Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature

Research on synthesis of bismuth oxide (Bi2O3) using sol-gel method with varying calcination temperatures at 500, 600, and 700 °C has been done. This study aims to determine the effect of calcination temperature on the characteristics of the obtained products which encompasses crystal structure, sur...

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Autores principales:	Yayuk Astuti, Brigita Maria Listyani, Linda Suyati, Adi Darmawan
Formato:	article
Lenguaje:	EN
Publicado:	Department of Chemistry, Universitas Gadjah Mada 2020
Materias:	bismuth oxide sol-gel calcination temperature photocatalytic activity photocatalyst Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/80c10101deb548bcbf70a3222dc5a25e
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spelling	oai:doaj.org-article:80c10101deb548bcbf70a3222dc5a25e2021-12-02T13:24:41ZBismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature1411-94202460-157810.22146/ijc.53144https://doaj.org/article/80c10101deb548bcbf70a3222dc5a25e2020-08-01T00:00:00Zhttps://jurnal.ugm.ac.id/ijc/article/view/53144https://doaj.org/toc/1411-9420https://doaj.org/toc/2460-1578Research on synthesis of bismuth oxide (Bi2O3) using sol-gel method with varying calcination temperatures at 500, 600, and 700 °C has been done. This study aims to determine the effect of calcination temperature on the characteristics of the obtained products which encompasses crystal structure, surface morphology, band-gap energy, and photocatalytic activity for the decolorization of methyl orange dyes through its kinetic study. Bismuth oxide prepared by sol-gel method was undertaken by dissolving Bi(NO3)3·5H2O and citric acid in HNO3. The mixture was stirred then heated at 100 °C. The gel formed was dried in the oven and then calcined at 500, 600, and 700 °C for 5 h. The obtained products were a pale yellow powder, indicating the formation of bismuth oxide. This is confirmed by the existence of Bi–O and Bi–O–Bi functional groups through FTIR analysis. All three products possess the same mixed crystal structures of α-Bi2O3 (monoclinic) and γ-Bi2O3 (body center cubic), but their morphologies and band gap values are different. The higher the calcination temperature, the larger the particle size and the smaller the band gap value. The accumulative differences in characteristics appoint SG700 to have the highest photocatalytic activity compared to SG600 and SG500 as indicated by its percent degradation value and decolorization rate constant.Yayuk AstutiBrigita Maria ListyaniLinda SuyatiAdi DarmawanDepartment of Chemistry, Universitas Gadjah Madaarticlebismuth oxidesol-gelcalcination temperaturephotocatalytic activityphotocatalystChemistryQD1-999ENIndonesian Journal of Chemistry, Vol 21, Iss 1, Pp 108-117 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	bismuth oxide sol-gel calcination temperature photocatalytic activity photocatalyst Chemistry QD1-999
spellingShingle	bismuth oxide sol-gel calcination temperature photocatalytic activity photocatalyst Chemistry QD1-999 Yayuk Astuti Brigita Maria Listyani Linda Suyati Adi Darmawan Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature
description	Research on synthesis of bismuth oxide (Bi2O3) using sol-gel method with varying calcination temperatures at 500, 600, and 700 °C has been done. This study aims to determine the effect of calcination temperature on the characteristics of the obtained products which encompasses crystal structure, surface morphology, band-gap energy, and photocatalytic activity for the decolorization of methyl orange dyes through its kinetic study. Bismuth oxide prepared by sol-gel method was undertaken by dissolving Bi(NO3)3·5H2O and citric acid in HNO3. The mixture was stirred then heated at 100 °C. The gel formed was dried in the oven and then calcined at 500, 600, and 700 °C for 5 h. The obtained products were a pale yellow powder, indicating the formation of bismuth oxide. This is confirmed by the existence of Bi–O and Bi–O–Bi functional groups through FTIR analysis. All three products possess the same mixed crystal structures of α-Bi2O3 (monoclinic) and γ-Bi2O3 (body center cubic), but their morphologies and band gap values are different. The higher the calcination temperature, the larger the particle size and the smaller the band gap value. The accumulative differences in characteristics appoint SG700 to have the highest photocatalytic activity compared to SG600 and SG500 as indicated by its percent degradation value and decolorization rate constant.
format	article
author	Yayuk Astuti Brigita Maria Listyani Linda Suyati Adi Darmawan
author_facet	Yayuk Astuti Brigita Maria Listyani Linda Suyati Adi Darmawan
author_sort	Yayuk Astuti
title	Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature
title_short	Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature
title_full	Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature
title_fullStr	Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature
title_full_unstemmed	Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature
title_sort	bismuth oxide prepared by sol-gel method: variation of physicochemical characteristics and photocatalytic activity due to difference in calcination temperature
publisher	Department of Chemistry, Universitas Gadjah Mada
publishDate	2020
url	https://doaj.org/article/80c10101deb548bcbf70a3222dc5a25e
work_keys_str_mv	AT yayukastuti bismuthoxidepreparedbysolgelmethodvariationofphysicochemicalcharacteristicsandphotocatalyticactivityduetodifferenceincalcinationtemperature AT brigitamarialistyani bismuthoxidepreparedbysolgelmethodvariationofphysicochemicalcharacteristicsandphotocatalyticactivityduetodifferenceincalcinationtemperature AT lindasuyati bismuthoxidepreparedbysolgelmethodvariationofphysicochemicalcharacteristicsandphotocatalyticactivityduetodifferenceincalcinationtemperature AT adidarmawan bismuthoxidepreparedbysolgelmethodvariationofphysicochemicalcharacteristicsandphotocatalyticactivityduetodifferenceincalcinationtemperature
_version_	1718393042011947008

Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature

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