Chemical modification of graphene with grape seed extract: Its structural, optical and antimicrobial properties

Autor: Sabu Thomas, Mariam Al Ali Al-Maadeed, Nandakumar Kalarikkal, Rajakumari Rajendran, Srinivasarao Yaragalla
Rok vydání: 2019
Předmět:
Morphology
Staphylococcus aureus
food.ingredient
Materials science
Photoluminescence
Optical Phenomena
Cell Survival
Bioengineering
Microbial Sensitivity Tests
02 engineering and technology
Spectrum Analysis
Raman
010402 general chemistry
01 natural sciences
law.invention
Biomaterials
symbols.namesake
food
X-Ray Diffraction
X-ray photoelectron spectroscopy
law
Spectroscopy
Fourier Transform Infrared
Escherichia coli
Modified thermally reduced graphene oxide
Spectroscopy
Antibacterial agent
Grape Seed Extract
Optical properties
Graphene
Photoelectron Spectroscopy
Temperature
021001 nanoscience & nanotechnology
Anti-Bacterial Agents
0104 chemical sciences
Mechanics of Materials
Grape seed extract
symbols
Graphite
Antibacterial activity
0210 nano-technology
Luminescence
Raman spectroscopy
Oxidation-Reduction
Nuclear chemistry
Zdroj: Materials Science and Engineering: C. 102:305-314
ISSN: 0928-4931
Popis: Herein, we modified for the first time thermally reduced graphene oxide (TRG) using grape seed extract (GSE), by simple probe sonication method. The effect of GSE on the structural changes of TRG has been carefully analyzed through Fourier Transform Infrared (FT-IR), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy and these spectral data proved that the TRG has been modified successfully. Furthermore, X-ray investigations proved the change in crystallinity and coherence length of TRG, which could be further, authenticated by Transmission electron microscopy (TEM). The optical properties of as prepared modified TRG (m-TRG) were investigated with the help of UV–Visible and photoluminescence spectroscopy. The band gap of m-TRG was found to be 4.1 eV and it exerted the luminescence in the visible region. Moreover, the antibacterial results showed that m-TRG has enhanced antibacterial activity and 80% of mortality was observed in both the gram positive and gram negative bacteria at a minimum concentration of 40 μg ml−1 and 60 μg ml−1. Thus, this m-TRG could find many applications in the future semiconductor and optoelectronic devices and it could be considered as a novel antibacterial agent that can find potential application in the areas of healthcare and engineering. The authors of this manuscript would like to thank the University Grants Commission ( 2061010223 ) (U.G.C), New Delhi and Department of Science and Technology (D.S.T) (Inspire Fellowship) New Delhi for their financial support. The authors would like to extend their thanks to Centre for Advanced Materials (CAM), Qatar University for supporting this work. Scopus
Databáze: OpenAIRE
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