Melola Discovery

← Melola Discovery

Jurnal SINTA 1

Photocatalytic degradation of methylene blue and Congo red dyes from aqueous solutions by bentonite-Fe3O4 magnetic

Communications in Science and Technology · Vol. 8 No. 1 (2023) · hlm. 1–9

DOI
10.21924/cst.8.1.2023.1007
ISSN
2502-9266, 2502-9258
Terbit
2023-07-09
Penerbit
Komunitas Ilmuwan dan Profesional Muslim Indonesia
Bahasa
eng

Abstrak

This study describes the co-precipitation synthesis of magnetic bentonite-Fe3O4 for photocatalytic degradation of methylene blue and Congo red pigments under visible light. Bentonite-Fe3O4 composites were produced using the mass ratio of 2:1 and 1:1 for bentonite to Fe3O4, respectively. X-ray Powder Diffraction (XRD), Fourier Transform Infra-Red (FTIR), BET surface area, Vibrating-Sample Magnetometer (VSM), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS), and Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV DRS) were used to characterize the materials. The bentonite-Fe3O4 (1:1) composite exhibited a greater surface area in comparison to the bentonite-Fe3O4 (2:1) composite with a measured value of 106.6 m2/g. It is a superparamagnetic material with a band gap of 2.25 eV and a saturation magnetization of 69.64 emu/g. The photocatalytic degradation of dye using bentonite-Fe3O4 (1:1) with the initial dye concentration of 25 mg/L, volume of 50 mL, catalyst dose of 0.05 g/L, addition of 3 mL H2O2, and 90 minutes of visible irradiation resulted in 94.34% and 98.45% degradation efficiency of methylene blue and Congo red dyes, respectively. The study determined that the most favorable pH for the photocatalytic degradation of methylene blue was pH 11, whereas the optimal pH for Congo red was found at pH 5. For methylene blue and Congo red dyes, photocatalytic degradation followed pseudo-first-order with the constant rates of 0.0356 min-1 and 0.0348 min-1, respectively. After five cycles of use in the photocatalytic process, the catalyst's degradation efficiency fell into below 5%. This research demonstrated that catalysts could be utilized in wastewater treatment technology.

Kata kunci

Jaringan kolaborasi para penulis

40 penulis · 144 tautan kepenulisan bersama · 34 lintas organisasi · menampilkan 40 yang paling banyak terhubung

Arahkan kursor atau ketuk sebuah nama untuk menyorot rekan penulisnya. Klik dua kali untuk membuka halaman penulis.

  • Sriwijaya University
  • National Research and Innovation Agency
  • Indonesian Institute of Sciences
  • Samudra University
  • Afiliasi tidak diketahui
  • Organisasi berbeda
  • Organisasi sama
  • Afiliasi tidak diketahui
  • Garis lebih tebal = lebih banyak artikel bersama · lingkaran lebih besar = lebih banyak artikel
Tampilkan sebagai tabel
Rekan penulisOrganisasiArtikel bersama
Muhammad Al MuttaqiiNational Research and Innovation Agency7
Roni MaryanaIndonesian Institute of Sciences6
Wan Ryan AsriSriwijaya University6
Novia NoviaSriwijaya University6
Nino RinaldiNational Research and Innovation Agency4
Salni SalniSriwijaya University4
Fitri HadiahSriwijaya University3
Muhammad SaidSriwijaya University3
Hermansyah HermansyahSriwijaya University2
Rahmawati RahmawatiSamudra University2
Nabila ApriantiSriwijaya University2
Anisa Fitri AmatullahSriwijaya University2
Aldes LesbaniSriwijaya University2
Fatma FatmaSriwijaya University1
Nisa Manora PratamaSriwijaya University1
Eva MusifaSriwijaya University1
Risfidian MohadiSriwijaya University1
Neza Rahayu PalapaSriwijaya University1
Tarmizi TaherSriwijaya University1
Bakri Rio RahayuSriwijaya University1
Mhika NakashimaSriwijaya University1
Dibyo PranowoNational Research and Innovation Agency1
Sudibyo SudibyoNational Research and Innovation Agency1
Maja Pranata MarbunAfiliasi tidak diketahui1
Asif AunillahNational Research and Innovation Agency1
Teuku Beuna BardantNational Research and Innovation Agency1
Rahfi FarahdibaSriwijaya University1
Hanifa MarisaSriwijaya University1
Ra Hoetary Tirta AmalliaSriwijaya University1
Irfannuddin IrfannuddinSriwijaya University1
Eddy IbrahimSriwijaya University1
Novia NoviaSriwijaya University1
Getari KasmiartiSriwijaya University1
Maftuh GozaliSriwijaya University1
Julinar JulinarSriwijaya University1

