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JournalISSN: 0922-6168

Research on Chemical Intermediates 

Brill
About: Research on Chemical Intermediates is an academic journal published by Brill. The journal publishes majorly in the area(s): Catalysis & Photocatalysis. It has an ISSN identifier of 0922-6168. Over the lifetime, 6178 publications have been published receiving 71421 citations. The journal is also known as: Research of chemical intermediates.


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Journal ArticleDOI
TL;DR: In this article, the possibility that these reactions are used in the evaluation of oxidative stress in human beings is discussed, and the possibility of using these reactions to evaluate human health conditions is discussed.
Abstract: The alkoxy and peroxy radicals formed in the degradation of hydroperoxides brought about by transition metal ions in acidic media can convert substrates with suitably low oxidation potentials, such as N,N-diethyl-para-phenylendiamine, to the corresponding radical cations. The possibility that these reactions are used in the evaluation of oxidative stress in human beings is discussed.

363 citations

Journal ArticleDOI
TL;DR: The use of semiconductor photocatalysis for treatment of water and air has been the topic of intense research activity over the past 20 years as mentioned in this paper, which has also been extended to the disinfection of environments contaminated with pathogenic micro-organisms.
Abstract: The use of semiconductor photocatalysis for treatment of water and air has been the topic of intense research activity over the past 20 years. This powerful process has also been extended to the disinfection of environments contaminated with pathogenic micro-organisms. This review summarizes recent developments concerned with the photocatalytic treatment of water contaminated with pathogenic micro-organisms presenting a potential hazard to animals and human beings.

330 citations

Journal ArticleDOI
TL;DR: In this article, electron injection dynamics in dye sensitized TiO2 nanocrystalline thin films were studied with femtosecond mid-infrared spectroscopy, and the dependence of injection rate and yield on the excited state redox potentials was observed.
Abstract: Electron injection dynamics in dye sensitized TiO2 nanocrystalline thin films are studied with femtosecond mid-infrared spectroscopy. Three classes of sensitizer molecules, Ru(dcbpy)2(X)2 (X2 = 2SCN, 2CN, and dcbpy), Fe(dcbpy)2(CN)2, and ReCl(CO)3(dcbpy), are used to examine the dependence of injection rate and yield on the excited state redox potentials. We observed that electron injection occurred on the <100 fs time-scale and injection quantum yield depended on the redox potential for the series of Ru dyes. These results suggest that electron injection to TiO2 competes with electronic and vibrational relaxation within the sensitizer excited states and the branching ratio between these two processes determines the injection quantum yield for sensitizer molecules with an excited state redox potential below the conduction band-edge.

271 citations

Journal ArticleDOI
TL;DR: In this paper, the most efficient and cheap photo-fenton-based AOP for wastewater treatment is investigated. And a rough cost estimate shows that Photo-Fenton treatment with sunlight is far cheaper than other available AOPs, namely ozonization.
Abstract: Advanced Oxidation Processes (AOPs) for wastewater treatment are gaining more importance since biological treatment plants are often not sufficient for highly contaminated or toxic wastewaters. In order to find out the most efficient and cheap AOP, investigations were concentrated on methods that can use sunlight. The systems TiO2/UV, Fe2+/H2O2/UV (Photo-Fenton reaction), Fe2+/O2/UV and Fe2+/O3/UV were compared. Since the Photo-Fenton system was the most effective, pilot plant experiments with industrial wastewaters and sunlight experiments were carried out. Finally a rough cost estimate shows that Photo-Fenton treatment with sunlight is far cheaper than other available AOPs, namely ozonization.

251 citations

Journal ArticleDOI
TL;DR: In this article, a two-step degradation, thioacidolysis, provides detailed information on these network polymers, and the determination of the recovered thioethylated monomers provides an estimation of lignin units only involved in labile ether bonds.
Abstract: Lignins are composed of phenylpropane units interconnected by labile and resistant bonds. A two-step degradation, thioacidolysis, provides detailed information on these network polymers. The first step involves lignin depolymerization with ethanethiol and BF3 etherate. The determination of the recovered thioethylated monomers provides an estimation of lignin units only involved in labile ether bonds. The ligninderived dimers, representative of resistant interunit bonds, are determined after a further desulfurization step. Results obtained for native and industrial hardwood lignins underline their structural differences. Native hardwood lignins are typified by a high proportion of linear fragments linked bifunctionally by β-O-4 bonds.

245 citations

Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
2023118
2022302
2021347
2020322
2019361
2018496