NDLI: Chemically functionalized graphene oxide thin films for selective ammonia Gas sensing

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Chemically functionalized graphene oxide thin films for selective ammonia Gas sensing

Content Provider	Scilit
Author	Kumar, Ravi Singh, Rakesh Kumar, Anil Kashyap, Rajesh Kumar, Dinesh Kumar, Mukesh
Copyright Year	2020
Description	Journal: Materials Research Express In this work graphene oxide has been functionalized using Para chloro benzoic acid (PCBA). Three different concentrations of PCBA were used for functionalization on the GO surface. Functionalization was confirmed by the study of X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR) characterization. Raman characterization was used for the study of defects on the functionalized GO surface. Langmuir–Blodgett technique was used for the deposition of a thin film. This deposited layer was used as a sensing layer for the detection of ammonia gas. Aluminum contacts were made for electrical measurement using thermal evaporation technique and annealed to obtain a good quality of contacts. The sensor behavior was observed for all three concentrations of PCBA and it has been observed that increase in PCBA concentration leads to the high sensor response and the maximum response was observed for the higher concentration of PCBA i.e. 75 mM. The senor was tested for different gas concentrations varied from 100 ppm to 1200 ppm. Also the selectivity and long term stability of prepared devices has been investigated.
Related Links	https://iopscience.iop.org/article/10.1088/2053-1591/ab66f1/pdf
ISSN	20531591
e-ISSN	20531591
DOI	10.1088/2053-1591/ab66f1
Journal	Materials Research Express
Issue Number	1
Volume Number	7
Language	English
Publisher	IOP Publishing
Publisher Date	2020-01-01
Access Restriction	Open
Subject Keyword	Journal: Materials Research Express Concentrations of Pcba
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics

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