Electrochemistry, Electrodeposition, and Photoluminescence of Eu (III)/Lanthanides (III) on Terpyridine-Functionalized Ti Nanospikes

Terpyridine-functionalized Ti nanospike electrodes (TiNS-SiTpy) were developed and applied to cyclic voltammetry and amperometry of Ln (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb) ions and mixed Eu (III) + Ln (III) ions in a 0.1 M NaClO4 electrolyte. Electrodeposition was successfully performed over TiNS-SiTpy electrodes, which were fully examined by scanning electron microscopy, X-ray diffraction crystallography, Fourier-transform infrared spectroscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, photoluminescence (PL), and PL decay kinetics. The Gd and Tb ions were found to increase PL intensities with 10× longer lifetimes of 1.32 μs and 1.03 μs, respectively, compared with that of the electrodeposited Eu sample. The crystal phase and the oxidation states were fully examined for the mixed Ln (Eu + Gd and Eu + Tb) complex structures.

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Preparation of Cerium Dioxide Layers on Titanium by Electrodeposition with Organic Solution

Journal of Nanomaterials ◽

10.1155/2017/7214617 ◽

2017 ◽

Vol 2017 ◽

pp. 1-9

Author(s):

Vaijayanti Namdeo Nande ◽

Diana Kostyukova ◽

Jeonghee Choi ◽

Yong Hee Chung

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Photoelectron Spectroscopy ◽

Cerium Dioxide ◽

Average Crystallite Size ◽

X Ray Diffraction ◽

Organic Solution ◽

X Ray ◽

Titanium Foils ◽

Scanning Electron

Layers of cerium dioxide nanoparticles were prepared on titanium by electrodeposition with organic solution. Three concentrations of cerium ions were used at 31.6 V. The organic solution was isobutanol and titanium foils were used as anodes and cathodes. Currents were monitored during the electrodeposition. Deposition times ranged from 0.5 to 8 h. Deposited Deposited layers were calcined at 700 K for 30 min. The morphology and composition of the deposited layers were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). As-prepared and calcined deposition layers were assayed to be cerium dioxide. The average crystallite size increased from 4 to 7 nm through calcination at 700 K. Sizes of calcined cerium oxide agglomerates were ranging from 73 to 146 nm for 30 min deposition and 209 to 262 nm for 8 h deposition. The electrodeposition efficiencies of 0.5 h deposition at three concentrations were measured to be highest.

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Fabrication of g-C3N4/Y-TiO2 Z-scheme heterojunction photocatalysts for enhanced photocatalytic activity

New Journal of Chemistry ◽

10.1039/d1nj03691b ◽

2021 ◽

Author(s):

SongSik Pak ◽

KwangChol Ri ◽

Chenmin Xu ◽

Qiuyi Ji ◽

Dunyu Sun ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Fourier Transform ◽

Photocatalytic Activity ◽

Electron Microscope ◽

Photoelectron Spectroscopy ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Scanning Electron

The g-C3N4/Y-TiO2 Z-scheme heterojunction photocatalysts were successfully synthesized. The powder X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscope, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy were used for...

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Magnetic and Structural Properties of Nanocomposite ZnO-Fe3O4 Films Prepared by Solid-State Synthesis

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.215.158 ◽

2014 ◽

Vol 215 ◽

pp. 158-162

Author(s):

Liudmila E. Bykova ◽

V.G. Myagkov ◽

I.A. Tambasov ◽

O.A. Bayukov ◽

Victor S. Zhigalov ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Solid State ◽

Photoelectron Spectroscopy ◽

Magnetic Measurements ◽

X Ray Diffraction ◽

Simple Method ◽

Physical Methods ◽

X Ray ◽

Scanning Electron

A simple method for obtaining ZnO-Fe3O4 nanocomposites using solid-state reaction Zn + 3Fe2O3 ZnO + 2Fe3O4 is suggested. An analysis of the characteristics and properties of ZnO-Fe3O4 nanocomposites was carried out by a combination of structural and physical methods (X-ray diffraction, scanning electron microscopy, photoelectron spectroscopy, Mössbauer measurements, X-ray fluorescent analysis, and magnetic measurements). The magnetization of the hybrid ZnO-Fe3O4 films is equal to 440 emu/cm3. The resulting Fe3O4 nanoparticles are surrounded by a ZnO shell and have sizes ranging between 20 and 40 nm.

