The Effect of Acetate on the Electrodeposition of Manganese on Polycrystalline Au without SeO2 Additives

2014 ◽  
Vol 937 ◽  
pp. 34-40
Author(s):  
Wen Po Li ◽  
Xiu Li Zuo ◽  
Jun Ying Yang ◽  
Sheng Tao Zhang
Keyword(s):  
Spectroscopic Ellipsometry ◽  
Quartz Crystal ◽  
Single Layer ◽  
Electrochemical Quartz Crystal Microbalance ◽  
X Ray Diffraction ◽  
Energy Dispersion Spectroscopy ◽  
X Ray ◽  
Composition And Structure ◽  
Single Layer Model

The influence of acetate additives on the mechanism of manganese electrodeposition from chloride-based acidic solution was investigated by electrochemical quartz crystal microbalance and spectroscopic ellipsometry. The EQCM data were represented as plots △m versusE.Because they are not affected by interference from the hydrogen evolution reaction, they clearly show the manganese reduction and oxidation processes. The in situ spectroscopic ellipsometry ( SE) data were analyzed with a single-layer model ( substrate Au - deposition Mn layer) and the thicknesses of Mn layer were obtained by fitting experimental data with the model.Morphology, chemical composition and structure of the manganese deposits were analyzed by scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS), and X-ray diffraction (XRD). The results showed that in the absence of acetate additives, Mn (OH)2is formed. In the presence of acetate additives, the formation of α-Mn was observed and the deposition rate of Mn electrodeposition on the Au electrode slowed down.

scholarly journals Intercalation of solvated Na-ions into graphite

2017 ◽  
Vol 10 (7) ◽  
pp. 1631-1642 ◽  
Author(s):  
L. Seidl ◽  
N. Bucher ◽  
E. Chu ◽  
S. Hartung ◽  
S. Martens ◽  
...  
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Electrochemical Quartz Crystal Microbalance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Graphite Intercalation ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy ◽  
Na Ions ◽  
In Operando

The reversible intercalation of solvated Na-ions into graphite and the concomitant formation of ternary Na–graphite intercalation compounds (GICs) are studied using several in operando techniques, such as X-ray-diffraction (XRD), electrochemical scanning tunnelling microscopy (EC-STM) and the electrochemical quartz crystal microbalance technique (EQCM).

Surface Structural Characterization and Mechanical Testing by Nanoindentation Measurements of Hybrid Polymer/clay Nanostructured Multilayer Films

2002 ◽  
Vol 17 (7) ◽  
pp. 1622-1633 ◽  
Author(s):  
Xiaowu Fan ◽  
Mi-Kyoung Park ◽  
Chuanjun Xia ◽  
Rigoberto Advincula
Keyword(s):  
Thin Films ◽  
Quartz Crystal ◽  
Ex Situ ◽  
Multilayer Thin Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Diallyldimethylammonium Chloride

Nanostructured montmorillonite/poly(diallyldimethylammonium chloride) multilayer thin films were fabricated up to 100 layers thick by stepwise alternating polyelectrolyte and clay deposition from solution. The structure and morphology of the films were characterized by x-ray diffraction, ellipsometry, atomic force microscopy, and quartz crystal microbalance ex situ and in situ measurements. The mechanical properties were tested by nanoindentation. The hardness of the multilayer thin film was 0.46 GPa. The thin film's modulus was correlated to its ordering and anisotropic structure. Both hardness and modulus of this composite film were higher than those of several other types of polymer thin films.

scholarly journals Progress in Microanalysis

2013 ◽  
Vol 21 (3) ◽  
pp. 7-7
Author(s):  
Charles Lyman
Keyword(s):  
Light Microscopy ◽  
Spatial Resolution ◽  
Equilibrium Phase ◽  
X Ray Diffraction ◽  
Bulk Analysis ◽  
X Ray ◽  
Analysis Techniques ◽  
Composition And Structure

