The Effect of Polyvinyl Alcohol Concentration on the Growth Kinetics of KTiOPO4 Nanoparticles Synthesized by the Co-precipitation Method

Gharibshahian, E.

doi:10.28991/hij-2020-01-04-06

Cited by 18 publications

(9 citation statements)

References 20 publications

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“…Thus, the DO-VDBA has emerged as a promising choice for both VM and CM analog applications in the recent past. Since several structures of MSOs are available, a comparison Table 1 [23][24][25][26][27] and others [28][29][30][31][32] using new advancements in technologies. The pros of the proposed MSO, when compared to the existing structures are that •…”

Section: Introductionmentioning

confidence: 99%

Dual Output Voltage Differencing Buffered Amplifier Based Active -C Multiphase Sinusoidal Oscillator

Gupta

Pandey

2021

IJE

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A multiphase sinusoidal oscillator (MSO) using dual output voltage differencing buffered amplifier (DO-VDBA) is presented in this paper which provides n equally spaced phase sinusoids of equal magnitudes. The proposed MSO topology is realized using the first order all pass network (APN). In the proposed structure the output voltages are made available at low impedance nodes which makes the proposed MSO easy for cascadability. Making the proposed structure a resistorless structure is a major challenge. The main benefits of the structure are easy integration and less power losses. The formulation of frequency and condition of oscillation is derived mathematically. The oscillation frequency can be tuned electronically, is an added advantage of the proposed MSO. The effect of device non-idealities is also discussed in the study. To assess the proposed MSO performance further Monte Carlo analysis was carried out. The workability of the proposed structure is verified through SPICE simulations for a three (n=3) and four (n=4) phases MSO, and the obtained simulated results are in close agreement with the theoretical values. The total harmonic distortion (THD) is found to be quite low.

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Section: Introductionmentioning

confidence: 99%

Dual Output Voltage Differencing Buffered Amplifier Based Active -C Multiphase Sinusoidal Oscillator

Gupta

Pandey

2021

IJE

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“…Iron nanoparticle has many attractive properties and finds important applications in different areas of industry. So, the interest in this type material continues to grow in recent years [1][2][3]. NP can be produced either in amorphous or crystalline states.…”

Section: Introductionmentioning

confidence: 99%

“…NP can be produced either in amorphous or crystalline states. The crystallization process which play important role in modern science and technology [1,2] has been investigated by both experiment and simulation [4][5][6]. Computational simulations have been successfully conducted to study the amorphous solid-crystal transitions at atomic levels because simulation has advance on probing those transitions since it allows to calculating the trajectory of individual atoms [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Study of Effect of Size on Iron Nanoparticle by Molecular Dynamics Simulation

Kien¹,

Khamphone²,

Trang³

2021

HighTech. Innov. J.

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We use the molecular dynamics simulation to study iron nanoparticles (NPs) consisting of 4000, 5000, 6000 atoms at temperatures of 300 and 900 K. The crystallization and microstructure were analyzed through the pair radial distribution function (PRDF), the potential energy per atom, the distribution of atom types and dynamical local structure parameters <fx>, where x is the bcc, ico or 14. The simulation indicated that amorphous NP contains a large number of ico-type atoms that play a role in preventing the crystallization. Amorphous NP is crystallized through transformations of f14 > 0 and fbcc = 0 type to bcc-type atoms when it is annealed at 900 K upon 40 ns. The growth of crystal clusters happens parallel with changing its microstructure. The behavior of the crystal cluster resembles the nucleation process described by classical nucleation theory. Furthermore, we found that the amorphous NP has two parts: the core has the structure similar to the one of amorphous bulk, in while the surface structure is more porous amorphous. Unlike amorphous NP, the crystalline NP also has three parts: the core is the bcc, the next part the distorted bcc and the surface is amorphous. Amorphous and crystalline NPs have part core which has the structure not depend on size. Doi: 10.28991/HIJ-2021-02-03-01 Full Text: PDF

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“…They also reported the best method for the separation of 2, 4 dichlorophenols [15]. Also, Gharibshahian [16] investigated the influence of the concentration of Polyvinyl Alcohol on the progress kinetics of KTiOPO4 nanoparticles produced by the coprecipitation Method. Preparation, identification and optical features of LaFeO3 nanoparticles through sol-gel combustion method was explored by Theingi et al [17].…”

Section: Introductionmentioning

confidence: 99%

Photo-degradation of P-Nitro Toluene Using Modified Bentonite Based Nano-TiO2 Photocatalyst in Aqueous Solution

Rostami

Joshaghani

Mazaheri

et al. 2021

IJE

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In recent decades, Iran has been facing severe water deficiency. In all countries, industrial plants are the most water-consuming sectors; thus, industrial wastewater treatment is always a essential subject. Nitro-Toluene derivatives are extensively used in industries, especially the military industry, which itself has an abundant share in industrial wastewater contamination. These compounds are extremely dangerous for living beings and can have irreparable effects, so eradication of them in industrial wastewater is necessary. Photocatalytic processes are one of the particular approaches in industrial wastewater treatment from the advanced oxidation processes subdivision. One of the prominent and most widely used photocatalysts in this process is Titanium Dioxide (TiO2) . This research aims at the investigations for the modification of TiO2/Bentonite (TB) catalysts for attaining more economical saving and degradation stabilization conditions. To achieve this goal, the Bentonite and TiO2 photocatalyst was synthesized by a co-precipitation procedure, and its catalytic activity on Para Nitro-Toluene (PNT) degradation was examined. The designed TB photocatalyst is made of 5, 10 and 20 % of TB. A suspension reactor and the spectrophotometry was applied for specifying the extent of the degradation. Characterization of modified catalyst was conducted by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and energy dispersive X-ray (EDX). The results highlight that with increasing TiO2 percent, degradation rate augmented, and the highest degradation was attained for TB 20% at 59%. However, Under the same conditions, for pure TiO2, the degradation rate is 64%, but with more TiO2 consumption and time. Finally, in order to further confirm the extent of the degradation, chemical oxygen demand (COD) test was performed on the TA 20 sample. The results showed that about 53% of PNT has been converted to minerals.

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The Effect of Polyvinyl Alcohol Concentration on the Growth Kinetics of KTiOPO4 Nanoparticles Synthesized by the Co-precipitation Method

Cited by 18 publications

References 20 publications

Dual Output Voltage Differencing Buffered Amplifier Based Active -C Multiphase Sinusoidal Oscillator

Dual Output Voltage Differencing Buffered Amplifier Based Active -C Multiphase Sinusoidal Oscillator

Study of Effect of Size on Iron Nanoparticle by Molecular Dynamics Simulation

Photo-degradation of P-Nitro Toluene Using Modified Bentonite Based Nano-TiO2 Photocatalyst in Aqueous Solution

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