108-80-5Relevant articles and documents
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Kitawaki,Sugino
, p. 1043,1044 (1960)
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Fenton
, (1878)
An HPLC method with UV detection, pH control, and reductive ascorbic acid for cyanuric acid analysis in water
Cantu,Evans,Kawahara,Shoemaker,Dufour
, p. 5820 - 5828 (2000)
Every year over 250 million pounds of cyanuric acid (CA) and chlorinated isocyanurates are produced industrially. These compounds are standard ingredients in formulations for household bleaches, industrial cleansers, dishwasher compounds, general sanitizers, and chlorine stabilizers. The method developed for CA using high-performance liquid chromatography (HPLC) with UV detection simplifies and optimizes certain parameters of previous methodologies by effective pH control of the eluent (95% phosphate buffer: 5% methanol, v/v) to the narrow pH range of 7.2-7.4. UV detection was set at the optimum wavelength of 213 nm where the cyanuric ion absorbs strongly. Analysis at the lower pH range of 6.8-7.1 proved inadequate due to CA keto - enol tautomerism, while at pHs of 7.4 proved more sensitive but their use was rejected because of CA elution at the chromatographic void volume and due to chemical interferences. The complex equilibria of chlorinated isocyanurates and associated species were suppressed by using reductive ascorbic acid to restrict the products to CA. UV, HPLC-UV, and electrospray ionization mass spectrometry techniques were combined to monitor the reactive chlorinated isocyanurates and to support the use of ascorbic acid. The resulting method is reproducible and measures CA in the 0.5-125 mg/L linear concentration range with a method detection limit of 0.05 mg/L in water.
Eyster, E. H.,Gillette, R. H.,Brockway, L. O.
, p. 3236 - 3243 (1940)
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Kurzer
, p. 1258,1261 (1951)
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Photocatalytic degradation of the herbicide terbuthylazine: Preparation, characterization and photoactivity of the immobilized thin layer of TiO2/chitosan
Le Cunff, Jér?me,Toma?i?, Vesna,Wittine, Ozren
, p. 22 - 29 (2015)
The aim of this study was to immobilize a photocatalytic TiO2 layer on a suitable support material for potential use in a variety of photoreactor designs. The immobilized TiO2/chitosan thin film was used for the photocatalytic treatment of a triazine herbicide, terbuthylazine as representative agrochemical pollutant in the wastewater. The method of preparation was based on the use of a chitosan as binder and glass fiber woven roving material as a support. The employed method was found to be very simple, low cost and quite effective. Several methods of the photocatalyst characterization, such as FE-SEM/EDX, AAS, ICP-MS, TOC and nitrogen adsorption/desorption at 77 K were employed to correlate structural and morphological properties of immobilized TiO2-chitosan/glass fiber woven roving and its photocatalytic properties under UV irradiation. Reaction was performed in a self-constructed batch mode and annular type of the photoreactor. Comparison of thermal, photolytic and photocatalytical degradation of treated terbuthylazine at different reaction conditions was performed in order to get more insight into the photocatalytic performance and reaction mechanism. It was observed that there is no decay in photocatalytic efficiency over a long period of reaction time using for the photocatalytic degradation of terbuthylazine.
Cyanuric and thiocyanuric esters as carriers of boron-containing fragments and their fragmentation in mass spectrometry
Azev, Yuri A.,Dülcks, Thomas,Gabel, Detlef
, p. 8689 - 8691 (2003)
Tripropargylic esters 2 and 10 of cyanuric and thiocyanuric acids were synthesized. Interaction of these compounds with disubstituted amines gives monoaminoderivatives of dipropargyloxy-s-triazine 4 and 11. Diaminosubstituted propargyloxy-s-triazine 6 was
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Werner, E. A.,Fearon, W. R.
, p. 1356 - 1362 (1920)
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Venable,Moore
, p. 1750 (1917)
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Kailasam, P.
, p. 165 - 169 (1941)
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Eley et al.
, (1973)
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Degradation of melamine in aqueous systems by vacuum UV-(VUV-) photolysis. An alternative to photocatalysis
Bianco Prevot, Alessandra,Maurino, Valter,Fabbri, Debora,Braun, André M.,Gonzalez, Mónica C.
