Synthesis and characterization of cobalt antimonate nanostructures and their study as potential CO and CO2 sensor at low temperatures

2018 ◽  
Vol 29 (18) ◽  
pp. 15632-15642 ◽  
Author(s):  
Alex Guillén-Bonilla ◽  
Oscar Blanco-Alonso ◽  
José Trinidad Guillén-Bonilla ◽  
M. de la Luz Olvera-Amador ◽  
Verónica M. Rodríguez-Betancourtt ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Synthesis And Characterization ◽  
Co2 Sensor

Synthesis and Characterization of Ruteno-Cuprates by Solid State Reactions

2008 ◽  
Vol 591-593 ◽  
pp. 644-648
Author(s):  
J.M.A. Gimenez ◽  
Carlos Roberto Grandini ◽  
A.R. Jurelo
Keyword(s):  
Solid State ◽  
Low Temperatures ◽  
Magnetic Transition ◽  
Solid State Reactions ◽  
Synthesis And Characterization ◽  
Superconducting Properties ◽  
New Class ◽  
Preparation Conditions ◽  
Magnetic States

A new class of hybrid ruteno-cuprates – such as Ru-1212 and Ru-1222 – was discovered in 1995 by Bauerfeind and collaborators. These materials present superconducting and magnetic states at low temperatures, an atypical duality in other superconductors. The superconductivity is more easily observed in Ru-1222, while Ru-1212 is a more problematic case, due to the strong effects of the preparation details in its superconducting properties, becoming the material superconductor or not. Ru-1212 presents a critical temperature that can vary between 0 and 46 K, depending on the preparation conditions, and a temperature of magnetic transition of around 132 K. The samples were prepared through solid state reactions, by using a mixture of high purity powders, followed by calcination and sinterization in the nitrogen and oxygen atmospheres. This paper shows the preparation process of Ru-1212 samples, followed by their structural and magnetic characterization.

Synthesis and Characterization of Nano Titania Powder with High Photoactivity for Gas-Phase Photo-oxidation of Benzene from TiOCl2Aqueous Solution at Low Temperatures

Langmuir ◽  
2004 ◽  
Vol 20 (25) ◽  
pp. 10838-10844 ◽  
Author(s):  
Yuanzhi Li ◽  
Nam-Hee Lee ◽  
Doo-Sun Hwang ◽  
Jae Sung Song ◽  
Eun Gu Lee ◽  
...  
Keyword(s):  
Gas Phase ◽  
Low Temperatures ◽  
Synthesis And Characterization ◽  
Photo Oxidation ◽  
Titania Powder ◽  
Oxidation Of Benzene

scholarly journals Synthesis and characterization of some nanostructured composite oxides for low temperature catalytic combustion of dilute propane

RSC Advances ◽  
2017 ◽  
Vol 7 (45) ◽  
pp. 27863-27871 ◽  
Author(s):  
C. Doroftei ◽  
L. Leontie
Keyword(s):  
Low Temperatures ◽  
Catalytic Combustion ◽  
Sol Gel ◽  
Catalytic Performance ◽  
Synthesis And Characterization ◽  
Propane Combustion ◽  
Nanostructured Composite ◽  
Composite Oxides ◽  
Combustion Technique

Five nanosized perovskite and four ferrospinel powders were prepared by sol–gel self-combustion technique. The La0.6Pb0.2Mg0.2MnO3 perovskite was found to exhibit the best catalytic performance with respect to propane combustion at low temperatures.

scholarly journals Synthesis and Characterization of Reduced Graphene Oxide from Fiber of Borassus Flabelifer by Activation Method

2019 ◽  
Vol 16 (1) ◽  
pp. 17
Author(s):  
Fandi Angga Prasetya ◽  
Ufafa Anggarini ◽  
Salim Mustofa ◽  
Syarifatus Sholihah ◽  
Fathur Iqbal ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Temperatures ◽  
Low Temperatures ◽  
Phase Changes ◽  
Synthesis And Characterization ◽  
Calcination Process ◽  
Reduced Graphene ◽  
Phase Differences

Reduced Graphene Oxide (RGO) has been successfully synthesized by calcination process at 4000C for 4 hours followed by activation with NaOH 1 M. Carbonization is the last process with variations in heating at 6500C, 7500C, 8500C, and 9500C for 1 hour (heating rate 100C / minute). DSC-TGA data shows that there is advanced decomposition at high temperatures, this is confirmed by SEM data which shows the amount of porosity which is getting higher with a size that decreases with temperature. XRD data shows phase differences at low temperatures with a trend of higher levels of crystallinity at high temperatures. Raman spectroscopy data showed an ID / IG ratio of 2.607 and 1.007 on Borassus Flabelifer L with carbonization at 6500C and 9500C respectively. The ID / IG value which is getting closer to 1 indicates that the carbon available in Borassus Flabelifer L has undergone phase changes such as Graphene with a little Oxide commonly called RGO

