Abstract
The inhibitive effect Carica papaya seed extract (CPSE) on the corrosion behavior of aluminium in sulphuric acid medium of pH 2.3 was investigated by using Tafel polarization and electrochemical impedance spectroscopy (EIS) techniques in the temperature range 30 to 50°C. The concentration of inhibitors used was in the range of 100-400ppm. The surface morphology was studied using scanning electron microscopy (SEM). Inhibition efficiency was found to increase with increase in inhibitor concentration and decrease with increase in temperature. CPSE acted as a mixed type inhibitor. Inhibitor underwent physisorption on the surface of the metal and followed Langmuir adsorption isotherm. The kinetic and thermodynamic parameters were calculated and discussed in detail.. CPSE emerged as a potential, cost effective eco-friendly natural inhibitor for the corrosion control of aluminium in sulphuric acid medium.
| Original language | English |
|---|---|
| Pages (from-to) | 591-598 |
| Number of pages | 8 |
| Journal | Journal of Materials and Environmental Science |
| Volume | 5 |
| Issue number | 2 |
| Publication status | Published - 2014 |
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All Science Journal Classification (ASJC) codes
- Environmental Chemistry
- Waste Management and Disposal
- Pollution
- Materials Chemistry
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Inhibitive effect of Carica papaya seed extract on aluminium in H2SO4 medium. / Pushpanjali, M.; Rao, Suma A.; Rao, Padmalatha.
In: Journal of Materials and Environmental Science, Vol. 5, No. 2, 2014, p. 591-598.Research output: Contribution to journal › Article
TY - JOUR
T1 - Inhibitive effect of Carica papaya seed extract on aluminium in H2SO4 medium
AU - Pushpanjali, M.
AU - Rao, Suma A.
AU - Rao, Padmalatha
PY - 2014
Y1 - 2014
N2 - The inhibitive effect Carica papaya seed extract (CPSE) on the corrosion behavior of aluminium in sulphuric acid medium of pH 2.3 was investigated by using Tafel polarization and electrochemical impedance spectroscopy (EIS) techniques in the temperature range 30 to 50°C. The concentration of inhibitors used was in the range of 100-400ppm. The surface morphology was studied using scanning electron microscopy (SEM). Inhibition efficiency was found to increase with increase in inhibitor concentration and decrease with increase in temperature. CPSE acted as a mixed type inhibitor. Inhibitor underwent physisorption on the surface of the metal and followed Langmuir adsorption isotherm. The kinetic and thermodynamic parameters were calculated and discussed in detail.. CPSE emerged as a potential, cost effective eco-friendly natural inhibitor for the corrosion control of aluminium in sulphuric acid medium.
AB - The inhibitive effect Carica papaya seed extract (CPSE) on the corrosion behavior of aluminium in sulphuric acid medium of pH 2.3 was investigated by using Tafel polarization and electrochemical impedance spectroscopy (EIS) techniques in the temperature range 30 to 50°C. The concentration of inhibitors used was in the range of 100-400ppm. The surface morphology was studied using scanning electron microscopy (SEM). Inhibition efficiency was found to increase with increase in inhibitor concentration and decrease with increase in temperature. CPSE acted as a mixed type inhibitor. Inhibitor underwent physisorption on the surface of the metal and followed Langmuir adsorption isotherm. The kinetic and thermodynamic parameters were calculated and discussed in detail.. CPSE emerged as a potential, cost effective eco-friendly natural inhibitor for the corrosion control of aluminium in sulphuric acid medium.
UR - http://www.scopus.com/inward/record.url?scp=84892717265&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84892717265&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84892717265
VL - 5
SP - 591
EP - 598
JO - Journal of Materials and Environmental Science
JF - Journal of Materials and Environmental Science
SN - 2028-2508
IS - 2
ER -