Staff View: Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties

Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties

In this study, pure phase BiFeO3 was prepared via a facile sol-gel auto-ignition route using water as a solvent. The influence of citric acid to metal nitrates molar ratio on physicochemical properties of BiFeO3 was also investigated through FTIR, XRD, PL, UV, SEM, and BET analysis. The XRD of the p...

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Main Authors:	Mhamad, Shakhawan Ahmad, Ali, Arman Abdalla, Mohtar, Safia Syazana, Aziz, Farhana, Aziz, Madzlan, Jaafar, Juhana, Yusof, Norhaniza, Wan Salleh, Wan Norharyati, Ismail, Ahmad Fauzi, Chandren, Sheela
Format:	Article
Published:	Elsevier B. V. 2022
Subjects:	QD Chemistry
Online Access:	http://eprints.utm.my/103003/ http://dx.doi.org/10.1016/j.matchemphys.2022.125983
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spelling	my.utm.1030032023-10-12T08:44:49Z http://eprints.utm.my/103003/ Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties Mhamad, Shakhawan Ahmad Ali, Arman Abdalla Mohtar, Safia Syazana Aziz, Farhana Aziz, Madzlan Jaafar, Juhana Yusof, Norhaniza Wan Salleh, Wan Norharyati Ismail, Ahmad Fauzi Chandren, Sheela QD Chemistry In this study, pure phase BiFeO3 was prepared via a facile sol-gel auto-ignition route using water as a solvent. The influence of citric acid to metal nitrates molar ratio on physicochemical properties of BiFeO3 was also investigated through FTIR, XRD, PL, UV, SEM, and BET analysis. The XRD of the prepared samples revealed the rhombohedral perovskite structures belong to space group R3c. In addition, the BFO2:1 sample showed the smallest crystallite size (42 nm) with the highest purity and recombination rate; while the BFO1:2 sample showed the lowest purity and electron charge recombination rate. The surface areas of the BFO1:1, BFO1:2, and BFO2:1 samples were 1.63, 2.13, and 1.84 m2/g, respectively. Moreover, the bandgaps were found to be 2.17, 2.11, and 2.21 eV for the prepared BFO1:1, BFO1:2, and BFO2:1, respectively. In addition, the appearance of a near-IR band around 814 cm−1 confirms the presence of Bi2Fe4O9 byproduct in the BFO1:2 sample. Finally, SEM revealed that BFO2:1 sample was well-distributed and exhibited uniform morphology, referring to citric acid's ability to stabilize and disperse bismuth ferrite NPs. Furthermore, BFO1:2 sample showed enhanced photocatalytic activity in CR dye degradation than BFO1:1 and BFO2:1 samples, attributed by the increase in the surface area and minimized electron-hole recombination. This strategy eliminates the use of conventional organic solvents and provides an effortless and efficient way to prepare pure BiFeO3 and BiFeO3/Bi2Fe4O9 heterojunction nanocomposite that are potentially applicable for photocatalyst and in solar cell production. Elsevier B. V. 2022-04-15 Article PeerReviewed Mhamad, Shakhawan Ahmad and Ali, Arman Abdalla and Mohtar, Safia Syazana and Aziz, Farhana and Aziz, Madzlan and Jaafar, Juhana and Yusof, Norhaniza and Wan Salleh, Wan Norharyati and Ismail, Ahmad Fauzi and Chandren, Sheela (2022) Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties. Materials Chemistry and Physics, 282 (NA). pp. 1-8. ISSN 0254-0584 http://dx.doi.org/10.1016/j.matchemphys.2022.125983 DOI:10.1016/j.matchemphys.2022.125983
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	QD Chemistry
spellingShingle	QD Chemistry Mhamad, Shakhawan Ahmad Ali, Arman Abdalla Mohtar, Safia Syazana Aziz, Farhana Aziz, Madzlan Jaafar, Juhana Yusof, Norhaniza Wan Salleh, Wan Norharyati Ismail, Ahmad Fauzi Chandren, Sheela Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties
description	In this study, pure phase BiFeO3 was prepared via a facile sol-gel auto-ignition route using water as a solvent. The influence of citric acid to metal nitrates molar ratio on physicochemical properties of BiFeO3 was also investigated through FTIR, XRD, PL, UV, SEM, and BET analysis. The XRD of the prepared samples revealed the rhombohedral perovskite structures belong to space group R3c. In addition, the BFO2:1 sample showed the smallest crystallite size (42 nm) with the highest purity and recombination rate; while the BFO1:2 sample showed the lowest purity and electron charge recombination rate. The surface areas of the BFO1:1, BFO1:2, and BFO2:1 samples were 1.63, 2.13, and 1.84 m2/g, respectively. Moreover, the bandgaps were found to be 2.17, 2.11, and 2.21 eV for the prepared BFO1:1, BFO1:2, and BFO2:1, respectively. In addition, the appearance of a near-IR band around 814 cm−1 confirms the presence of Bi2Fe4O9 byproduct in the BFO1:2 sample. Finally, SEM revealed that BFO2:1 sample was well-distributed and exhibited uniform morphology, referring to citric acid's ability to stabilize and disperse bismuth ferrite NPs. Furthermore, BFO1:2 sample showed enhanced photocatalytic activity in CR dye degradation than BFO1:1 and BFO2:1 samples, attributed by the increase in the surface area and minimized electron-hole recombination. This strategy eliminates the use of conventional organic solvents and provides an effortless and efficient way to prepare pure BiFeO3 and BiFeO3/Bi2Fe4O9 heterojunction nanocomposite that are potentially applicable for photocatalyst and in solar cell production.
format	Article
author	Mhamad, Shakhawan Ahmad Ali, Arman Abdalla Mohtar, Safia Syazana Aziz, Farhana Aziz, Madzlan Jaafar, Juhana Yusof, Norhaniza Wan Salleh, Wan Norharyati Ismail, Ahmad Fauzi Chandren, Sheela
author_facet	Mhamad, Shakhawan Ahmad Ali, Arman Abdalla Mohtar, Safia Syazana Aziz, Farhana Aziz, Madzlan Jaafar, Juhana Yusof, Norhaniza Wan Salleh, Wan Norharyati Ismail, Ahmad Fauzi Chandren, Sheela
author_sort	Mhamad, Shakhawan Ahmad
title	Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties
title_short	Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties
title_full	Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties
title_fullStr	Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties
title_full_unstemmed	Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties
title_sort	synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties
publisher	Elsevier B. V.
publishDate	2022
url	http://eprints.utm.my/103003/ http://dx.doi.org/10.1016/j.matchemphys.2022.125983
_version_	1781777630279761920
score	13.244368

Synthesis of bismuth ferrite by sol-gel auto combustion method: impact of citric acid concentration on its physicochemical properties

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