The influence of various sized zircaloy-4 oxidation products on hydrogen generation of the water solution by Co-60 gamma radiolysis

Nanoparticles La-NaTaO3 photocatalyst has been synthesized via a sol-gel route. A Ninanoparticle (NPs) as a cocatalyst is loaded on La-NaTaO3 by a simple impregnation method.The products are characterized by X-ray diffraction (XRD), scanning electron microscope(SEM), a high-resolution transmission electron microscope (HRTEM) and X-ray photoelectronspectroscopy (XPS). X-ray diffraction of the La-NaTaO3 samples shows perovskite-typecrystalline orthorhombic structure. Small particulate solids of La-NaTaO3 (30-250 nm) areobserved by SEM measurement. The nickel particles are detected from HRTEM images isaround 4-8 nm. The hydrogen evolution over La-NaTaO3 with NaCl is much higher than thatwithout NaCl. The photoactivity of La-NaTaO3 is enhanced when Ni is loaded on the surfaceof La-NaTaO3. The optimum loading amount of nickel is found to be 0.3 wt.% for La-NaTaO3,and it is more effective for H2 production from NaCl-water solution in the presence glucose.It is revealed that the loaded Ni can interact with each other and cooperate on improving thephotocatalytic activity. In the case of glucose as an electron donor, the activity ofphotocatalytic hydrogen generation over Ni/La-NaTaO3 increases dramatically. NaCl andglucose can promote markedly the photocatalytic hydrogen evolution. The Ni/La-NaTaO3nanoparticles system appears to be a promising candidate, which is very important to practicalapplications, including the production of H2 from NaCl-water solution in the presence ofglucose.

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Hydrogen generation by water radiolysis with immersion of oxidation products of Zircaloy-4

Journal of Nuclear Science and Technology ◽

10.1080/00223131.2015.1034215 ◽

2015 ◽

Vol 52 (10) ◽

pp. 1303-1307 ◽

Cited By ~ 3

Author(s):

Yoshinobu Matsumoto ◽

Thi-Mai-Dung Do ◽

Masao Inoue ◽

Ryuji Nagaishi ◽

Toru Ogawa

Keyword(s):

Hydrogen Generation ◽

Oxidation Products ◽

Water Radiolysis

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MÖSSBAUER STUDIES ON THE RADIATION DAMAGE PRODUCED BY ELECTRON CAPTURE AND GAMMA RADIOLYSIS IN COBALT AND IRON FORMATES

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19766195 ◽

1976 ◽

Vol 37 (C6) ◽

pp. C6-913-C6-916 ◽

Cited By ~ 3

Author(s):

J. LADRIERE ◽

D. J. APERS

Keyword(s):

Radiation Damage ◽

Electron Capture ◽

Mössbauer Studies ◽

Gamma Radiolysis

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The Anticoagulant Activity of 3.3’-(p-Alkylthio-Benzylidene)-Bis-4-Hydroxycoumarins and Their Oxidation Products

Thrombosis and Haemostasis ◽

10.1055/s-0038-1654103 ◽

1967 ◽

Vol 17 (01/02) ◽

pp. 277-286 ◽

Cited By ~ 2

Author(s):

Maria Gumińska ◽

M Eckstein ◽

Barbara Stachurska ◽

J Sulko

Keyword(s):

Biological Activity ◽

Anticoagulant Activity ◽

Oxidation Products ◽

Para Position ◽

Sulphur Atom ◽

Group I ◽

One Step

SummaryThe anticoagulant activity of 3.3’-(benzylidene)-bis-4-hydroxycoumarin derivatives has been estimated by one step Quick’s method. The derivatives contained the following groups in the para position of benzylidene residue: NCS- (I), CH3-S- (II), CH3-SO-(III), CH3-S02- (IV), C2H5-S- (V), C2H5-SO- (VI), C2H5-S02- (VII). All these compounds were much more active than 3.3’-(benzylidene)-bis-4-hydroxycoumarin itself.Compounds possessing the ethyl chain at the sulphur atom (V, VI, VII) were more active than methyl homologues (II, III, IV). Comparison of the activity of the series of thio-, sulphoxy-, and sulphonyl-derivatives showed that among methyl- and ethyl-derivatives those with the sulphoxy grouping (III, VI) displayed the greatest anticoagulant activity. The action of sulphonyl (IV, VII) and thio-derivatives (II, V) was weaker and shortest. The derivative with the NCS-group (I) possessed a relatively the lowest activity among the investigated compounds. 3.3’-(p-Ethylsulphoxybenzyl-idene)-bis-4-hydroxycoumarin (VI), with distinct biological activity reached about ½ of dicoumarol activity.

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‘Unexpected’ aldehydes in the oxidation products of octadecenoates

Journal of Biochemical Toxicology ◽

10.1002/jbt.2570150601 ◽

1965 ◽

Vol 15 (6) ◽

pp. 237-243

Author(s):

M. M. Horikx

Keyword(s):

Oxidation Products

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Linear and Nonlinear Optical Properties of Natural Dyes Freestanding Films and Application in Optical Limiting

10.32792/utq/utjsci/vol7/2/30 ◽

2020 ◽

pp. 139-143

Keyword(s):

Absorption Coefficient ◽

Water Solution ◽

Optical Limiting ◽

Refraction Index ◽

Laser Wavelength ◽

Solid State Laser ◽

Natural Dyes ◽

Linear And Nonlinear ◽

532 Nm ◽

Absorbance Spectra

Natural dyes were followed and prepared from a pomegranate, purple carrot, and eggplant peel. The absorbance spectra was measured in the wavelength range 300-800 nm. The linear properties measurements of the prepared natural dye freestanding films were determined include absorption coefficient (α0), extinction coefficient (κ), and linear refraction index (n). The nonlinear refractive index n2 and nonlinear absorption coefficient β2 of the natural dyes in the water solution were measured by the optical z-scan technique under a pumped solid state laser at a laser wavelength of 532 nm. The results indicated that the pomegranate dye can be promising candidates for optical limiting applications with significantly low optical limiting of 3.5 mW.

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