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Title: Electrochemical Deposition of Iron Nanoneedles on Titanium Oxide Nanotubes

Abstract

Iron as a catalyst has wide applications for hydrogen generation from ammonia, photodecomposition of organics, and carbon nanotube growth. Tuning the size and shape of iron is meaningful for improving the catalysis efficiency. It is the objective of this work to prepare nanostructured iron with high surface area via electrochemical deposition. Iron nanoneedles were successfully electrodeposited on Ti supported TiO2 nanotube arrays in a chlorine-based electrolyte containing 0.15 M FeCl2 {center_dot} 4H2O and 2.0 M HCl. Transmission electron microscopic analysis reveals that the average length of the nanoneedles is about 200 nm and the thickness is about 10 nm. It has been found that a high overpotential at the cathode made of Ti/TiO2 nanotube arrays is necessary for the formation of the nanoneedles. Cyclic voltammetry test indicates that the electrodeposition of iron nanoneedles is a concentration-limited process.

Authors:
; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) Center for Functional Nanomaterials
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1041591
Report Number(s):
BNL-96602-2011-JA
Journal ID: ISSN 0167-577X; MLETDJ; R&D Project: NC-001; TRN: US201212%%9
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Materials Letters
Additional Journal Information:
Journal Volume: 65; Journal Issue: 19-20; Journal ID: ISSN 0167-577X
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AMMONIA; CARBON; CATALYSIS; CATALYSTS; CATHODES; CHLORINE; DEPOSITION; EFFICIENCY; ELECTRODEPOSITION; ELECTROLYTES; ELECTRON MICROSCOPY; ELECTRONS; IRON; NANOTUBES; SHAPE; SURFACE AREA; THICKNESS; TITANIUM OXIDES; TUNING; catalyst; TiO2 nanotube; iron nanoneedles; functional nanomaterials

Citation Formats

Gan Y. X., Zhang L., and Gan B.J. Electrochemical Deposition of Iron Nanoneedles on Titanium Oxide Nanotubes. United States: N. p., 2011. Web. doi:10.1016/j.matlet.2011.06.087.
Gan Y. X., Zhang L., & Gan B.J. Electrochemical Deposition of Iron Nanoneedles on Titanium Oxide Nanotubes. United States. doi:10.1016/j.matlet.2011.06.087.
Gan Y. X., Zhang L., and Gan B.J. Sat . "Electrochemical Deposition of Iron Nanoneedles on Titanium Oxide Nanotubes". United States. doi:10.1016/j.matlet.2011.06.087.
@article{osti_1041591,
title = {Electrochemical Deposition of Iron Nanoneedles on Titanium Oxide Nanotubes},
author = {Gan Y. X. and Zhang L. and Gan B.J.},
abstractNote = {Iron as a catalyst has wide applications for hydrogen generation from ammonia, photodecomposition of organics, and carbon nanotube growth. Tuning the size and shape of iron is meaningful for improving the catalysis efficiency. It is the objective of this work to prepare nanostructured iron with high surface area via electrochemical deposition. Iron nanoneedles were successfully electrodeposited on Ti supported TiO2 nanotube arrays in a chlorine-based electrolyte containing 0.15 M FeCl2 {center_dot} 4H2O and 2.0 M HCl. Transmission electron microscopic analysis reveals that the average length of the nanoneedles is about 200 nm and the thickness is about 10 nm. It has been found that a high overpotential at the cathode made of Ti/TiO2 nanotube arrays is necessary for the formation of the nanoneedles. Cyclic voltammetry test indicates that the electrodeposition of iron nanoneedles is a concentration-limited process.},
doi = {10.1016/j.matlet.2011.06.087},
journal = {Materials Letters},
issn = {0167-577X},
number = 19-20,
volume = 65,
place = {United States},
year = {2011},
month = {10}
}