In this work we investigated correlations between the internal microstructure and sample size (lateral as well as thickness) of mesoscopic, tens of nanometer thick graphite (multigraphene) samples and the temperature (T ) and field (B) dependence of their electrical resistivity ρ(T,B). Low energy transmission electron microscopy reveals that the original highly oriented pyrolytic graphite mater...

introduction thermal processing has a huge impact on the textural attribute of the final food product and texture is a major factor contributing the overall quality of food. ohmic heating is an advanced thermal processing method in which heat is internally generated within foods by passing an alternating electric current through them. ohmic heating can volumetrically heat the entire mass of a f...

The modification of electrode surfaces is widely implemented in order to try and improve electron transfer kinetics and surface interactions, most recently using graphene related materials. Currently, the use of 'as is' graphene oxide (GO) has been largely overlooked, with the vast majority of researchers choosing to reduce GO to graphene or use it as part of a composite electrode. In this pape...

Abstract Graphite intercalated compounds (GICs) with different stage numbers are prepared chemically from highly oriented pyrolytic graphite (HOPG), natural flaked (FG) and nitric acid. Exfoliated samples (EG-T) synthesized GICs via water treatment followed by thermal shock. The aim of this work is to investigate the dependence inner EG-T pore structure on extent oxidation type processing scann...

The electrochemical behavior of a modified electrode obtained by immobilization of single-walled carbon nanotubes onto a graphite electrode modified with a new phenothiazine derivative, bis-phenothiazin-3-yl methane (BPhM), G/BPhM-CNT, has been evaluated and compared with BPhM adsorbed on graphite electrode (G/BPhM). The G/BPhM-CNT electrode presents improved performances for NADH electrocataly...

The electrochemical behaviour of tobacco mosaic virus (TMV) and its isolated protein was studied using differential pulse (DP) voltammetry at a graphite electrode and by direct current (DC) polarography in Brdicka solution. TMV and its isolated protein were found to be electrooxidized at the graphite electrode in the adsorbed state. Both species yielded two oxidation peaks on DP voltammograms. ...

This work describes the gasification of carbon produced during pyrolysis methane. Carbon was deposited on nonporous α−Al2O3 at temperatures ranging between 950 and 1150 °C. The time in contact with methane varied 60 8400 s. Gasification tests were performed range 1000 to 1100 °C steam, CO2 air used as oxidizer. It observed that rate cannot be described by only parameters related conditions (tem...

In this paper, a novel core-modified porphyrin with meso-aryl substituents and phenanthrene-fused pyrrole rings (N2S2-OR) is synthesized. Scanning tunneling microscopy (STM) has been used to probe its self-assembly behavior on a highly-oriented pyrolytic graphite (HOPG) surface. Our STM results have shown that there is an obvious solvent-dependent self-assembly for the surface-confined target m...