Synthesis and electrochemical properties of silver dendrites and silver dendrites/rGO composite for applications in paracetamol sensing

Journal Article · Sun Apr 15 04:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2017.12.044· OSTI ID:22803933

Dhanush, S.; Sreejesh, M.; Bindu, K. ^[1]; Chowdhury, P. ^[2]

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1. Materials Research Laboratory, Department of Physics, National Institute of Technology, Karnataka Surathkal, 575 025 (India)
2. Nanomaterials Research Laboratory, Surface Engineering Division, National Aerospace Laboratories, Council of Scientific and Industrial Research, Bangalore, 560 017, Karnataka (India)

Highlights: • Synthesis of Ag dendrites and GO/Ag dendrites composites by Galvanic Replacement method. • Ag dendrites are wrapped over graphene sheets. • High sensitivity (10.046 μA cm{sup −2} mM{sup -1)} and lower limit of detection of 0.025 μM for sensing of Paracetamol. - Abstract: Electrochemical sensors are one of the important applications of electrochemistry. In this paper, synthesis, characterization and application of Silver Dendrites and Silver Dendrites/rGO sensors for simple and fast determination of Paracetamol are described. Silver dendrites and their composite with graphene oxide were synthesized by galvanic replacement method. The synthesized samples were characterized by XRD, SEM and TEM. XRD reveals the FCC structure of silver and TEM images show the formation of dendritic silver wrapped in the graphene sheets. The Electrochemical paracetamol sensing properties of these samples were tested using cyclic voltammetry and chronoamperometry. The silver dendrites exhibit a sensitivity of 2.807 × 10{sup 5}μA/mM/g and a lower detection limit of 2.5 μM, whereas, the composite with graphene oxide exhibits a high sensitivity of 2.511 × 10{sup 6}μA /mM/g with a lower detection limit of 0.025 μM.

• OSTI ID: 22803933
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 100; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMPEROMETRY
DENDRITES
ELECTROCHEMISTRY
FCC LATTICES
GRAPHENE
IMAGES
OXIDES
SCANNING ELECTRON MICROSCOPY
SENSITIVITY
SILVER
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
VOLTAMETRY
X-RAY DIFFRACTION