Record Details

Structured composites between MnTa2O6 and porphyrins: Influence of the number of carboxylic groups grafted on porphyrins on the capacity to inhibit corrosion of steel

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Structured composites between MnTa2O6 and porphyrins: Influence of the number of carboxylic groups grafted on porphyrins on the capacity to inhibit corrosion of steel
 
Creator Birdeanu, Mihaela
Epuran, Camelia
Fratilescu, Ion
Fagadar-Cosma, Eugenia
 
Subject Corrosion inhibition
New materials
Porphyrins
Pseudo-binary
Tafel curves
XRD
 
Description 354-366
New sandwich type materials based on MnTa2O6 and porphyrins mono- and tetra-substituted with –COOH groups, namely: (tetrakis-(4-carboxy-phenyl)-porphyrin and 5-(4-carboxy-phenyl)-10,15,20-tris-phenyl-porphyrin) have been synthesized and studied to assess the importance of its corrosion inhibition ability on with regard to its of steel the number of –COOH anchors. Morphological investigations on thin films have been carried out by atomic force microscopy. The inhibition of corrosion has been evaluated by open circuit potential measurements and potentiodynamic polarization technique with Tafel representation, after drop-casting deposition onto carbon steel in 0.1M HCl media. The inhibition efficiency of the novel sandwich-type materials based on pseudo-binary oxide MnTa2O6 and tetrakis-(4-carboxy-phenyl)-porphyrin or 5-(4-carboxy-phenyl)-10,15,20-tris-phenyl-porphyrin is in the range 76-86% for tetra substituted porphyrin and 84-95% for the mono-COOH substituted porphyrin.
 
Date 2022-07-26T10:50:54Z
2022-07-26T10:50:54Z
2022-07
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/60155
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.29(4) [July 2022]