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
ISSN0013-4651
2021-09-01
卷号168期号:9页码:8
DOI10.1149/1945-7111/ac208b
通讯作者Pan, Dawei(dwpan@yic.ac.cn)
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.
资助机构Original Innovation Project of Chinese Academy of Sciences; Strategic Priority Research Program of Chinese Academy of Sciences; National Key R&D Program of China
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.cnhttp://ir.yic.ac.cn/handle/133337/29722
专题中科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 7714Zhou, 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.
APAZhou, 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.
MLAZhou, 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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