Browsing by Author "Yavuz, Cenap"

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    Construction of Magnetically Recoverable Palladium Deposited Polymer Brush Catalyst for Reduction of Organic Pollutants
    (Pergamon-Elsevier Science Ltd, 2026) Yavuz, Cenap; Karakoyun, Necdet
    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, 4NA, 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.