scholarly journals Silica-Supported Sulfuric Acid as Doping Agent in Synthesis of a New Composite of Poly(o-methoxyaniline) Under Solid-State Condition

2021 ◽  
Vol 17 ◽  
pp. 115-126
Author(s):  
Ali Reza Modarresi-Alam ◽  
◽  
Ilnaz Shariati
Keyword(s):  
Sulfuric Acid ◽  
Solid State ◽  
State Condition ◽  
Doping Agent ◽  
As Doping

Polyaniline synthesis using hydrofluoric acid as doping agent: Comparative evaluation with polyaniline doped with sulfuric acid

2012 ◽  
Vol 128 (1) ◽  
pp. 430-435 ◽  
Author(s):  
F. Z. Silveira ◽  
G. W. Duarte ◽  
C. G. Tachinski ◽  
R. Piletti ◽  
J. Fiori ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Hydrofluoric Acid ◽  
Comparative Evaluation ◽  
Doping Agent ◽  
As Doping

Preparation of Thin Cadmium Telluride Samples for Electron Microscope Studies

1974 ◽  
Vol 32 ◽  
pp. 548-549
Author(s):  
T. J. Magee ◽  
J. Peng ◽  
J. Bean
Keyword(s):  
Electron Microscope ◽  
Sulfuric Acid ◽  
Solid State ◽  
Sample Preparation ◽  
Cadmium Telluride ◽  
Potassium Dichromate ◽  
Optical Components ◽  
The Past ◽  
Solid State Devices

Cadmium telluride has become increasingly important in a number of technological applications, particularly in the area of laser-optical components and solid state devices, Microstructural characterizations of the material have in the past been somewhat limited because of the lack of suitable sample preparation and thinning techniques. Utilizing a modified jet thinning apparatus and a potassium dichromate-sulfuric acid thinning solution, a procedure has now been developed for obtaining thin contamination-free samples for TEM examination.

A redox mediator doped gel polymer as an electrolyte and separator for a high performance solid state supercapacitor

2015 ◽  
Vol 3 (7) ◽  
pp. 4035-4041 ◽  
Author(s):  
Guofu Ma ◽  
Miaomiao Dong ◽  
Kanjun Sun ◽  
Enke Feng ◽  
Hui Peng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Sulfuric Acid ◽  
Solid State ◽  
Polyvinyl Alcohol ◽  
High Performance ◽  
Indigo Carmine ◽  
Polymer System ◽  
Redox Mediator ◽  
Gel Electrolyte

A stable and effective redox-mediator gel electrolyte has been prepared by doping indigo carmine (IC) into a polyvinyl alcohol sulfuric acid polymer system (PVA–H2SO4), and a high performance solid state supercapacitor is fabricated by utilizing activated carbon as electrodes and the prepared gel polymer (PVA–H2SO4–IC) as an electrolyte and separator.

Role of strontium as doping agent in LaMn0.5Ni0.5O3 for oxygen electro-catalysis

2020 ◽  
Vol 85 ◽  
pp. 94-101 ◽  
Author(s):  
Mobinul Islam ◽  
Min-Gi Jeong ◽  
In-Hwan Oh ◽  
Kyung-Wan Nam ◽  
Hun-Gi Jung
Keyword(s):  
Doping Agent ◽  
As Doping ◽  
Electro Catalysis

The Electrical Conductivity Stability of Polyaniline Doped with Three Different Acids

2013 ◽  
Vol 774-776 ◽  
pp. 803-806
Author(s):  
Ren Chun Fu ◽  
Jun Du ◽  
Hui Huang ◽  
Zhong Cheng Guo
Keyword(s):  
Electrical Conductivity ◽  
Sulfuric Acid ◽  
Hydrochloric Acid ◽  
Temperature Dependence ◽  
Methanesulfonic Acid ◽  
Variable Range Hopping ◽  
As Doping ◽  
The Stability ◽  
Better Than

The doping acid will obviously effect on the properties of polyaniline. In order to investigate the industrial acids influence the electrical conductivity stability of polyaniline, the hydrochloric acid (HCl), sulfuric acid (SA) and methanesulfonic acid (MSA) in industrial degree were chosen as doping acids to synthesize polyaniline. The stability of electrical conductivity was measured by in situ temperature. The mechanism of temperature dependence of electrical conductivity was discussed. The results revealed that the stability of polyaniline doped by hydrochloric acid (HCl) was better than that of polyaniline doped by other acids. The variable-range hopping (VRH) model could explain the temperature dependence of electrical conductivity of polyaniline.

