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Article
Antibacterial Activity of Aerogels of Reduced Graphene Oxide Decorated with Silver Nanoparticles
Samples of reduced graphene oxide aerogels decorated with silver nanoparticles (from 1 to 15 wt %) have been obtained. The reduction of silver ions was performed in the course of the reduction of graphene oxid...
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Article
Fabrication of Ultrafiltration Membranes from PAN Composites and Hydrophilic Particles for Isolation of Heavy Oil Components
Membranes have been fabricated from polyacrylonitrile (PAN) doped with graphene oxide (GO) particles, PAN pyrolyzed by IR irradiation (IR-PAN-a), and nanodiamonds (ND). The pore structure of the resulting memb...
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Article
Preparation and Characterization of Mechanically Strong Nanocomposite Latex Materials Based on Polyurethane/Graphene Oxide
Nanocomposites based on aqueous polyurethane latex and graphene oxide have been synthesized and characterized. The structure and composition of the nanocomposites were studied using elemental analysis, optical...
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Article
Negative Electrode Based on Silicon–Reduced Graphene Oxide Composite: Features of Charge-Discharge Processes under Different Electrochemical Conditions
The electrochemical properties of an electrode material based on a high-capacity silicon/reduced graphene oxide composite are studied. It was determined that the optimal potentials for reversible insertion/ext...
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Article
Charge Response of Ferroelectric Polymers Using Graphene-Based Electrodes
Conductive graphene-based electrodes are used to study the electrophysical high-voltage characteristics of a ferroelectric copolymer of vinylidene fluoride adn tetrafluoroethylene. It is shown that ultrasonic ...
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Article
Reduced Graphene Oxide–Polytetrafluoroethylene Composite Aerogels, Their High Hydrophobicity and Superhydrophilicity
Composite aerogels based on reduced graphene oxide (rGO) and polytetrafluoroethylene (PTFE) have been synthesized at different component ratios. It has been found by the sessile droplet method that the externa...
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Article
Electrochemical Synthesis of Coatings Based on Polydiphenylamine-2-carboxylic Acid on Anodized Graphite Foil Modified by Graphene Nanosheets and Manganese Oxides
The peculiarities of electrochemical polymerization of diphenylamine-2-carboxylic acid (DPAC) in alkaline electrolyte on anodized graphite foil (AGF) are studied with using of electrosynthesis (ES) modifiers (...
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Article
New Hydrophobic Materials Based on Radiation-Synthesized Telomeres of Tetrafluoroethylene and Melamine Sponge
Melamine-formaldehyde resins are widely used in the production of various technical and household products. By foaming a special resin, it is possible to obtain various foam plastics, including melamine sponge...
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Article
Hydrophobization of Melamine Sponges Using Radiation-Synthesized Tetrafluoroethylene Telomers
The process of hydrophobization of melamine sponges has been investigated. Solutions of radiation-synthesized tetrafluoroethylene telomers, which had different chain lengths and end groups, in acetone and a Fr...
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Article
Graphene-Based Aerogels Possessing Superhydrophilic and Superhydrophobic Properties and Their Application for Electroreduction of Molecular Oxygen
A composite aerogel with superhydrophobic external surface has been synthesized from reduced graphene oxide and polytetrafluoroethylene taken in a weight ratio of 1 : 1. The porous structure of the aerogel has...
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Article
Comparison of the Electrode Properties of Graphene Oxides Reduced Chemically, Thermally, or via Microwave Irradiation
Samples prepared via chemical, thermal, and microwave reduction of graphene oxide have been characterized by elemental analysis, BET measurements, scanning electron microscopy, and IR spectroscopy and tested a...
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Article
Silicon-Reduced Graphene Oxide Composite as Negative Electrode of Li-Ion Batteries
Two types of treatment of the initial mechanical mixture [silicon nanopowder and graphene oxide (GO)] for obtaining Si/RGO nanocomposites were used: reduction in hydrazine vapor and heat treatment at 550°C in ...
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Article
Raman Spectra of Composite Aerogels of Polytetrafluoroethylene and Graphene Oxide
Raman spectra of composite aerogels of polytetrafluoroethylene and graphene oxide (reduced grahpene oxide) (PTFE–GO (RGO)) are obtained and described. Five peaks (two Gaussians and three pseudo-Voigt functions...
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Article
Granulated Graphene Oxide/Titanium Dioxide Composite Aerogel as a High-Performance Photocatalyst
A composite photocatalyst based on graphene oxide and titanium dioxide has been developed and tested. The catalyst has been obtained as an aerogel, which consisted of granules (spheres and hemispheres) with a ...
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Article
Superhydrophobic Aerogel of Polytetrafluoroethylene/Graphene Oxide Composite
Polytetrafluoroethylene-based aerogel has been synthesized for the first time. Graphene oxide has been used as a binder. After reduction with hydrazine and annealing at 370°C, the aerogel surface has been foun...
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Article
Hydrophilic and hydrophobic pores in reduced graphene oxide aerogel
Aerogel is obtained from graphene oxide reduced by a mixture of H3PO2 and I2. The porous structure of an aerogel has been studied at room temperature using the method of standard contact porosimetry. Both water a...
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Article
Mechanical Properties of Films of Graphene Oxide Doped with Chitosan
Films of graphene oxide containing 3 wt % chitosan are obtained via the low-temperature evaporation of a stable mixture of aqueous suspensions. The obtained films are characterized via elemental analysis, IR s...
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Article
Oxidative Destruction of Chitosan and Its Stability
The properties of chitosan degraded under hydrogen peroxide action is studied. Using FTIR spectroscopy, HPLC, and 13C NMR spectroscopy, it is found that the oxidative destruction of chitosan is accompanied by the...
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Article
Do** Graphene Oxide Aerogel with Nitrogen during Reduction with Hydrazine and Low Temperature Annealing in Air
The presence of nitrogen is revealed via elemental analysis and X-ray photoelectron spectroscopy in graphene oxide aerogel annealed in air. It is estimated that a substantial amount of nitrogen emerges in samp...
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Article
Effect of Low-Temperature Heating on the Properties of Graphene Oxide Aerogel
The paper describes the effect of low-temperature annealing in air on the composition and structure of graphene oxide aerogel. It has been found that the concentration of carbon in the aerogel sharply increase...
