Development of highly-stable binder-free chemical sensor electrodes for p-nitroaniline detection

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>Herein, pre-seeded fluorine doped tin oxide (FTO) glass substrates were used as an electrode for zinc oxide nanorods (ZnO NRs) growth by a low-temperature solution route in order to fabricate binder-free high-sensitive chemical sensor. The vertically-grown ZnO NRs exhibited a more favorable active morphology and improved sensing properties for <I>p</I>-nitroaniline (pNA) detection. On investigation with different concentrations of pNA, the ZnO NRs/FTO electrode showed an excellent sensitivity (10.18μAμM<SUP>−1</SUP> cm<SUP>−2</SUP>) and low detection limit (0.5μM) with good selectivity, outstanding long-term stability, and high reproducibility. Collectively, the present work emphasizes the potency of ZnO NRs/FTO electrodes for fabrication of an efficient and reliable chemical sensing device with improved performances.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Solution-based, direct growth of ZnO nanorods on FTO electrode. </LI> <LI> Used successfully for the detection of p-nitroaniline chemical. </LI> <LI> As-fabricated sensor showed excellent sensitivity and outstanding long-term stability. </LI> <LI> The chemical sensors were highly reproducible and repeatable. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>