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Two stage chemical bath deposition of MoO3 nanorod films

DSpace at IIT Bombay

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Title Two stage chemical bath deposition of MoO3 nanorod films
 
Creator DHARA, A
HODES, G
SARKAR, SK
 
Subject LITHIUM ION BATTERIES
TRIOXIDE THIN-FILMS
MOLYBDENUM TRIOXIDE
HEXAGONAL MOO3
HYDROTHERMAL SYNTHESIS
CATHODE MATERIAL
NANOWIRE ARRAYS
METHYLENE-BLUE
VISIBLE-LIGHT
PHASE
 
Description Thin films of hexagonal MoO3 nanorods are deposited by chemical bath deposition from a highly acidic aqueous solution containing ammonium heptamolybdate at 85 degrees C. We present a unique two-stage deposition process that results in uniform film formation even from a highly depleted solution. Growth occurs during the second stage only if the substrate removed from the first stage solution is first rinsed with water. Mechanistically, the proposed process is a combination of formation of nucleation sites at the first stage, removal or modification of a passivation layer on the nucleation sites by the rinse and chemical heterogeneity-induced growth at the second stage. Variations in either of these two deposition stages lead to control over rod dimensions and film texture. An FTIR study confirms the presence of amine and hydroxyl groups tightly bound in the crystals. Furthermore, h-MoO3 nanorod films showed good photocatalytic activity towards degradation of methylene blue (MB) under visible light.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2014-12-29T06:15:02Z
2014-12-29T06:15:02Z
2014
 
Type Article
 
Identifier RSC ADVANCES, 4(96)53694-53700
2046-2069
http://dx.doi.org/10.1039/c4ra08606f
http://dspace.library.iitb.ac.in/jspui/handle/100/17285
 
Language English