are introduced into aquatic environments with wastewater streams. 43 The estimation of nanomaterial toxicity to algae is essential because algae serve as the basis of numerous aquatic food chains.…”

Section: Resultsmentioning

confidence: 99%

Influence of modification of Ti₃C₂ MXene with ceramic oxide and noble metal nanoparticles on its antimicrobial properties and ecotoxicity towards selected algae and higher plants

Rozmysłowska-Wojciechowska

Karwowska

Позняк

et al. 2019

RSC Adv.

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“…Due to its unique properties, TiO 2 nanoparticles can be found in medicine, materials engineering, cosmetics, textiles, and the automotive industry . TiO 2 is also used as graphene‐modifying agent . Modification of TiO 2 nanoparticles with microbiologically active elements (eg, Al, Pd, Au) may lead to new applications .…”

Section: Introductionmentioning

confidence: 99%

The toxicity in vitro of titanium dioxide nanoparticles modified with noble metals on mammalian cells

Rosłon

Jastrzębska

Sitarz

et al. 2018

Int J Applied Ceramic Tech

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The aim of the presented work was to evaluate the effect of modification of titanium dioxide nanoparticles with noble metals and their oxides on selected mammalian cells. The in vitro cytotoxicity studies of titanium dioxide (TiO 2 ) nanoparticles modified with Au, Ag, Pd, Ag 2 O, and PdO with reference to the unmodified TiO 2 nanoparticles were presented. The evaluation of cytotoxic activity of the tested nanocomposite particles was carried out using three cell lines: Caco-2 colorectal epithelial adenocarcinoma cells, BJ normal human skin fibroblasts, and L929 mouse fibroblasts. The in vitro studies included determination of cell viability after 24 and 48 hours of exposure to the nanocomposite particles, using the MTT assay, as well as flow cytometry with Annexin V-FITC staining.Our results indicate that irrespectively of the kind of cell line and assay used, nanoparticles of unmodified titanium dioxide as well as those with addition of gold and palladium have a slight impact on cell viability at the investigated concentration range (10-200 μg/mL). Nanoparticles with addition of silver (Ag and Ag 2 O), were found to have significantly higher toxic effect, the level of which varied depending on the cell line and assay used.

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Synthesis of RGO/TiO2 nanocomposite flakes and characterization of their unique electrostatic properties using zeta potential measurements

Cited by 30 publications

References 47 publications

Physiological and biochemical impacts of graphene oxide in polychaetes: The case of Diopatra neapolitana

Physiological and biochemical impacts of graphene oxide in polychaetes: The case of Diopatra neapolitana

Influence of modification of Ti₃C₂ MXene with ceramic oxide and noble metal nanoparticles on its antimicrobial properties and ecotoxicity towards selected algae and higher plants

The toxicity in vitro of titanium dioxide nanoparticles modified with noble metals on mammalian cells

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Synthesis of RGO/TiO2 nanocomposite flakes and characterization of their unique electrostatic properties using zeta potential measurements

Cited by 30 publications

References 47 publications

Physiological and biochemical impacts of graphene oxide in polychaetes: The case of Diopatra neapolitana

Physiological and biochemical impacts of graphene oxide in polychaetes: The case of Diopatra neapolitana

Influence of modification of Ti3C2 MXene with ceramic oxide and noble metal nanoparticles on its antimicrobial properties and ecotoxicity towards selected algae and higher plants

The toxicity in vitro of titanium dioxide nanoparticles modified with noble metals on mammalian cells

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Influence of modification of Ti₃C₂ MXene with ceramic oxide and noble metal nanoparticles on its antimicrobial properties and ecotoxicity towards selected algae and higher plants