Issue 44, 2023

A high-performance pH-sensitive electrode integrated with a multi-sensing probe for online water quality monitoring

Abstract

Water quality monitoring is an essential tool in effective environmental and public health protection. This study presents a new screen-printed Co2O3–RuO2-based electrode for electrochemical pH sensing and its comprehensive morphological, compositional, potentiometric, and thermal characterization. This novel electrode is used to measure the pH of different types of environmental water (river, lake, and sea) in Poland and the pH along the water column of a lake in Germany using an underwater multi-sensor probe, the development and demonstration of which are also described. The thick film pH electrode exhibits super-Nernstian sensitivity of 70.6 ± 2.2 mV pH−1, a short response time of 2–13 s, and a stable response in media with a conductivity of up to 118 mS cm−1 at temperatures ranging from −2 to 60 °C in the pH range 1–13. The electrodes have a high level of accuracy in comparison to the commercial glass electrodes, which they maintain over a period of 3 years. The superior potentiometric characteristics such as high sensitivity, selectivity, stability, and undisturbed sensing under extreme conditions are among the significant advantages of the developed miniaturized and low-cost pH-sensing electrode. The developed underwater probe is portable, rechargeable, submersible, autonomous, provides significant water data, and does not require scientific staff for operation.

Graphical abstract: A high-performance pH-sensitive electrode integrated with a multi-sensing probe for online water quality monitoring

Article information

Article type
Paper
Submitted
26 iyl 2023
Accepted
10 okt 2023
First published
11 okt 2023

J. Mater. Chem. C, 2023,11, 15512-15520

A high-performance pH-sensitive electrode integrated with a multi-sensing probe for online water quality monitoring

K. Uppuluri, D. Szwagierczak, L. Fernandes, K. Zaraska, I. Lange, B. Synkiewicz-Musialska and L. Manjakkal, J. Mater. Chem. C, 2023, 11, 15512 DOI: 10.1039/D3TC02646A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements