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Title: 3D dendritic α-Fe{sub 2}O{sub 3} nano-architectures: Synthesis and its application on electrochemical non-enzymatic H{sub 2}O{sub 2} sensing

In this manuscript we have successfully synthesized a large scale 3D dendritic α-Fe{sub 2}O{sub 3} hierarchical structure via a hydrothermal reaction. The crystallinity, composition, purity, morphology of the synthesized α-Fe{sub 2}O{sub 3} are characterized by powder X-ray diffraction (PXRD), field emission scanning electron microscopic (FESEM), energy dispersive X-ray spectroscopic (EDS). FESEM image reveals that the individual α-Fe{sub 2}O{sub 3} dendrite consists of a long central trunk with secondary and tertiary branches. For electrochemical H{sub 2}O{sub 2} sensing we have carried out cyclic voltammetry (CV), amperometric i-t measurement. It has been found that the current density vs. H{sub 2}O{sub 2} concentration calibration curve is linear in nature. The present study reveals that the dendritic α-Fe{sub 2}O{sub 3} hierarchical structure exhibits very sensitive electrochemical sensing capability towards H{sub 2}O{sub 2} reduction.
Authors:
 [1] ;  [2] ; ; ; ; ;  [3] ; ;  [1]
  1. Department of Physics, Jadavpur University, Kolkata -700032 (India)
  2. (India)
  3. Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064 (India)
Publication Date:
OSTI Identifier:
22490292
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMPEROMETRY; CONCENTRATION RATIO; CURRENT DENSITY; DENDRITES; ELECTROCHEMISTRY; FERRITES; FIELD EMISSION; HYDROGEN PEROXIDE; HYDROTHERMAL SYNTHESIS; IRON OXIDES; MORPHOLOGY; POWDERS; REDUCTION; SCANNING ELECTRON MICROSCOPY; VOLTAMETRY; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY