Oxygen reduction on iron—V. Processes in boric acid-borate buffer solutions in the 7.4–9.8 pH range
O 2 and H 2O 2 reduction was studied on Puratronic iron (99.995%) in borate buffer solutions of various pH ranging from 7.4 to 9.8. In solutions of pH < 9.3 the E- j curves are of quite irregular shapes and the limiting current is not established. Yet, in the potential region of the passivation-d...
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| Veröffentlicht in: | Corrosion science 1991, Vol.32 (5), p.563-576 |
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| container_title | Corrosion science |
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| creator | ZECEVIC, S DRAZIC, D. M GOJKOVIC, S |
| description | O
2 and H
2O
2 reduction was studied on Puratronic iron (99.995%) in borate buffer solutions of various pH ranging from 7.4 to 9.8. In solutions of pH < 9.3 the
E-
j curves are of quite irregular shapes and the limiting current is not established. Yet, in the potential region of the passivation-depassivation peak, a decrease in O
2 and H
2O
2 reduction currents over time was observed. The influence of the passivation parameters (potential, time, speed, atmosphere and presence of H
2O
2 in the solution) on the degree of the inhibition of O
2 and H
2O
2 reductions was examined. The loss of the electrocatalytic activity of the iron electrode is suggested to be due to the reaction between H
2O
2 and Fe(II) ions during the iron dissolution process occurring under the passivation-depassivation peak. The product of this reaction is an unconductive film which blocks the active electrode surface. |
| doi_str_mv | 10.1016/0010-938X(91)90107-Z |
| format | Article |
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2 and H
2O
2 reduction was studied on Puratronic iron (99.995%) in borate buffer solutions of various pH ranging from 7.4 to 9.8. In solutions of pH < 9.3 the
E-
j curves are of quite irregular shapes and the limiting current is not established. Yet, in the potential region of the passivation-depassivation peak, a decrease in O
2 and H
2O
2 reduction currents over time was observed. The influence of the passivation parameters (potential, time, speed, atmosphere and presence of H
2O
2 in the solution) on the degree of the inhibition of O
2 and H
2O
2 reductions was examined. The loss of the electrocatalytic activity of the iron electrode is suggested to be due to the reaction between H
2O
2 and Fe(II) ions during the iron dissolution process occurring under the passivation-depassivation peak. The product of this reaction is an unconductive film which blocks the active electrode surface.</description><identifier>ISSN: 0010-938X</identifier><identifier>EISSN: 1879-0496</identifier><identifier>DOI: 10.1016/0010-938X(91)90107-Z</identifier><identifier>CODEN: CRRSAA</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Corrosion ; Corrosion mechanisms ; Exact sciences and technology ; Metals. Metallurgy</subject><ispartof>Corrosion science, 1991, Vol.32 (5), p.563-576</ispartof><rights>1991</rights><rights>1991 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-2abbdb44e0a078c1342669510af532653e651ff387605eb53506ccfc3ea67b513</citedby><cites>FETCH-LOGICAL-c316t-2abbdb44e0a078c1342669510af532653e651ff387605eb53506ccfc3ea67b513</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/0010938X9190107Z$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,4009,27902,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19513574$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>ZECEVIC, S</creatorcontrib><creatorcontrib>DRAZIC, D. M</creatorcontrib><creatorcontrib>GOJKOVIC, S</creatorcontrib><title>Oxygen reduction on iron—V. Processes in boric acid-borate buffer solutions in the 7.4–9.8 pH range</title><title>Corrosion science</title><description>O
2 and H
2O
2 reduction was studied on Puratronic iron (99.995%) in borate buffer solutions of various pH ranging from 7.4 to 9.8. In solutions of pH < 9.3 the
E-
j curves are of quite irregular shapes and the limiting current is not established. Yet, in the potential region of the passivation-depassivation peak, a decrease in O
2 and H
2O
