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Seawater utilization through hybrid photocatalysis-electrocoagulation process using pumice-supported g-C3N4/BiOBr for hydrogen production and methylene blue decolorization

International Journal of Renewable Energy Development : JRED · Vol. 15 No. 2 (2026) · hlm. 322–332

DOI
10.61435/ijred.2026.61722
ISSN
2252-4940
Terbit
2026-03-01
Penerbit
Center of Biomass & Renewable Energy (CBIORE)
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-sa/4.0

Abstrak

This study investigated the simultaneous photocatalysis-electrocoagulation process using pumice-supported g-C3N4/BiOBr nanocomposites in seawater treatment to remove organic pollutants and generate hydrogen gas. The photocatalyst nanocomposite was synthesized via coprecipitation and immobilized on the pumice surface to enhance light exposure and facilitate catalyst recovery. The performance of the hybrid system was evaluated under various operational parameters, including applied voltage, seawater concentration, and pH. The results showed that the combined process outperformed the individual photocatalysis and electrocoagulation systems. Optimal performance was achieved at pH 3 and 15% seawater concentration, resulting in 99.37% methylene blue decolorization and 211 mL of hydrogen within 2 hours. At higher salinities and lower pH, increased coagulant formation caused a shadowing effect, limiting photocatalytic efficiency despite continued hydrogen evolution. The XPS (X-Ray Photoelectron Spectroscopy) characterization of the photocatalyst material, demonstrated the successful formation of a nanocomposite with a stable surface chemistry. Photoluminescence analysis confirmed that the charge separation mechanism could be enhanced, suppressing the recombination rate and being the primary reason for the enhanced photocatalysis process, although interfacial electronic interactions remained limited. Overall, this study demonstrates that the pumice-supported g-C₃N₄/BiOBr photocatalyst integrated with electrocoagulation provides an effective and stable platform for seawater-based hydrogen production and organic pollutant removal.

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32 penulis · 82 tautan kepenulisan bersama · 46 lintas organisasi

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  • University of Indonesia
  • National Research and Innovation Agency
  • Institut Teknologi Indonesia
  • Sebelas Maret University
  • Universitas Trisakti
  • Kementerian Energi dan Sumber Daya Mineral
  • Universitas Gadjah Mada
  • Organisasi lain
  • Afiliasi tidak diketahui
  • Organisasi berbeda
  • Organisasi sama
  • Afiliasi tidak diketahui
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Tampilkan sebagai tabel
Rekan penulisOrganisasiArtikel bersama
Muhammad IbadurrohmanUniversity of Indonesia4
Ratnawati RatnawatiInstitut Teknologi Indonesia4
Eniya Listiani DewiKementerian Energi dan Sumber Daya Mineral3
M. Febriansyah BachriUniversity of Indonesia3
SlametAfiliasi tidak diketahui2
Saddam HuseinUniversity of Indonesia2
Saddam HuseinUniversitas Malahayati2
Rahayu Lestari SugihartiniUniversity of Indonesia2
Didik SudarsonoNational Research and Innovation Agency1
Eriawan RismanaNational Research and Innovation Agency1
Riandy PutraSebelas Maret University1
Witri Wahyu LestariSebelas Maret University1
Fajar Rakhman WibowoSebelas Maret University1
Sukirno SukirnoUniversitas Gadjah Mada1
Athiek Sri RedjekiUniversity of Indonesia1
Setiadi SetiadiUniversity of Indonesia1
Yuwendi YuwendiUniversity of Indonesia1
Ryan Rafi RustamadjiUniversity of Indonesia1
Farah Diba ToyaUniversity of Indonesia1
Satrio KuntolaksonoInstitut Teknologi Indonesia1
Muhammad Fahmi HakimUniversity of Indonesia1
Rike YudiantiNational Research and Innovation Agency1
Abdul Hamid BudimanNational Research and Innovation Agency1
Jarnuzi GunlazuardiUniversity of Indonesia1
Ratnawati RatnawatiInstitut Teknologi Indonesia1
Viona WongsoUniversity of Indonesia1
Mohammad NasikinUniversity of Indonesia1
Lisa AdhaniUniversitas Bhayangkara Jakarta Raya1

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Sumber metadata: OAI-PMH (metadata jurnal) https://ijred.cbiore.id/index.php/ijred/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Seawater utilization through hybrid photocatalysis-electrocoagulation process using pumice-supported g-C3N4/BiOBr for hydrogen production and methylene blue decolorization</dc:title>
	<dc:creator>Sudianto, Julius Rainer</dc:creator>
	<dc:creator>Pratiwi, Reno</dc:creator>
	<dc:creator>Susanto, Bambang Heru</dc:creator>
	<dc:creator>Slamet, Slamet</dc:creator>
	<dc:subject xml:lang="en-US">Hydrogen; Photocatalysis; Electrocoagulation; Seawater; Renewable Energy</dc:subject>
	<dc:description xml:lang="en-US">This study investigated the simultaneous photocatalysis-electrocoagulation process using pumice-supported g-C3N4/BiOBr nanocomposites in seawater treatment to remove organic pollutants and generate hydrogen gas. The photocatalyst nanocomposite was synthesized via coprecipitation and immobilized on the pumice surface to enhance light exposure and facilitate catalyst recovery. The performance of the hybrid system was evaluated under various operational parameters, including applied voltage, seawater concentration, and pH. The results showed that the combined process outperformed the individual photocatalysis and electrocoagulation systems. Optimal performance was achieved at pH 3 and 15% seawater concentration, resulting in 99.37% methylene blue decolorization and 211 mL of hydrogen within 2 hours. At higher salinities and lower pH, increased coagulant formation caused a shadowing effect, limiting photocatalytic efficiency despite continued hydrogen evolution. The XPS (X-Ray Photoelectron Spectroscopy) characterization of the photocatalyst material, demonstrated the successful formation of a nanocomposite with a stable surface chemistry. Photoluminescence analysis confirmed that the charge separation mechanism could be enhanced, suppressing the recombination rate and being the primary reason for the enhanced photocatalysis process, although interfacial electronic interactions remained limited. Overall, this study demonstrates that the pumice-supported g-C₃N₄/BiOBr photocatalyst integrated with electrocoagulation provides an effective and stable platform for seawater-based hydrogen production and organic pollutant removal.</dc:description>
	<dc:publisher xml:lang="en-US">Center of Biomass &amp; Renewable Energy (CBIORE)</dc:publisher>
	<dc:date>2026-03-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US"></dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ijred.cbiore.id/index.php/ijred/article/view/61722</dc:identifier>
	<dc:identifier>10.61435/ijred.2026.61722</dc:identifier>
	<dc:source xml:lang="en-US">International Journal of Renewable Energy Development; Vol 15, No 2 (2026): March 2026; 322-332</dc:source>
	<dc:source>2252-4940</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ijred.cbiore.id/index.php/ijred/article/view/61722/pdf</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2026 The Author(s). Published by Centre of Biomass and Renewable Energy (CBIORE)</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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