Controllable Synthesis of h-WO3 Nanoflakes by L-lysine Assisted Hydrothermal Route and Electrochemical Characterization of Nanoflakes Modified Glassy Carbon Electrode

Materials Physics and Chemistry

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Title Controllable Synthesis of h-WO3 Nanoflakes by L-lysine Assisted Hydrothermal Route and Electrochemical Characterization of Nanoflakes Modified Glassy Carbon Electrode
 
Creator Gangaiah, Vijaya Kumar
Siddaramanna, Ashoka
Adarakatti, Prashanth Shivappa
Chandrappa, Gujjarahalli Thimanna
 
Subject heat transfer. Hydrothermal; Nanoflakes; Morphology; Cyclic voltammogram; Electrochemical Impedance
 
Description Hexagonal tungsten trioxide (h-WO3) nanoflakes have been synthesized by a hydrothermal approach using L-lysine as the shape directing agent. The influence of hydrothermal reaction time and L-lysine content on the morphology of h-WO3 was investigated. The experimental results showed that the nanoflake morphology could be achieved at higher concentration of L-lysine. Based on the evolution of nanoflake morphology as a function of hydro-thermal duration, a “dissolution-crystallization-Ostwald ripening” growth mechanism has been proposed. The electro-chemical performance of h-WO3 nanoflakes has also been investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). It is found that h-WO3 modified glassy carbon electrode (GCE) showed lower charge transfer resistance and enhancement in peak current attributed to the enrichment in electroactive surface area and faster electron transfer kinetics at h-WO3 modified GCE.
 
Publisher PiscoMed Publishing Pte Ltd
 
Contributor
 
Date 2018-09-21
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion

 
Format application/pdf
 
Identifier http://ojs.piscomed.com/index.php/MPC/article/view/567
10.18282/mpc.v1i1.567
 
Source Materials Physics and Chemistry; Vol 1 , No 1; 7-14
2661-412X
 
Language eng
 
Relation http://ojs.piscomed.com/index.php/MPC/article/view/567/520
 
Rights Copyright (c) 2019 Prashanth Shivappa Adarakatti et al.
http://creativecommons.org/licenses/by-nc/4.0
 

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