Fabrication of SiW9Co3–Bi4O5Br2 photocatalysts with improved charge separation for visible-light-driven hydrogen evolution and metronidazole degradation: Characterization, mechanism, and toxicity assessment

Batul, Rahila; Hassan, Waqed H.; Jasim, Dheyaa J.; Singh, Pradeep Kumar; Aldaghfag, Shatha A.; Ayadi, Mohamed; Mahariq, Ibrahm; Karimov, Mukhtorjon; Mukhitdinov, Otabek; Abduvokhidov, Alisher; Haggam, Reda A.

doi:10.1016/j.jwpe.2026.109471

articleJournal of Water Process EngineeringFeb 2, 2026HYBRID OA

Fabrication of SiW9Co3–Bi4O5Br2 photocatalysts with improved charge separation for visible-light-driven hydrogen evolution and metronidazole degradation: Characterization, mechanism, and toxicity assessment

RBRahila Batul WHWaqed H. Hassan DJDheyaa J. Jasim PKPradeep Kumar Singh SAShatha A. Aldaghfag

University of Ha'il · University of Kerbala · +12 more institutions

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Abstract

The rational design of efficient photocatalysts for clean energy generation and environmental remediation remains a significant challenge. In this study, a novel SiW 9 Co 3 –Bi 4 O 5 Br 2 heterostructure photocatalyst was successfully synthesized using a simple hydrothermal–self-assembly method. The structural, morphological, and optical properties were thoroughly investigated using techniques such as XRD, FTIR, Raman, XPS, SEM, TEM, and UV–Vis DRS. SiW 9 Co 3 clusters were uniformly anchored on the surface of Bi 4 O 5 Br 2 nanosheets, forming heterojunction interfaces that facilitated charge transfer and suppressed electron–hole recombination. Under visible light, the optimized SiW 9 Co 3 –Bi 4 O 5 Br 2 (20…

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Topics & keywords

Topics

Keywords

Photocatalysis
Heterojunction
Fabrication
Degradation (telecommunications)
Visible spectrum
Composite number
Pollutant

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