Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/13691
Title: Amperometric detection of NH3 by aromatic SAM-modified graphene
Authors: Yağmurcukardeş, Nesli
Bayram, Abdullah
Aydın, Hasan
Can, Mustafa
Demiç, Şerafettin
Açıkbaş, Yaşar
Çelebi, Cem
Keywords: Ammonia
Amperometric detection
Gas sensing
Grapheme (GP)
Self-assembled monolayers
Self-assembly
Aromatic compounds
Issue Date: 2023
Publisher: IEEE
Abstract: Ammonia (NH3) is a toxic substance resulting in various acute and chronic effects on individuals. NH3 detection, monitoring methods, and detection tools are desperately needed. In this work, we improved the NH3 sensing capabilities of grapheme (GP) films deposited by chemical vapor deposition (CVD) by modifying aromatic self-assembled monolayer (SAM) molecules such as 5-[(3-methylphenyl) (phenyl) amino] isophthalic acid (MeIPA) and 5-(diphenyl)amino] isophthalic acid (PhIPA) on amperometric detection method. Morphological investigations of the films were carried out by optical and scanning electron microscopy (SEM). Surface potential was characterized with Kelvin probe force microscopy (KPFM), and vibrational properties were characterized with Raman spectroscopy. MeIPA modification increased NH3 uptake by two times compared to unmodified GP. The results indicated that the SAM modification enhanced NH3 molecule adsorption and improved its periodic reversible and reproducible response using the amperometric detection system, indicating that SAM molecules might be a feasible probe for NH3. © 2001-2012 IEEE.
URI: https://doi.org/10.1109/JSEN.2023.3266167
https://hdl.handle.net/11147/13691
ISSN: 1530-437X
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File SizeFormat 
Amperometric_Detection.pdf
  Until 2025-01-01
1.82 MBAdobe PDFView/Open    Request a copy
Show full item record



CORE Recommender

Page view(s)

28
checked on Feb 23, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.