, p. 286 - 293 (2020)
VUV-irradiation experiments with aqueous solutions of melamine and related triazine derivatives were carried out in the presence or absence of molecular oxygen. Substrate degradation, total organic carbon and evolution profiles of intermediates were monit
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Walters,Wise
, p. 2472 (1917)
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Phosphorus-Doped Carbon Nitride Tubes with a Layered Micro-nanostructure for Enhanced Visible-Light Photocatalytic Hydrogen Evolution
Guo, Shien,Deng, Zhaopeng,Li, Mingxia,Jiang, Baojiang,Tian, Chungui,Pan, Qingjiang,Fu, Honggang
, p. 1830 - 1834 (2016)
Phosphorus-doped hexagonal tubular carbon nitride (P-TCN) with the layered stacking structure was obtained from a hexagonal rod-like single crystal supramolecular precursor (monoclinic, C2/m). The production process of P-TCN involves two steps: 1) the precursor was prepared by self-assembly of melamine with cyanuric acid from in situ hydrolysis of melamine under phosphorous acid-assisted hydrothermal conditions; 2) the pyrolysis was initiated at the center of precursor under heating, thus giving the hexagonal P-TCN. The tubular structure favors the enhancement of light scattering and active sites. Meanwhile, the introduction of phosphorus leads to a narrow band gap and increased electric conductivity. Thus, the P-TCN exhibited a high hydrogen evolution rate of 67 μmol h-1 (0.1 g catalyst, λ >420 nm) in the presence of sacrificial agents, and an apparent quantum efficiency of 5.68 % at 420 nm, which is better than most of bulk g-C3N4 reported. Phosphorus-doped hexagonal carbon nitride tubes were obtained from a rod-like supramolecular precursor through phosphorous acid assisted hydrothermal and subsequent thermal treatment. It exhibits a high visible-light photocatalytic hydrogen evolution performance that is better than most reported bulk carbon nitrides, which is due to the hierarchical micro-nanostructure and P doping.
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Zobrist,Schinz
, p. 2380,2385 (1952)
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Curtius,Sieber
, p. 445,448,449,450 (1930)
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Senier,Walsh
, p. 290 (1902)
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Hartman,Fellig
, p. 1051 (1955)
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Preparation of diselenides by the oxidation of selenols using trichloroisocyanuric acid
Zhong,Guo
, p. 1507 - 1510 (2001)
Selenols are readily oxidized to diselenides by a solution of pyridine, water, benzoic acid, and trichloroisocyanuric acid in acetonitrile and methylene chloride.
Machine-Learning-Assisted Selective Synthesis of a Semiconductive Silver Thiolate Coordination Polymer with Segregated Paths for Holes and Electrons
Inokuchi, Akihiro,Kamakura, Yoshinobu,Nishikubo, Ryosuke,Ogasawara, Kazuyoshi,Saeki, Akinori,Shibahara, Hiroki,Tanaka, Daisuke,Wakiya, Takuma,Yoshikawa, Hirofumi
, p. 23217 - 23224 (2021)
Coordination polymers (CPs) with infinite metal–sulfur bond networks have unique electrical conductivities and optical properties. However, the development of new (-M-S-)n-structured CPs is hindered by difficulties with their crystallization. Herein, we describe the use of machine learning to optimize the synthesis of trithiocyanuric acid (H3ttc)-based semiconductive CPs with infinite Ag?S bond networks, report three CP crystal structures, and reveal that isomer selectivity is mainly determined by proton concentration in the reaction medium. One of the CPs, [Ag2Httc]n, features a 3D-extended infinite Ag?S bond network with 1D columns of stacked triazine rings, which, according to first-principle calculations, provide separate paths for holes and electrons. Time-resolved microwave conductivity experiments show that [Ag2Httc]n is highly photoconductive (φΣμmax=1.6×10?4 cm2 V?1 s?1). Thus, our method promotes the discovery of novel CPs with selective topologies that are difficult to crystallize.
THE PROCESS FOR OBTAINING OF FLUORALKYLATED CARBON QUANTUM DOTS
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, (2022/02/27)
The invention discloses a simple, scalable and convenient solvothermal method of obtaining fluoralkylated carbon quantum dots—Fluocar? Nano materials, by solvothermal pyrolysis of an organic substance in the presence of fluoroorganic substance that contain fluoroalkyl groups. The obtained material is water- and organic solvents soluble, grafted fluorine is hydrolytically stable, and obtained dots having intense luminescence in a wide range of wavelengths, from blue to NIR. Photoluminescent (PL) spectral map of obtained carbon dots solution is highly sensitive to pH changes and rare earth metal ions concentration in this solution. Also PL-map of such material is sensitive to organic complex moiety (e.g. Acidum salicylicum, and penicillinum). Synthesized materials can find use as the classic and fluorescent dye replacement, as the carrier of biologically active substances, for bio-imaging, theranostic, for cytological studies, (photo)catalysis, as electrode component, as well as a sensor or biosensor, or for other uses.