Thin film nanocomposites from a novel poly(keto ether sulfone) to remove metal ions from wastewater

2021 ◽  
Author(s):  
Shahram Mehdipour‐Ataei ◽  
Samal Babanzadeh ◽  
Samaneh Khodami
Keyword(s):  
Thin Film ◽  
Metal Ions ◽  
Film Nanocomposites

Fabrication and Photoelectrochemical Characterization of Fe, Co, Ni and Cu-Doped TiO2 Thin Films

2013 ◽  
Vol 764 ◽  
pp. 266-283 ◽  
Author(s):  
Ibram Ganesh ◽  
Rekha Dom ◽  
P.H. Borse ◽  
Ibram Annapoorna ◽  
G. Padmanabham ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Metal Ions ◽  
Band Gap ◽  
Metal Ion ◽  
Band Gap Energy ◽  
Chemical Compositions ◽  
Gap Energy ◽  
Glass Substrates ◽  
Photoelectrochemical Characterization

Different amounts of Fe, Co, Ni and Cu-doped TiO2 thin films were prepared on fluorine doped tin oxide (FTO) coated soda-lime glass substrates by following a conventional sol-gel dip-coating technique followed by heat treatment at 550 and 600°C for 30 min. These thin films were characterized for photo-current, chronoamperometry and band-gap energy values. The chemical compositions of metals-doped TiO2 thin films on FTO glass substrates were confirmed by XPS spectroscopic study. The metal-ions doped TiO2 thin films had a thickness of <200 nm="" optical="" transparency="" of="">80%, band-gap energy of >3.6 eV, and a direct band-to-band energy transition. The photoelectrochemical (PEC) studies revealed that all the metal-ions doped TiO2 thin films exhibit n-type semi-conducting behavior with a quite stable chronoamperometry and photo-currents that increase with the increase of applied voltage but decrease with the dopant metal-ion concentration in the thin film. Furthermore, these thin films exhibited flat-band potentials amenable to water oxidation reaction in a PEC cell. The 0.5 wt.% Cu-doped TiO2 thin film electrode exhibited an highest incident photon-to-current conversion efficiency (IPCE) of about 21%.

Granular and layered ferroelectric–ferromagnetic thin-film nanocomposites as promising materials with high magnetotransmission effect

2015 ◽  
Vol 384 ◽  
pp. 75-78 ◽  
Author(s):  
A.R. Akbashev ◽  
A.V. Telegin ◽  
A.R. Kaul ◽  
Yu.P. Sukhorukov
Keyword(s):  
Thin Film ◽  
Film Nanocomposites

Electronic Properties of Thin-Film Nanocomposites Cox(LiNbO3)100-x

2007 ◽  
Vol 360 (1) ◽  
pp. 73-83 ◽  
Author(s):  
S. A. Gridnev ◽  
A. G. Gorshkov ◽  
Yu. E. Kalinin ◽  
V. Sitnikov
Keyword(s):  
Thin Film ◽  
Electronic Properties ◽  
Film Nanocomposites

scholarly journals Two-dimensional plasmons in the random impedance network model of disordered thin film nanocomposites

2018 ◽  
Vol 97 (18) ◽  
Author(s):  
N. A. Olekhno ◽  
Y. M. Beltukov
Keyword(s):  
Thin Film ◽  
Network Model ◽  
Two Dimensional ◽  
Film Nanocomposites

scholarly journals Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2591 ◽  
Author(s):  
Nur Ain Asyiqin Anas ◽  
Yap Wing Fen ◽  
Nor Azah Yusof ◽  
Nur Alia Sheh Omar ◽  
Nur Syahira Md Ramdzan ◽  
...  
Keyword(s):  
Thin Film ◽  
Heavy Metal ◽  
Quantum Dots ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Cetyltrimethylammonium Bromide ◽  
Graphene Quantum Dots ◽  
Atomic Force ◽  
The Fourier Transform ◽  
High Absorption

The modification of graphene quantum dots (GQDs) may drastically enhance their properties, therefore resulting in various related applications. This paper reported the preparation of novel cetyltrimethylammonium bromide/hydroxylated graphene quantum dots (CTAB/HGQDs) thin film using the spin coating technique. The properties of the thin film were then investigated and studied. The functional groups existing in CTAB/HGQDs thin film were confirmed by the Fourier transform infrared (FTIR) spectroscopy, while the atomic force microscope (AFM) displayed a homogenous surface of the thin film with an increase in surface roughness upon modification. Optical characterizations using UV-Vis absorption spectroscopy revealed a high absorption with an optical band gap of 4.162 eV. Additionally, the photoluminescence (PL) spectra illustrated the maximum emission peak of CTAB/HGQDs thin film at a wavelength of 444 nm. The sensing properties of the as-prepared CTAB/HGQDs thin film were studied using a surface plasmon resonance technique towards the detection of several heavy metal ions (HMIs) (Zn2+, Ni2+, and Fe3+). This technique generated significant results and showed that CTAB/HGQDs thin film has great potential for HMIs detection.

