Ti(IV)-doped γ-Fe2O3 nanoparticles possessing unique textural and chemical properties: Enhanced suppression of phase transformation and promising catalytic activity

Abbas Khaleel; Maliha Parvin; Moahmmed AlTabaji; Ahmed Al-zamly

doi:10.1016/j.jssc.2018.01.008

Ti(IV)-doped γ-Fe₂O₃ nanoparticles possessing unique textural and chemical properties: Enhanced suppression of phase transformation and promising catalytic activity

Abbas Khaleel, Maliha Parvin, Moahmmed AlTabaji, Ahmed Al-zamly

Department of Chemistry

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

5 Citations (Scopus)

Abstract

Nanostructured Ti(IV)-doped γ-Fe₂O₃ was prepared via a sol-gel method, and the effect of doping on the phase stability, textural properties, and catalytic activity was investigated. Well-dispersed 10% Ti in γ-Fe₂O₃ structure was found to significantly suppress its conversion to α-Fe₂O₃. While undoped product contained both phases, γ- and α-Fe₂O₃, at 400 °C, its doped counterpart contained γ-Fe₂O₃ as the sole phase at temperatures as high as 500 °C and partial conversion started only at 550 °C. Doping also resulted in modified textural properties, including smaller particles, larger surface areas, and higher mesoporosity, as well as enhanced reducibility and catalytic activity.

Original language	English
Pages (from-to)	91-97
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	259
DOIs	https://doi.org/10.1016/j.jssc.2018.01.008
Publication status	Published - Mar 2018

Keywords

Metal oxides
Nanoparticles
Oxidation catalysis
Sol-gel preparation
γ-FeO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.jssc.2018.01.008

Cite this

@article{c74aed24dc1147449814f1f650d91728,

title = "Ti(IV)-doped γ-Fe2O3 nanoparticles possessing unique textural and chemical properties: Enhanced suppression of phase transformation and promising catalytic activity",

abstract = "Nanostructured Ti(IV)-doped γ-Fe2O3 was prepared via a sol-gel method, and the effect of doping on the phase stability, textural properties, and catalytic activity was investigated. Well-dispersed 10% Ti in γ-Fe2O3 structure was found to significantly suppress its conversion to α-Fe2O3. While undoped product contained both phases, γ- and α-Fe2O3, at 400 °C, its doped counterpart contained γ-Fe2O3 as the sole phase at temperatures as high as 500 °C and partial conversion started only at 550 °C. Doping also resulted in modified textural properties, including smaller particles, larger surface areas, and higher mesoporosity, as well as enhanced reducibility and catalytic activity.",

keywords = "Metal oxides, Nanoparticles, Oxidation catalysis, Sol-gel preparation, γ-FeO",

author = "Abbas Khaleel and Maliha Parvin and Moahmmed AlTabaji and Ahmed Al-zamly",

note = "Funding Information: This work was financially supported by Emirates Center for Energy and Environment Research (ECEER) at UAEU , grant no. ECEER-01/15/02/14 . The authors thank Mr. Abdul Razack Hajamohideen, Dpartment of Physics, and Mr. Saeed Tariq, Faculty of Medicine and Health Sciences, UAE University, for the SEM-EDS analysis and the TEM micrographs. Publisher Copyright: {\textcopyright} 2018 Elsevier Inc.",

year = "2018",

month = mar,

doi = "10.1016/j.jssc.2018.01.008",

language = "English",

volume = "259",

pages = "91--97",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

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T1 - Ti(IV)-doped γ-Fe2O3 nanoparticles possessing unique textural and chemical properties

T2 - Enhanced suppression of phase transformation and promising catalytic activity

AU - Khaleel, Abbas

AU - Parvin, Maliha

AU - AlTabaji, Moahmmed

AU - Al-zamly, Ahmed

N1 - Funding Information: This work was financially supported by Emirates Center for Energy and Environment Research (ECEER) at UAEU , grant no. ECEER-01/15/02/14 . The authors thank Mr. Abdul Razack Hajamohideen, Dpartment of Physics, and Mr. Saeed Tariq, Faculty of Medicine and Health Sciences, UAE University, for the SEM-EDS analysis and the TEM micrographs. Publisher Copyright: © 2018 Elsevier Inc.

PY - 2018/3

Y1 - 2018/3

N2 - Nanostructured Ti(IV)-doped γ-Fe2O3 was prepared via a sol-gel method, and the effect of doping on the phase stability, textural properties, and catalytic activity was investigated. Well-dispersed 10% Ti in γ-Fe2O3 structure was found to significantly suppress its conversion to α-Fe2O3. While undoped product contained both phases, γ- and α-Fe2O3, at 400 °C, its doped counterpart contained γ-Fe2O3 as the sole phase at temperatures as high as 500 °C and partial conversion started only at 550 °C. Doping also resulted in modified textural properties, including smaller particles, larger surface areas, and higher mesoporosity, as well as enhanced reducibility and catalytic activity.

AB - Nanostructured Ti(IV)-doped γ-Fe2O3 was prepared via a sol-gel method, and the effect of doping on the phase stability, textural properties, and catalytic activity was investigated. Well-dispersed 10% Ti in γ-Fe2O3 structure was found to significantly suppress its conversion to α-Fe2O3. While undoped product contained both phases, γ- and α-Fe2O3, at 400 °C, its doped counterpart contained γ-Fe2O3 as the sole phase at temperatures as high as 500 °C and partial conversion started only at 550 °C. Doping also resulted in modified textural properties, including smaller particles, larger surface areas, and higher mesoporosity, as well as enhanced reducibility and catalytic activity.

KW - Metal oxides

KW - Nanoparticles

KW - Oxidation catalysis

KW - Sol-gel preparation

KW - γ-FeO

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