scholarly journals In situ Synthesis of PANI/CuO Nanocomposites for Non-Enzymatic Electrochemical Glucose Sensing

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Gul Rahman ◽  
Mustifuz Ur Rahman ◽  
Zainab Najaf
Keyword(s):  
Copper Oxide ◽  
Copper Substrate ◽  
Chemical Precipitation ◽  
Glucose Sensing ◽  
In Situ Synthesis ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Vis Spectroscopy ◽  
Composite Formation

We report the in situ synthesis of polyaniline/copper oxide (PANI/CuO) nanocomposites and their characterization as electrocatalyst for non-enzymatic electrochemical glucose detection. Copper oxide (CuO) nanoparticles were prepared by wet chemical precipitation method followed by thermal treatment while the composites of PANI and CuO were synthesized by in situ chemical polymerization of aniline with definite amount of CuO. X-ray diffraction (XRD) results revealed that the composites are predominantly amorphous. The composite formation was confirmed by fourier transform infrared (FTIR) and UV-Vis spectroscopy analysis. The surface morphology was greatly altered with the amount of CuO in composite structure. PANI/CuO nanocomposites were coated on copper substrate to investigate their electrocatalytic activity for glucose sensing. PANI/CuO with 10 wt. % CuO exhibited good response towards electrochemical glucose oxidation. 

scholarly journals In situ synthesis of PANI/CuO nanocomposites for non-enzymatic electrochemical glucose sensing

2020 ◽  
Vol 3 (2) ◽  
pp. 9
Author(s):  
Gul Rahman ◽  
Mustifuz Ur Rahman ◽  
Zainab Najaf
Keyword(s):  
Copper Oxide ◽  
Copper Substrate ◽  
Chemical Precipitation ◽  
Glucose Sensing ◽  
In Situ Synthesis ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Vis Spectroscopy ◽  
Composite Formation

We report the in situ synthesis of polyaniline/copper oxide (PANI/CuO) nanocomposites and their characterization as electrocatalyst for non-enzymatic electrochemical glucose detection. Copper oxide (CuO) nanoparticles were prepared by wet chemical precipitation method followed by thermal treatment while the composites of PANI and CuO were synthesized by in situ chemical polymerization of aniline with definite amount of CuO. X-ray diffraction (XRD) results revealed that the composites are predominantly amorphous. The composite formation was confirmed by fourier transform infrared (FTIR) and UV-Vis spectroscopy analysis. The surface morphology was greatly altered with the amount of CuO in composite structure. PANI/CuO nanocomposites were coated on copper substrate to investigate their electrocatalytic activity for glucose sensing. PANI/CuO with 10 wt. % CuO exhibited good response towards electrochemical glucose oxidation.

Size Controllable Synthesis and Characterization of CuO Nanostructure

2018 ◽  
Vol 915 ◽  
pp. 98-103 ◽  
Author(s):  
Duygu Candemir ◽  
Filiz Boran
Keyword(s):  
Freeze Drying ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Peg 4000 ◽  
Structure Morphology ◽  
Cuo Nanostructure

In this study, copper oxide (CuO) nanostructures were successfully prepared by adding EG (ethylene glycol) and PEG (4000, 8000) (polyethylene glycol) via an in-situ chemical precipitation method. EG and PEG (4000, 8000) were effective for changing the particular size of CuO and we examined the effects of drying type such as freeze drying, muffle and horizontal furnace on the size of CuO nanostructure. The structure, morphology and elemental analysis of CuO nanostructure were analyzed by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS). Also, the CuO nanostructures showed excellent electrical conductivity by the changing of PEG’s molecular weight and drying processes.

