In Situ pH Monitoring in Turbid Coastal Waters Based on Self-Electrodeposition Ir/IrO2 Electrode | |
Zhou, Zhengwen1,2; Pan, Dawei1,2,3; Wang, Chenchen1,3; Han, Haitao1,3; Wei, Hong1,2; Pan, Fei1,2 | |
发表期刊 | JOURNAL OF THE ELECTROCHEMICAL SOCIETY |
ISSN | 0013-4651 |
2021-09-01 | |
卷号 | 168期号:9页码:8 |
DOI | 10.1149/1945-7111/ac208b |
英文摘要 | Direct and accurate monitoring of pH in turbid waters is a challenging task for environmental monitoring and analysis. In this study, iridium oxide (IrO2) with selective sensing ability toward H+ was produced on the surface of iridium (Ir) electrode by rapid self-electrodeposition. IrO2 was deposited on electrode surface by atomic force, which could decrease the adverse effect of the suspended particles in turbid water. Properties of the Ir/IrO2 electrode were investigated by X-ray photoelectron spectroscopy, scanning electron microscopy, and electrochemical technology. The sensitivity and response time of the Ir/IrO2 electrode for pH determination were assessed, and a rapid and linear pH response of approximately 65 +/- 3.5 mV pH(-1) was observed across a wide pH range between 1.8 and 11.9. Moreover, the electrode exhibited a good temperature linearity (20 degrees C-60 degrees C), low potential drift (0.75 mV h(-1)), high accuracy (+/- 0.05), and a long life span (up to 30 d). The practical investigation revealed faster equilibrium rate and higher stability of the Ir/IrO2 electrode than that of traditional glass pH electrode. Furthermore, the Ir/IrO2 electrode was successfully used for in situ pH monitoring in 750 formazin turbidity units (FTU) for turbid coastal river water. Therefore, the developed Ir/IrO2 pH electrode offers large applicability for in situ pH monitoring in turbid environmental water matrices. |
收录类别 | SCI |
语种 | 英语 |
关键词[WOS] | IRIDIUM-OXIDE ; ALKALINE-SOLUTIONS ; HEAVY-METALS ; SENSORS ; SALINITY ; FILMS ; IRO2 |
研究领域[WOS] | Electrochemistry ; Materials Science |
WOS记录号 | WOS:000692009600001 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.yic.ac.cn/handle/133337/29722 |
专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心 |
通讯作者 | Pan, Dawei |
作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pr, Shandong Key Lab Coastal Environm Proc,CAS Key La, Yantai 264003, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Zhengwen,Pan, Dawei,Wang, Chenchen,et al. In Situ pH Monitoring in Turbid Coastal Waters Based on Self-Electrodeposition Ir/IrO2 Electrode[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2021,168(9):8. |
APA | Zhou, Zhengwen,Pan, Dawei,Wang, Chenchen,Han, Haitao,Wei, Hong,&Pan, Fei.(2021).In Situ pH Monitoring in Turbid Coastal Waters Based on Self-Electrodeposition Ir/IrO2 Electrode.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,168(9),8. |
MLA | Zhou, Zhengwen,et al."In Situ pH Monitoring in Turbid Coastal Waters Based on Self-Electrodeposition Ir/IrO2 Electrode".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 168.9(2021):8. |
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