scholarly journals Electrically Conductive Polyester Fabrics Embedded Polyaniline

2019 ◽  
Vol 7 (4.14) ◽  
pp. 524
Author(s):  
Siti Nurzatul Ikma Omar ◽  
Zaidah Zainal Ariffin ◽  
Rabiatuladawiyah Mad Akhir ◽  
Mohamed Izzharif Abd Halim ◽  
Rosmamuhamadani Ramli ◽  
...  
Keyword(s):  
Immersion Time ◽  
Polyester Fabric ◽  
Attenuated Total Reflection ◽  
Phase Identification ◽  
Doping Agent ◽  
Conductive Fabric ◽  
As Doping ◽  
Wide Range ◽  
Short Time ◽  
Conductive Properties

Recently, conductive fabric has attracted massive attention among researchers due to their unique conductive properties with a wide range of possible applications. This study explores the fabrication of poly aniline (PANI) conductive fabric through an immersion technique of polyester fabric in PANI solution. Two types of acids (sulphuric acid (H2SO4) and p-toulene sulfonic acid (pTSA) have been employed as the doping agent to induce the conductivity in various weight percentages (0.3, 0.6 and 0.9 wt%) with immersion time of 5, 10 and 15 minutes. The fabricated conducting fabrics were then characterized by Fourier Transform Infrared Spectroscopy with attenuated total reflection (FTIR-ATR) and X-ray Diffraction (XRD) for analyses of chemical structure and phase identification respectively. Their morphologies were observed by Scanning Electron Microscope (SEM) which revealed the various fibrous structure. The finding is in line with the electrical conductivity properties of the fabrics observed using Four-point probe technique. Optimum conductivity of the conductive fabrics were found to be at 0.6 wt. % for both types of acid which are 1.30 x 10-2 S/cm (H2SO4) and 1.39 x10-3 S/cm (pTSA). Meanwhile, the varied immersion time showed no significant changes on this property, due to the short time laps. For FTIR results, the peaks confirmed the presence of PANI-EB together with the introduced acid within the PANI backbone. Collectively, H2SO4 is found to be a good candidate as doping agent, deduced from obtained conductivity values and structural properties.  

scholarly journals Effect of Doping Agent on Elution Profile of Tc-99m Generationand Labeling of Tc-99m With

2014 ◽  
Vol 27 (2) ◽  
pp. 41-45 ◽  
Author(s):  
M Ruhul Amin ◽  
Azizul Haque ◽  
Hreeshit Kumar ◽  
Sayem Yousuf
Keyword(s):  
Chemical Engineering ◽  
Radioactive Decay ◽  
Elution Profile ◽  
Nacl Solution ◽  
Doping Agent ◽  
Time Activity ◽  
As Doping ◽  
Mobile Phases ◽  
Activity Curve ◽  
Effect Of Doping

Effect of doping agent on elution profile of Tc-99m generation and labeling of Tc-99m with MDP (Methylene diphosphonate) were carried out and studied. Tc -99m is one of the most talked element of modern radio pharmacy for its multiple application in diagnosis.Tc-99m is produced from Mo-99 through radioactive decay process. In our work two column chromatographic generator were made with Alumina column and loaded with Mo-99 which would be converted into Tc-99m eventually. Elution was taken by passing saline( 1 mL 0.9% NaCl solution and 1 mL 0.9% NaCl solution with 0.0045% NaNO3 as doping agent) each time and the activities of Tc -99m was measured by a Dose Calibrator. Elutions of Tc-99m were carried out several times and each time activity was measured. It is observed that almost 60 -75 % activity can be found in 2nd elution. Studying elution profile it is seen that activity curve reaches at pick in 2nd elution and afterwards gradually slopes down. Each time better activity is achieved by using pure saline. In spite of lower activity, this research resulting highly recommendation of using NaNO3 as a doping agent in NaCl saline in case of using elution because of its higher purity and RCP value . Tc -99m is applied over a biological body as a labeled compound . In this case MDP was used as a labeling compound . With a view of carrying out the RCP value of labeled compound, paper chromatography technique is done with various mobile phases in Whatman No 1 paper. Purity (%) is ranging from 30 – 90 % and NaNO3 doped NaCl radioactive solution shows better purity performance than pure NaCl solution in every different mobile phase . DOI: http://dx.doi.org/10.3329/jce.v27i2.17800 Journal of Chemical Engineering, IEB Vol. ChE. 27, No. 2, December 2012: 41-45

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