A Facile Preparation of Titanium Dioxide-Iron Oxide@Silicon Dioxide Incorporated Reduced Graphene Oxide Nanohybrid for Electrooxidation of Methanol in Alkaline Medium

Norazriena Yusoff; Swadi Vijay Kumar; Perumal Rameshkumar; Alagarsamy Pandikumar; Muhammad Mehmood Shahid; Marlinda Ab Rahman; Nay Ming Huang

doi:10.1016/j.electacta.2016.01.190

A Facile Preparation of Titanium Dioxide-Iron Oxide@Silicon Dioxide Incorporated Reduced Graphene Oxide Nanohybrid for Electrooxidation of Methanol in Alkaline Medium

Norazriena Yusoff
, Swadi Vijay Kumar
, Perumal Rameshkumar
, Alagarsamy Pandikumar
, Muhammad Mehmood Shahid
, Marlinda Ab Rahman
, Nay Ming Huang

University of Malaya

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

An iron oxide-silicon dioxide coated titanium dioxide (TiO₂-Fe₂O₃@SiO₂) incorporated reduced graphene oxide (rGO) nanohybrid was prepared by a simple hydrothermal method using titanium tetraisopropoxide (TTIP) and graphite flakes as the precursors. Tetraethoxysilane (TEOS) was used to form a SiO₂ coating on Fe₂O₃ nanoparticle surface (Fe₂O₃@SiO₂). The presence of SiO₂ layer would facilitate the formation of Fe₂O₃ on the TiO₂ surface by an electrostatic attraction that led to the formation of TiO₂-Fe₂O₃@SiO₂. The transmission electron microscopy (TEM) results revealed the successful attachment of Fe₂O₃@SiO₂ particles to the TiO₂ surface and a uniform distribution of TiO₂-Fe₂O₃@SiO₂ composites on the rGO sheet. Furthermore, the rGO/TiO₂-Fe₂O₃@SiO₂ nanohybrid modified platinum (Pt) electrode was used for the electrocatalytic oxidation of methanol in alkaline medium. The rGO/TiO₂-Fe₂O₃@SiO₂ nanohybrid with weight ratio of 1:3:1 (rGO:TiO₂:Fe₂O₃) showed a higher electrocatalytic activity toward methanol oxidation with an anodic peak current density of 2.45 mA/cm². Moreover, the nanohybrid displayed a higher stability with 91.58% retention of the initial current density after 5000 s in long term current-time curve. This newly prepared rGO/TiO₂-Fe₂O₃@SiO₂ nanohybrid could be a promising anodic catalyst for the direct methanol fuel cells (DMFCs) application.

Original language	British English
Pages (from-to)	167-176
Number of pages	10
Journal	Electrochimica Acta
Volume	192
DOIs	https://doi.org/10.1016/j.electacta.2016.01.190
State	Published - 20 Feb 2016

Keywords

iron oxide
methanol oxidation
nanohybrid
reduced graphene oxide
titanium dioxide

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.electacta.2016.01.190

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@article{3534045da9bb4d8b89845c9119d389b6,

title = "A Facile Preparation of Titanium Dioxide-Iron Oxide@Silicon Dioxide Incorporated Reduced Graphene Oxide Nanohybrid for Electrooxidation of Methanol in Alkaline Medium",

abstract = "An iron oxide-silicon dioxide coated titanium dioxide (TiO2-Fe2O3@SiO2) incorporated reduced graphene oxide (rGO) nanohybrid was prepared by a simple hydrothermal method using titanium tetraisopropoxide (TTIP) and graphite flakes as the precursors. Tetraethoxysilane (TEOS) was used to form a SiO2 coating on Fe2O3 nanoparticle surface (Fe2O3@SiO2). The presence of SiO2 layer would facilitate the formation of Fe2O3 on the TiO2 surface by an electrostatic attraction that led to the formation of TiO2-Fe2O3@SiO2. The transmission electron microscopy (TEM) results revealed the successful attachment of Fe2O3@SiO2 particles to the TiO2 surface and a uniform distribution of TiO2-Fe2O3@SiO2 composites on the rGO sheet. Furthermore, the rGO/TiO2-Fe2O3@SiO2 nanohybrid modified platinum (Pt) electrode was used for the electrocatalytic oxidation of methanol in alkaline medium. The rGO/TiO2-Fe2O3@SiO2 nanohybrid with weight ratio of 1:3:1 (rGO:TiO2:Fe2O3) showed a higher electrocatalytic activity toward methanol oxidation with an anodic peak current density of 2.45 mA/cm2. Moreover, the nanohybrid displayed a higher stability with 91.58\% retention of the initial current density after 5000 s in long term current-time curve. This newly prepared rGO/TiO2-Fe2O3@SiO2 nanohybrid could be a promising anodic catalyst for the direct methanol fuel cells (DMFCs) application.",

keywords = "iron oxide, methanol oxidation, nanohybrid, reduced graphene oxide, titanium dioxide",

author = "Norazriena Yusoff and Kumar, \{Swadi Vijay\} and Perumal Rameshkumar and Alagarsamy Pandikumar and Shahid, \{Muhammad Mehmood\} and Rahman, \{Marlinda Ab\} and Huang, \{Nay Ming\}",

note = "Funding Information: The author would like to acknowledge the financial support from University of Malaya for the Postgraduate Research Fund (PG122-2014b) and the Ministry of Higher Education of Malaysia for their High Impact Research Grant (UM.C/625/1/HIR/MOHE/05). Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd. All rights reserved.",

year = "2016",

month = feb,

day = "20",

doi = "10.1016/j.electacta.2016.01.190",

language = "British English",

volume = "192",

pages = "167--176",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - A Facile Preparation of Titanium Dioxide-Iron Oxide@Silicon Dioxide Incorporated Reduced Graphene Oxide Nanohybrid for Electrooxidation of Methanol in Alkaline Medium

