Efficacious realization of Ba0.5Sr0.5TixM1−xO3 (M = Mn2+, Co2+) perovskite nanostructures through oxalate precursor strategy

2018 ◽  
Vol 29 (17) ◽  
pp. 14582-14588 ◽  
Author(s):  
Ali Omar Turky ◽  
Ahmed Esmail Shalan ◽  
Mohamed M. Rashad ◽  
Hailei Zhao ◽  
Mikhael Bechelany
Keyword(s):  
Oxalate Precursor

Reduction behaviour of Fe3+/Al2O3obtained from the mixed oxalate precursor and the formation of the Fe0–Al2O3metal–ceramic composite

1993 ◽  
Vol 3 (5) ◽  
pp. 513-518 ◽  
Author(s):  
Ch. Laurent ◽  
A. Rousset ◽  
M. Verelst ◽  
K. R. Kannan ◽  
A. R. Raju ◽  
...  
Keyword(s):  
Ceramic Composite ◽  
Oxalate Precursor ◽  
Reduction Behaviour

The mechanism of oxalate biosynthesis in higher plants: investigations with the stable isotopes 18 O and 13 C

1982 ◽  
Vol 216 (1202) ◽  
pp. 87-101 ◽  
Keyword(s):  
Spinacia Oleracea ◽  
Higher Plants ◽  
Direct Oxidation ◽  
Experimental Conditions ◽  
Carboxylase Activity ◽  
Oxalate Precursor ◽  
Organic C ◽  
Oxygenase Activity ◽  
C Value ◽  
Oxalate Synthesis

Substantial incorporation of 18 O 2 into photorespiratory carbon oxidation cycle intermediates in illuminated Spinacia oleracea leaves confirms that oxygenase activity of the enzyme ribulose biphosphate carboxylase–oxygenase is a major source of glycollate in illuminated leaves. No 18 O 2 incorporation into oxalate was detected in these experiments, although 13 C incorporation from 13 CO 2 shows that oxalate synthesis is occurring under the experimental conditions. This result tends to minimize the role of a direct oxidation of glyoxylate derived (via phosphoglycollate and glycollate) from ribulose biphosphate oxygenase activity in oxalate synthesis in Spinacia . Measurements of δ 13 C show (in confirmation of earlier reports) that oxalate from Spinacia is less depleted in 13 C than is bulk organic C in the plant; it is possible the phosphoenolpyruvate carboxylase is involved in the production of the oxalate precursor. Of the plants tested, Mercurialis and Pelargonium shared with Spinacia the high δ 13 C value, while Chenopodium (closely related to Spinacia ), Oxalis (more distantly related to Pelargonium ) and two members of the Polygonaceae had oxalate δ 13 C values close to the whole-leaf δ 13 C value, which suggests derivation of both oxalate C atoms from carboxylase activity of the enzyme ribulose biphosphate carboxylase–oxygenase.

Structurally improved MgO adsorbents derived from magnesium oxalate precursor for enhanced CO2 capture

Fuel ◽  
2020 ◽  
Vol 278 ◽  
pp. 118379
Author(s):  
Chang Tan ◽  
Yafei Guo ◽  
Jian Sun ◽  
Weiling Li ◽  
Jubing Zhang ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Oxalate Precursor ◽  
Magnesium Oxalate

scholarly journals Achieving exceedingly constructional characterization of magnesia-yttria (MgO-Y2O3) nanocomposite obtained via oxalate precursor strategy

Measurement ◽  
2020 ◽  
Vol 150 ◽  
pp. 106888 ◽  
Author(s):  
Ali Omar Turky ◽  
Ahmed Esmail Shalan ◽  
Emad M.M. Ewais ◽  
Hailei Zhao ◽  
Mikhael Bechelany ◽  
...  
Keyword(s):  
Oxalate Precursor

Synthesis of Mesoporous Metal Oxide by the Thermal Decomposition of Oxalate Precursor

