Generation of radical species in CVD grown pristine and N-doped solid carbon spheres using H2 and Ar as carrier gases

Bridget K. Mutuma; Boitumelo J. Matsoso; Kamalakannan Ranganathan; Jonathan M. Keartland; Daniel Wamwangi; Neil J. Coville

doi:10.1039/c7ra03142d

Generation of radical species in CVD grown pristine and N-doped solid carbon spheres using H2 and Ar as carrier gases

RSC Advances ◽

10.1039/c7ra03142d ◽

2017 ◽

Vol 7 (34) ◽

pp. 21187-21195 ◽

Cited By ~ 12

Author(s):

Bridget K. Mutuma ◽

Boitumelo J. Matsoso ◽

Kamalakannan Ranganathan ◽

Jonathan M. Keartland ◽

Daniel Wamwangi ◽

...

Keyword(s):

Solid Carbon ◽

Carbon Spheres ◽

Radical Species ◽

Carrier Gas ◽

Carrier Gases

A mechanism showing the role of carrier gas on the N-configuration of the post-N-doped CSs synthesized in the presence of (a) H2 and (b) Ar, respectively.

Download Full-text

Highly pure pentacene crystals grown by physical vapor transport: the critical role of the carrier gas

Journal of Materials Chemistry C ◽

10.1039/d0tc04698a ◽

2021 ◽

Author(s):

Hye Soo Kim ◽

Soyoung Kim ◽

Jin Young Koo ◽

Hee Cheul Choi

Keyword(s):

Physical Properties ◽

High Purity ◽

Transport Process ◽

Critical Role ◽

Vapor Transport ◽

Physical Vapor Transport ◽

Carrier Gas ◽

Efficient Approach ◽

Carrier Gases

An efficient approach to obtaining high purity pentacene crystals via physical vapor transport process is reported, utilizing the physical properties of carrier gases.

Download Full-text

Esr studies on the role of ammonia in promoting radical species in precipitated titanium dioxide

Journal of Colloid and Interface Science ◽

10.1016/0021-9797(71)90142-1 ◽

1971 ◽

Vol 35 (3) ◽

pp. 424-433 ◽

Cited By ~ 16

Author(s):

R.D Iyengar ◽

Richard Kellerman

Keyword(s):

Titanium Dioxide ◽

Radical Species

Download Full-text

Gas Chromatographic Determination of Residues of Organophosphorus Pesticides with a Modified Flame Ionization Detector

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/50.3.601 ◽

1967 ◽

Vol 50 (3) ◽

pp. 601-604

Author(s):

Joseph H Ford ◽

Morton Beroza

Keyword(s):

Potassium Chloride ◽

Organophosphorus Pesticides ◽

Chromatographic Determination ◽

Ionization Detector ◽

Carrier Gas ◽

Flame Ionization ◽

Phosphorus Containing ◽

Carrier Gases ◽

Chloride Coating

Abstract The effect of various salt coatings, metals, and carrier gases was investigated in an attempt to improve the Giuffrida thermionic detector for residues of phosphorus-containing pesticides. As reported recently hy Giuffrida et al., the highest sensitivity to phosphorus (with insignificant response to halogen) was obtained with a potassium chloride coating. The use of helium as the carrier gas produced an 8-fold enhancement in response to phosphorus over that obtained with nitrogen, and the response to halogen remained nil. Substrate interference was very low with the KCI detector and helium carrier gas, and analyses were possible at the subnanogram level

Download Full-text

Porous carbon spheres from poly(4-ethylstyrene-co-divinylbenzene: role of ZnCl2 and KOH agents in affecting porosity, surface area and mechanical properties

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2019.109605 ◽

2019 ◽

Vol 288 ◽

pp. 109605 ◽

Cited By ~ 5

Author(s):

Federico Cesano ◽

Sara Cravanzola ◽

Valentina Brunella ◽

Domenica Scarano

Keyword(s):

Mechanical Properties ◽

Surface Area ◽

Porous Carbon ◽

Carbon Spheres ◽

Porous Carbon Spheres

Download Full-text

\The role of radical species in diesel engine auto-ignition detection

10.4271/2001-01-1003 ◽

2001 ◽

Cited By ~ 6

Author(s):

F. E. Corcione ◽

M. Costa ◽

B. M. Vaglieco ◽

A. De Maio

Keyword(s):

Diesel Engine ◽

Radical Species ◽

Auto Ignition

Download Full-text

The role of the liver in the production of free radicals during halothane anaesthesia in the rat. Quantification of N-tert-butyl-alpha-(4-nitrophenyl)nitrone (PBN)-trapped adducts in bile from halothane as compared with carbon tetrachloride

Biochemical Journal ◽

10.1042/bj2770795 ◽

1991 ◽

Vol 277 (3) ◽

pp. 795-800 ◽

Cited By ~ 14

Author(s):

H M Hughes ◽

I M George ◽

J C Evans ◽

C C Rowlands ◽

G M Powell ◽

...