AU - Yusoff, Norazriena

AU - Kumar, Swadi Vijay

AU - Rameshkumar, Perumal

AU - Pandikumar, Alagarsamy

AU - Shahid, Muhammad Mehmood

AU - Rahman, Marlinda Ab

AU - Huang, Nay Ming

N1 - Funding Information: The author would like to acknowledge the financial support from University of Malaya for the Postgraduate Research Fund (PG122-2014b) and the Ministry of Higher Education of Malaysia for their High Impact Research Grant (UM.C/625/1/HIR/MOHE/05). Publisher Copyright: © 2016 Elsevier Ltd. All rights reserved.

PY - 2016/2/20

Y1 - 2016/2/20

N2 - An iron oxide-silicon dioxide coated titanium dioxide (TiO2-Fe2O3@SiO2) incorporated reduced graphene oxide (rGO) nanohybrid was prepared by a simple hydrothermal method using titanium tetraisopropoxide (TTIP) and graphite flakes as the precursors. Tetraethoxysilane (TEOS) was used to form a SiO2 coating on Fe2O3 nanoparticle surface (Fe2O3@SiO2). The presence of SiO2 layer would facilitate the formation of Fe2O3 on the TiO2 surface by an electrostatic attraction that led to the formation of TiO2-Fe2O3@SiO2. The transmission electron microscopy (TEM) results revealed the successful attachment of Fe2O3@SiO2 particles to the TiO2 surface and a uniform distribution of TiO2-Fe2O3@SiO2 composites on the rGO sheet. Furthermore, the rGO/TiO2-Fe2O3@SiO2 nanohybrid modified platinum (Pt) electrode was used for the electrocatalytic oxidation of methanol in alkaline medium. The rGO/TiO2-Fe2O3@SiO2 nanohybrid with weight ratio of 1:3:1 (rGO:TiO2:Fe2O3) showed a higher electrocatalytic activity toward methanol oxidation with an anodic peak current density of 2.45 mA/cm2. Moreover, the nanohybrid displayed a higher stability with 91.58% retention of the initial current density after 5000 s in long term current-time curve. This newly prepared rGO/TiO2-Fe2O3@SiO2 nanohybrid could be a promising anodic catalyst for the direct methanol fuel cells (DMFCs) application.

AB - An iron oxide-silicon dioxide coated titanium dioxide (TiO2-Fe2O3@SiO2) incorporated reduced graphene oxide (rGO) nanohybrid was prepared by a simple hydrothermal method using titanium tetraisopropoxide (TTIP) and graphite flakes as the precursors. Tetraethoxysilane (TEOS) was used to form a SiO2 coating on Fe2O3 nanoparticle surface (Fe2O3@SiO2). The presence of SiO2 layer would facilitate the formation of Fe2O3 on the TiO2 surface by an electrostatic attraction that led to the formation of TiO2-Fe2O3@SiO2. The transmission electron microscopy (TEM) results revealed the successful attachment of Fe2O3@SiO2 particles to the TiO2 surface and a uniform distribution of TiO2-Fe2O3@SiO2 composites on the rGO sheet. Furthermore, the rGO/TiO2-Fe2O3@SiO2 nanohybrid modified platinum (Pt) electrode was used for the electrocatalytic oxidation of methanol in alkaline medium. The rGO/TiO2-Fe2O3@SiO2 nanohybrid with weight ratio of 1:3:1 (rGO:TiO2:Fe2O3) showed a higher electrocatalytic activity toward methanol oxidation with an anodic peak current density of 2.45 mA/cm2. Moreover, the nanohybrid displayed a higher stability with 91.58% retention of the initial current density after 5000 s in long term current-time curve. This newly prepared rGO/TiO2-Fe2O3@SiO2 nanohybrid could be a promising anodic catalyst for the direct methanol fuel cells (DMFCs) application.

KW - iron oxide

KW - methanol oxidation

KW - nanohybrid

KW - reduced graphene oxide

KW - titanium dioxide

UR - https://www.scopus.com/pages/publications/84957971372

U2 - 10.1016/j.electacta.2016.01.190

DO - 10.1016/j.electacta.2016.01.190

M3 - Article

AN - SCOPUS:84957971372

SN - 0013-4686

VL - 192

SP - 167

EP - 176

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

A Facile Preparation of Titanium Dioxide-Iron Oxide@Silicon Dioxide Incorporated Reduced Graphene Oxide Nanohybrid for Electrooxidation of Methanol in Alkaline Medium

Abstract

Keywords

UN SDGs

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