Ak B., GÜL E. M., Senberber-Dumanli F. T., KIPÇAK A. S., DERUN E.
WATER AIR AND SOIL POLLUTION, cilt.237, sa.8, 2026 (SCI-Expanded, Scopus)
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Yayın Türü:
Makale / Tam Makale
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Cilt numarası:
237
Sayı:
8
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Basım Tarihi:
2026
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Doi Numarası:
10.1007/s11270-026-09162-4
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Dergi Adı:
WATER AIR AND SOIL POLLUTION
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Derginin Tarandığı İndeksler:
Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Artic & Antarctic Regions, BIOSIS, Chemical Abstracts Core, Chimica, Compendex, EMBASE, Environment Index, Geobase, Greenfile
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Anahtar Kelimeler:
Box-Behnken design, Congo Red, Magnesium Borate, Photodegradation, Wastewater treatment
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Yıldız Teknik Üniversitesi Adresli:
Evet
Özet
This study investigates, the photocatalytic potential of hydrothermally synthesised magnesium borate hydrate (Admontite, MgO3B(2)O(3)7H(2)O) for the removal of Congo Red (CR), a persistent azo dye, from aqueous solutions under UV irradiation. The photocatalyst was synthesised via a simplified hydrothermal route and comprehensively characterised by X-Ray Diffraction (XRD), Fourier Transmission Infrared Spectroscopy (FT-IR), and Scanning Electron Microscopy (SEM) analyses, confirming the formation of a single-phase admontite structure with submicron, multi-angular morphology. The effects of photocatalyst dosage, irradiation time, and initial dye concentration on CR removal efficiency were systematically evaluated using a Box-Behnken response surface methodology. Statistical analysis demonstrated that the reduced quadratic model described the experimental data (R-2 = 0.9985, p < 0.0001). The maximum CR removal efficiency of 58.74% was achieved under optimal conditions of 0.10 g photocatalyst dosage, 60 min irradiation time, and 50 ppm initial dye concentration. Radical scavenging experiments revealed that superoxide radicals (O-2(-)) played a dominant role in the photodegradation mechanism. These findings highlight magnesium borate hydrate as a cost-effective, environmentally benign, and structurally stable photocatalyst, offering a promising alternative for dye-contaminated wastewater treatment.