Keyword(s):

Free Radicals ◽

Spin Trap ◽

Halothane Anaesthesia ◽

Perfused Liver ◽

Radical Species ◽

Tert Butyl ◽

Biliary Elimination ◽

Ccl4 Administration ◽

Liver Preparation

Halothane or CCl4 was co-administered with the spin trap N-tert-butyl-alpha-(4-nitrophenyl)nitrone (PBN) to rats fitted with bile duct cannuli or to isolated perfused liver preparations. Rats maintained under halothane anaesthesia generated significant amounts of free radicals, and 5-9 nmol was excreted in bile over 1 h. No adducts were detected in urine or plasma. The hepatic origin of these free radicals was confirmed by studies on isolated perfused livers where the addition of halothane to the perfusate resulted in the biliary elimination of the same PBN-trapped radical adducts. Similarly, following CCl4 administration, the same radical species were eliminated in bile in the whole animal and the perfused liver preparation. In the perfused liver, over 3 h the total biliary elimination of radicals derived from halothane or CCl4 (administered at equimolar concentrations) was approximately the same (5-7 nmol); however, the elimination of halothane-derived radicals was more rapid over the first 1 h.

Download Full-text

Plasma Deposition of Amorphous Metal Alloys

MRS Proceedings ◽

10.1557/proc-38-337 ◽

1984 ◽

Vol 38 ◽

Cited By ~ 2

Author(s):

Auda K. Hays

Keyword(s):

Inductively Coupled Plasma ◽

Chemical Deposition ◽

Amorphous Metal ◽

Gas Analysis ◽

Metal Alloys ◽

Carrier Gas ◽

Amorphous Metal Alloys ◽

P Content ◽

Hydrogen Carrier ◽

Carrier Gases

AbstractRapid solidification, sputtering and electroless chemical deposition have been used to produce amorphous metal alloys which possess excellent corrosion and abrasion resistance. This paper discusses a new technique for obtaining amorphous metal alloy coatings. This technique consists of dissociating mixtures of organometallics (metal carbonyls) and metalloid hydrides in a hydrogen carrier gas using a radio-frequency discharge. In particular, the formation of Ni-P alloys is discussed.Plasma decomposition of Ni(CO)4 and PH3 in argon and hydrogen carrier gases [Ni(CO) 4/PH3˜8/l] yielded films that were black and silver, respectively, in appearance. Both films were amorphous as determined by transmission electron microscopy. Films deposited using a hydroqen carrier gas were three orders of magnitude more conductive than those deposited using an argon carrier gas. Analysis of both films using electron microprohe analysis and inductively-coupled plasma spectroscony showed an enrichment of P in the films over the P content in the plasma qas mixtures. Reducinq the P content of the plasma gas mixture [Ni(CO)4/PH3˜17/Il yielded crystalline films with no P enrichment. The grain size in these films was ˜Å as determined by x-ray line-broadeninq.Using Auger electron spectroscopy, films deposited using hydroqen and argon carrier gases were determined to have, in addition to Ni and P, small amounts of carbon (8–12 at%) and oxygen (1–4 at%). Infrared spectra of both crystalline and amorphous films showed chemisorhed CO.

Download Full-text

MOCVD Growth of Copper and Copper Oxide Films from Bis-β-Diketonate Complexes of Copper. The Role of Carrier Gas on Deposit Composition.

MRS Proceedings ◽

10.1557/proc-250-297 ◽

1991 ◽

Vol 250 ◽

Cited By ~ 7

Author(s):

William S. Rees ◽

Celia R. Caballero

Keyword(s):

Copper Oxide ◽

Elemental Composition ◽

Oxide Films ◽

Chemical Vapor ◽

Carrier Gas ◽

Mocvd Growth ◽

Vapor Deposit

AbstractAn examination of thermal chemical vapor deposit elemental composition by EDAX has been completed for material films grown from Cu(acac)2 and Cu(tmhd)2 (acac = pentane-2,4-dionate; tmhd = 2,2,6,6-tetramethylheptane-3,5-dionate), using both hydrous and anhydrous carrier gas steams each of reducing (H2), inert (H2), and oxidizing (O2) composition.

Download Full-text