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Core-shell Fe3O4/SiO2/TiO2 Magnetic Modified Ag for the Photocatalytic Degradation of Congo Red Dye and Antibacterial Activity

Bulletin of Chemical Reaction Engineering & Catalysis · Vol. ume (2023) · pp. 315–330

DOI
10.9767/bcrec.19275
ISSN
1978-2993
Published
2023-08-20
Publisher
Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
Language
eng
License
creativecommons.org/licenses/by-sa/4.0

Abstract

Disposal of dye wastewater can induce detrimental consequences for human health and the environment. The study aims to synthesize composites consisting of core-shell Fe3O4/SiO2/TiO2 modified with Ag. The composites comprise a Fe3O4 core, a SiO2 interlayer, and a TiO2 shell, with Ag being mobilized on the surface of the core and shell structures. Fe3O4/SiO2/TiO2@Ag composite was employed in the photocatalytic degradation of Congo red dye and antibacterial activity test. The degradation was facilitated by visible light irradiation while considering different factors such as pH solution, the photocatalyst dosage, and the dye's initial concentration. The composite was characterized using X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), Scanning Electron Microscopy-Electron Dispersive X-ray Spectroscopy (SEM-EDS), Vibrating Sample Magnetometer (VSM), and UV-Vis Diffuse Reflectance Spectroscopy (UV-Vis DRS). The findings indicated that the composite exhibited strong magnetic, measuring 49.4 emu/g, with a band gap of 2.92 eV. The composite showed commendable catalytic properties, with degradation efficiency of 96.52% for Congo red dye under conditions: a pH solution of 4, a dosage of 0.5 g/L, and a dye concentration of 10 mg/L at 100 min of irradiation. The photocatalytic degradation kinetic is align with pseudo-first-order reactions. The composite also exhibits remarkable stability and efficiency with 4.83% decline in degradation efficiency after five cycles. Fe3O4/SiO2/TiO2@Ag composite exhibited antibacterial activity against Escherichia coli and Staphylococcus aureus with a Minimum Inhibitory Concentration (MIC) value of 250 mg/L. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Keywords

Collaboration network of the authors

40 authors · 103 co-authorship links · showing the 40 most connected

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  • Hasanuddin University
  • Syarif Hidayatullah State Islamic University Jakarta
  • Universitas Islam Negeri Raden Fatah Palembang
  • Affiliation unknown
  • Different organisations
  • Same organisation
  • Affiliation unknown
  • Thicker line = more joint articles · bigger circle = more articles
Show as table
Co-authorOrganisationJoint articles
Aldes LesbaniAffiliation unknown7
Addy RachmatAffiliation unknown5
Muhammad FaizalHasanuddin University3
Neza Rahayu PalapaAffiliation unknown3
Nabila ApriantiAffiliation unknown3
Anisa Fitri AmatullahAffiliation unknown3
Hasanudin HasanudinAffiliation unknown2
Fahma RiyantiAffiliation unknown2
Widia PurwaningrumAffiliation unknown2
Tarmizi TaherAffiliation unknown2
Hermansyah HermansyahAffiliation unknown2
Muhammad ImronAffiliation unknown2
Hanifa Marisa HanifaAffiliation unknown2
Muhammad RendanaAffiliation unknown1
Muhammad IzzudinAffiliation unknown1
Leily Nurul KomariahAffiliation unknown1
Syahrial OkzaniAffiliation unknown1
David BahrinAffiliation unknown1
Riza Eko SuswantoAffiliation unknown1
Ickhsanto WahyudiAffiliation unknown1
Rahmawati RahmawatiAffiliation unknown1
Amri AmriAffiliation unknown1
Najma Annuria FithriAffiliation unknown1
Nurlisa HidayatiAffiliation unknown1
Mikha Meilinda ChristinaAffiliation unknown1
Ferlinahayati FerlinahayatiAffiliation unknown1
Suhendra SuhendraAffiliation unknown1
Indo YamaSyarif Hidayatullah State Islamic University Jakarta1
Nuruddin Mhd AliAffiliation unknown1
SabaruddinAffiliation unknown1
Adipati NapoleonAffiliation unknown1
BAMBANG YUDONOAffiliation unknown1
MARYATI BUDI UTAMIAffiliation unknown1
Irfannuddin IrfannuddinAffiliation unknown1
Ra Hoetary Tirta AmalliaUniversitas Islam Negeri Raden Fatah Palembang1
Eddy IbrahimAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journal.bcrec.id/index.php/bcrec/oai, first harvested 8 Nov 2026, last seen 8 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en-US">Core-shell Fe3O4/SiO2/TiO2 Magnetic Modified Ag for the Photocatalytic Degradation of Congo Red Dye and Antibacterial Activity</dc:title>
	<dc:creator>Hariani, Poedji Loekitowati</dc:creator>
	<dc:creator>Salni, Salni</dc:creator>
	<dc:creator>Said, Muhammad</dc:creator>
	<dc:creator>Farahdiba, Rahfi</dc:creator>
	<dc:subject xml:lang="en-US">Core-shell; Fe3O4/SiO2/TiO2@Ag; photocatalytic degradation; Congo red dye; antibacterial</dc:subject>
	<dc:description xml:lang="en-US">Disposal of dye wastewater can induce detrimental consequences for human health and the environment. The study aims to synthesize composites consisting of core-shell Fe3O4/SiO2/TiO2 modified with Ag. The composites comprise a Fe3O4 core, a SiO2 interlayer, and a TiO2 shell, with Ag being mobilized on the surface of the core and shell structures. Fe3O4/SiO2/TiO2@Ag composite was employed in the photocatalytic degradation of Congo red dye and antibacterial activity test. The degradation was facilitated by visible light irradiation while considering different factors such as pH solution, the photocatalyst dosage, and the dye's initial concentration. The composite was characterized using X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), Scanning Electron Microscopy-Electron Dispersive X-ray Spectroscopy (SEM-EDS), Vibrating Sample Magnetometer (VSM), and UV-Vis Diffuse Reflectance Spectroscopy (UV-Vis DRS). The findings indicated that the composite exhibited strong magnetic, measuring 49.4 emu/g, with a band gap of 2.92 eV. The composite showed commendable catalytic properties, with degradation efficiency of 96.52% for Congo red dye under conditions: a pH solution of 4, a dosage of 0.5 g/L, and a dye concentration of 10 mg/L at 100 min of irradiation. The photocatalytic degradation kinetic is align with pseudo-first-order reactions. The composite also exhibits remarkable stability and efficiency with 4.83% decline in degradation efficiency after five cycles. Fe3O4/SiO2/TiO2@Ag composite exhibited antibacterial activity against Escherichia coli and Staphylococcus aureus with a Minimum Inhibitory Concentration (MIC) value of 250 mg/L. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). </dc:description>
	<dc:publisher xml:lang="en-US">Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)</dc:publisher>
	<dc:date>2023-08-20</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
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	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.bcrec.id/index.php/bcrec/article/view/19275</dc:identifier>
	<dc:identifier>10.9767/bcrec.19275</dc:identifier>
	<dc:source xml:lang="en-US">Bulletin of Chemical Reaction Engineering &amp; Catalysis; 2023: BCREC Volume 18 Issue 2 Year 2023 (August 2023); 315-330</dc:source>
	<dc:source>1978-2993</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.bcrec.id/index.php/bcrec/article/view/19275/9548</dc:relation>
	<dc:relation>https://journal.bcrec.id/index.php/bcrec/article/downloadSuppFile/19275/4821</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2023 by Authors, Published by BCREC Group</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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