2 reduction currents over time was observed. The influence of the passivation parameters (potential, time, speed, atmosphere and presence of H
2O
2 in the solution) on the degree of the inhibition of O
2 and H
2O
2 reductions was examined. The loss of the electrocatalytic activity of the iron electrode is suggested to be due to the reaction between H
2O
2 and Fe(II) ions during the iron dissolution process occurring under the passivation-depassivation peak. The product of this reaction is an unconductive film which blocks the active electrode surface.</description><subject>Applied sciences</subject><subject>Corrosion</subject><subject>Corrosion mechanisms</subject><subject>Exact sciences and technology</subject><subject>Metals. Metallurgy</subject><issn>0010-938X</issn><issn>1879-0496</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNp9kM1KxDAUhYMoOI6-gYtsFF20Jk2TthtBBv9A0IWKuAlpejNGajMmrTg730Gf0Ccx44juhAu5Cd85N_cgtE1JSgkVB4RQklSsvNur6H4VL0Vyv4JGtCyqhOSVWEWjX2QdbYTwSAjJ4ssITS9f51PosIdm0L11HY5lves-3z5uU3zlnYYQIGDb4dp5q7HStkliq3rA9WAMeBxcOyy031T_ALhI88-39yot8ewMe9VNYROtGdUG2Po5x-jm5Ph6cpZcXJ6eT44uEs2o6JNM1XVT5zkQRYpSU5ZnQlScEmU4ywRnIDg1hpWFIBxqzjgRWhvNQImi5pSN0e7Sd-bd8wChl082aGhb1YEbgsw4zwVlZQTzJai9C8GDkTNvn5SfS0rkIlW5iEwuIpMVld-pyvso2_nxV0Gr1sTltA1_2vhXxos8codLDuKyLxa8DNpCp6GxHnQvG2f_H_QFl7iMlA</recordid><startdate>1991</startdate><enddate>1991</enddate><creator>ZECEVIC, S</creator><creator>DRAZIC, D. M</creator><creator>GOJKOVIC, S</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>1991</creationdate><title>Oxygen reduction on iron—V. Processes in boric acid-borate buffer solutions in the 7.4–9.8 pH range</title><author>ZECEVIC, S ; DRAZIC, D. M ; GOJKOVIC, S</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-2abbdb44e0a078c1342669510af532653e651ff387605eb53506ccfc3ea67b513</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Applied sciences</topic><topic>Corrosion</topic><topic>Corrosion mechanisms</topic><topic>Exact sciences and technology</topic><topic>Metals. Metallurgy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>ZECEVIC, S</creatorcontrib><creatorcontrib>DRAZIC, D. M</creatorcontrib><creatorcontrib>GOJKOVIC, S</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Corrosion science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>ZECEVIC, S</au><au>DRAZIC, D. M</au><au>GOJKOVIC, S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Oxygen reduction on iron—V. Processes in boric acid-borate buffer solutions in the 7.4–9.8 pH range</atitle><jtitle>Corrosion science</jtitle><date>1991</date><risdate>1991</risdate><volume>32</volume><issue>5</issue><spage>563</spage><epage>576</epage><pages>563-576</pages><issn>0010-938X</issn><eissn>1879-0496</eissn><coden>CRRSAA</coden><abstract>O
2 and H
2O
2 reduction was studied on Puratronic iron (99.995%) in borate buffer solutions of various pH ranging from 7.4 to 9.8. In solutions of pH < 9.3 the
E-
j curves are of quite irregular shapes and the limiting current is not established. Yet, in the potential region of the passivation-depassivation peak, a decrease in O
2 and H
2O
2 reduction currents over time was observed. The influence of the passivation parameters (potential, time, speed, atmosphere and presence of H
2O
2 in the solution) on the degree of the inhibition of O
2 and H
2O
2 reductions was examined. The loss of the electrocatalytic activity of the iron electrode is suggested to be due to the reaction between H
2O
2 and Fe(II) ions during the iron dissolution process occurring under the passivation-depassivation peak. The product of this reaction is an unconductive film which blocks the active electrode surface.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/0010-938X(91)90107-Z</doi><tpages>14</tpages></addata></record> |
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| ispartof | Corrosion science, 1991, Vol.32 (5), p.563-576 |
| issn | 0010-938X 1879-0496 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Corrosion Corrosion mechanisms Exact sciences and technology Metals. Metallurgy |
| title | Oxygen reduction on iron—V. Processes in boric acid-borate buffer solutions in the 7.4–9.8 pH range |
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