Article history: A cost effective solution assembly method has been explored for preparing Received 30 March 2017 zinc(II)1,2,3,4,8,9,10,11,15,16,17,18,22,23,24,25-hexa-decaﬂuoro-29H,31H-phthalocyanine/multi- Received in revised form 5 July 2017 walled carbon nanotubes (F ZnPc/MWCNTs-COOH) hybrid. Fourier transform infrared spectroscopy Accepted 4 August 2017 (FT-IR), Raman spectroscopy, transmission electron microscopy (TEM) and ﬁeld emission scanning Available online 7 August 2017 electron microscopy (FE-SEM) investigations conﬁrm the non-covalent anchoring of F ZnPc onto MWCNTs-COOH through п-п stacking interactions. Further, a highly sensitive and selective chemire- Keywords: sistive Cl sensor has been fabricated using F ZnPc/MWCNTs-COOH hybrid. The response of sensor 2 16 Hexadecaﬂuorinated zinc phthalocyanine is found to be 21.28% for 2 ppm of Cl with a response time of 14 s and theoretical detection limit of Carbon nanotubes the sensor is found down to 0.06 ppb. The improved Cl sensing characteristics of hybrid are found to Chlorine sensor be originated from the synergetic interaction between F ZnPc and MWCNTs-COOH. The underlying Gas sensing mechanism 16 Raman mechanism for improved gas sensing performance of F ZnPc/MWCNTs-COOH sensor towards Cl has 16 2 X-ray photoelectron and electrochemical been explained using Raman, X-ray photoelectron spectroscopy (XPS) and electrochemical impedance impedance spectroscopy spectroscopy (EIS) studies. © 2017 Elsevier
Applied Surface Science – Elsevier
Published: Jan 1, 2018
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