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RISS 인기검색어
- 검색키워드
- 저자 : Athira Krishnan (검색결과 3 건)
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Athira Krishnan,Sheik Muhammadhu Aboobakar Shibli 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.87 No.-
Ni-P coating (NPC) fabricated by electroless deposition has been widely accepted as an effective electrodefor alkaline hydrogen evolution reaction. Among the different strategies reported to improve the catalyticactivity of Ni-P electrode (NPE) further, incorporation of inorganic metal oxide composite is a provenmethod. Herein, we propose a modification of TiO2/TiO2-WO3 core-shell structured composite (a novelentity), by the application of conductive polyaniline (P-Ani), as a continuation of our earlier work on itssynthesis and characterization. The as-prepared polymer-metal oxide hybrid nanocomposite is thenemployed to modify the NPE by electroless deposition method. The improved surface characteristics ofthe modified NPE, after the incorporation of P-Ani/TiO2/TiO2-WO3 composite with reduced chargetransfer resistance and low overpotential for alkaline hydrogen evolution ( 65 mV at10 mA/cm2)corroborates its enhanced catalytic behavior. The increase in the number of catalytically active sites onthe NPE after modification through P-Ani composite is attributed to the enhanced characteristics foralkaline hydrogen evolution. Our strategy proposes a sustainable and low-cost electrode material,competent to the existing industrial electrocatalysts, for long term hydrogen evolution in alkalinemedium.
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Athira Krishnan 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.10
As part of promoting eco-friendly research & development, corrosion chemistry encourages green inhibitors for metal corrosion prevention. Thespesia Linoleic acid, n-Hexadecanoic acid, trans-Squalene, Phytol were identified as the active components responsible for corrosion inhibition. The optimum concentration of 500 ppm could deliver protection with efficiency in the range of 97%-98%. Additionally, we extended the study to evaluate the extract's capability for its use in the paint industry. The remarkable potential of the TiO2-TP composite coating thus developed was illustrated by physico-chemical, electrochemical, and surface analyses. According to the electrochemical impedance spectroscopy (EIS) study, the applied leaf extract loaded coatings resist corrosion of CS at efficiencies of 97.9%, 91.6%, and 98.5% in 1M HCl, 1M HCl at 80 oC, and rainwater mediums, respectively. The proposed composite coating is undoubtedly promising for industrial application and is also recommended by green protocols.
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Athira Krishnan 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.10
As part of promoting eco-friendly research & development, corrosion chemistry encourages green inhibitors for metal corrosion prevention. Thespesia Linoleic acid, n-Hexadecanoic acid, trans-Squalene, Phytol were identified as the active components responsible for corrosion inhibition. The optimum concentration of 500 ppm could deliver protection with efficiency in the range of 97%-98%. Additionally, we extended the study to evaluate the extract's capability for its use in the paint industry. The remarkable potential of the TiO2-TP composite coating thus developed was illustrated by physico-chemical, electrochemical, and surface analyses. According to the electrochemical impedance spectroscopy (EIS) study, the applied leaf extract loaded coatings resist corrosion of CS at efficiencies of 97.9%, 91.6%, and 98.5% in 1M HCl, 1M HCl at 80 oC, and rainwater mediums, respectively. The proposed composite coating is undoubtedly promising for industrial application and is also recommended by green protocols.
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