Self-Referenced Smartphone Imaging for Visual Screening of HS Using Cu O-Polypyrrole Conductive Aerogel Doped with Graphene Oxide Framework.

Anal Chem

Key Laboratory of Analytical Science for Food Safety and Biology (MOE and Fujian Province), State Key Laboratory of Photocatalysis on Energy and Environment, Department of Chemistry , Fuzhou University, Fuzhou 350116 , People's Republic of China.

Published: August 2018

Cu O-polypyrrole conductive aerogel loaded on graphene oxide framework (Cu O-PPy@GO) with a three-dimensional (3D) porous architecture was utilized for high-efficient visual screening of HS on a flexible paper substrate. The detectable signal was acquired on a portable smartphone by using a self-referenced imaging platform equipped with the light emitting diode (LED) accompanying an image processing. As a proof-of-concept, Cu O-PPy@GO aerogel-based sensing strategy was also developed for NaS detection and egg spoilage monitoring. Such a flexible paper-supported sensor is expected for potential application in portable and wearable food-safety fields.

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http://dx.doi.org/10.1021/acs.analchem.8b03011DOI Listing

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