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Uranium(VI) interaction with pyrite (FeS2): Chemical and spectroscopic studies

Radiochimica Acta ◽

10.1524/ract.2006.94.9-11.651 ◽

2006 ◽

Vol 94 (9-11) ◽

Cited By ~ 21

Author(s):

Noelle Eglizaud ◽

F. Miserque ◽

E. Simoni ◽

M. Schlegel ◽

M. Descostes

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Photoelectron Spectroscopy ◽

Spectroscopic Studies ◽

Solution Chemistry ◽

X Ray Diffraction ◽

X Ray ◽

Natural Pyrite ◽

Scanning Electron

The mechanism of uranium(VI) interaction with pyrite was studied by solution chemistry and X-ray Photoelectron Spectroscopy (XPS). Natural pyrite was characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). After equilibration in 10

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PENGARUH KONSENTRASI KOH TERHADAP SIFAT FISIS DAN ELEKTROKIMIA ELEKTRODA KARBON DARI LIMBAH KULIT DURIAN SEBAGAI SEL SUPERKAPASITOR

Komunikasi Fisika Indonesia ◽

10.31258/jkfi.15.1.62-66 ◽

2018 ◽

Vol 15 (1) ◽

pp. 62

Author(s):

Pandi Kurniawan ◽

Erman Taer ◽

Usman Malik ◽

Rika Taslim

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Cyclic Voltammetry ◽

Chemical Activation ◽

Activation Process ◽

X Ray Diffraction ◽

X Ray ◽

Carbonization Process ◽

Cell Capacitance ◽

Scanning Electron

Activated carbon electrode have been prepare from durian shell focused in KOH concentration variations at chemical activation process. The preparation of carbon electrodes begins with pre-carbonization process, grinding using Hard Grinder and ball milling, after that followed by sieving process with particle size at range of 39 - 52 μm. Chemical activation was performed by using KOH activator agent with concentration variation of 0.5 M, 0.6 M, 0.7 M. Carbon powder are formed to pellet form using Hydraulic Press at a 8 ton compression pressure. The carbonization process is carried out a temperature of 600°C in the N2 gas atmosphere at a temperature of 900°C for 2 hours. The electrodes characterization are performed to determine the physical and electrochemical properties.The physical properties such as density, degree of cristanility, surface morfology was analyzed by calculate the electrode dimension such as, mass, thickness and diameter, X-ray diffraction analysis and Scanning Electron Microscopy Analysis. the electrochemical properties was studied the cell capacitance and the electrode capacitance specific using Cyclic Voltammetry method. the electrode density were decrease with the increasing the KOH concentration. The smallest density has been found at electrode using a KOH concentration of 0.7 M. The XRD test showed a carbon was amorfphuse structure identified by existing two broadening peaks at an angle of 2θ, ie 24.967°, 44.315° and 81.332° which describes the (002), (100) and (112) planes. Furthermore, samples were analyzed by Scanning Electron Microscopy and X-ray diffraction. The cyclic voltammetry result, obtained the highest specific capacitance of 89.05 F/g and cell capacitance 24,04 F was found at electrode with a KOH concentration of 0.7 M. From this research it can be concluded that the KOH optimum concentration was 0.7 M.

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High Sensitivity Electrochemical Multisensors based on Graphene-PANI Nanocomposite for Simultaneous Detection of Glucose and Urea

Journal of New Materials for Electrochemical Systems ◽

10.14447/jnmes.v19i3.311 ◽

2016 ◽

Vol 19 (3) ◽

pp. 145-150 ◽

Cited By ~ 1

Author(s):

Meysam Karimi ◽

Mohammad Rabiee ◽

Mojgan Abdolrahim ◽

Mohammadreza Tahriri ◽

Daryoosh Vashayee ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Cyclic Voltammetry ◽

