A5047607033- Corrosion Behavior and Inhibition
- Concrete Corrosion and Durability
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced Sensor and Energy Harvesting Materials
- Analytical Chemistry and Sensors
- Supercapacitor Materials and Fabrication
- Electrochemical Analysis and Applications
- Electrophoretic Deposition in Materials Science
- Electrochemical sensors and biosensors
- Conducting polymers and applications
- Material Properties and Failure Mechanisms
Tribhuvan University
2018-2022
Alkaloids are aromatic hydrocarbons with nitrogen as heteroelements in the ring structure that responsible for bonding metal surface and help to reduce corrosion of metals such mild steel (MS) an acidic medium. In this study, alkaloid Rhynchostylis retusa (RR) was extracted by solvent extraction method confirmed chemical test well FTIR spectroscopic test. Extracted alkaloids were tested green inhibitors MS a 1.0 M H2SO4 solution. The inhibition efficiency (IE) extracts RR studied weight loss...
The environmental and economic benefits have been the driving force in search of efficient corrosion inhibitors for iron/steel used industrial acidic medium. This study reports on berberine isolated from methanol extract high-altitude (1347 m) shrub Mahonia nepalensis as a highly thermally stable inhibitor mild steel (MS) 1.0 M H2SO4 simulating acid pickling condition. weight-loss electrochemical methods revealed fast adsorption berberine. Significant Findings: It achieved above 91%...
Lantana camara, an invasive species that adversely affects habitant, bioregions and environment has been studied as corrosion inhibitor.Methanolic extract of barks camara in 1 M hydrochloric acid was tested inhibitor on mild steel using potentiodynamic polarization technique.The inhibition efficiency varied with concentration immersion time.The found to increase the extract.The behavior revealed maximum is 97.33 % 89.93 respectively 1000 200 ppm respectively.The results showed served a mixed...
In this study, we report on a combined approach to preparing an active electrode material for supercapattery application by making nanocomposites of Polyaniline/Cerium (PANI/Ce) with different weight percentages magnetite (Fe 3 O 4 ). Fourier-transform infrared spectroscopy (FTIR) and x-ray diffraction (XRD) analyses supported the interaction PANI Ce formation successful nanocomposite nanoparticles. Scanning electron microscopy (SEM) transmission (TEM) showed uniform porous morphology...
The corrosion inhibition properties of the acidic extract Eucalyptus globulus (EG) was investigated for mild steel (MS) using weight loss method and open circuit potential (OCP) measurement. Corrosion MS in 0.1M HCl studied absence presence various concentrations EG barks. results showed an increase with increasing concentration extract. efficiency 100% approximately 98.0% after 24 hours immersion solution. FTIR spectrum compounds containing oxygen nitrogen functional groups responsible...
The corrosion inhibition properties of methanol extract Jatropha curcas (JC) were investigated for mild steel (MS) in acidic medium using weight loss and potentiodynamic methods. Corrosion MS 1MH2SO4 was studied the absence presence various concentrations methanolic barks. results showed an increase with increasing concentration extract. efficiency 1000 ppm JC from polarization methods approximately 92.0% after 24 hours immersion solution. Open circuit potential (OCP) measurements that acts...
<h2>Abstract</h2> Cu(II) monitoring is a matter of great interest to researchers due its toxicity and adverse environmental effects. Among different methods for detecting Cu(II), ion-selective electrode (ISE) more advantageous as they are low-cost, easy fabricate, highly selective. Here, we report simple, inexpensive, reproducible procedure the fabrication electrodes using CuS particles polyvinyl chloride (PVC) matrix. particles, obtained by chemical precipitation, were characterized X-ray...
Abstract The effect of cations on the corrosion galvanized steel (GS) is scarcely reported. In this study, a wet–dry cyclic test was conducted to study NH 4 + , Na and Mg 2+ cation behavior GS available in Nepal. Fourteen cycles (18 h wet 6 dry) were performed by exposing samples at 298 K with relative humidity 90% cycle 50% dry for 14 days. strongly affect rate sample estimated weight loss potentiodynamic polarization. polarization curves showed inhibition cathodic anodic reactions ion,...
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