Remediation Process by Graphene Oxide

Pendolino, Flavio; Armata, Nerina

doi:10.1007/978-3-319-60429-9_4

Cited by 10 publications

(11 citation statements)

References 54 publications

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“…Figure B shows the ATR-FTIR spectra of the pure GO, isolated CuONPs, and GO–CuONP nanocomposite recorded in the range of 450–4000 cm –1 . For GO, the ATR-FTIR revealed the presence of corresponding vibrational sequences for the stretching modes around 3400, 1090, and a doublet at 1600 and 1716 cm –1 , respectively . These features in the spectra are associated with hydroxyl (OH), epoxy (C–O–C), and ketone (C=O) groups, associated with the known chemical composition of GO .…”

Section: Resultsmentioning

confidence: 98%

“…For GO, the ATR-FTIR revealed the presence of corresponding vibrational sequences for the stretching modes around 3400, 1090, and a doublet at 1600 and 1716 cm –1 , respectively . These features in the spectra are associated with hydroxyl (OH), epoxy (C–O–C), and ketone (C=O) groups, associated with the known chemical composition of GO . For the GO–CuONP nanocomposite, the features of the spectrum were significantly diminished, likely due to shielding effects of the surface adsorbed CuONPs.…”

Section: Resultsmentioning

confidence: 99%

“…Briefly, GO was synthesized using a modified Hummer’s method from bulk graphite . This method provides a simple, low-cost, efficient, and reproducible method for the production of GO using top-down methodologies . The chemical composition of the resulting GO was dependent on both the oxidation and exfoliation of the bulk graphite.…”

Section: Resultsmentioning

confidence: 99%

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Antibacterial Properties of Graphene Oxide–Copper Oxide Nanoparticle Nanocomposites

Rajapaksha

Cheeseman

Hombsch

et al. 2019

ACS Appl. Bio Mater.

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The resistance of pathogenic bacteria toward traditional biocidal treatment methods is a growing concern in various settings, including that of water treatment and in the medical industry. As such, advanced antibacterial technologies are needed to prevent infections, against which current antibiotics are failing. This study introduces copper oxide nanoparticles (CuONPs) doped in graphene oxide (GO) as a potential pathogenic bacterial treatment. The aim of the study was to evaluate the antibacterial properties of the GO–CuONP hybridized material against pathogenic Escherichia coli ATCC 8739 (E. coli) and Salmonella typhimurium ATCC 14028 (S. typhimurium). GO was synthesized using a modified Hummer’s method and doped with 40% w/w CuONPs using a series of thermal chemical reactions. The resulting hybrids were then characterized using scanning electron microscopic (SEM) and spectroscopic studies. These studies revealed that the hybrid material was considerably altered by the inclusion of CuONPs. The live and dead bacteria attached to the GO–CuONP material were detected using confocal laser scanning microscopy (CLSM). The antibacterial activity assay of the GO–CuONP material was conducted using a standard plate count method. Importantly, the GO–CuONP nanocomposite was determined to be an effective antibacterial nanomaterial, significantly inhibiting the growth of both E. coli and S. typhimurium bacteria compared to that observed on the pristine GO material. This study suggests that GO–CuONP composites are a promising high-efficacy antibacterial nanomaterial.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

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Antibacterial Properties of Graphene Oxide–Copper Oxide Nanoparticle Nanocomposites

Rajapaksha

Cheeseman

Hombsch

et al. 2019

ACS Appl. Bio Mater.

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“…GO has also been used for gas sensing studies [ 44 ]. On the other hand, GO has very high resistance due to the presence of alkoxy (C-O-C), hydroxyl (-OH), carboxylic acid (-COOH), carbonyl (C=O), and other oxygen-based functional groups [ 45 , 46 ]. rGO has more defects and dangling bonds than graphite, resulting in better sensing properties [ 47 ].…”

Section: Graphene Graphene Oxide and Reduced Graphene Oxidementioning

confidence: 99%

Reduced Graphene Oxide (rGO)-Loaded Metal-Oxide Nanofiber Gas Sensors: An Overview

Majhi

Mirzaei

Kim

et al. 2021

Sensors

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Reduced graphene oxide (rGO) is a reduced form of graphene oxide used extensively in gas sensing applications. On the other hand, in its pristine form, graphene has shortages and is generally utilized in combination with other metal oxides to improve gas sensing capabilities. There are different ways of adding rGO to different metal oxides with various morphologies. This study focuses on rGO-loaded metal oxide nanofiber (NF) synthesized using an electrospinning method. Different amounts of rGO were added to the metal oxide precursors, and after electrospinning, the gas response is enhanced through different sensing mechanisms. This review paper discusses rGO-loaded metal oxide NFs gas sensors.

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“…GO has the same hexagonal carbon structure to graphene. It also contains hydroxyl (–OH), alkoxy (C–O–C), carbonyl (C=O), carboxylic acid (–COOH) and other oxygen-based functional groups 11 . More importantly, GO can be utilized to synthesis reduced graphene oxide (rGO) by several steps of procedures.…”

Section: Introductionmentioning

confidence: 99%

Plasmon-enhanced reduced graphene oxide photodetector with monometallic of Au and Ag nanoparticles at VIS–NIR region

Rohizat

Ripain

Lim

et al. 2021

Sci Rep

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Hybrids plasmonic nanoparticles (NPs) and unique 2D graphene significantly enhanced the photoresponse of the photodetectors. The metallic NPs that exhibit localized surface plasmon resonance (LSPR) improves strong light absorption, scattering and localized electromagnetic field by the incident photons depending on the optimum condition of NPs. We report high-performance photodetectors based on reduced graphene oxide (rGO) integrated with monometallic of Au and Ag nanoparticles via a familiar fabrication technique using an electron beam evaporation machine. Under 680 nm illumination of light, our rGO photodetector exhibited the highest performance for Au-rGO with the highest responsivity of 67.46 AW−1 and the highest specific detectivity (2.39 × 1013 Jones). Meanwhile, Ag-rGO achieved the highest responsivity of 17.23 AW−1, specific detectivity (7.17 × 1011 Jones) at 785 nm. The response time are 0.146 µs and 0.135 µs for Au-rGO and Ag-rGO respectively for both wavelengths. The proposed photodetector with combining monometallic and graphene provide a new strategy to construct reliable and next-generation optoelectronic devices at VIS–NIR region.

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Remediation Process by Graphene Oxide

Cited by 10 publications

References 54 publications

Antibacterial Properties of Graphene Oxide–Copper Oxide Nanoparticle Nanocomposites

Antibacterial Properties of Graphene Oxide–Copper Oxide Nanoparticle Nanocomposites

Reduced Graphene Oxide (rGO)-Loaded Metal-Oxide Nanofiber Gas Sensors: An Overview

Plasmon-enhanced reduced graphene oxide photodetector with monometallic of Au and Ag nanoparticles at VIS–NIR region

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