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Adsorption Mechanism of Nicotinic Acid onto a Passive Iron Surface | |
Tian Hui-Wen1,2; Li Wei-Hua1; Wang Da-Peng3; Hou Bao-Rong1; Li, WH (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Corros Sci Shandong, Qingdao 266071, Shandong, Peoples R China. | |
2012 | |
发表期刊 | ACTA PHYSICO-CHIMICA SINICA |
ISSN | 1000-6818 |
卷号 | 28期号:1页码:137-145 |
文章类型 | Article |
摘要 | Cyclic voltammetry and in situ Raman spectroscopy were used to determine the adsorption mechanism of nicotinic acid onto passive iron film surface. Its ability to form a surface complex tends to stabilize the interstitial Fe-II in Fe-III states and results in the progressive development of an insoluble film. Furthermore, an analytical investigation using a rotating electrochemical quartz crystal microbalance (rEQCM) showed that the adsorption isotherms of nicotinic acid onto iron in the active and passive states followed Langmuir-Freundlich behavior from which the adsorption constant, standard free energy of adsorption, and heterogeneity could be calculated. The organic molecules attach to the film surface by chemisorption and the interstitial cations are fixed in the octahedral sites giving stable nanocrystals. These assumptions were confirmed by scanning electron microscopy (SEM) and attenuated total reflection transform infrared (ATR FTIR) spectroscopy. |
关键词 | Nicotinic Acid Passive Film On irOn Alkaline Medium Adsorption |
学科领域 | Chemistry, Physical |
DOI | 10.3866/PKU.WHXB201228137 |
URL | 查看原文 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000299721900019 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qdio.ac.cn/handle/337002/12459 |
专题 | 海洋环境腐蚀与生物污损重点实验室 |
通讯作者 | Li, WH (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Corros Sci Shandong, Qingdao 266071, Shandong, Peoples R China. |
作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Corros Sci Shandong, Qingdao 266071, Shandong, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Qingdao Univ Sci & Technol, Minist Educ & Shandong Prov, Key Lab Rubber Plast, Qingdao 266042, Shandong, Peoples R China |
第一作者单位 | 中国科学院海洋研究所 |
推荐引用方式 GB/T 7714 | Tian Hui-Wen,Li Wei-Hua,Wang Da-Peng,et al. Adsorption Mechanism of Nicotinic Acid onto a Passive Iron Surface[J]. ACTA PHYSICO-CHIMICA SINICA,2012,28(1):137-145. |
APA | Tian Hui-Wen,Li Wei-Hua,Wang Da-Peng,Hou Bao-Rong,&Li, WH .(2012).Adsorption Mechanism of Nicotinic Acid onto a Passive Iron Surface.ACTA PHYSICO-CHIMICA SINICA,28(1),137-145. |
MLA | Tian Hui-Wen,et al."Adsorption Mechanism of Nicotinic Acid onto a Passive Iron Surface".ACTA PHYSICO-CHIMICA SINICA 28.1(2012):137-145. |
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