Journal•ISSN: 0018-1439
High Energy Chemistry
Springer Science+Business Media
About: High Energy Chemistry is an academic journal published by Springer Science+Business Media. The journal publishes majorly in the area(s): Radiolysis & Chemistry. It has an ISSN identifier of 0018-1439. Over the lifetime, 1995 publications have been published receiving 8358 citations.
Topics: Radiolysis, Chemistry, Aqueous solution, Radical, Excited state
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TL;DR: In this paper, the photoreduction threshold of graphite oxide (GO) films and solutions by UV light was determined to be 3.2 eV and an increase in absorption in the visible spectral region was observed.
Abstract: The photoreduction of graphite oxide (GO) films and solutions by UV light was studied. The electrical resistance of a GO film decreases upon irradiation by more than an order of magnitude. The threshold of photoreduction was determined to be 3.2 eV. The photoreduction is accompanied by an increase in absorption in the visible spectral region, and the CO, CO2, O2, and H2O molecules were found in the gas phase above the irradiated GO film.
97 citations
TL;DR: A brief overview of metal oxides and sulphides that can act as sensitizers for light-induced redox processes due to their electronic structure is presented in this paper, where the metal oxide and sulphide can be used as a sensitizer for photocatalysis utilizing solar energy.
Abstract: The depletion of non-renewable resources and rise in global warming has caused great concern to humankind. With a view to use renewable source of energy and to eliminate hazardous chemical compounds from air, soil, and water, photocatalysis utilizing solar energy is becoming a rapidly expanding technology. Semiconductor nanoparticles have the ability to undergo photoinduced electron transfer to an adsorbed particle governed by the band energy positions of the semiconductor and the redox potential of the adsorbate. A brief overview of metal oxides and sulphides that can act as sensitizers for light-induced redox processes due to their electronic structure is presented here.
58 citations
TL;DR: In this article, the emergence in SF6-Ar plasma of ion-acoustic solitons with angular profiles or profiles with several maxima has been explained, and it has been shown that the cause of these profiles is that the phase trajectories of this type in the phase portrait cover one or more separatrices, which can appear only in plasma with a complex chemical composition.
Abstract: The emergence in SF6-Ar plasma of ion-acoustic solitons with angular profiles or profiles with several maxima has been explained. It has been shown that the cause of these profiles is that the phase trajectories of the solitons of this type in the phase portrait cover one or more separatrices, which in turn can appear only in plasma with a complex chemical composition.
57 citations
TL;DR: In this article, a method for the generation of powerful low-frequency (of the order of 10-200 Hz) cavitation fields was developed and chemical and physicochemical effects in these fields were revealed, high performance hydrodynamic apparatus were designed and sonoluminescence and chemical effects were observed in such systems, ultrasound-induced oscillating reactions were discovered, and the generalized electric theory of cavitation processes was elaborated.
Abstract: Sonochemistry is one of the most intensively developing areas of high energy chemistry in both theoretical and applied aspects. There has been considerable progress in sonochemistry: many sonochemical reactions in nonaqueous systems were revealed, power yields for some sonochemical reactions and the initial power yields of ultrasonic degradation of water were determined, single-bubble sonoluminescence was discovered, the formation of radicals in an ultrasound field was detected by spin trapping, a method for the generation of powerful low-frequency (of the order of 10–200 Hz) cavitation fields was developed and chemical and physicochemical effects in these fields were revealed, high-performance hydrodynamic apparatus were designed and sonoluminescence and chemical effects were observed in such systems, ultrasound-induced oscillating reactions were discovered, and the generalized electric theory of cavitation processes was elaborated.
53 citations
TL;DR: The mechanisms of dissociation of oxygen-containing moieties (OH, -HCO, -COOH) upon the photoreduction of graphite oxide by UV light have been considered in this article.
Abstract: The mechanisms of dissociation of oxygen-containing moieties (-OH, -HCO, -COOH) upon the photoreduction of graphite oxide by UV light have been considered. It has been concluded that the photoreduction, which involves the detachment of the OH group and the molecular elimination of CO and CO2, occurs in singlet excited states. The energy threshold of the photoreduction processes is determined by the position of the repulsive terms of the system.
45 citations