scholarly journals Characterization of Copper Phthalocyanine-Tetrasulfonic Acid Tetrasodium Salt /Graphene Oxide

2021 ◽  
pp. 1893-1900
Author(s):  
Mayada Waheed Kazem ◽  
Raed Kamel Jalal
Keyword(s):  
Graphene Oxide ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Copper Phthalocyanine ◽  
Chemical Compounds ◽  
Ir Absorption ◽  
Mixing Ratios ◽  
Coating Method ◽  
Ft Ir

In this paper, the pure graphene oxide and copper phthalocyanine-tetrasolfonic acid tetrasodium salt were used to prepare thin films by using the spin coating method. These chemical compounds have remarkable optical properties and are chemically used in the development of device sensors by increasing the mixing ratio. Three different mixing ratios were prepared at room temperature and 150oC annealing temperature for three hours. The spectra of UV-VIS-IR absorption, photoluminescence, and Fourier-transformed infrared (FT-IR) were studied.

Synthesis and characterization of MnO2nanowires

2017 ◽  
Vol 31 (02) ◽  
pp. 1750006 ◽  
Author(s):  
Mohammad Hossein Ghorbani ◽  
Abdol Mahmood Davarpanah
Keyword(s):  
Lithium Batteries ◽  
Manganese Oxides ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
X Ray Diffraction ◽  
X Ray ◽  
Xrd Method

Manganese oxides are of more interest to researchers because of their ability as catalysts and lithium batteries. In this research, MnO2nanowires with diameter about 45 nm were synthesized by sol–gel method at room temperature (RT). Effect of increasing the annealing temperature from 400[Formula: see text]C to 600[Formula: see text]C on crystalline structure of nanostructure were studied and average crystallite size was estimated about 22 nm. X-ray Diffraction (XRD) method, Energy-Dispersive X-ray Diffraction (EDXD), Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM) were used to characterize the nanowires of MnO2.

Room temperature highly sensitive chlorine sensor based on reduced graphene oxide anchored with substituted copper phthalocyanine

2021 ◽  
Vol 327 ◽  
pp. 128925
Author(s):  
Sanjeev Kumar ◽  
Anshul Kumar Sharma ◽  
Manreet Kaur Sohal ◽  
Davinder Pal Sharma ◽  
A.K. Debnath ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Copper Phthalocyanine ◽  
Reduced Graphene ◽  
Highly Sensitive

STRUCTURAL AND OPTICAL CHARACTERIZATION OF ZnO SINGLE CRYSTALLINE NANOBAMBOOS

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2804-2810 ◽  
Author(s):  
LEI MIAO ◽  
SAKAE TANEMURA ◽  
YASUHIKO HAYASHI ◽  
MASAKI TANEMURA ◽  
RONGPING WANG ◽  
...  
Keyword(s):  
Room Temperature ◽  
Annealing Temperature ◽  
Optical Characterization ◽  
Growth Direction ◽  
Annealed Sample ◽  
Green Band ◽  
Post Annealing ◽  
High Resolution Tem ◽  
Post Annealing Temperature

ZnO nanobamboos and nanowires with diameters of 10–30 nm and lengths of 2–4 μm have been prepared by laser ablation in vacuum with precisely controlled pressure, growth and post-annealing temperature. XRD results show the annealed sample is hexagonal ZnO . Low-magnified TEM observation reveals the annealed sample includes ZnO nanobamboos and nanowires. High resolution TEM image and electron diffraction pattern confirm that the structure of ZnO nanobamboo is regular stacking of Zn and O layers with high crystal quality. The growth direction is determined as along [001] direction (c axis). TEM observations confirm that the formation of bamboo-shape ZnO is due to the stacking fault and cleavage. The bundle of those stacking faults seems to be the origin of the black contrast at the nodes. The uniformity of chemical composition for the nanobamboos is identified by EDS profiles. A strong-narrow UV band centred at 390 nm and a weak-broad green band centred at 515 nm are observed at room temperature in the PL spectrum recorded from the annealed ZnO nanobamboos and nanowires.

