scholarly journals Promising antimicrobial and antibiofilm activities of reduced graphene oxide-metal oxide (RGO-NiO, RGO-AgO, and RGO-ZnO) nanocomposites

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 25961-25975
Author(s):  
Sherif Elbasuney ◽  
Gharieb S. El-Sayyad ◽  
Hesham Tantawy ◽  
Amr H. Hashem
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Reduced Graphene Oxide ◽  
Antimicrobial Agents ◽  
Antimicrobial Potential ◽  
Reduced Graphene ◽  
Microbial Infections

Microbial infections are considered one of the most dangerous infections for humans due to their resistance to most antimicrobial agents. Nanocomposites-based reduced graphene oxide doped with metal oxides possesses a promising antimicrobial potential.

scholarly journals Metal-organic framework-derived metal oxide nanoparticles@reduced graphene oxide composites as cathode materials for rechargeable aluminium-ion batteries

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Kaiqiang Zhang ◽  
Tae Hyung Lee ◽  
Joo Hwan Cha ◽  
Ho Won Jang ◽  
Ji-Won Choi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Reduced Graphene Oxide ◽  
Cathode Materials ◽  
Electrode Materials ◽  
Great Success ◽  
Discharge Process ◽  
Aluminium Ion ◽  
Reduced Graphene

Abstract The use of metal oxides as electrode materials has seen great success in lithium-ion batteries. However, this type of electrode materials has been regarded as an improper option for rechargeable aluminium-ion batteries (AIBs) in comparison with sulfides and selenides, and has, thus, been nearly abandoned. Here, we demonstrate the suitability of metal oxides as cathode materials of AIBs, exhibiting high electrochemical activities toward Al-ion storage. We designed economical metal-oxide cathodes (Co3O4@reduced graphene oxide (rGO), Fe2O3@rGO, and CoFe2O4@rGO) for AIBs. The Co3O4@rGO displayed superior electrochemical properties, regarding both capacity and lifespan, to the current state-of-the-art cathode material reported by scientific literature. Furthermore, the CoFe2O4@rGO exhibits rational electrochemical capacities and an extremely stable charge/discharge process with an excellent Coulombic efficiency of 99.6%. The proposed study expects to stimulate researchers to focus on the overlooked metal oxides as competitive cathode materials for high performance AIBs.

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

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1352
Author(s):  
Sanjit Manohar Majhi ◽  
Ali Mirzaei ◽  
Hyoun Woo Kim ◽  
Sang Sub Kim
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Reduced Graphene Oxide ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Reduced Form ◽  
Sensing Applications ◽  
Reduced Graphene ◽  
Electrospinning Method

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.

scholarly journals Reduced graphene oxide and inorganic nanoparticles composites – synthesis and characterization

2015 ◽  
Vol 17 (4) ◽  
pp. 95-103 ◽  
Author(s):  
Magdalena Onyszko ◽  
Karolina Urbas ◽  
Malgorzata Aleksandrzak ◽  
Ewa Mijowska
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Reduced Graphene Oxide ◽  
Zirconium Dioxide ◽  
Water Solution ◽  
Metal Oxide Nanoparticles ◽  
Direct Synthesis ◽  
Inorganic Nanoparticles ◽  
Oxide Nanoparticles ◽  
Reduced Graphene

Abstract Graphene – novel 2D material, which possesses variety of fascinating properties, can be considered as a convenient support material for the nanoparticles. In this work various methods of synthesis of reduced graphene oxide with metal or metal oxide nanoparticles will be presented. The hydrothermal approach for deposition of platinum, palladium and zirconium dioxide nanoparticles in ethylene glycol/water solution was applied. Here, platinum/reduced graphene oxide (Pt/RGO), palladium/reduced graphene oxide (Pd/RGO) and zirconium dioxide/reduced graphene oxide (ZrO2/RGO) nanocomposites were prepared. Additionally, manganese dioxide/reduced graphene oxide nanocomposite (MnO2/RGO) was synthesized in an oleic-water interface. The obtained nanocomposites were investigated by transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), Raman spectroscopy and thermogravimetric analysis (TGA). The results shows that GO can be successfully used as a template for direct synthesis of metal or metal oxide nanoparticles on its surface with a homogenous distribution.

scholarly journals Modification of polypropylene filter with metal oxide and reduced graphene oxide for water treatment

2014 ◽  
Vol 40 (5) ◽  
pp. 6927-6936 ◽  
Author(s):  
S.N. Ariffin ◽  
H.N. Lim ◽  
F.A. Jumeri ◽  
M. Zobir ◽  
A.H. Abdullah ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Water Treatment ◽  
Metal Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene

Metal Oxide/Reduced Graphene Oxide Anodes for Lithium-Ion Batteries

2015 ◽  
Vol 66 (9) ◽  
pp. 47-55 ◽  
Author(s):  
A. Palmieri ◽  
Y. Liu ◽  
J. He ◽  
Y. Meng ◽  
S. Suib ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Lithium Ion ◽  
Reduced Graphene
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