Simultaneous Detection ◽

High Sensitivity ◽

Xrd Analysis ◽

Experimental Results ◽

X Ray Diffraction ◽

X Ray ◽

Scanning Electron

We present a study of the effect of graphene–PANI nanocomposites on the sensitivity of the urea and glucose multisensory. We used an electroctrochemical multisensor based on two electrodes located in a reservoir with two separate channels. The urease and glu-cose oxidase (GOD) were employed for detecting the urea and glucose, respectively. We characterized the graphene and graphene-PANI samples with X-ray Diffraction (XRD) analysis and scanning electron microscopy (SEM) observations. We further performed the Cyclic voltammetry and Amperometry tests. The collected experimental results revealed that the intensity of the peak significantly increases with the concentration of the urea and glucose.

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Hydrothermal Synthesis of Tetragonal Phase CuInS2 Nanoparticles

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.557-559.489 ◽

2012 ◽

Vol 557-559 ◽

pp. 489-492

Author(s):

Zhi Xin Chen ◽

Ya Zhen Ye ◽

Han Jie Huang ◽

Guang Can Xiao ◽

Yun Hui He

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Transmission Electron Microscopy ◽

Hydrothermal Synthesis ◽

Photoelectron Spectroscopy ◽

Tetragonal Phase ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Scanning Electron

The tetragonal phase CuInS2 nanoparticles were synthesized by the reaction of Cu(Ac)2, InCl3·4H2O and thioacetamide by hydrothermal method at 200 °C for 6 h in pH 1. The products were characterized by X-ray diffraction, energy-dispersive X-ray spectrum, X-ray photoelectron spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. Experimental results indicate that reaction temperature and the pH of solution are the important factors in the formation of CuInS2. The SEM and TEM results illuminated that the CuInS2 was composed of so many nanoparticles.

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Stability and deactivation research of RuO2-PdO/Ti electrode in dye water degradation

Water Science & Technology ◽

10.2166/wst.2014.253 ◽

2014 ◽

Vol 70 (5) ◽

pp. 757-762 ◽

Cited By ~ 2

Author(s):

Lin Du ◽

Jin Wu ◽

Guiying Li ◽

Changwei Hu

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Photoelectron Spectroscopy ◽

Coating Layer ◽

Titanium Substrate ◽

Catalytic Degradation ◽

X Ray Diffraction ◽

X Ray ◽

Water Degradation ◽

Scanning Electron

RuO2-PdO/Ti electrode was prepared and used for the electro-catalytic degradation of Active Red K-2BP. It was found that the electrode was very stable in the process. A discoloration rate of 96.2% could still be achieved on the electrode after being used for 100 runs. X-ray photoelectron spectroscopy, X-ray diffraction, and scanning electron microscopy characterizations of the electrode were carried out. Results showed that the deactivation of the electrode was caused by the reconstruction and oxidation of titanium substrate as well as by the coverage of the active phases on the surface of the electrode by silicon. The cracks on the coating layer also contributed to the deactivation.

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Bio-Inspired Mineralization from Aqueous Solutions of Zinc Nitrate Directed by Building Blocks of DNA

MRS Proceedings ◽

10.1557/proc-1008-t04-03 ◽

2007 ◽

Vol 1008 ◽

Cited By ~ 1

Author(s):

Micha Jost ◽

Peter Gerstel ◽

Joachim Bill ◽

Fritz Aldinger

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Photoelectron Spectroscopy ◽

Building Blocks ◽

Zinc Nitrate ◽

X Ray Diffraction ◽

X Ray ◽

Dna And Rna ◽

Scanning Electron

AbstractIn this paper, the suitability of DNA- and RNA-bases, nucleosides and nucleotides, and DNA itself as structure-directing agents for the mineralization of ZnO-based materials is discussed. Those bioorganic molecules are able to trigger the morphology of mineralization products ranging from smooth, homogenous thin films to sponge-like, sheet-like and fibrous products. Besides the investigation of morphological features by scanning electron microscopy, the structural characterization of these materials by X-ray diffraction, vibrational spectroscopy, photoluminescence spectroscopy and photoelectron spectroscopy is discussed.

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