Atmospheric pressure plasmas: A review

Tendero, Claire; Tixier, Christelle; Tristant, Pascal; Desmaison, J.; Leprince, P.

doi:10.1016/j.sab.2005.10.003

Cited by 1,257 publications

(764 citation statements)

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“…A tmospheric (or nonthermal) plasmas are gaining increasing importance in different fields of application ranging from material technology to environmental pollution control [1]. Research and development are very active in this latter field, which comprises not only air [2,3] but, more recently, also water treatment processes [4].…”

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confidence: 99%

A mass spectrometry study of alkanes in air plasma at atmospheric pressure

Marotta

Paradisi

2008

J. Am. Soc. Mass Spectrom.

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The positive APCI-mass spectra in air of linear (n-pentane, n-hexane, n-heptane, n-octane), branched [2,4-dimethylpentane, 2,2-dimethylpentane and 2,2,4-trimethylpentane (i-octane)], and cyclic (cyclohexane) alkanes were analyzed at different mixing ratios and temperatures. The effect of air humidity was also investigated. Complex ion chemistry is observed as a result of the interplay of several different reagent ions, including atmospheric ions O 2 ϩ• , NO ϩ , H 3 O ϩ , and their hydrates, but also alkyl fragment ions derived from the alkanes. Some of these reactions are known from previous selected ion/molecule reaction studies; others are so far unreported. The major ion formed from most alkanes (M) is the species [M Ϫ H] ϩ , which is accompanied by M ϩ• only in the case of n-octane. Ionic fragments of C n H 2nϩ1 ϩ composition are also observed, particularly with branched alkanes: the relative abundance of such fragments with respect to that of [M Ϫ H] ϩ decreases with increasing concentration of M, thus suggesting that they react with M via hydride abstraction. The branched C 7 and C 8 alkanes react with NO ϩ to form a C 4 H 10 NO ϩ ion product, which upon collisional activation dissociates via HNO elimination. The structure of t-Bu ϩ (HNO) is proposed for such species, which is reasonably formed from the original NO ϩ (M) ion/molecule complex via hydride transfer and olefin elimination. . For air pollution control, different types of reactors and power supplies are being developed and tested for production of nonthermal plasmas by means of electrical discharges [3]. Following an initial phase devoted to prove the feasibility and competitiveness of the process in terms of energy and cost efficiency, research is presently focusing on the characterization of the chemistry-i.e., the products being released and the underlying chemical mechanisms-to develop a more efficient and cleaner process [5].In nonthermal plasmas, which are conveniently produced by electric corona discharges in air at atmospheric pressure, high-energy electrons induce ionization, excitation, and dissociation of the bulk gas molecules, N 2 and O 2 . The resulting reactive species, ionic and neutral as well as thermalized electrons, can attack molecules of organic pollutants present in the air, such as hydrocarbons and other volatile organic compounds (VOCs), and initiate a chain of reactions leading eventually to their oxidation. It is generally accepted that nonthermal plasma-induced VOC oxidation proceeds via VOC-derived organic radicals, R • , which are trapped by molecular oxygen and undergo further reactions as described for their tropospheric oxidation [6], leading eventually to CO 2 . As for the origin of such VOC-derived radicals, i.e., the nature of the initiation steps of nonthermal plasma-induced VOC decay, reactions of VOC molecules with neutrals and radicals, notably O( 3 P) and • OH, are usually envisioned. However, increasing numbers of literature reports suggest that in some cases ionic initiation steps might prevail [7][8][9...

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confidence: 99%

A mass spectrometry study of alkanes in air plasma at atmospheric pressure

Marotta

Paradisi

2008

J. Am. Soc. Mass Spectrom.

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“…In particular, contemporary electric discharge technologies for water bactericidal processing [1,2], medical instrument sterilization [3] and surgical procedure [4,5] already exist. The potential to generate "cold" non-equilibrium plasma of atmospheric pressure gas discharge are being intensively studied [6][7][8]. The latter is an urgent issue in relation to the disinfection of living and temperature sensitive materials [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Their low-current stage is a corona. It is the source of a non-equilibrium plasma with a gas temperature less than 400 K [8,11]. Due to low discharge currents and in the case of low energy density deposited into a gas volume, a pulsed corona discharge can be considered as a potential tool for plasma antimicrobial treatment of human skin and materials sensitive to heat and electric loads.…”

Section: Introductionmentioning

confidence: 99%

Destructive effect of atmospheric pressure pulsed corona discharge plasma in air on biofilms of opportunistic bacteria

Рыбальченко

Stepanova

Орлова

et al. 2016

Vestnik SPbSU. Series 11. Medicine

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Pulsed corona discharge (PCD) of moderate frequency in air has a bactericidal and bacteriostatic eff ect on Escherichia сoli М17 cultures at both cellular and population levels. PCD exposure inhibits forming a microbial community and results in the destruction of formed biofi lms. Th e paper presents data of electron microscopy investigations of cells' and biofi lms' ultrastructure aft er PCD treatment over a 90 second period. Th e morphological properties of opportunistic bacteria E. сoli M17 cells altered aft er sub-lethal and lethal thermal exposure. Refs 32. Figs 6.Keywords: pulsed corona discharge, atmospheric pressure discharge source, non-thermal air plasma, opportunistic bacteria, Escherichia coli, bacterial biofi lm, cell destructive mechanisms.DOI Импульсный коронный разряд (ИКР) средней частоты в воздухе способен оказывать бактери-цидное и бактериостатическое действие на культуру Escherichia сoli М17 как на клеточном, так и на популяционном уровне. Действие ИКР препятствует формированию микробного сооб-щества и приводит к деструкции уже образованных биопленок. В работе представлены данные электронно-микроскопических исследований ультраструктуры клеток и биопленок после их обработки ИКР в течение 90 секунд. Изменения морфологических свойств клеток E. сoli M17, вызванные обработкой ИКР, подобны изменениям после сублетального и летального теплово-го воздействия. Библиогр. 32 назв. Ил. 6. Ключевые слова: импульсный коронный разряд, низкотемпературная воздушная плазма, условно-патогенные бактерии, Escherichia coli, бактериальная биопленка, механизмы деструк-ции клеток.

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“…Atmospheric pressure plasma treatment of polymers can be used to tune surface properties and is intensively explored for the development of innovative textile materials [1,2]. However, the induced surface chemistry of the polymer is not well understood yet.…”

Section: Introductionmentioning

confidence: 99%

Static secondary ion mass spectrometry (S-SIMS) analysis of atmospheric plasma treated polypropylene films

Boschmans

Vanneste

Ruys

et al. 2006

Applied Surface Science

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Time-of-Flight (TOF) static secondary ion mass spectrometry (S-SIMS) was used to gain molecular information on the surface modifications introduced by plasma treatment of polypropylene (PP) films. A procedure using slotted electron microscopy grids was developed to deal with the charge build-up of samples with a thickness of about 30 mm. The surface composition was studied as a function of the plasma treatment time. A comparison of the mass spectra from untreated and treated PP showed significant differences of signal intensities of ions that could be specifically related to the presence of oxygen-containing species. #

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Atmospheric pressure plasmas: A review

Cited by 1,257 publications

References 101 publications

A mass spectrometry study of alkanes in air plasma at atmospheric pressure

A mass spectrometry study of alkanes in air plasma at atmospheric pressure

Destructive effect of atmospheric pressure pulsed corona discharge plasma in air on biofilms of opportunistic bacteria

Static secondary ion mass spectrometry (S-SIMS) analysis of atmospheric plasma treated polypropylene films

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