Comparative effects of graphene and graphene oxide on copper toxicity to Daphnia magna: Role of surface oxygenic functional groups

Liu, Yingying; Fan, Wenhong; Xu, Zhizhen; Peng, Weihua; Luo, Shenglian

doi:10.1016/j.envpol.2017.10.082

Cited by 40 publications

(13 citation statements)

References 58 publications

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“…The peaks observed at 2θ = 25.4, 38.1, 48.0, 54.5, and 62.8° are consistent with the anatase phase of TiO 2 − and correspond to (101), (004), (002), (105), and (204) crystal faces, respectively. The XRD peak of the GO sheet shown at 2θ = 10.58° with the d-spacing is 0.85 nm, , which is consistent with the (002) plane. , This was much larger than the layer spacing of 0.34 nm of the original graphite . Due to the reduction of GO during the reaction, no characteristic lamella peaks of GO are observed in ERGT nanocomposites.…”

Section: Resultssupporting

confidence: 63%

Novel Silanized Graphene Oxide/TiO₂ Multifunctional Nanocomposite Photocatalysts: Simultaneous Removal of Cd²⁺ and Photodegradation of Phenols under Visible Light Irradiation

Xiong

Yang

et al. 2021

ACS Omega

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Reduced graphene oxide (RGO)-TiO 2 nanocomposites have exhibited effective photocatalytic degradation of various organic pollutants. However, their poor solubility could limit their application in water and other organic solvents. In this study, new graphene-based cross-linked ethylenediaminetetraacetic acid (EDTA)-RGO-TiO 2 (ERGT) nanocomposites were synthesized for the removal of Cd(II) and photodegradation of phenol from wastewater by surface-functionalized cross-linking heavy metal chelating agent sodium edetate (EDTA) and photocatalyst titanium dioxide. The structural properties of fabricated nanocomposites were characterized using SEM, TEM, XPS, FTIR, XRD, UV−vis, gas sorption, and Raman spectroscopy analyses. Moreover, the adsorption of Cd(II) and the degradation of phenol under different conditions were studied. The experimental results revealed that the optimal catalytic degradation and adsorption performance could be achieved at pH 5.5, and the maximum absorption ratio of cadmium ions and the degradation efficiency of phenol can reach 178.2 mg/g and 90%, respectively. The results suggested that ERGT is a potential material for the removal of threatening pollutants from wastewater.

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Section: Resultssupporting

confidence: 63%

Novel Silanized Graphene Oxide/TiO₂ Multifunctional Nanocomposite Photocatalysts: Simultaneous Removal of Cd²⁺ and Photodegradation of Phenols under Visible Light Irradiation

Xiong

Yang

et al. 2021

ACS Omega

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“…Graphene/Cu hybrids could increase the accumulation of Cu in Daphnia magna and enhance the oxidative damage thereto, while GO/Cu showed an opposite effect, minimizing the oxidative damage. [ 128 ] Plenty of functional groups with high adsorption capacity enable GO to trap more metal ions, and its interaction mode is different from that of graphene. As a result, GO/Cu hybrids can reduce the damage to organisms.…”

Section: Ecosystem Risks Of Gmsmentioning

confidence: 99%

Toward the Application of Graphene for Combating Marine Biofouling

Jin

Tian

Bing

et al. 2020

Advanced Sustainable Systems

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The discovery of graphene has brought great innovations to materials science. Since tributyltin antifouling coatings were banned worldwide in 2008, the development of green antifouling coatings has become necessary. Recently, novel graphene‐related antifouling coatings have been the focus of many studies due to their enhanced mechanical strength, excellent antifouling capabilities, and environmental friendliness. This review starts by introducing the basic antifouling mechanisms of graphene nanosheets and the possible antifouling mechanisms when graphene is incorporated into coatings. Subsequently, the progress and existing problems regarding the application of graphene in the prevention of marine biofouling are discussed. Specifically, this review focuses on six graphene‐related antifouling coatings, including pure graphene film, nanohybrids, foul release coatings, photocatalytic nanocomposites, desalination membranes, and materials for uranium enrichment. The fabrication, antifouling properties, working mechanisms, and future development of graphene‐related antifouling coatings are highlighted. In addition, the potential environmental risk of using graphene materials in preventing marine biofouling is explained, and the basic requirements for designing an environmentally friendly graphene‐related antifouling coating are discussed. Finally, the prospect of applying graphene materials for combating marine biofouling is presented. This review aims to aid in improving the design of graphene‐related green antifouling coatings.

