scholarly journals Preparation and Characterization of TiO2 Nanostructure by TiCl4 Hydrolysis with Additive NaOH

2018 ◽  
Vol 28 (2) ◽  
pp. 100 ◽  
Author(s):  
Rashed Taleb Rasheed
Keyword(s):  
Sodium Hydroxide Solution ◽  
Water Solution ◽  
Ultra Violet ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
Atomic Force ◽  
Alcohol Water ◽  
Ft Ir ◽  
Hydrolysis Of

Titanium dioxide (TiO2) nanostructures were synthesized via the hydrolysis of TiCl4 in alcohol / water solution/with sodium hydroxide solution in the ice-bath (0-5 ◦C). The particles were char-acterized by using X-ray diffraction technique (XRD), spectroscopy of Ultra Violet-Visible (UV / Visible) and infrared (FT-IR), atomic force microscope (AFM) and scanning electron micro-scope (SEM) analysis were used in order to gain information about the material, morphology, size and the shape of the particles

Preparation and Characterization of TiO2 Nanoparticle with SiO2 Shell

2011 ◽  
Vol 233-235 ◽  
pp. 1188-1191
Author(s):  
Hong Cai ◽  
Yan Chen ◽  
Yun Ying Wu
Keyword(s):  
Photoelectron Spectroscopy ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Chemical Components ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Bonding Phase ◽  
Hydrolysis Of

Nano-TiO2 particles were prepared by sol-gel method, of which the surfaces were coated by SiO2. The coating was achieved by the hydrolysis of sodium silicate (Na2SiO3) in ammonium chloride (NH4Cl). The surface bonding, phase constitution and chemical components of the samples were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction(XRD) and X-ray photoelectron spectroscopy (XPS). The mechanism of the SiO2 coating process onto TiO2 surface was analyzed. Results show that SiO2 particles were immobilized on the TiO2 surface via Ti—O—Si bondings, which formed at the interface. The SiO2 layer on TiO2 surface was amorphous, the photocatalytic performance was decreased of the TiO2 while its stability was enhanced after surface modification.

scholarly journals Synthesis and Characterization of Nanostructure Tio2/Anthraquenone (AQ) Prepared by Sol-Gel Method

2017 ◽  
Vol 28 (1) ◽  
pp. 76
Author(s):  
Fadhela M. Hussein
Keyword(s):  
Sol Gel ◽  
X Ray Diffraction ◽  
First Order ◽  
Atomic Force ◽  
Rate Of Reaction ◽  
Ft Ir ◽  
Gel Technique ◽  
Uv Visible ◽  
Nano Titanium Dioxide

sol–gel technique conducted to synthesize nano titanium dioxide with anthraquenone (AQ) relatively in acidic pH. Nanoparticles were characterized using techniques like, Scanning Electrion Microscope (SEM), Atomic Force Microscope (AFM), UV-Visible Spectrioscopy, X-ray diffraction (XRD), Fourier transform infrared (FT-IR), SEM picture display that the TiO2/AQ is spherical in style, the band gap of TiO2/AQ nanoparticle is (3.05eV), BET and BJH analysis provides Pore volume and specific Surface area and the kinetic studie Suggest that the reaction is pseudo first order and the rate of reaction was reduce with rising initial concentration for p-Nitrotolune.

Characterization of SrxBa1−xTiO3 Pulsed Laser Deposition Thin Films

1996 ◽  
Vol 433 ◽  
Author(s):  
W Pérez ◽  
Sampriti Sen ◽  
J. Cordero ◽  
E. Ching-Prado ◽  
R.S. Katiyar ◽  
...  
Keyword(s):  
Thin Films ◽  
Sem Analysis ◽  
Laser Deposition ◽  
X Ray Diffraction ◽  
High Concentration ◽  
X Ray ◽  
Ir Reflection ◽  
Frequency Position ◽  
Ft Ir

AbstractThin films of SrTiO3 (STO) and SrxBa1−xTiO3 (SBT) with x = 0.35, 0.5, 0.9, and prepared by excimer laser deposition on LaAlO3 and MgO were studied. SEM analysis indicates that the surfaces of these films are smooth with isolated pores, except the SBT(x=0.5)/LaAlO3 sample, where a high concentration of large pores was found. X-ray diffraction (XRD) results show well oriented films. External FT-IR reflection studies reveals a band around 500 cm−x, which shows a significant frequency shift with increasing component concentration. Also, this IR-reflectivity band presents no changes between the SBT(x=0.9)/LaALO3 sample annealed at 750°C and the same film annealed at 850°C. On other hand, the STO/LaAlO3 and STO/MgO films show differences in frequency position of this reflectivity band. Raman spectra of the SBT sample with x ≥ 0.35 show broad bands associated with the BaTiO3 (BTO) material. However, all the phonons bands are broader than those in BTO, in particular the band around 309 cm−. Raman results suggest that the spectrum is a consequence of a breakdown in the translational symmetry due to defects. Raman scattering also indicates a similarity between SBT(x=0.9) at 750°C and that at 850°C. Micro-Raman and EDX analysis show that STO/MgO and SBT(x=0.35)/LaAlO3 films are close to the expected stoichiometry, while STO/LaAlO3 and SBT(x=0.9) films present deficiencies of titanium and oxygen.

