Construction of magnetically recoverable palladium deposited polymer brush catalyst for reduction of organic pollutants

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Yavuz C., Karakoyun N.

MATERIALS RESEARCH BULLETIN, cilt.194, ss.113722-113738, 2026 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 194
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1016/j.materresbull.2025.113722
  • Dergi Adı: MATERIALS RESEARCH BULLETIN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Sayfa Sayıları: ss.113722-113738
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

Water contamination by nitroaromatic compounds and synthetic dyes poses serious environmental and health

hazards, requiring the development of efficient, recyclable, and eco-friendly catalytic systems. In this study, a

magnetically recyclable Pd–PAAm@Fe₃O₄ nanocatalyst was synthesized via surface grafting and reduction

techniques, ensuring uniform dispersion of Pd⁰ nanoparticles on polyacrylamide-modified Fe₃O₄ without toxic

reducing agents. The catalyst exhibited excellent activity for reducing 2-NP, 4-NP, 2,4-dinitrophenol, 2-NA, 4-

NA, and 2,4-dinitroaniline, following pseudo-first-order kinetics, with the highest kₐₚₚ value of 5.23 min⁻¹. It

also showed rapid degradation of organic dyes, achieving complete decolorization of methyl orange in 45 s and

methylene blue in 120 s. The catalyst retained over 99 % efficiency for 4-NP reduction over five cycles, with low

Pd leaching (0.10–0.16 %) and stable structure confirmed by XRD, SEM, TEM, and XPS, highlighting its potential

for sustainable environmental remediation.