Many researchers view microanalysis as the determination of composition and structure of individual phases at a spatial resolution of 1 μm or better. It is remarkable to me that much of what we know about the phases shown in equilibrium phase diagrams was determined using bulk analysis techniques like powder X-ray diffraction in combination with light microscopy of flat-polished sections of materials. The identities and amounts of phases were deduced from systematic experiments because there was no way to analyze micrometer-sized phases in situ.

scholarly journals In situ probing of the crystallization kinetics of rr-P3HT on single layer graphene as a function of temperature

2017 ◽  
Vol 19 (12) ◽  
pp. 8496-8503 ◽  
Author(s):  
Nicolas Boulanger ◽  
Victor Yu ◽  
Michael Hilke ◽  
Michael F. Toney ◽  
David R. Barbero
Keyword(s):  
Diffraction Analysis ◽  
Crystallization Kinetics ◽  
Single Layer ◽  
Single Layer Graphene ◽  
X Ray Diffraction ◽  
X Ray ◽  
Layer Graphene ◽  
Kinetics Of

In situ X-ray diffraction analysis of P3HT films during cooling down on both Si and G.

Fabrication of Microporous Apatite Coating on Titanium by a Novel Chemical Method

2005 ◽  
Vol 284-286 ◽  
pp. 231-234
Author(s):  
Bo Feng ◽  
Jie Weng ◽  
Shao Xing Qu ◽  
Xing Dong Zhang
Keyword(s):  
Calcium Phosphate ◽  
Photoelectron Spectroscopy ◽  
Chemical Method ◽  
Carbonate Apatite ◽  
X Ray Diffraction ◽  
Energy Dispersion Spectroscopy ◽  
X Ray ◽  
Composition And Structure ◽  
Microporous Coating ◽  
Apatite Coating

A microporous apatite coating was fabricated by a heat-oxidation and chemical routine. The morphology, composition and structure were characterized by scanning electron microscopy with X-ray energy dispersion spectroscopy, X-ray photoelectron spectroscopy and X-ray diffraction. The components of the coating were predominantly apatite, next tri-calcium phosphate and octa-calcium phosphate. The pore size ranged from 1µm to5µm. The thickness of the coating was about 6µm ~ 10µm. The microporous coating was Ca-deficient carbonate apatite.

On iodido bismuthates, bismuth complexes and polyiodides with bismuth in the system BiI3/18-crown-6/I2

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Silke Notter ◽  
Carsten Donsbach ◽  
Claus Feldmann
Keyword(s):  
Ionic Liquid ◽  
Optical Band Gap ◽  
Triethylene Glycol ◽  
Direct Reaction ◽  
X Ray Diffraction ◽  
Neutral Complex ◽  
X Ray ◽  
Composition And Structure ◽  
Metastable Compounds

Abstract The iodido bismuthates [Bi(18-crown-6)I2][BiI4] (1) and [Bi(18-crown-6)I2][Bi3I10] (2), the neutral complex [Bi(C6H14O4)I3](18-crown-6) (3) as well as the polyiodides [Bi(18-crown-6)I2][I5](18-crown-6) (4), [Bi(18-crown-6)I2]2[I14] (5) and [Bi(18-crown-6)I2]2[I19] (6) were prepared by reaction of BiI3, 18-crown-6, and I2 at T = 60–120 °C. The compounds 1–5 were prepared in [n-Bu3MeN][N(Tf)2] as an ionic liquid ([n-Bu3MeN]: tributylmethylammonium, [N(Tf)2]: bis(trifluoromethylsulfonyl)imide), whereas 6 was obtained only by direct reaction of the starting materials. The title compounds exhibit two different constitutions of the [Bi(18-crown-6)I2]+ cation as well as a non-charged, molecular [Bi(C6H14O4)I3] unit with a triethylene glycol ligand generated in situ by cleavage of the crown ether. Infinite chain-like [ BiI 2 / 1 I 4 / 2 ] − ∞ 1 ${}_{\infty }{}^{1}[{{\text{BiI}}_{2/1}{\text{I}}_{4/2}]}^{-}$ and [ Bi 6 I 18 / 1 I 4 / 2 ∞ 1 ] − ${{}_{\infty }{}^{1}[{\text{Bi}}_{6}{\text{I}}_{18/1}{\text{I}}_{4/2}]}^{-}$ anions occur in 1 and 2, whereas various polyiodide anions (e.g. [I3]−, [I5]−, [I7]−, [I9]−) with partly complex interaction are observed in 4, 5, and 6. The title compounds were characterized by single-crystal X-ray diffraction analysis and infrared spectroscopy. In the case of 1 and 2, the optical band gap was determined to be E g  = 1.91 and 1.62 eV, respectively. Especially, the ionic-liquid-based synthesis affords the different metastable compounds with variable composition and structure in a narrow temperature range.