scholarly journals Production and Characterization of Activated Carbon from Baobab Fruit Shells by Chemical Activation Using ZnCl2, H3PO4 and KOH

2021 ◽  
Vol 2129 (1) ◽  
pp. 012009
Author(s):  
R Nedjai ◽  
N A Kabbashi ◽  
M Z Alam ◽  
M F R Al-Khatib
Keyword(s):  
Activated Carbon ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Xrd Analysis ◽  
Surface Characteristic ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
Ft Ir ◽  
Characterization Of Activated Carbon

Abstract Chemical agents have a good influence on the formation of activated carbons, surface characteristic, and its adsorption properties. In this study, the effect of activating agents (ZnCl2, KOH, and H3PO4) on baobab fruit shell (BFS) were evaluated. The characteristics of the baobab fruit shell based activated carbon (BF-ACs) were evaluated through the yield and iodine number. BF-ACs were also characterized by Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), and nitrogen (N2) adsorption. SEM analysis illustrates those porous structures formed on the surface of BF-ACs were with different sizes. The XRD analysis show that the main structures of BF-ACs are amorphous. FT-IR data demonstrates the presence of different surface groups on the produced BF-ACs. Among activating agent, the KOH was observed to the most appropriate for the production of activated carbon with a large surface area (1029.44 m2/g) from baobab fruit shell.

Preparation and Characterization of Monodispersed BaTiO3 Nanocrystals Using One-Step Solvothermal Method

2011 ◽  
Vol 412 ◽  
pp. 82-85
Author(s):  
Hui Zhang ◽  
Xiao Hui Wang ◽  
Zhi Bin Tian ◽  
Cai Fu Zhong ◽  
Yi Chi Zhang ◽  
...  
Keyword(s):  
Solvothermal Method ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
High Resolution Tem ◽  
Dta Analysis ◽  
One Step ◽  
Ft Ir ◽  
Average Size ◽  
Hydrolysis Of

A convenient one-step solvothermal method has been developed to synthesize monodispersed barium titanate nanocrystals with an average size of 5 nm. The key point of this method is the controlling of hydrolysis of Ti (OC4H9)4with Diethylene glycol (DEG). The as-prepared BaTiO3nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), FT-IR and TG/DTA analysis. The monodispersed BaTiO3nanoparticles obtained by this method have an average size of 5 nm with a narrow size distribution and a lattice tetragonality of 1.0069, which is promising for the ferroelectric science and its industry application.

scholarly journals Chemical Synthesis and Characterization of Conducting Polyaniline

2020 ◽  
Vol 17 (1) ◽  
pp. 0106
Author(s):  
Hasoon Et al.
Keyword(s):  
Surface Composition ◽  
Optical Measurements ◽  
X Ray Diffraction ◽  
Direct Oxidation ◽  
X Ray ◽  
Atomic Force ◽  
Ft Ir ◽  
Crystalline Nature ◽  
Ft Ir Spectroscopy

     The polyaniline powder was chemically manufactured by direct oxidation of aniline. The resulting polymer was characterized by the results of optical, measurements by (FT-IR) spectroscopy, we have detected some of the absorption peaks located at 3498, 2858 cm-1, which correspond N-H vibrations, and C-H expansion of the aromatic ring respectively as well as stretching vibrations of quinoid ring have been observed. Structural properties, such as the surface topography using an atomic force microscope (AFM), and Surface composition by (SEM) have been studied. The structure of some pellets of polyaniline powder have been examined by using analytical X-ray diffraction technique, the pattern of observed lines shows a crystalline nature and three large peaks observed.

Characterization of Areva javanica fiber – A possible replacement for synthetic acrylic fiber in the disc brake pad

2018 ◽  
Vol 49 (3) ◽  
pp. 294-317 ◽  
Author(s):  
Md Javeed Ahmed ◽  
MA Sai Balaji ◽  
SS Saravanakumar ◽  
MR Sanjay ◽  
P Senthamaraikannan
Keyword(s):  
Wear Test ◽  
Disc Brake ◽  
Brake Pad ◽  
X Ray Diffraction ◽  
Acrylic Fiber ◽  
Force Microscopy ◽  
Atomic Force ◽  
Ft Ir

