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Reference type: Journal
Authors: Tang XH, Raskin JP, Lahem D, Krumpmann A, Decroly A, Debliquy M
Article Title: A Formaldehyde Sensor Based on Molecularly-Imprinted Polymer on a TiO2 Nanotube Array.
Publication date: 2017
Journal: Sensors
Volume: 17
Issue: (4)
Page numbers: ArticleNo675.
DOI: 10.3390/s17040675
Alternative URL: http://www.mdpi.com/1424-8220/17/4/675

Abstract: Today, significant attention has been brought to the development of sensitive, specific, cheap, and reliable sensors for real-time monitoring. Molecular imprinting technology is a versatile and promising technology for practical applications in many areas, particularly chemical sensors. Here, we present a chemical sensor for detecting formaldehyde, a toxic common indoor pollutant gas. Polypyrrole-based molecularly-imprinted polymer (PPy-based MIP) is employed as the sensing recognition layer and synthesized on a titanium dioxide nanotube array (TiO2-NTA) for increasing its surface-to-volume ratio, thereby improving the sensor performance. Our sensor selectively detects formaldehyde in the parts per million (ppm) range at room temperature. It also shows a long-term stability and small fluctuation to humidity variations. These are attributed to the thin fishnet-like structure of the PPy-based MIP on the highly-ordered and vertically-aligned TiO2-NTA
Template and target information: formaldehyde
Author keywords: formaldehyde sensor, molecularly-imprinted polypyrrole, titanium dioxide nanotube array, humidity influence

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