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“…This is the vital consequence to build cost‐effective, environmentally safe, and scalable routines to generate GO. [ 1 ]…”

Section: Introductionmentioning

confidence: 99%

Structural Properties of Regenerated Carbon Graphene Oxide (GO) Synthesized through Hummers and Improved Hummer's Method

Zainuri

Bonnia

Affandi

et al. 2023

Macromolecular Symposia

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Graphene oxide (GO) is an oxidized form of graphene, laced with oxygen-containing groups. In recent years, the cost-effective and efficient synthesis of GO remains a significant issue. Hummer's method has become popular due to its simple top-down synthesis, however, there is an issue due to the release of nitrate gaseous which is harmful to the environment. This research is carried out using regenerated carbon from waste tire as a source of synthesize process through the Hummers Method (HM) and Improved Hummers Method (IHM). The Raman peaks of IHM GO show that the D band and G band are at 1369.12 and 1583 cm −1 , respectively and the intensity ratio of the D band relative to the G band (ID/IG) is 0.84. The morphology and structure of graphene oxide show that a nanosize particle stalked together on the surface of the sample structure, bumping pieces, and a coarse surface. The elemental composition of carbon (C) is higher than the oxygen (O) element which showed a good composition of graphene oxide. The XRD spectroscopy indicates the crystal structure of the material and the interlayer spacing between the material and atoms. In this study, the improved method is used by replacing sodium nitrate (NaNO 3 ) with phosphoric acid (H 3 PO 4 ) during the synthesis process to help increase interlayer distance and helps oxidation on the basal planes. This result confirms that the graphene oxide can be synthesized from regenerated carbon from waste tire using an improved Hummer's method.

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Comparative effects of graphene and graphene oxide on copper toxicity to Daphnia magna: Role of surface oxygenic functional groups

Cited by 40 publications

References 58 publications

Novel Silanized Graphene Oxide/TiO₂ Multifunctional Nanocomposite Photocatalysts: Simultaneous Removal of Cd²⁺ and Photodegradation of Phenols under Visible Light Irradiation

Novel Silanized Graphene Oxide/TiO₂ Multifunctional Nanocomposite Photocatalysts: Simultaneous Removal of Cd²⁺ and Photodegradation of Phenols under Visible Light Irradiation

Toward the Application of Graphene for Combating Marine Biofouling

Structural Properties of Regenerated Carbon Graphene Oxide (GO) Synthesized through Hummers and Improved Hummer's Method

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Comparative effects of graphene and graphene oxide on copper toxicity to Daphnia magna: Role of surface oxygenic functional groups

Cited by 40 publications

References 58 publications

Novel Silanized Graphene Oxide/TiO2 Multifunctional Nanocomposite Photocatalysts: Simultaneous Removal of Cd2+ and Photodegradation of Phenols under Visible Light Irradiation

Novel Silanized Graphene Oxide/TiO2 Multifunctional Nanocomposite Photocatalysts: Simultaneous Removal of Cd2+ and Photodegradation of Phenols under Visible Light Irradiation

Toward the Application of Graphene for Combating Marine Biofouling

Structural Properties of Regenerated Carbon Graphene Oxide (GO) Synthesized through Hummers and Improved Hummer's Method

Contact Info

Product

Resources

About

Novel Silanized Graphene Oxide/TiO₂ Multifunctional Nanocomposite Photocatalysts: Simultaneous Removal of Cd²⁺ and Photodegradation of Phenols under Visible Light Irradiation

Novel Silanized Graphene Oxide/TiO₂ Multifunctional Nanocomposite Photocatalysts: Simultaneous Removal of Cd²⁺ and Photodegradation of Phenols under Visible Light Irradiation