Synthesis and Characterization of Modified Diatomite-Leaf-Like CuO Nanosheet Composites

2018 ◽  
Vol 915 ◽  
pp. 93-97
Author(s):  
Filiz Boran
Keyword(s):  
Chemical Precipitation ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure Morphology ◽  
Cuo Nanosheets ◽  
20 Nm ◽  
Modified Diatomite

In this work, firstly we described the effect of freeze drying on modification of raw diatomite. And then, modified diatomite-leaf-like copper oxide (CuO) nanosheet composite was successfully prepared by surfactant-free in-situ chemical precipitation method. The structure, morphology and elemental analysis of CuO nanosheets and its composite were analyzed by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), fourier transform infrared (FTIR) spectroscopy and energy dispersive X-ray spectroscopy (EDAX). Dimensions of leaf-like CuO nanosheets were approximately determined as 160 nm in width, 320 nm in length and 20 nm in thickness. According to the EDAX spectrum, leaf-like CuO nanosheets composed of Cu and O atoms without any impurity and also uniformly covered the entire surface of modified diatomite.

Synthesis and characterization of zinc doped copper oxide nanocrystals by chemical precipitation method

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Aarthe K G ◽  
Sowmiya V
Keyword(s):  
Copper Oxide ◽  
Copper Acetate ◽  
Morphological Structure ◽  
Visible Spectrum ◽  
Chemical Precipitation ◽  
Copper Oxide Nanoparticles ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray

Zinc doped copper oxide nanoparticles were synthesized by chemical precipitation method. Copper acetate is act as a precursor and sodium hydroxide will act as a reducing agent. The prepared nanoparticles were characterized by X-ray diffraction (XRD) which reveals the simple monoclinic structure. The Fourier Transform Infrared Spectroscopy confirms the functional groups present in the nano powders. The morphological Structure of the prepared crystals are analyzed by Scanning Electron Microscopy (SEM) were showed that the products consists of flaky in nature. The Bandwidth of the synthesized sample was calculated by UV- visible spectrum. The presence of compounds in nano powders were confirmed by Energy Dispersive X-ray diffraction (EDAX). Copper oxide has applications as a P-type semiconductor, because it has a narrow band gap of energy of 1.2 e V. Zinc doped copper oxide has applications in the wide variety of fields such as medicine, industries, sunscreens, agriculture etc.

scholarly journals Enhanced Visible Light Photocatalytic Degradation of Fe-Doped ZnO Nanoparticles For Organic Dyes

2021 ◽  
Author(s):  
Senthilkumar M ◽  
C. Arunagiri
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Dyes ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Photocatalytic Efficiency ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Visible Light Photocatalytic

Abstract FexZn1-xO (x = 0, 0.05, 0.075, 0.1 M) nanoparticles based photocatalysts were synthesized by a chemical precipitation method and characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive X-ray emission (EDX) and UV–Vis spectroscopy. The photocatalytic efficiency of FexZn1-xO catalysts was assessed under visible light irradiation using the degradation of methylene blue (MB) and methyl orange (MO) dye in aqueous solution. The present investigation shows that the effect of optimized parameters (pH, catalyst dosage and initial dye concentration) and doping concentrations plays significant role in photocatalytic activity. The detailed photocatalytic mechanism for the enhancement of photocatalytic activity has also been proposed.

scholarly journals Preparation and characterization of Mn doped ZnO nanorods -=SUP=-*-=/SUP=-

2018 ◽  
Vol 60 (5) ◽  
pp. 999
Author(s):  
R. Dilber Pushpitha ◽  
L. Bruno Chandrasekar ◽  
N.M. Segu Sahuban Bathusha ◽  
R. Chandramohan ◽  
M. Karunakaran ◽  
...  
Keyword(s):  
Zno Nanorods ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Free Electrons ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Doped Zno ◽  
Mn Doped

AbstractMn doped ZnO nanorods were prepared by chemical precipitation method. The micro-structural and structural properties of the nanorods were calculated from the X-ray diffraction technique. The formed nanorods was seen in the scanning electron microscopy. The purity of the sample was confirmed by the energy dispersive X-ray analysis (EDX). The optical properties were studied using UV-Vis spectroscopy and photoluminescence. In the photoluminescence spectrum, the peaks due to recombination of free electrons, oxygen vacancy and intrinsic defects were observed. The magnetic properties were studied using vibrating sample magnetometer (VSM) and the paramagnetic nature of the material was confirmed.

