scholarly journals X-ray / gamma ray radiation shielding properties of α-Bi2O3 synthesized by low temperature solution combustion method

2021 ◽  
Author(s):  
B. Chinnappa Reddy ◽  
H.C. Manjunatha ◽  
Y.S. Vidya ◽  
K.N. Sridhar ◽  
U. Mahaboob Pasha ◽  
...  
Keyword(s):  
Low Temperature ◽  
Gamma Ray ◽  
Combustion Method ◽  
Radiation Shielding ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
X Ray ◽  
Temperature Solution ◽  
Shielding Properties

scholarly journals Catalytic oxidation of CO over CuO/CeO2 nanocomposites synthesized via solution combustion method: effect of fuels

2020 ◽  
Vol 59 (1) ◽  
pp. 131-143 ◽  
Author(s):  
Thanh Son Cam ◽  
Tatyana Alekseevna Vishnievskaia ◽  
Vadim Igorevich Popkov
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Combustion Method ◽  
X Ray Diffraction ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
X Ray ◽  
Low Temperature Co Oxidation ◽  
Temperature Programmed ◽  
Adsorption Desorption

AbstractA series of CuO/CeO2 catalysts were successfully synthesized via solution combustion method (SCS) using different fuels and tested for CO oxidation. The catalysts were characterized by energy-dispersive X-ray analysis (EDXA), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), N2 adsorption-desorption isotherms and H2 temperature-programmed reduction (H2-TPR). It was found that the used fuels strongly affected the characterization and the low-temperature reduction behavior of CuO/CeO2 catalysts. The CuO/CeO2-urea catalyst exhibited higher catalytic activity toward CO oxidation (t50=120∘C, t100=159∘C) than the 5 other synthesized catalysts. In addition, the CuO/CeO2-urea catalyst displayed high stability for CO oxidation during five cycles and water resistance. The enhanced catalytic CO oxidation of the synthesized samples can be attributed by a combination of factors, such as smaller crystallite size, higher specific surface area, larger amount of amorphous copper(II) oxide, more mesoporous and uniform spherical-like structure. These findings are worth considering in order to continue the study of the CuO/CeO2 catalyst with low-temperature CO oxidation.

scholarly journals Solution combustion synthesis and enhanced gas sensing properties of porous In2O3/ZnO heterostructures

RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34482-34487 ◽  
Author(s):  
Xinwei Zou ◽  
Xiaoyan Yan ◽  
Guomin Li ◽  
Yuming Tian ◽  
Mingang Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Combustion Synthesis ◽  
Gas Sensing ◽  
Solution Combustion Synthesis ◽  
Combustion Method ◽  
Solution Combustion ◽  
Gas Sensitivity ◽  
Solution Combustion Method ◽  
Gas Sensing Properties ◽  
Temperature Solution

Self-assembled porous In2O3/ZnO heterostructures are synthesized via a low temperature solution combustion method. An extremely high gas sensitivity can be reached when exposed to Cl2 at 370 °C.

Development and Catalytic Application of Palladium Doped Titania (Ti0.98Pd0.02O2) Through Low Temperature Solution Combustion Method

2018 ◽  
Vol 24 (8) ◽  
pp. 6004-6007
Author(s):  
G. O Obaiah ◽  
K. H Shivaprasad ◽  
K. Srikanth Bhat ◽  
M. S Hegde ◽  
M Mylarappa
Keyword(s):  
Low Temperature ◽  
Metal Oxide ◽  
Combustion Method ◽  
Catalytic Performance ◽  
Palladium Chloride ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
Temperature Solution ◽  
Size And Morphology ◽  
Doped Titania

The objective of the research was mainly focused on development of TiO2 and Palladium doped TiO2 by low temperature solution combustion method using glycine as fuel. Palladium substituted Titania (Ti0.98Pd0.02O2) was prepared by taking stoichiometric amounts of titanyl nitrate, palladium chloride and glycine by solution combustion method. The accurate size and morphology of the doped metal oxide was studied Scanning electron microscope (SEM). The phase composition of the palladium substituted Titania (Ti0.98Pd0.02O2) was confirmed from powder X-ray Diffractometer (PXRD). The functional groups are analyzed by Fourier transfer infrared spectroscopy. The doped metal oxide shows superior catalytic performance.

