Relative Absorption of Phosphorus by Rice Plants from Native and Additive Sources, Using Radioactive Phosphorus as a Tracer

Thaung, Maung Mya

doi:10.1097/00010694-196011000-00004

Cited by 6 publications

(6 citation statements)

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“…An increase in the maximum phase as CPYA concentration increases, confirms the greater adsorption of organic molecules on the MS. The Bode modulus shows an increase in low‐frequency impedance values with identical curve shapes with increasing CPYA concentration, indicating better protection of MS surface due to adsorption, corroborating the Nyquist results …”

Section: Resultssupporting

confidence: 78%

Theoretical and experimental studies of a new aniline derivative corrosion inhibitor for mild steel in acid medium

Fernandes

Palmeira-Mello

Santos

et al. 2019

Materials & Corrosion

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4‐Chloro‐N‐(pyridin‐2‐ylmethyl)aniline (CPYA) was synthesized by a simple and inexpensive method and tested as a corrosion inhibitor in acid medium for mild steel by using gravimetric studies and electrochemical measurements. An average maximum efficiency of 96.0% was achieved at 4.59 mmol/L. Corrosion kinetic and thermodynamic parameters were also analyzed. Surface analyses (atomic force microscopy and scanning electron microscopy) show that protection is enabled by adsorption on the metal, forming a film. Quantum chemical calculations were performed to access information regarding the molecular structure in the corrosive medium and to support interpretation of the results obtained by experimental methods.

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Section: Resultssupporting

confidence: 78%

Theoretical and experimental studies of a new aniline derivative corrosion inhibitor for mild steel in acid medium

Fernandes

Palmeira-Mello

Santos

et al. 2019

Materials & Corrosion

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“…The higher is the E HOMO , the better will be the donating capability of the inhibitor molecule, and the lower is the E LUMO , the higher is the electron acceptance capability of the inhibitor molecule and the better will be the inhibition efficiency. 15,19,72,73 Apart from E HOMO and E LUMO , the energy gap (DE) is also an important parameter to elucidate chemical reactivity of the inhibitor molecule. As DE decreases, chemical reactivity of the molecule increases, which in turn leads to an increase in the adsorption of the inhibitor molecules onto the metallic surface.…”

Section: Quantum Chemical Calculationsmentioning

confidence: 99%

Novel Schiff-base molecules as efficient corrosion inhibitors for mild steel surface in 1 M HCl medium: experimental and theoretical approach

Saha

Dutta

Ghosh

et al. 2016

Phys. Chem. Chem. Phys.

410

100

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In order to evaluate the effect of the functional group present in the ligand backbone towards corrosion inhibition performances, three Schiff-base molecules namely, (E)-4-((2-(2,4-dinitrophenyl)hydrazono)methyl)pyridine (L(1)), (E)-4-(2-(pyridin-4-ylmethylene)hydrazinyl)benzonitrile (L(2)) and (E)-4-((2-(2,4-dinitrophenyl)hydrazono)methyl)phenol (L(3)) were synthesized and used as corrosion inhibitors on mild steel in 1 M HCl medium. The corrosion inhibition effectiveness of the studied inhibitors was investigated by weight loss and several sophisticated analytical tools such as potentiodynamic polarization and electrochemical impedance spectroscopy measurements. Experimentally obtained results revealed that corrosion inhibition efficiencies followed the sequence: L(3) > L(1) > L(2). Electrochemical findings showed that inhibitors impart high resistance towards charge transfer across the metal-electrolyte interface and behaved as mixed type inhibitors. Scanning electron microscopy (SEM) was also employed to examine the protective film formed on the mild steel surface. The adsorption as well as inhibition ability of the inhibitor molecules on the mild steel surface was investigated by quantum chemical calculation and molecular dynamic (MD) simulation. In quantum chemical calculations, geometry optimized structures of the Schiff-base inhibitors, electron density distribution in HOMO and LUMO and Fukui indices of each atom were employed for their possible mode of interaction with the mild steel surfaces. MD simulations revealed that all the inhibitors molecules adsorbed in parallel orientation with respect to the Fe(110) surface.

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“…From the structure of HBHQ, the nitrogen atoms have a non-bonding pair of electrons. This may support the development of Fe 2+ -HBHQ complex compound and accordingly changes the dissolution mechanism of iron [26]. On the other hand, it is obvious that the azomethine inhibitor perform great protection capacity all along corrosion potential until -290 mV (vs. SCE).…”

Section: Potentiodynamic Polarization Curvesmentioning

confidence: 86%

Inhibitor effect of new azomethine derivative containing an 8-hydroxyquinoline moiety on corrosion behavior of mild carbon steel in acidic media

2018

Int. J. Corros. Scale Inhib.

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A new Azomethine derivative namely 5-(((4-hydroxybenzylidene)amino)methyl)quinolin-8-ol (HBHQ) was synthesized and identified by different spectroscopic methods. The product was assessed in the inhibition of corrosion of carbon steel (CS) in 1 M HCl using Tafel polarization, weight loss and electrochemical impedance spectroscopy. Their property anticorrosion is relative in concentrations and achieved 92% at the optimum concentration of 10-3 M. Polarization studies showed that that the newly synthesized inhibitor was of mixed type in nature. The EIS data bring that, the development of a protective layer of azomethine derivative increase the charge transfer resistance and decreases in the double layer capacitance of carbon steel in acid medium. The adsorption process at interface of carbon steel in hydrochloric acid by HBHQ was studied at different temperatures (298-338 K) by means of Tafel polarisation measurements. The adsorption of azomethine derivative on the carbon steel (CS) surface followed Langmuir adsorption isotherm and in order to discover the mode of adsorption process, various thermodynamic and activation parameters were evaluated. Quantum chemical calculations were performed using methods based on density functional theory (DFT/B3LYP) and Monte Carlo simulations (MCs). Indeed, the results obtained by this computation reflect a good agreement with the practical part.

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Relative Absorption of Phosphorus by Rice Plants from Native and Additive Sources, Using Radioactive Phosphorus as a Tracer

Cited by 6 publications

References 0 publications

Theoretical and experimental studies of a new aniline derivative corrosion inhibitor for mild steel in acid medium

Theoretical and experimental studies of a new aniline derivative corrosion inhibitor for mild steel in acid medium

Novel Schiff-base molecules as efficient corrosion inhibitors for mild steel surface in 1 M HCl medium: experimental and theoretical approach

Inhibitor effect of new azomethine derivative containing an 8-hydroxyquinoline moiety on corrosion behavior of mild carbon steel in acidic media

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