Effect Crosslinking in Sensitivity of Chitosan-Graphene Film Sensor for Detecting Urea Fertilizer

Author(s):

Vinny Dwi Kartika , Department of Mathematics and Natural Science Universitas Sumatera Utara; Irwana Nainggolan, Department of Mathematics and Natural Science Universitas Sumatera Utara; Harry Agusnar, Department of Mathematics and Natural Science Universitas Sumatera Utara

Keywords:

Chitosan, Crosslinking, Electrodeposition, Graphene, Sensor, Urea Fertilizer

Abstract:

Chitosan/graphene film sensors have been successfully fabrication using electrodeposition method and cross-linked by glutaraldehyde. The effect of graphene addition on chitosan film sensors have proven improve the sensitivity of chitosan film sensors. Chitosan solution added with graphene with variation 0,025 g, 0,05 g, 0,075 g, and 0,1 g. The sensing properties of chitosan/graphene film sensors are tested towards urea concentrations of 1%, 2%, 4%, 6%, and 10%. The measurement results of maximum voltage from chitosan/graphene crosslinked glutaraldehyde (0,6231 V) is greater than pure chitosan sensors (0,121 V). Based on the sensing properties and SEM analysis result obtained that the Chitosan/grafene film sensors with an additional 0,075 g graphene is the best variation, where this Chitosan/graphene film sensors showed good sensitivity and reproducibility, long life time and smoother surface area. In this experiment is also using FT-IR and XRD for characterization.

Other Details:

Manuscript Id	:	IJSTEV6I3002
Published in	:	Volume : 6, Issue : 3
Publication Date	:	01/10/2019
Page(s)	:	4-10

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