Magnetic and magnetoresistive properties of nanocomposites based on Co and SiO

2019 ◽  
Vol 33 (12) ◽  
pp. 1950113 ◽  
Author(s):  
I. M. Pazukha ◽  
Y. O. Shkurdoda ◽  
A. M. Chornous ◽  
L. V. Dekhtyaruk
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Magnetic Properties ◽  
Room Temperature ◽  
Annealing Process ◽  
Anisotropic Character ◽  
Co Concentration ◽  
Beam Method ◽  
The Magnetic Field ◽  
Film Nanocomposites

A series of thin-film nanocomposites based on ferromagnetic metal Co and insulator SiO were prepared using an electron-beam method. The magnetoresistive and magnetic properties of these structures deposited at room temperature and then annealed to 700 K were investigated. The results showed that at the Co concentration 40 [Formula: see text]x [Formula: see text] 60 at.%, thin-film nanocomposites exhibit magnetoresistance (MR) that is conditional on spin-dependent tunnelling of electrons. This range of concentrations corresponds to the prepercolation area according to the magnetic investigations. For samples with x [Formula: see text] 70 at.%, the anisotropic character of MR peculiar to the homogeneous ferromagnetic materials appears. According to the magnetic properties study, this range of concentrations corresponds to the area after transition through the percolation threshold. The annealing process in temperature range from 300 K to 700 K in the magnetic field slightly influenced the magnetoresistive properties of the thin-film nanocomposites based on Co and SiO for all range of concentrations.

Thermoelectric behavior of organic thin film nanocomposites

2012 ◽  
Vol 51 (2) ◽  
pp. 119-123 ◽  
Author(s):  
Gregory P. Moriarty ◽  
Sukanta De ◽  
Paul J. King ◽  
Umar Khan ◽  
Michael Via ◽  
...  
Keyword(s):  
Thin Film ◽  
Organic Thin Film ◽  
Film Nanocomposites

ZnO/PMMA thin film nanocomposites for optical coatings

2003 ◽  
Author(s):  
Quan Chen ◽  
Linda S. Schadler ◽  
Richard W. Siegel ◽  
Glen C. Irvin, Jr.
Keyword(s):  
Thin Film ◽  
Optical Coatings ◽  
Film Nanocomposites

Electronic properties and bonding characteristics of AlN:Ag thin film nanocomposites

2011 ◽  
Vol 109 (5) ◽  
pp. 054310 ◽  
Author(s):  
Ch. E. Lekka ◽  
P. Patsalas ◽  
Ph. Komninou ◽  
G. A. Evangelakis
Keyword(s):  
Thin Film ◽  
Electronic Properties ◽  
Bonding Characteristics ◽  
Film Nanocomposites

Cellular Automata Simulations of Thermal Transport Properties of Thin-Film Polymer/CNTs Nano-Composites for Improved Design

2014 ◽  
Vol 1619 ◽  
Author(s):  
P. Kalakonda ◽  
A. Casey ◽  
G. S. Iannacchione ◽  
G. Y. Georgiev ◽  
Y. Cabrera ◽  
...  
Keyword(s):  
Thin Film ◽  
Thermal Conductivity ◽  
Cellular Automata ◽  
Transport Properties ◽  
Thermal Transport ◽  
Film Plane ◽  
Property Relation ◽  
Improved Design ◽  
Film Polymer ◽  
Film Nanocomposites

ABSTRACTA computational algorithm has been developed to simulate the transport properties of oriented and un-oriented thin film nanocomposites of isotactic Polypropylene (iPP) and carbon nanotubes (CNT) with increasing CNT concentration. Our goal is to be able to design materials with optimal properties using these simulations. We use a cellular automata approach in a Matlab 3-D array environment. The percolation threshold is reproduced in the simulations, matching experimental data. Upon percolation, the thermal transport in the films increases sharply, due to the large difference in the thermal conductivities of the CNTs and the polymer. To verify the simulation, the thin-film samples were sheared in the melt at 200C at 1 Hz in a Linkan microscope shearing hot stage. The thermal conductivity measurements were performed on the same cell arrangement with the transport perpendicular to the thin-film plane using a DC method. The thermal conductivity is higher for the un-sheared as compared to the sheared samples. Our cellular automata simulations provide information about the microstructuremacroscopic property relation in the thin film nanocomposites and can be extended to simulations of other important materials.

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