TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Grimmig, Roman
A1  - Gillemot, Philipp
A1  - Lindner, Simon
A1  - Schmidt, Philipp
A1  - Stucki, Samuel
A1  - Günther, Klaus
A1  - Baltruschat, Helmut
A1  - Witzleben, Steffen
T1  - Evaluating Platinum-Based Ionic Polymer Metal Composites as Potentiometric Sensors for Dissolved Ozone in Ultrapure Water Systems
JF  - Advanced Materials Technologies
N2  - Monitoring the content of dissolved ozone in purified water is often mandatory to ensure the appropriate levels of disinfection and sanitization. However, quantification bears challenges as colorimetric assays require laborious off-line analysis, while commercially available instruments for electrochemical process analysis are expensive and often lack the possibility for miniaturization and discretionary installation. In this study, potentiometric ionic polymer metal composite (IPMC) sensors for the determination of dissolved ozone in ultrapure water (UPW) systems are presented. Commercially available polymer electrolyte membranes are treated via an impregnation-reduction method to obtain nanostructured platinum layers. By applying 25 different synthesis conditions, layer thicknesses of 2.2 to 12.6 µm are obtained. Supporting radiographic analyses indicate that the platinum concentration of the impregnation solution has the highest influence on the obtained metal loading. The sensor response behavior is explained by a Langmuir pseudo-isotherm model and allows the quantification of dissolved ozone to trace levels of less than 10 µg L−1. Additional statistical evaluations show that the expected Pt loading and radiographic blackening levels can be predicted with high accuracy and significance (R2adj. > 0.90, p < 10−10) solely from given synthesis conditions.
KW  - Composites
KW  - dissolved ozone
KW  - potentiometric sensors
KW  - ionic polymer metal
KW  - impregnation-reduction
KW  - ultrapure water
Y1  - 2023
UN  - https://nbn-resolving.org/urn:nbn:de:hbz:1044-opus-67990
SN  - 2365-709X
SS  - 2365-709X
U6  - https://doi.org/10.1002/admt.202202043
DO  - https://doi.org/10.1002/admt.202202043
VL  - 8
SP  - 13
S1  - 13
PB  - Wiley-VCH
ER  -