Utilization of extracted graphite rods from discharged dry cell batteries for synthesis of graphene oxide / graphene serves two purposes, one is waste management which supports environmental safety and the second is low cost production of graphene oxide / graphene which are highly promising 2D materials in various fields of research. In the present work, a sustainable feasibility for the synthesis of graphene oxide / graphene from graphite rods of waste dry cell batteries is demonstrated. The graphite rods separated from the waste dry cell batteries were subjected to electrochemical exfoliation (ECE) in an acidic media. The graphene oxide (GO) obtained from this method was subjected to reduction heat treatment under argon atmosphere at suitable temperature and time period. Finally, the reduced graphene oxide (rGO) i.e., graphene was characterized using XRD, FTIR, Raman Spectroscopy, TGA, BET, SEM and TEM. The few layer graphene structure is supposed to be less defective in comparison to similar exfoliation techniques due to less oxygen-functional groups associated with the intermediate graphene oxide.
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http://dx.doi.org/10.1016/j.jhazmat.2018.12.005 | DOI Listing |
Nanomaterials (Basel)
December 2024
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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View Article and Find Full Text PDFNanomaterials (Basel)
January 2025
Département de Génie Électrique, École de Technologie Supérieure, 1100 Notre-Dame Street West, Montreal, QC H3C 1K3, Canada.
This study explored the influence of graphene oxide (GO) on morphological and mechanical properties of Nafion 115 membranes with the objective of enhancing the mechanical properties of the most widely employed membrane in Proton Exchange Membrane Water Electrolyzers (PEMWE) applications. The membrane surface was modified by ultrasonically spraying a GO solution and different annealing temperatures were tested. Scanning Electron Microscopy (SEM) cross-sectional images revealed that annealing the composite membranes was sufficient to favor an interaction between the graphene oxide and the surface of the Nafion membranes.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
Department of Energy and Power Engineering, North University of China, Taiyuan 038507, China.
The NiCoO Nanosheets@Carbon fibers composites have been successfully synthesized by a facile co-electrodeposition process. The mesoporous NiCoO nanosheets aligned vertically on the surface of carbon fibers and crosslinked with each other, producing loosely porous nanostructures. These hybrid composite electrodes exhibit high specific capacitance in a three-electrode cell.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
Foundation for Research and Technology-Hellas (FORTH), Institute of Chemical Engineering Sciences (ICE-HT), Stadiou Str., GR-265 04 Rio-Patras, Greece.
This work focuses on the incorporation of 2D carbon nanomaterials, such as graphene oxide (GO), reduced graphene oxide (rGO) and graphene nanoplatelets (GNPs), into polypropylene (PP) via melt mixing. The addition of these 2D carbon nanostructured networks offers a novel approach to enhancing/controlling the water vapor permeable capabilities of PP composite membranes, widely used in industrial applications, such as technical (building roof membranes) or medical (surgical gowns) textiles. The study investigates how the dispersion and concentration of these graphene nanomaterials within the PP matrix influence the microstructure and water vapor permeability (WVP) performance.
View Article and Find Full Text PDFJ Mater Chem B
January 2025
Department of Electrical, Electronics and Communication Engineering, Indian Institute of Technology Dharwad, Karnataka - 580011, India.
Prostate cancer antigen 3 (PCA3) has emerged as a critical biomarker for the early detection of prostate cancer, complementing the traditional prostate-specific antigen (PSA) testing. This research presents a novel resistive sensor based on reduced graphene oxide (RGO) functionalized with glutaraldehyde (GA)/complementary single-stranded DNA (ss-DNA) for the detection of the PCA3 RNA. The device was meticulously characterized at each fabrication step to confirm the successful integration of the various layers on the sensor device, utilizing atomic force microscopy (AFM) which confirmed the increase in the thickness of the sensor from ∼1.
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