Electrochemical and photoelectrochemical study of the self‐assembled monolayer phytic acid on cupronickel B30

Abstract

2009),"Electrochemical and photoelectrochemical study of the self-assembled monolayer phytic acid on cupronickel B30", Anti-Corrosion Methods and Materials, Vol. 56 Iss 2 pp. 95 -102 Permanent link to this document: http://dx.If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The purpose of this paper is to investigate the self-assembled monolayers (SAMs) of phytic acid on cupronickel B30 surface of anticorrosion and inhibiting mechanisms. Design/methodology/approach -Electrochemical and photocurrent response methods were performed to determine the effect of phytic acid SAMs on cupronickel B30. Findings -The results indicated that phytic acid was liable to interact with B30 as a result of formation of complexes on B30 surface for anti-rust and anti-corrosion. The SAMs changed the structure of the electrochemical double layer and made the value of double layer capacitance decrease significantly. The B30 electrode showed p-type photoresponse, which came from Cu 2 O layer on its surface. The photoresponse decreased greatly due to the SAMs of phytic acid as the corrosion resisting property was enhanced. This finding was in good agreement with the results obtained from EIS and polarization curves. Adsorption of phytic acid was found to follow the Langmuir adsorption isotherm and the adsorption mechanism was typical of chemisorption. Originality/value -The SAMs of phytic acid on cupronickel B30 was gained for the first time. The photo-electrochemical method was an in situ method, which was effective for characterizing optical and electronic properties of passive films.

Potentiometric Determination of Phytic Acid and Investigations of Phytate Interactions with Some Metal Ions

“…1 Inositol phosphates (IP x , 1 ≤ x ≤ 6) are naturally occurring compounds synthetized by plants and widely found in natural environment. Many papers deal with antioxidative [2][3][4] and anticorrosion [5][6][7] properties of phytates and their role in the environment, 8 biological functions, 9 human nutrition, [10][11] and interactions with protons [12][13][14] and metallic ions 1,[15][16][17] in aqueous solutions. The magnitude of the interaction between metal ions and chelating agents is defined by the corresponding equilibrium constants, and nowadays most of them are determined experimentally by spectrophotometry, potentiometry and other techniques (NMR) in combination with computational analysis of data.…”