Synthesis and photocatalytic properties of magnetic separable and recyclable p-n heterojunction CoFe2O4/Bi12O17Cl2 photocatalyst

CrystEngComm ◽  
2021 ◽  
Author(s):  
Kexin Fang ◽  
Lei Shi ◽  
Lishuang Cui ◽  
Chunwei Shi ◽  
Weiwei Si
Keyword(s):  
Chemical Precipitation ◽  
Photocatalytic Properties ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Crystallinity

A series of CoFe2O4/Bi12O17Cl2 (CFO/Bi12O17Cl2) nanocomposites have been prepared by chemical precipitation method. The result of X-ray diffraction showed that CFO/Bi12O17Cl2 composites had high crystallinity. It was found that CoFe2O4...

Monodisperse Fe3O4/Fe Core/Shell Nanoparticles with Enhanced Magnetic Property

2011 ◽  
Vol 306-307 ◽  
pp. 410-415
Author(s):  
Li Sun ◽  
Fu Tian Liu ◽  
Qi Hui Jiang ◽  
Xiu Xiu Chen ◽  
Ping Yang
Keyword(s):  
Average Diameter ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Core Shell ◽  
X Ray Diffraction ◽  
Shell Nanoparticles ◽  
X Ray ◽  
Transmission Electron ◽  
Shell Particles ◽  
Core Shell Nanoparticles

Core/shell type nanoparticles with an average diameter of 20nm were synthesized by chemical precipitation method. Firstly, Monodisperse Fe3O4 nanoparticles were synthesized by solvethermal method. FeSO4ž7H2O and NaBH4 were respectively dissolved in distilled water, then moderated Fe3O4 particles and surfactant(PVP) were ultrasonic dispersed into the FeSO4ž7H2O solution. The resulting solution was stirred 2 h at room temperature. Fe could be deposited on the surface of monodispersed Fe3O4 nanoparticles to form core-shell particles. The particles were characterized by using various experimental techniques, such as transmission electron microscopy (TEM), X-ray diffraction (XRD), AGM and DTA. The results suggest that the saturation magnetization of the nanocomposites is 100 emu/g. The composition of the samples show monodisperse and the sides of the core/shell nanoparticles are 20-30nm. It is noted that the formation of Fe3O4/Fe nanocomposites magnetite nanoparticles possess superparamagnetic property.

scholarly journals Crystal Chemistry and Luminescence Properties of Eu-Doped Polycrystalline Hydroxyapatite Synthesized by Chemical Precipitation at Room Temperature

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 250 ◽  
Author(s):  
Francesco Baldassarre ◽  
Angela Altomare ◽  
Nicola Corriero ◽  
Ernesto Mesto ◽  
Maria Lacalamita ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Temperature ◽  
Inductively Coupled Plasma ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled

Europium-doped hydroxyapatite Ca10(PO4)6(OH)2 (3% mol) powders were synthesized by an optimized chemical precipitation method at 25 °C, followed by drying at 120 °C and calcination at 450 °C and 900 °C. The obtained nanosized crystallite samples were investigated by means of a combination of inductively coupled plasma (ICP) spectroscopy, powder X-ray diffraction (PXRD), Fourier Transform Infrared (FTIR), Raman and photoluminescence (PL) spectroscopies. The Rietveld refinement in the hexagonal P63/m space group showed europium ordered at the Ca2 site at high temperature (900 °C), and at the Ca1 site for lower temperatures (120 °C and 450 °C). FTIR and Raman spectra showed slight band shifts and minor modifications of the (PO4) bands with increasing annealing temperature. PL spectra and decay curves revealed significant luminescence emission for the phase obtained at 900 °C and highlighted the migration of Eu from the Ca1 to Ca2 site as a result of increasing calcinating temperature.

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