Langmuir ◽  
2013 ◽  
Vol 29 (13) ◽  
pp. 4404-4412 ◽  
Author(s):  
Limin Guo ◽  
Hiroyuki Arafune ◽  
Norio Teramae
Keyword(s):  
Thermal Decomposition ◽  
Metal Oxide ◽  
Oxalate Precursor ◽  
Mesoporous Metal ◽  
Mesoporous Metal Oxide

Novel synthesis and characterization of nanocrystalline thoria from oxalate precursor via reverse micellar route

2013 ◽  
Vol 101 (1) ◽  
pp. 7-12 ◽  
Author(s):  
R. Gupta ◽  
S. K. Gupta ◽  
S. K. Aggarwal
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ammonium Oxalate ◽  
Thorium Nitrate ◽  
Oxalate Precursor ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Average Grain Size ◽  
Thorium Oxalate

Abstract Nanoparticles of thorium oxalate were synthesized by the reaction of thorium nitrate and ammonium oxalate by the microemulsion method. The Th02 nanoparticles were obtained by heating thorium oxalate nanoparticles at 500 °C in air. The oxalate and oxide nanoparticles of thorium were characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), thermogravimetric analysis (TGA) and selected area electron diffraction (SAED). X-ray diffraction studies showed the mono-phasic nature of the powder thoria. The particle size was obtained from X-ray line broadening (~l0 nm) and transmission electron microscopy (~l0 nm). Dynamic light scattering (DLS) was used to calculate the average grain size of the particles. SAED confirmed the nanocrystalline nature of thoria particles. High resolution transmission electron microscopy (HRTEM) was also carried out to understand the morphology of the system. The monodisperse nanoparticles of thoria are promising for future reactor technologies.

scholarly journals Lanthanum Ferrite Ceramic Powders: Synthesis, Characterization and Electrochemical Detection Application

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2061
Author(s):  
Raluca Dumitru ◽  
Sorina Negrea ◽  
Adelina Ianculescu ◽  
Cornelia Păcurariu ◽  
Bogdan Vasile ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Cyclic Voltammetry ◽  
Electrochemical Detection ◽  
Ceramic Powders ◽  
Oxalate Precursor ◽  
Transmission Electron ◽  
Lanthanum Ferrite ◽  
Emerging Pollutant ◽  
Electrocatalytic Effect

The perovskite-type lanthanum ferrite, LaFeO3, has been prepared by thermal decomposition of in situ obtained lanthanum ferrioxalate compound precursor, LaFe(C2O4)3·3H2O. The oxalate precursor was synthesized through the redox reaction between 1,2-ethanediol and nitrate ion and characterized by chemical analysis, infrared spectroscopy, and thermal analysis. LaFeO3 obtained after the calcination of the precursor for at least 550–800 °C/1 h have been investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). A boron-doped diamond electrode (BDD) modified with LaFeO3 ceramic powders at 550 °C (LaFeO3/BDD) by simple immersion was characterized by cyclic voltammetry and tested for the voltammetric and amperometric detection of capecitabine (CCB), which is a cytostatic drug considered as an emerging pollutant in water. The modified electrode exhibited a complex electrochemical behaviour by several redox systems in direct relation to the electrode potential range. The results obtained by cyclic voltammetry (CV), differential-pulsed voltammetry (DPV), and multiple-pulsed amperometry proved the electrocatalytic effect to capecitabine oxidation and reduction and allowed its electrochemical detection in alkaline aqueous solution.

The decomposition of the oxalate precursor and the stability and reduction of the YBa2Cu4O8 superconductor studied by TG coupled with FTIR and by XRD

1993 ◽  
Vol 40 (1) ◽  
pp. 303-311 ◽  
Author(s):  
J. Mullens ◽  
A. Vos ◽  
A. De Backer ◽  
D. Franco ◽  
J. Yperman ◽  
...  
Keyword(s):  
Oxalate Precursor ◽  
The Stability
Sign in / Sign up

Export Citation Format

Share Document