Synthesis and characterization of the rare-earth Dion–Jacobson layered perovskites, APrNb2O7 (A = Rb, Cs and CuCl)

2015 ◽  
Vol 44 (23) ◽  
pp. 10654-10660 ◽  
Author(s):  
Dariush Montasserasadi ◽  
Mark W. Granier ◽  
Leonard Spinu ◽  
Satish Chandra Rai ◽  
Weilie Zhou ◽  
...  
Keyword(s):  
Rare Earth ◽  
Low Temperatures ◽  
Synthesis And Characterization ◽  
Layered Perovskites ◽  
Antiferromagnetic Behavior ◽  
The Rare Earth

The Dion–Jacobson type layered perovskites, APrNb2O7 (A = Rb, Cs), can be readily exchanged with (CuCl)+ at low temperatures to produce, (CuCl)PrNb2O7, a compound that shows interesting 2D antiferromagnetic behavior.

scholarly journals Synthesis and Characterization of ZnO Nanorod Films on PET for Photocatalytic Disinfection of Water

2015 ◽  
Vol 18 (2) ◽  
Author(s):  
Luis Sanchez ◽  
Lucas Guz ◽  
Pilar García ◽  
Silvia Ponce ◽  
Silvia Goyanes ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Zno Nanorods ◽  
Synthesis And Characterization ◽  
Zno Nanorod ◽  
Photocatalytic Disinfection

AbstractZnO nanorods (ZnO NRs) were grown on ZnO seeded polyethylene tert-phtalate (PET) substrates obtained from recycled soda bottles at low temperatures (90 °C) from Zn

Adamantane-Modified Polyurethanes: Effect of Hydroxy Group of Adamantane on the Properties of Polyurethanes

2015 ◽  
Vol 1110 ◽  
pp. 92-95 ◽  
Author(s):  
Ze Ren Lau ◽  
Sau Leng Sin ◽  
Hong Yan ◽  
Jian Wei Xu
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Dynamic Mechanical Analysis ◽  
Storage Modulus ◽  
Low Temperatures ◽  
Mechanical Analysis ◽  
Synthesis And Characterization ◽  
Hydroxy Groups

The paper describes synthesis and characterization of adamantane-modified polyurethanes (PU). The study shows that the number of hydroxy groups of adamantane additives plays a signifiant role in tuning polyurethane's properties. PU modified with adamantanetriol has relatively higher glass transition temperature than these with adamantanediol as an additive. Dynamic mechanical analysis (DMA) of PU with 0.5% adamantanetriol shows significant improvement in storage modulus and larger hardness than pure PU at low temperatures. In contrast, adamantanediol-modified PU exhibits lower storage modulus and smaller hardness than pure PU film. These remarkabe differences between two types of admantane-modified PUs originate from the low reactivity of adamantanediol as well as the formation of crosslinked structures in the presence of adamantanetriol.

Synthesis and characterization of boron–oxygen–hydrogen thin films at low temperatures

2005 ◽  
Vol 40 (8) ◽  
pp. 1345-1352 ◽  
Author(s):  
D. Music ◽  
H. Kölpin ◽  
A. Atiser ◽  
U. Kreissig ◽  
T. Bobek ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperatures ◽  
Synthesis And Characterization

Synthesis and Characterization of Multiferroic Composites Based on Manganate Perovskite Ceramics

2007 ◽  
Vol 1034 ◽  
Author(s):  
Gonbao Song ◽  
Jian Li ◽  
Andrei Kholkin
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Low Temperatures ◽  
Monoclinic Phase ◽  
Hexagonal Phase ◽  
Ferroelectric Properties ◽  
Synthesis And Characterization ◽  
Space Group ◽  
Perovskite Ceramics

AbstractIn this paper, phase separation and crystal structure of (x) La0.625Sr0.375MnO3 − (1-x) LuMnO3 system (LSMO-LMO), and (1-x) La0.9Ca0.1MnO3-(x) LuMnO3 system (LCMO-LMO) were studied by XRD and SEM. The results confirm that there are solid solutions in both of these two systems. There is a solid solution of monoclinic phase of space group P1121/a for x=0.980∼1.0 in LSMO-LMO system. There is a solid solution of hexagonal phase of space group P63cm for x=0.0∼0.24 in LCMO-LMO. Selected compositions were tested in terms of their magnetization, dielectric constant and ferroelectric properties at low temperatures.

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