Areva javanica (AJ), a natural cotton flowers fiber of Amaranthaceae family was taken up for the study of its possible utilization in a friction composite. The chemical composition of Areva javanica fiber (AJF) such as cellulose, lignin, ash, moisture, wax content, and density was evaluated. In addition to these, Fourier transform infrared (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and differential scanning calorimeter (DSC) tests were performed. The surface roughness of AJ fiber was estimated using atomic force microscopy (AFM) and the statistical analysis using Weibull distribution was carried out to identify the diameter of AJ fiber. TGA studies revealed its moderate thermal resistance upto 219℃, and a density of 1.4005 g/cc was estimated of AJF. An attempt was made to make use of the AJF as a potential reinforcement material for acrylic fibers in an organic disc brake pad formulation. Upon fibrization, AJ fibrillates and forms a dense structure, a vital property required for the production of a brake pad. The role of AJ fiber in brake pad was studied by investigating the behavior of fibers from the mixing stage to the cured brake pad. Results revealed that the developed brake pad had a density of 2.01 g/cc, hardness HRS 91, Loss on ignition 21.68%, and cold and hot shear strengths of 44 and 27 kg/cm2, respectively. These values were very close to that of an Acrylic fiber based brake pad. The wear test using Friction Assessment and Screening test (FAST) gave the wear percentage of 0.0187 in3/Hp-h which was found to be 16% higher than AJF (0.0159 in3/Hp-hr) based brake pad.

scholarly journals Synthesis and Characterization of Hydrophilic gama-Fe2O3 Nanoparticles for Biomedical Applications

2019 ◽  
Vol 70 (6) ◽  
pp. 2026-2031
Author(s):  
Teodora Malaeru ◽  
Elena Enescu ◽  
Gabriela Georgescu ◽  
Delia Patroi ◽  
Eugen Manta ◽  
...  
Keyword(s):  
Heat Treating ◽  
Sem Analysis ◽  
Fe2o3 Nanoparticles ◽  
X Ray Diffraction ◽  
Raman Spectrometry ◽  
Structural Morphology ◽  
One Step ◽  
Ft Ir ◽  
Modified Polyol Method

The hydrophilic g-Fe2O3 nanoparticles coated with polyvinylpyrrolidone (PVP) were prepared in one step of the modified polyol method combined with an additional heat treating. The presence of maghemite (g-Fe2O3) phase was confirmed by using X-ray diffraction (XRD) and Raman Spectrometry on powder. FT-IR spectroscopy confirmed the presence of PVP on the nanoparticles surface and the Zeta potential also supported the coating of nanoparticles with a layer of PVP and a good stability in aqueous medium. SEM analysis showed that the prepared g-Fe2O3 nanoparticles have a spherical structural morphology with the tendency of agglomeration. Hysteresis loop shows a ferromagnetic behaviour at room temperature with a saturation magnetization up to 57 emu/g.

scholarly journals Synthesis and Structural Characterization of (E)-4-[(2-Hydroxy-3-methoxybenzylidene)amino]butanoic Acid and Its Novel Cu(II) Complex

Molbank ◽  
10.3390/m1179 ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. M1179
Author(s):  
Eleftherios Halevas ◽  
Antonios Hatzidimitriou ◽  
Barbara Mavroidi ◽  
Marina Sagnou ◽  
Maria Pelecanou ◽  
...  
Keyword(s):  
Schiff Base ◽  
Gamma Aminobutyric Acid ◽  
X Ray Diffraction ◽  
Reaction Conditions ◽  
Polymeric Compound ◽  
Bridging Ligands ◽  
1H And 13C Nmr ◽  
One Dimensional ◽  
Ft Ir

A novel Cu(II) complex based on the Schiff base obtained by the condensation of ortho-vanillin with gamma-aminobutyric acid was synthesized. The compounds are physico-chemically characterized by elemental analysis, HR-ESI-MS, FT-IR, and UV-Vis. The complex and the Schiff base ligand are further structurally identified by single crystal X-ray diffraction and 1H and 13C-NMR, respectively. The results suggest that the Schiff base are synthesized in excellent yield under mild reaction conditions in the presence of glacial acetic acid and the crystal structure of its Cu(II) complex reflects an one-dimensional polymeric compound. The molecular structure of the complex consists of a Cu(II) ion bound to two singly deprotonated Schiff base bridging ligands that form a CuN2O4 chelation environment, and a coordination sphere with a disordered octahedral geometry.

One Step Synthesis and Characterization of Zirconia-Graphene Composites

2012 ◽  
Vol 600 ◽  
pp. 174-177 ◽  
Author(s):  
Jian Fei Xia ◽  
Zong Hua Wang ◽  
Yan Zhi Xia ◽  
Fei Fei Zhang ◽  
Fu Qiang Zhu ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Graphene Composite ◽  
Transmission Electron ◽  
One Step ◽  
Ft Ir ◽  
Xrd Techniques

Zirconia-graphene composite (ZrO2-G) has been successfully synthesized via decomposition of ZrOCl2•6H2O in a water-isopropanol system with dispersed graphene oxide (GO) utilizing Na2S as a precursor could enable the occurrence of the deposition of Zr4+ and the deoxygenation of GO at the same time. Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) techniques were used to characterize the samples. It was found that graphene were fully coated with ZrO2, and the ZrO2 existing in tetragonal phase, which resulted in the formation of two-dimensional composite.

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