Preparation and characterization of iron(III) 99Mo-molybdate(VI) gels for the assessment of 99mTc elution performance

2018 ◽  
Vol 106 (1) ◽  
pp. 47-57 ◽  
Author(s):  
Mahmoud Amin ◽  
Tharwat W. Fasih ◽  
Mohamed A. El-Absy
Keyword(s):  
Room Temperature ◽  
Saline Solution ◽  
Mixed Solution ◽  
Filtration Method ◽  
Chromatographic Columns ◽  
Water Of Hydration ◽  
Ambient Room Temperature ◽  
Ft Ir ◽  
Mo Content

AbstractNew iron(III)99Mo-molybdate(VI) gels (Fe99Mo) of high Mo content were prepared by the precipitation/filtration method.99Mo–MoO3dissolved in NaOH was added to aqueous solutions of Fe(NO3)3at Mo/Fe mole fractions ~2.21 and 1.99 with continuous stirring at ambient room temperature. Two different Fe99Mo were precipitated from the mixed solutions adjusted at pH 2 and 4.7. The amount of water of hydration increased with the increasing the gel settling time and pH of the mixed solution. The matrices were characterized by radiometric, XRD, SEM, XRF, FT-IR, TGA, and DTA measurements. Small chromatographic columns of 2.0 g Fe99Mo containing ≥800 mg Mo tagged with 740 MBq99Mo were eluted with 5 mL saline solution. Highly reproducible99mTc elution indices suitable for preparation of99Mo/99mTc generators were achieved from generator supported with 0.5 g Al2O3filter. Elution performance of99mTc radionuclide was highly dependent on the gel structural properties.

Synthesis and Characterization of Novel Fluorene-Based Poly(Imino Ketone)s

2011 ◽  
Vol 335-336 ◽  
pp. 1086-1089
Author(s):  
Lin Zhang ◽  
Guan Jun Chang ◽  
Lu Bin Miao ◽  
Run Xiong Lin
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Main Chain ◽  
High Glass Transition Temperature ◽  
Good Solubility ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ft Ir ◽  
Ether Ketone

Fluorene-based poly(imino ketone)s (PIKF) were designed and synthesized by reacting 1,4-Bis-(4-bromobenzoyl)-benzene and 9,9-bis(3-R-4-aminophenyl)fluorine (R: H, CH3 or F). The structures of the resulting polymers were characterized by FT-IR, 1H NMR spectroscopy and elemental analysis. The thermo and optical properties of PIKF were evaluated. Good solubility of PIKF in ordinary organic solvents such as THF and chloroform was confirmed. PIKF were amorphous at room temperature. No phase transition except for Tg was confirmed in the DSC analysis. PIKF displayed a high glass transition temperature (Tg > 215 °C) in comparison with commercially available poly(ether ether ketone) (PEEK Tg = 169 °C). The UV-vis absorption spectrum of polymers exhibited two absorption peaks around 271 nm and 369 nm; The fluorescence spectrum of the PIKF-1, 2 and PIKF-3 showed a maximum emission wavelength at 502 nm and 491 nm, respectively. These optical properties were probably related to the cardo structure of the fluorene moiety placed on the main chain.

Electrical Characterization of Al Implanted 4H-SiC Layers by Four Point Probe and Scanning Capacitance Microscopy

2009 ◽  
Vol 615-617 ◽  
pp. 457-460 ◽  
Author(s):  
Filippo Giannazzo ◽  
Martin Rambach ◽  
Dario Salinas ◽  
Fabrizio Roccaforte ◽  
Vito Raineri
Keyword(s):  
Room Temperature ◽  
Annealing Temperature ◽  
Electrical Characterization ◽  
Electrical Activation ◽  
Force Microscopy ◽  
Atomic Force ◽  
Activation Data ◽  
Accurate Comparison ◽  
Spike Anneal

We studied the evolution of the electrical activation with annealing temperature and time in 4H-SiC implanted with Al ions at room temperature (RT). An accurate comparison between the electrical activation data obtained by FPP and SCM was carried out. The dependence of the electrically active profiles on annealing time was studied during isothermal (Tann=1600 °C) annealings for times ranging from 0 (spike anneal) to 30 min. By performing isochronal (t=30 min) processes at temperatures from 1550 to 1650 °C, the effect of the annealing temperature on the net doping concentration profiles was studied. Moreover, the activation energy (6.30.3 eV) associated to the process was extracted from the Arrhenius plot of the net active dose. Finally, the effect of the different thermal budgets on the roughening of the Al implanted 4H-SiC surface was also investigated in details by atomic force microscopy.