scholarly journals Improvement of the Photocatalytic Activity of ZnO/Burkeite Heterostructure Prepared by Combustion Method

Catalysts ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 817 ◽  
Author(s):  
A. Luna-Flores ◽  
M.A. Morales ◽  
R. Agustín-Serrano ◽  
R. Portillo ◽  
J.A. Luna-López ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Combustion Method ◽  
X Ray Diffraction ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
X Ray ◽  
Sem Image ◽  
Particle Aggregates ◽  
One Step ◽  
Ph Dependent

In this work, a novel route is discussed to produce in one step ZnO/Burkeite powders by the modified solution combustion method. The ZnO particles enhance the photocatalytic activity in the degradation of Rhodamine B, in which Burkeite mineral acts as a support due to the pH-dependent morphology of the particle aggregates of the as-synthesized powders. The X-ray diffraction (XRD) characterization shows the presence of a heterostructure: ZnO/Burkeite. The Scanning Electron Microscopy (SEM) image shows a morphological dependence with the pH of the solution used for the synthesis. The results show that the system with the highest degradation (92.4%) corresponds to the case in which ZnO/Burkeite heterostructure was synthesized with a pH 11.

RAPID SYNTHESIS OF PURE AND Pr-DOPED TiCeO4 NANOPIGMENTS BY SOLUTION COMBUSTION METHOD

NANO ◽  
2011 ◽  
Vol 06 (02) ◽  
pp. 139-144 ◽  
Author(s):  
S. P. CHANDINI SAM ◽  
V. S. PRASAD ◽  
K. SUDARSANA KUMAR
Keyword(s):  
Combustion Method ◽  
Solution Combustion ◽  
Advanced Ceramics ◽  
Rapid Synthesis ◽  
Solution Combustion Method ◽  
Ecological Pigments ◽  
X Ray ◽  
Transmission Electron ◽  
Red Color ◽  
High Reflectance

Combustion synthesis has emerged as a facile and economically viable technique for the preparation of advanced ceramics, catalysts and nanomaterials. This paper is the report of the investigations carried out on the synthesis of titania–rare-earth mixed oxide pigments: TiCe 1-x Pr x O 4-δ by the solution combustion method and their characterization by X-ray powder diffraction, transmission electron microscopy, reflectance spectral data, thermal analysis and surface area measurements. The synthesized nanopigments exhibit yellow to brick red color with the increase of praseodymium content. The dominant reflectance of these pigments lies above a wavelength of 600 nm. These pigments are found to be promising candidates as ecological pigments because of their high reflectance, lightness and intense coloration.

Synthesis, Characterization and Photoluminescence Properties of CdSiO3:Ce3+ Nanophosphors

2015 ◽  
Vol 830-831 ◽  
pp. 612-615 ◽  
Author(s):  
R.B. Basavaraj ◽  
H.J. Amith Yadav ◽  
H. Nagabhushana ◽  
S.C. Prashantha ◽  
K.S. Anantharaju ◽  
...  
Keyword(s):  
Solution Combustion Synthesis ◽  
Average Crystallite Size ◽  
Combustion Method ◽  
Color Temperature ◽  
Yellow Emission ◽  
High Porosity ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
Temperature Solution ◽  
Photoluminescence Studies

CdSiO3: Ce3+ (1-11mol %) nanophosphors were prepared by low temperature solution combustion method using Oxalyl di-hydrazine (ODH) as fuel. The final products were well characterized by PXRD and SEM. The optical properties of the nanophosphors were investigated by Photoluminescence studies. PXRD results evident that CdSiO3 phosphor shows pure single monoclinic structure. The average crystallite size was calculated using Debye – Scherer’s formula and was found to be in the range of 30-40 nm. The SEM micrographs show phosphors with high porosity and irregular shaped particles. Photoluminescence peaks observed at 454, 563 and 679 nm under 397 nm excitation was due to transition from 5d state to the 2F5/2 and 2F7/2 components of the ground state of Ce3+ in CdSiO3 host material. CdSiO3:Ce3+ nanophosphors show an intense yellow emission with CIE coordinates (0.47, 0.50) with average correlated color temperature value 3284 was within the range of vertical day light. The present study successfully demonstrates solution combustion synthesis of nanophosphors for display applications.

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