Nanoparticle ink-enabled printed flexible electrodes for water treatment technology
Wai Yee Yeong a
a Nanyang Technological University (NTU), Singapore, Singapore
Materials for Sustainable Development Conference (MATSUS)
Proceedings of nanoGe Fall Meeting 2021 (NFM21)
#NanoPrint21. Engineered Nanomaterials and Inks for Printed, Flexible and Interfacial Electronics
Online, Spain, 2021 October 18th - 22nd
Organizers: Shweta Agarwala and Victor Sans Sangorrin
Invited Speaker, Wai Yee Yeong, presentation 246
DOI: https://doi.org/10.29363/nanoge.nfm.2021.246
Publication date: 23rd September 2021

The development of water treatment technology has been spurred by the increasing threat of water scarcity faced by the global population. Various sensors such as pH sensors, dissolved oxygen sensors, biosensors, just to name a few have been developed to aid in water treatment processes such as monitoring and assessing the water quality. The advents of nanomaterial and printed electronic technology have opened up new opportunities for printed flexible electrodes in many fields, one of them is the water treatment technology. One example is the use of printed electrodes and electrochemical impedance spectroscopy (EIS) technique to monitor the health of the water filtration membrane that is used for treating seawater. Electrode is one of the most essential components for analytes detection applications with EIS. However, it remains a challenge to fabricate a compact and functional sensing electrode that can survive under such harsh conditions as seawater is known to be corrosive.  With the advances in printing technology, the fabrication of advanced printed electrode systems with miniature designs and improved sensitivity for electrochemical sensing is made possible. This presentation aims to discuss the several aspects of printed electrodes, namely the (1) design consideration, (2) the fabrication consideration, and (3) measurement consideration for the printed electrodes. The challenges and considerations that will be explained include the material options, multi material printing, adhesion between interfaces, and compatibility of different post-processing techniques.

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