Interfacial properties determine the performance of embedded IrOx pH sensor in cement mortar
文献类型：期刊论文
| 作者 | Wang, Yuanxia3,4; Li, Tianyu2; Liu, Nazhen4; Jiang, Quantong4; Liu, Xiangju4 ; Tian, Huiwen4; Sun, Congtao4; Song, Lijun1; Li, Chengtao1; Hou, Baorong4
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| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2025-05-01 |
| 卷号 | 36页码:5211-5221 |
| 关键词 | IrO x pH sensor Potentiometric response Cement mortar Pore water Interfacial transition zone |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2025.04.162 |
| 通讯作者 | Liu, Nazhen(liunazhen@qdio.ac.cn) ; Liu, Xiangju(liuxiangju124@163.com) |
| 英文摘要 | IrOxelectrode has been reported to show promising application in pH determination in many environments. Once embedded in cement mortar, the performance of IrOx electrode is poor. The failed pH determination is due to inaccurate potential measurement of embedded IrOxelectrodes, including potential difference across aqueous solution/mortar interface (E1), potential difference generated due to transport of charge carriers in pore structure of cement mortar (E2), and potential difference across interfacial transition zone (ITZ)/IrOx electrode interface (E3). E1 is measured to be 19.6 mV, leading to a lower calculated pH by 0.39. E2 is 20.9 mV, indicating E2 associated error in pH determination is also minor (0.42 pH). E3 (of-317.3 mV) is confirmed to introduce serious errors in potential measurement, due to excessive resistance across the ITZ area. The microstructure of ITZ is studied by X-ray computed tomography (mu XCT). In the case of OPC, abnormal porosity is observed. Although the continuous pores can't be detected by mu XCT, it is proposed the presence of abundant continuous pores is essential for a meaningful measurement of the IrOx electrode potential and the subsequent calculation of pH in pore water. |
| WOS关键词 | PORE-SIZE DISTRIBUTION ; CONCRETE ; CORROSION ; OXIDE ; CARBONATION ; CHLORIDE ; STEEL ; PASTE |
| 资助项目 | National Nat-ural Science Foundation of China[51901222] ; National Nat-ural Science Foundation of China[52201092] ; CAS Pioneer Hundred Talents Program |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001477799500001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/201674]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Liu, Nazhen; Liu, Xiangju |
| 作者单位 | 1.Suzhou Nucl Power Res Inst Co Ltd, Suzhou 215004, Peoples R China 2.Sanjiang Univ, Sch Civil Engn, Nanjing 210012, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yuanxia,Li, Tianyu,Liu, Nazhen,et al. Interfacial properties determine the performance of embedded IrOx pH sensor in cement mortar[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2025,36:5211-5221. |
| APA | Wang, Yuanxia.,Li, Tianyu.,Liu, Nazhen.,Jiang, Quantong.,Liu, Xiangju.,...&Hou, Baorong.(2025).Interfacial properties determine the performance of embedded IrOx pH sensor in cement mortar.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,36,5211-5221. |
| MLA | Wang, Yuanxia,et al."Interfacial properties determine the performance of embedded IrOx pH sensor in cement mortar".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 36(2025):5211-5221. |
入库方式： OAI收割
来源：海洋研究所
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