20.500.12556/DiRROS-16615 IoT electrochemical sensor with integrated ▫$Ni(OH)_2–Ni$▫ nanowires for detecting formaldehyde in tap water Simple, low-cost methods for sensing volatile organic compounds that leave no trace and do not have a detrimental effect on the environment are able to protect communities from the impacts of contaminants in water supplies. This paper reports the development of a portable, autonomous, Internet of Things (IoT) electrochemical sensor for detecting formaldehyde in tap water. The sensor is assembled from electronics, i.e., a custom-designed sensor platform and developed HCHO detection system based on Ni(OH)2–Ni nanowires (NWs) and synthetic-paper-based, screen-printed electrodes (pSPEs). The sensor platform, consisting of the IoT technology, a Wi-Fi communication system, and a miniaturized potentiostat can be easily connected to the Ni(OH)2–Ni NWs and pSPEs via a three-terminal electrode. The custom-made sensor, which has a detection capability of 0.8 µM/24 ppb, was tested for an amperometric determination of the HCHO in deionized (DI) and tap-water-based alkaline electrolytes. This promising concept of an electrochemical IoT sensor that is easy to operate, rapid, and affordable (it is considerably cheaper than any lab-grade potentiostat) could lead to the straightforward detection of HCHO in tap water. formaldehyde electrochemical sensor nickel tap water elektrokemični senzorji voda s pipe true false true MDPI Švica Angleški jezik Slovenski jezik © 2023 by the authors Neznano 2023-06-06 08:23:16 2023-06-06 08:23:17 2023-06-15 09:52:26 0000-00-00 00:00:00 2023 0 0 Nasl. z nasl. zaslona; Soavtorji: Abhilash Krishnamurthy, Kristina Žagar Soderžnik, Urška Kavčič, Igor Karlovits, Beno Klopčič, Sašo Šturm, Kristina Žužek; Opis vira z dne 29. 5. 2023; str. 1-11 iss. 10, [article no.] 4676 Vol. 23 May 2023 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 2023-05-09 2023-05-11 681.5 1424-8220 10.3390/s23104676 153733635 https://www.mdpi.com/1424-8220/23/10/4676/htm 1 a1556111-0432-11ee-9634-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22504 trafela.pdf trafela.pdf 1 E7EAA4AF92C347B04751EA1EF81CB255 7d39f60783fa8ec998fbecf88e8e425553b97d04b93083fc4058930a5e4f931f 1da2d83e-043a-11ee-9634-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22508 Institut Jožef Stefan 0 0 0