Afiliasi berasal dari OpenAlex; metadata OAI-PMH jurnal tidak memuatnya. Penulis tanpa ID OpenAlex dicocokkan berdasarkan nama, sehingga dua orang bisa tergabung atau satu orang bisa terpisah.

Sumber metadata: OAI-PMH (metadata jurnal) https://cst.kipmi.or.id/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">Photocatalytic degradation of methylene blue and Congo red dyes from aqueous solutions by bentonite-Fe3O4 magnetic</dc:title>
	<dc:creator>Riyanti, Fahma</dc:creator>
	<dc:creator>Hasanudin, Hasanudin</dc:creator>
	<dc:creator>Rachmat, Addy</dc:creator>
	<dc:creator>Purwaningrum, Widia</dc:creator>
	<dc:creator>Hariani, Poedji Loekitowati</dc:creator>
	<dc:subject xml:lang="en-US">bentonite-Fe3O4</dc:subject>
	<dc:subject xml:lang="en-US">magnetic</dc:subject>
	<dc:subject xml:lang="en-US">degradation photocatalytic</dc:subject>
	<dc:subject xml:lang="en-US">methylene blue</dc:subject>
	<dc:subject xml:lang="en-US">Congo red</dc:subject>
	<dc:description xml:lang="en-US">This study describes the co-precipitation synthesis of magnetic bentonite-Fe3O4 for photocatalytic degradation of methylene blue and Congo red pigments under visible light. Bentonite-Fe3O4 composites were produced using the mass ratio of 2:1 and 1:1 for bentonite to Fe3O4, respectively. X-ray Powder Diffraction (XRD), Fourier Transform Infra-Red (FTIR), BET surface area, Vibrating-Sample Magnetometer (VSM), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS), and Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV DRS) were used to characterize the materials. The bentonite-Fe3O4 (1:1) composite exhibited a greater surface area in comparison to the bentonite-Fe3O4 (2:1) composite with a measured value of 106.6 m2/g. It is a superparamagnetic material with a band gap of 2.25 eV and a saturation magnetization of 69.64 emu/g. The photocatalytic degradation of dye using bentonite-Fe3O4 (1:1) with the initial dye concentration of 25 mg/L, volume of 50 mL, catalyst dose of 0.05 g/L, addition of 3 mL H2O2, and 90 minutes of visible irradiation resulted in 94.34% and 98.45% degradation efficiency of methylene blue and Congo red dyes, respectively. The study determined that the most favorable pH for the photocatalytic degradation of methylene blue was pH 11, whereas the optimal pH for Congo red was found at pH 5. For methylene blue and Congo red dyes, photocatalytic degradation followed pseudo-first-order with the constant rates of 0.0356 min-1 and 0.0348 min-1, respectively. After five cycles of use in the photocatalytic process, the catalyst's degradation efficiency fell into below 5%. This research demonstrated that catalysts could be utilized in wastewater treatment technology.</dc:description>
	<dc:publisher xml:lang="en-US">Komunitas Ilmuwan dan Profesional Muslim Indonesia</dc:publisher>
	<dc:date>2023-07-09</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://cst.kipmi.or.id/journal/article/view/1007</dc:identifier>
	<dc:identifier>10.21924/cst.8.1.2023.1007</dc:identifier>
	<dc:source xml:lang="en-US">Communications in Science and Technology; Vol. 8 No. 1 (2023); 1-9</dc:source>
	<dc:source xml:lang="id-ID">Communications in Science and Technology; Vol 8 No 1 (2023); 1-9</dc:source>
	<dc:source>2502-9266</dc:source>
	<dc:source>2502-9258</dc:source>
	<dc:source>10.21924/cst.8.1.2023</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://cst.kipmi.or.id/journal/article/view/1007/123</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2023 Communications in Science and Technology</dc:rights>
</oai_dc:dc>