In Situ pH Monitoring in Turbid Coastal Waters Based on Self-Electrodeposition Ir/IrO2 Electrode

doi:10.1149/1945-7111/ac208b

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 山东省海岸带环境工程技术研究中心

	In Situ pH Monitoring in Turbid Coastal Waters Based on Self-Electrodeposition Ir/IrO2 Electrode
	Zhou, Zhengwen 1,2; Pan, Dawei 1,2,3; Wang, Chenchen 1,3; Han, Haitao 1,3; Wei, Hong 1,2; Pan, Fei 1,2
刊名	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
	2021-09-01
卷号	168 期号:9 页码:8
ISSN号	0013-4651
DOI	10.1149/1945-7111/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.
资助项目	Original Innovation Project of Chinese Academy of Sciences[ZDBS-LY-DQC009] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Key R&D Program of China[2019YFD0901103]
WOS关键词	IRIDIUM-OXIDE ; ALKALINE-SOLUTIONS ; HEAVY-METALS ; SENSORS ; SALINITY ; FILMS ; IRO2
WOS研究方向	Electrochemistry ; Materials Science
语种	英语
WOS记录号	WOS:000692009600001
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
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/29721]
专题	烟台海岸带研究所_山东省海岸带环境工程技术研究中心
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.