IR SPECTRAL INVESTIGATION OF THE xCuO(100 - x)[2B2O3 · As2O3] GLASS SYSTEM

2001 ◽  
Vol 15 (12n13) ◽  
pp. 385-390
Author(s):  
I. ARDELEAN ◽  
RALUCA CICEO-LUCACEL
Keyword(s):  
Vibrational Spectra ◽  
Glass Matrix ◽  
Room Temperature ◽  
Wave Number ◽  
Local Order ◽  
Ir Absorption ◽  
Monoclinic Form ◽  
Ir Absorption Spectra ◽  
Ft Ir ◽  
Wave Number Region

The infrared (FT–IR) absorption spectra for the glasses of the x CuO (100 - x)[ 2B 2 O 3 · As 2 O 3] system with 0 ≤ x ≤ 30 mol% CuO were measured in the wave number region 500–4000 cm -1 at room temperature following the KBr pellet techniques. The aim was to obtain information about the influence of CuO on the local order of the 2B 2 O 3 · As 2 O 3 glass matrix. The interpretation of the obtained vibrational spectra revealed the presence of BO 3, BO 4 units, boroxol rings and the monoclinic form of vitreous As 2 O 3 in the structure of investigated glasses.

scholarly journals Fabrication and Characterization of Polyvinyl Chloride/Copolyester/Nanoclay Composite Nanofiber

2021 ◽  
Vol 33 (8) ◽  
pp. 1868-1874
Author(s):  
S. Jasmine ◽  
D. Reuben Jonathan ◽  
J. Sidharthan ◽  
D. Roopsingh
Keyword(s):  
Polyvinyl Chloride ◽  
Room Temperature ◽  
Composite Nanofibers ◽  
Schmidt Reaction ◽  
Electrospinning Method ◽  
Composite Nanofiber ◽  
Nmr Techniques ◽  
Ft Ir ◽  
Acid Catalyzed

Four random copolyesters were prepared by the polycondensation reaction of diols namely 1,5-dihydroxyanthraquinone, 4,4′-oxybis(benzoic acid) and variable chalcone diol. Four chalcone diols were produced by acid catalyzed Claisen-Schmidt reaction at room temperature. These random copolyesters were elucidated by solubility tests and viscosity measurements. The FT-IR, 1H & 13C NMR techniques were applied to establish the repeating units present in the copolyester backbone. Electrospinning method was employed to derive polyvinyl chloride-copolyester-nanoclay composite nanofiber from tetrahydrofuran medium. Scanning electron microscopy (SEM) was utilized to examine the morphology of the nanofibers. These composite nanofibers are expected to be a potential biomaterial of greater significance.

Synthesis and Characterization of Structure of Fe3O4@Graphene Oxide Nanocomposites

2016 ◽  
Vol 25 (6) ◽  
pp. 096369351602500 ◽  
Author(s):  
Ruimin Fu ◽  
Mingfu Zhu
Keyword(s):  
Graphene Oxide ◽  
Drug Carrier ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Ft Ir ◽  
Co Precipitation ◽  
Ft Ir Spectroscopy

Nowadays, the hummers method for preparation of graphene oxide (GO) was improved. The grapheme oxide @ Fe3O4 magnetic nanocomposites were synthesized by co-precipitation method. After analysing the morphology and structure of obtained nanocomposites by X-ray diffraction (XRD), transmission electron microscope (TEM) and Fourier transform infrared (FT-IR) spectroscopy, the result was shown as follows. The particle size of Fe3O4 in nanocomposites is 30 nm. Many functional groups are found in grapheme oxide, and such groups could be used to bind with the drug. In the test for magnetic properties, the nanocomposites gathered rapidly in the vicinity of the permanent magnet. The nanocomposites, with high superparamagnetism, can be used in the following applications: drug targeting transports, drug carrier, and diagnosis assistant system.

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