In Situ Growth of PbZrxTi1-xO3 Thin Films by Pulsed Laser Deposition

1990 ◽  
Vol 191 ◽  
Author(s):  
D. B. Chrisey ◽  
J. S. Horwitz ◽  
K. S. Grabowski
Keyword(s):  
Thin Films ◽  
Substrate Temperature ◽  
Laser Deposition ◽  
X Ray Diffraction ◽  
X Ray ◽  
Composition And Structure ◽  
Elastic Backscattering ◽  
Deposited Film ◽  
Deposited Films

ABSTRACTWe have investigated the composition and structure of thin films of PbZrxTi1-xO3 (x-0.54) produced in situ by pulsed excimer laser deposition from a stoichiometric pressed oxide target. Thin films were deposited onto (100) MgO and SrTiO3 substrates as a function of substrate temperature between room temperature and 750 °C, and oxygen background pressures between vacuum and 300 mtorr. The deposited films were very smooth with particulates covering less than 0.5% of the surface. Elastic backscattering spectroscopy was used to determine the relative atomic fractions. In the deposited films, the Pb stoichiometry was found to be very sensitive to both the substrate temperature and the O2 background pressure. Above ∼600 °C, the Pb content dropped rapidly with increasing substrate temperature for a 50 mtorr 02 background. At 550 °C the Pb content was near-stoichiometric for O2 background pressures between 200 and 300 mtorr but dropped monotonically to ∼20% of the expected value for depositions in a vacuum (i.e., no O2 background). Over this entire range of pressures and temperatures the Ti/Zr stoichiometry ratio was relatively uneffected. The structure and orientation of the deposited films, as determined by x-ray diffraction, followed the Pb deficiency via the production of other phases and orientations. Crystallation of the deposited film was observed at temperatures as low as 400 °C for 200 mtorr O2 background. At 550 °C and 200 –300 mtorr, (100) oriented PbZrxTi1-xO3 was observed on SrTiO3 substrates.

Synthesis and Properties of Ultra-Thin YBa2Cu3O7 and YBa2Cu3O7/La2-xSrxCuO4 Multilayers

1989 ◽  
Vol 169 ◽  
Author(s):  
C.B. Eom ◽  
S.K. Streiffer ◽  
J.Z. Sun ◽  
K. Yamamoto ◽  
S.S. Laderman ◽  
...  
Keyword(s):  
Single Layer ◽  
Superconducting Transition ◽  
Superconducting Properties ◽  
X Ray Diffraction ◽  
Superconducting Thin Film ◽  
Cross Sectional ◽  
X Ray ◽  
Single Target ◽  
Modulation Wavelength

AbstractUsing our standard single target off-axis sputter deposition procedure[1], ultra-thin YBa2Cu3O7 superconducting films were made in-situ. We have studied the thickness dependence of superconducting properties (Tc, Jc) from 20 to 5000Å. Tc starts degrading below 125Å and falls to 50 K for the 30 Å film. Jc drops linearly with decreasing thickness below l000Å. We have grown YBa2Cu3O7/La2-xSrxCuO4 superconducting thin film multilayers in-situ by the same process. The modulation wavelength of the multilayers ranged from 45Å to 2000Å. X-ray diffraction and cross sectional TEM confirm the superlattice periodicity. The superconducting transition temperature drops in much the same way as the single layer ultra-thin films. Both the critical current density and its magnetic field dependence decrease as the modulation wavelength decreases.

Sign in / Sign up

Export Citation Format

Share Document